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Chen N, Tyler LC, Le AT, Welsh EA, Fang B, Elliott A, Davies KD, Danhorn T, Riely GJ, Ladanyi M, Haura EB, Doebele RC. MIG6 Mediates Adaptive and Acquired Resistance to ALK/ROS1 Fusion Kinase Inhibition through EGFR Bypass Signaling. Mol Cancer Ther 2024; 23:92-105. [PMID: 37748191 PMCID: PMC10762338 DOI: 10.1158/1535-7163.mct-23-0218] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/11/2023] [Revised: 08/10/2023] [Accepted: 09/22/2023] [Indexed: 09/27/2023]
Abstract
Despite the initial benefit from tyrosine kinase inhibitors (TKI) targeting oncogenic ALK and ROS1 gene fusions in non-small cell lung cancer, complete responses are rare and resistance ultimately emerges from residual tumor cells. Although several acquired resistance mechanisms have been reported at the time of disease progression, adaptative resistance mechanisms that contribute to residual diseases before the outgrowth of tumor cells with acquired resistance are less clear. For the patients who have progressed after TKI treatments, but do not demonstrate ALK/ROS1 kinase mutations, there is a lack of biomarkers to guide effective treatments. Herein, we found that phosphorylation of MIG6, encoded by the ERRFI1 gene, was downregulated by ALK/ROS1 inhibitors as were mRNA levels, thus potentiating EGFR activity to support cell survival as an adaptive resistance mechanism. MIG6 downregulation was sustained following chronic exposure to ALK/ROS1 inhibitors to support the establishment of acquired resistance. A higher ratio of EGFR to MIG6 expression was found in ALK TKI-treated and ALK TKI-resistant tumors and correlated with the poor responsiveness to ALK/ROS1 inhibition in patient-derived cell lines. Furthermore, we identified and validated a MIG6 EGFR-binding domain truncation mutation in mediating resistance to ROS1 inhibitors but sensitivity to EGFR inhibitors. A MIG6 deletion was also found in a patient after progressing to ROS1 inhibition. Collectively, this study identifies MIG6 as a novel regulator for EGFR-mediated adaptive and acquired resistance to ALK/ROS1 inhibitors and suggests EGFR to MIG6 ratios and MIG6-damaging alterations as biomarkers to predict responsiveness to ALK/ROS1 and EGFR inhibitors.
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Affiliation(s)
- Nan Chen
- Department of Medicine, Division of Medical Oncology, University of Colorado Anschutz Medical Campus, Aurora, Colorado
| | - Logan C. Tyler
- Department of Medicine, Division of Medical Oncology, University of Colorado Anschutz Medical Campus, Aurora, Colorado
| | - Anh T. Le
- Cell Technologies Shared Resources, University of Colorado Anschutz Medical Campus, Aurora, Colorado
| | - Eric A. Welsh
- Biostatistics and Bioinformatics Shared Resources, H. Lee Moffitt Cancer Center & Research Institute, Tampa, Florida
| | - Bin Fang
- Proteomics & Metabolomics Core, H. Lee Moffitt Cancer Center & Research Institute, Tampa, Florida
| | - Andrew Elliott
- Clinical and Translational Research, Caris Life Sciences, Phoenix, Arizona
| | - Kurtis D. Davies
- Department of Pathology, University of Colorado Anschutz Medical Campus, Aurora, Colorado
| | - Thomas Danhorn
- Department of Pharmacology and of University of Colorado Cancer Center, University of Colorado Anschutz Medical Campus, Aurora, Colorado
| | - Gregory J. Riely
- Division of Solid Tumor Oncology, Department of Medicine, Memorial Sloan Kettering Cancer Center, New York, New York
| | - Marc Ladanyi
- Department of Pathology, Memorial Sloan Kettering Cancer Center, New York, New York
| | - Eric B. Haura
- Department of Thoracic Oncology, H. Lee Moffitt Cancer Center & Research Institute, Tampa, Florida
| | - Robert C. Doebele
- Department of Medicine, Division of Medical Oncology, University of Colorado Anschutz Medical Campus, Aurora, Colorado
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Marcoux P, Hwang JW, Desterke C, Imeri J, Bennaceur-Griscelli A, Turhan AG. Modeling RET-Rearranged Non-Small Cell Lung Cancer (NSCLC): Generation of Lung Progenitor Cells (LPCs) from Patient-Derived Induced Pluripotent Stem Cells (iPSCs). Cells 2023; 12:2847. [PMID: 38132167 PMCID: PMC10742233 DOI: 10.3390/cells12242847] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/07/2023] [Revised: 12/03/2023] [Accepted: 12/08/2023] [Indexed: 12/23/2023] Open
Abstract
REarranged during Transfection (RET) oncogenic rearrangements can occur in 1-2% of lung adenocarcinomas. While RET-driven NSCLC models have been developed using various approaches, no model based on patient-derived induced pluripotent stem cells (iPSCs) has yet been described. Patient-derived iPSCs hold great promise for disease modeling and drug screening. However, generating iPSCs with specific oncogenic drivers, like RET rearrangements, presents challenges due to reprogramming efficiency and genotypic variability within tumors. To address this issue, we aimed to generate lung progenitor cells (LPCs) from patient-derived iPSCs carrying the mutation RETC634Y, commonly associated with medullary thyroid carcinoma. Additionally, we established a RETC634Y knock-in iPSC model to validate the effect of this oncogenic mutation during LPC differentiation. We successfully generated LPCs from RETC634Y iPSCs using a 16-day protocol and detected an overexpression of cancer-associated markers as compared to control iPSCs. Transcriptomic analysis revealed a distinct signature of NSCLC tumor repression, suggesting a lung multilineage lung dedifferentiation, along with an upregulated signature associated with RETC634Y mutation, potentially linked to poor NSCLC prognosis. These findings were validated using the RETC634Y knock-in iPSC model, highlighting key cancerous targets such as PROM2 and C1QTNF6, known to be associated with poor prognostic outcomes. Furthermore, the LPCs derived from RETC634Y iPSCs exhibited a positive response to the RET inhibitor pralsetinib, evidenced by the downregulation of the cancer markers. This study provides a novel patient-derived off-the-shelf iPSC model of RET-driven NSCLC, paving the way for exploring the molecular mechanisms involved in RET-driven NSCLC to study disease progression and to uncover potential therapeutic targets.
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Affiliation(s)
- Paul Marcoux
- INSERM UMR-S-1310, Université Paris Saclay, 94800 Villejuif, France; (P.M.); (J.W.H.); (C.D.); (J.I.); (A.B.-G.)
- Faculty of Medicine, Paris-Saclay University, 94270 Le Kremlin Bicetre, France
| | - Jin Wook Hwang
- INSERM UMR-S-1310, Université Paris Saclay, 94800 Villejuif, France; (P.M.); (J.W.H.); (C.D.); (J.I.); (A.B.-G.)
- Faculty of Medicine, Paris-Saclay University, 94270 Le Kremlin Bicetre, France
| | - Christophe Desterke
- INSERM UMR-S-1310, Université Paris Saclay, 94800 Villejuif, France; (P.M.); (J.W.H.); (C.D.); (J.I.); (A.B.-G.)
- Faculty of Medicine, Paris-Saclay University, 94270 Le Kremlin Bicetre, France
| | - Jusuf Imeri
- INSERM UMR-S-1310, Université Paris Saclay, 94800 Villejuif, France; (P.M.); (J.W.H.); (C.D.); (J.I.); (A.B.-G.)
- Faculty of Medicine, Paris-Saclay University, 94270 Le Kremlin Bicetre, France
| | - Annelise Bennaceur-Griscelli
- INSERM UMR-S-1310, Université Paris Saclay, 94800 Villejuif, France; (P.M.); (J.W.H.); (C.D.); (J.I.); (A.B.-G.)
- Faculty of Medicine, Paris-Saclay University, 94270 Le Kremlin Bicetre, France
- APHP Paris Saclay, Department of Hematology, Hôpital Bicêtre, 94270 Le Kremlin Bicetre, France
- Center for IPSC Therapies, CITHERA, INSERM UMS-45, Genopole Campus, 91100 Evry, France
- APHP Paris Saclay, Department of Hematology, Hôpital Paul Brousse, 94800 Villejuif, France
| | - Ali G. Turhan
- INSERM UMR-S-1310, Université Paris Saclay, 94800 Villejuif, France; (P.M.); (J.W.H.); (C.D.); (J.I.); (A.B.-G.)
- Faculty of Medicine, Paris-Saclay University, 94270 Le Kremlin Bicetre, France
- APHP Paris Saclay, Department of Hematology, Hôpital Bicêtre, 94270 Le Kremlin Bicetre, France
- Center for IPSC Therapies, CITHERA, INSERM UMS-45, Genopole Campus, 91100 Evry, France
- APHP Paris Saclay, Department of Hematology, Hôpital Paul Brousse, 94800 Villejuif, France
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3
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Daley BR, Vieira HM, Rao C, Hughes JM, Beckley ZM, Huisman DH, Chatterjee D, Sealover NE, Cox K, Askew JW, Svoboda RA, Fisher KW, Lewis RE, Kortum RL. SOS1 and KSR1 modulate MEK inhibitor responsiveness to target resistant cell populations based on PI3K and KRAS mutation status. Proc Natl Acad Sci U S A 2023; 120:e2313137120. [PMID: 37972068 PMCID: PMC10666034 DOI: 10.1073/pnas.2313137120] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2023] [Accepted: 09/20/2023] [Indexed: 11/19/2023] Open
Abstract
KRAS is the most commonly mutated oncogene. Targeted therapies have been developed against mediators of key downstream signaling pathways, predominantly components of the RAF/MEK/ERK kinase cascade. Unfortunately, single-agent efficacy of these agents is limited both by intrinsic and acquired resistance. Survival of drug-tolerant persister cells within the heterogeneous tumor population and/or acquired mutations that reactivate receptor tyrosine kinase (RTK)/RAS signaling can lead to outgrowth of tumor-initiating cells (TICs) and drive therapeutic resistance. Here, we show that targeting the key RTK/RAS pathway signaling intermediates SOS1 (Son of Sevenless 1) or KSR1 (Kinase Suppressor of RAS 1) both enhances the efficacy of, and prevents resistance to, the MEK inhibitor trametinib in KRAS-mutated lung (LUAD) and colorectal (COAD) adenocarcinoma cell lines depending on the specific mutational landscape. The SOS1 inhibitor BI-3406 enhanced the efficacy of trametinib and prevented trametinib resistance by targeting spheroid-initiating cells in KRASG12/G13-mutated LUAD and COAD cell lines that lacked PIK3CA comutations. Cell lines with KRASQ61 and/or PIK3CA mutations were insensitive to trametinib and BI-3406 combination therapy. In contrast, deletion of the RAF/MEK/ERK scaffold protein KSR1 prevented drug-induced SIC upregulation and restored trametinib sensitivity across all tested KRAS mutant cell lines in both PIK3CA-mutated and PIK3CA wild-type cancers. Our findings demonstrate that vertical inhibition of RTK/RAS signaling is an effective strategy to prevent therapeutic resistance in KRAS-mutated cancers, but therapeutic efficacy is dependent on both the specific KRAS mutant and underlying comutations. Thus, selection of optimal therapeutic combinations in KRAS-mutated cancers will require a detailed understanding of functional dependencies imposed by allele-specific KRAS mutations.
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Affiliation(s)
- Brianna R. Daley
- Department of Pharmacology and Molecular Therapeutics, Uniformed Services University of the Health Sciences, Bethesda, MD20814
| | - Heidi M. Vieira
- Eppley Institute for Research in Cancer and Allied Diseases, University of Nebraska Medical Center, Omaha, NE68198
| | - Chaitra Rao
- Eppley Institute for Research in Cancer and Allied Diseases, University of Nebraska Medical Center, Omaha, NE68198
| | - Jacob M. Hughes
- Department of Pharmacology and Molecular Therapeutics, Uniformed Services University of the Health Sciences, Bethesda, MD20814
| | - Zaria M. Beckley
- Department of Pharmacology and Molecular Therapeutics, Uniformed Services University of the Health Sciences, Bethesda, MD20814
| | - Dianna H. Huisman
- Eppley Institute for Research in Cancer and Allied Diseases, University of Nebraska Medical Center, Omaha, NE68198
| | - Deepan Chatterjee
- Department of Integrative Physiology and Molecular Medicine, University of Nebraska Medical Center, Omaha, NE68198
| | - Nancy E. Sealover
- Department of Pharmacology and Molecular Therapeutics, Uniformed Services University of the Health Sciences, Bethesda, MD20814
| | - Katherine Cox
- Department of Pharmacology and Molecular Therapeutics, Uniformed Services University of the Health Sciences, Bethesda, MD20814
| | - James W. Askew
- Eppley Institute for Research in Cancer and Allied Diseases, University of Nebraska Medical Center, Omaha, NE68198
| | - Robert A. Svoboda
- Department of Pathology and Microbiology, University of Nebraska Medical Center, Omaha, NE68198
| | - Kurt W. Fisher
- Department of Pathology and Microbiology, University of Nebraska Medical Center, Omaha, NE68198
| | - Robert E. Lewis
- Eppley Institute for Research in Cancer and Allied Diseases, University of Nebraska Medical Center, Omaha, NE68198
| | - Robert L. Kortum
- Department of Pharmacology and Molecular Therapeutics, Uniformed Services University of the Health Sciences, Bethesda, MD20814
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4
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Gou X, Kim BJ, Anurag M, Lei JT, Young MN, Holt MV, Fandino D, Vollert CT, Singh P, Alzubi MA, Malovannaya A, Dobrolecki LE, Lewis MT, Li S, Foulds CE, Ellis MJ. Kinome Reprogramming Is a Targetable Vulnerability in ESR1 Fusion-Driven Breast Cancer. Cancer Res 2023; 83:3237-3251. [PMID: 37071495 PMCID: PMC10543968 DOI: 10.1158/0008-5472.can-22-3484] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/04/2022] [Revised: 02/20/2023] [Accepted: 04/12/2023] [Indexed: 04/19/2023]
Abstract
Transcriptionally active ESR1 fusions (ESR1-TAF) are a potent cause of breast cancer endocrine therapy (ET) resistance. ESR1-TAFs are not directly druggable because the C-terminal estrogen/anti-estrogen-binding domain is replaced with translocated in-frame partner gene sequences that confer constitutive transactivation. To discover alternative treatments, a mass spectrometry (MS)-based kinase inhibitor pulldown assay (KIPA) was deployed to identify druggable kinases that are upregulated by diverse ESR1-TAFs. Subsequent explorations of drug sensitivity validated RET kinase as a common therapeutic vulnerability despite remarkable ESR1-TAF C-terminal sequence and structural diversity. Organoids and xenografts from a pan-ET-resistant patient-derived xenograft model that harbors the ESR1-e6>YAP1 TAF were concordantly inhibited by the selective RET inhibitor pralsetinib to a similar extent as the CDK4/6 inhibitor palbociclib. Together, these findings provide preclinical rationale for clinical evaluation of RET inhibition for the treatment of ESR1-TAF-driven ET-resistant breast cancer. SIGNIFICANCE Kinome analysis of ESR1 translocated and mutated breast tumors using drug bead-based mass spectrometry followed by drug-sensitivity studies nominates RET as a therapeutic target. See related commentary by Wu and Subbiah, p. 3159.
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Affiliation(s)
- Xuxu Gou
- Lester and Sue Smith Breast Center, Baylor College of Medicine, Houston, Texas
- Graduate Program in Translational Biology and Molecular Medicine, Baylor College of Medicine, Houston Texas
- UCSF Helen Diller Family Comprehensive Cancer Center, University of California San Francisco, San Francisco, California
| | - Beom-Jun Kim
- Lester and Sue Smith Breast Center, Baylor College of Medicine, Houston, Texas
- Department of Medicine, Baylor College of Medicine, Houston, Texas
| | - Meenakshi Anurag
- Lester and Sue Smith Breast Center, Baylor College of Medicine, Houston, Texas
- Department of Medicine, Baylor College of Medicine, Houston, Texas
| | - Jonathan T. Lei
- Lester and Sue Smith Breast Center, Baylor College of Medicine, Houston, Texas
- Department of Human and Molecular Genetics, Baylor College of Medicine, Houston, Texas
| | - Meggie N. Young
- Lester and Sue Smith Breast Center, Baylor College of Medicine, Houston, Texas
- Department of Biochemistry and Molecular Biology, Baylor College of Medicine, Houston, Texas
| | - Matthew V. Holt
- Lester and Sue Smith Breast Center, Baylor College of Medicine, Houston, Texas
| | - Diana Fandino
- Lester and Sue Smith Breast Center, Baylor College of Medicine, Houston, Texas
| | - Craig T. Vollert
- Lester and Sue Smith Breast Center, Baylor College of Medicine, Houston, Texas
- Employee of Adrienne Helis Malvin Medical Research Foundation, New Orleans, Los Angeles
| | - Purba Singh
- Lester and Sue Smith Breast Center, Baylor College of Medicine, Houston, Texas
| | - Mohammad A. Alzubi
- Employee of Adrienne Helis Malvin Medical Research Foundation, New Orleans, Los Angeles
| | - Anna Malovannaya
- Department of Biochemistry and Molecular Biology, Baylor College of Medicine, Houston, Texas
| | - Lacey E. Dobrolecki
- Lester and Sue Smith Breast Center, Baylor College of Medicine, Houston, Texas
| | - Michael T. Lewis
- Lester and Sue Smith Breast Center, Baylor College of Medicine, Houston, Texas
- Department of Molecular and Cellular Biology, Baylor College of Medicine, Houston, Texas
- Dan L. Duncan Cancer Center, Baylor College of Medicine, Houston, Texas
- Department of Radiology, Baylor College of Medicine, Houston, Texas
| | - Shunqiang Li
- Division of Oncology, Department of Internal Medicine, Washington University School of Medicine, St. Louis, Missouri
| | - Charles E. Foulds
- Lester and Sue Smith Breast Center, Baylor College of Medicine, Houston, Texas
- Department of Medicine, Baylor College of Medicine, Houston, Texas
- Dan L. Duncan Cancer Center, Baylor College of Medicine, Houston, Texas
| | - Matthew J. Ellis
- Lester and Sue Smith Breast Center, Baylor College of Medicine, Houston, Texas
- Graduate Program in Translational Biology and Molecular Medicine, Baylor College of Medicine, Houston Texas
- Department of Medicine, Baylor College of Medicine, Houston, Texas
- Department of Molecular and Cellular Biology, Baylor College of Medicine, Houston, Texas
- Dan L. Duncan Cancer Center, Baylor College of Medicine, Houston, Texas
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5
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Schubert L, Le AT, Hinz TK, Navarro AC, Nelson-Taylor SK, Nemenoff RA, Heasley LE, Doebele RC. A functional sgRNA-CRISPR screening method for generating murine RET and NTRK1 rearranged oncogenes. Biol Open 2023; 12:bio059994. [PMID: 37470475 PMCID: PMC10445739 DOI: 10.1242/bio.059994] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/03/2023] [Accepted: 07/10/2023] [Indexed: 07/21/2023] Open
Abstract
CRISPR/Cas9 gene editing represents a powerful tool for investigating fusion oncogenes in cancer biology. Successful experiments require that sgRNAs correctly associate with their target sequence and initiate double stranded breaks which are subsequently repaired by endogenous DNA repair systems yielding fusion chromosomes. Simple tests to ensure sgRNAs are functional are not generally available and often require single cell cloning to identify successful CRISPR-editing events. Here, we describe a novel method relying on acquisition of IL3-independence in Ba/F3 cells to identify sgRNA pairs that generate oncogenic gene rearrangements of the Ret and Ntrk1 tyrosine kinases. The rearrangements were confirmed with PCR, RT-PCR and sequencing and Ba/F3 cells harboring Ret or Ntrk1 rearrangements acquired sensitivity to RET and TRK inhibitors, respectively. Adenoviruses encoding Cas9 and sgRNA pairs inducing the Kif5b-Ret and Trim24-Ret rearrangements were intratracheally instilled into mice and yielded lung adenocarcinomas. A cell line (TR.1) established from a Trim24-Ret positive tumor exhibited high in vitro sensitivity to the RET inhibitors LOXO-292 and BLU-667 and orthotopic TR.1 cell-derived tumors underwent marked shrinkage upon LOXO-292 treatment. Thus, the method offers an efficient means to validate sgRNAs that successfully target their intended loci for the generation of novel, syngeneic murine oncogene-driven tumor models.
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Affiliation(s)
- Laura Schubert
- Departments of Medicine, University of Colorado Anschutz Medical Campus, Aurora, CO80045, USA
| | - Anh T. Le
- Departments of Medicine, University of Colorado Anschutz Medical Campus, Aurora, CO80045, USA
| | - Trista K. Hinz
- Craniofacial Biology, University of Colorado Anschutz Medical Campus, Aurora, CO80045, USA
| | - Andre C. Navarro
- Departments of Medicine, University of Colorado Anschutz Medical Campus, Aurora, CO80045, USA
| | - Sarah K. Nelson-Taylor
- Departments of Medicine, University of Colorado Anschutz Medical Campus, Aurora, CO80045, USA
| | - Raphael A. Nemenoff
- Departments of Medicine, University of Colorado Anschutz Medical Campus, Aurora, CO80045, USA
| | - Lynn E. Heasley
- Craniofacial Biology, University of Colorado Anschutz Medical Campus, Aurora, CO80045, USA
- Eastern Colorado VA Healthcare System, Rocky Mountain Regional VA Medical Center, Aurora, CO80045, USA
| | - Robert C. Doebele
- Departments of Medicine, University of Colorado Anschutz Medical Campus, Aurora, CO80045, USA
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Theard PL, Linke AJ, Sealover NE, Daley BR, Yang J, Cox K, Kortum RL. SOS2 regulates the threshold of mutant EGFR-dependent oncogenesis. BIORXIV : THE PREPRINT SERVER FOR BIOLOGY 2023:2023.01.20.524989. [PMID: 37425733 PMCID: PMC10327037 DOI: 10.1101/2023.01.20.524989] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 07/11/2023]
Abstract
Son of Sevenless 1 and 2 (SOS1 and SOS2) are RAS guanine nucleotide exchange factors (RasGEFs) that mediate physiologic and pathologic RTK-dependent RAS activation. Here, we show that SOS2 modulates the threshold of epidermal growth factor receptor (EGFR) signaling to regulate the efficacy of and resistance to the EGFR-TKI osimertinib in lung adenocarcinoma (LUAD). SOS2 deletion sensitized EGFR-mutated cells to perturbations in EGFR signaling caused by reduced serum and/or osimertinib treatment to inhibit PI3K/AKT pathway activation, oncogenic transformation, and survival. Bypass RTK reactivation of PI3K/AKT signaling represents a common resistance mechanism to EGFR-TKIs; SOS2 KO reduced PI3K/AKT reactivation to limit osimertinib resistance. In a forced HGF/MET-driven bypass model, SOS2 KO inhibited HGF-stimulated PI3K signaling to block HGF-driven osimertinib resistance. Using a long term in situ resistance assay, a majority of osimertinib resistant cultures exhibited a hybrid epithelial/mesenchymal phenotype associated with reactivated RTK/AKT signaling. In contrast, RTK/AKT-dependent osimertinib resistance was markedly reduced by SOS2 deletion; the few SOS2 KO cultures that became osimertinib resistant primarily underwent non-RTK dependent EMT. Since bypass RTK reactivation and/or tertiary EGFR mutations represent the majority of osimertinib-resistant cancers, these data suggest that targeting SOS2 has the potential to eliminate the majority of osimertinib resistance.
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Affiliation(s)
- Patricia L. Theard
- Department of Pharmacology and Molecular Therapeutics, Uniformed Services University of the Health Sciences, Bethesda, MD, USA 20814
| | - Amanda J. Linke
- Department of Pharmacology and Molecular Therapeutics, Uniformed Services University of the Health Sciences, Bethesda, MD, USA 20814
| | - Nancy E. Sealover
- Department of Pharmacology and Molecular Therapeutics, Uniformed Services University of the Health Sciences, Bethesda, MD, USA 20814
| | - Brianna R. Daley
- Department of Pharmacology and Molecular Therapeutics, Uniformed Services University of the Health Sciences, Bethesda, MD, USA 20814
| | - Johnny Yang
- Department of Pharmacology and Molecular Therapeutics, Uniformed Services University of the Health Sciences, Bethesda, MD, USA 20814
| | - Katherine Cox
- Department of Pharmacology and Molecular Therapeutics, Uniformed Services University of the Health Sciences, Bethesda, MD, USA 20814
| | - Robert L Kortum
- Department of Pharmacology and Molecular Therapeutics, Uniformed Services University of the Health Sciences, Bethesda, MD, USA 20814
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7
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Schubert L, Le AT, Hinz TK, Navarro A, Nelson-Taylor SK, Nemenoff RA, Heasley LE, Doebele RC. A Rapid, Functional sgRNA Screening Method for Generating Murine RET and NTRK1 Fusion Oncogenes. BIORXIV : THE PREPRINT SERVER FOR BIOLOGY 2023:2023.04.06.535912. [PMID: 37066347 PMCID: PMC10104125 DOI: 10.1101/2023.04.06.535912] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/18/2023]
Abstract
CRISPR/Cas9 gene editing technology is an indispensable and powerful tool in the field of cancer biology. To conduct successful CRISPR-based experiments, it is crucial that sgRNAs generate their designed alterations. Here, we describe a simple and efficient sgRNA screening method for validating sgRNAs that generate oncogenic gene rearrangements. We used IL3-independence in Ba/F3 cells as an assay to identify sgRNA pairs that generate fusion oncogenes involving the Ret and Ntrk1 tyrosine kinases. We confirmed these rearrangements with PCR or RT-PCR as well as sequencing. Ba/F3 cells harboring Ret or Ntrk1 rearrangements acquired sensitivity to RET and TRK inhibitors, respectively. Adenoviruses encoding Cas9 and sgRNAs that catalyze the Kif5b-Ret and Trim24-Ret rearrangements were intratracheally instilled into mice and yielded lung adenocarcinomas. A cell line (TR.1) was established from a Trim24-Ret positive tumor that exhibited high in vitro sensitivity to RET-specific TKIs. Moreover, orthotopic transplantation of TR.1 cells into the left lung yielded well-defined tumors that shrank in response to LOXO-292 treatment. The method offers an efficient means to validate sgRNAs that successfully target their intended loci for the generation of novel murine oncogene-driven tumor models.
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Affiliation(s)
- Laura Schubert
- Department of Medicine, University of Colorado Anschutz Medical Campus, Aurora, CO
| | - Anh T. Le
- Department of Medicine, University of Colorado Anschutz Medical Campus, Aurora, CO
| | - Trista K. Hinz
- Department of Craniofacial Biology, University of Colorado Anschutz Medical Campus, Aurora, CO
| | - Andre Navarro
- Department of Medicine, University of Colorado Anschutz Medical Campus, Aurora, CO
| | | | - Raphael A. Nemenoff
- Department of Medicine, University of Colorado Anschutz Medical Campus, Aurora, CO
| | - Lynn E. Heasley
- Department of Craniofacial Biology, University of Colorado Anschutz Medical Campus, Aurora, CO
- Eastern Colorado VA Healthcare System, Rocky Mountain Regional VA Medical Center, Aurora, CO
| | - Robert C. Doebele
- Department of Medicine, University of Colorado Anschutz Medical Campus, Aurora, CO
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8
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Wu G, Guo L, Gu Y, Huang T, Liu M, Zou X, Yang B, Huang P, Wen C, Yi L, Liao W, Zhao D, Zhu J, Zhang X, Liu Y, Yin Y, Chen S. The genomic characteristics of RET fusion positive tumors in Chinese non-small cell lung cancer (NSCLC) patients. J Cancer Res Clin Oncol 2023; 149:1019-1028. [PMID: 35220468 PMCID: PMC9984339 DOI: 10.1007/s00432-022-03959-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/30/2021] [Accepted: 02/14/2022] [Indexed: 10/19/2022]
Abstract
BACKGROUND Approximately 1-2% of non-small cell lung cancer (NSCLC) patients harbor RET (rearranged during transfection) fusions. The oncogenic RET fusions could lead to constitutive kinase activation and oncogenesis. METHODS 1746 Chinese NSCLC patients were analyzed in this study. Tumor tissues were collected, and were formalin fixed, paraffin-embedded (FFPE) and archived. Peripheral blood (PB) samples were also collected from each patient as control. In addition, we selected 17 of them for cfDNA NGS testing and 14 tumor samples for immunohistochemistry testing using PD-L1 rabbit monoclonal antibody, clones 28-8 (Abcam, Cambridge, UK). RESULTS Of the 1746 NSCLC cases, RET rearrangements were identified in 25 cases (1.43%) with locally advanced or metastatic NSCLC, of which 20 (80%) were female. We found that 14 out of 25 patients had an KIF5B-RET fusion, with KIF5B exon15-RET exon12, KIF5B exon23-RET exon12, and KIF5B exon24-RET exon11 detected in 14, 3, and 1 patients, respectively. We also identified one novel RET fusion partner PLCE1 and 4 intergenic-breakpoint fusions. CONCLUSION In this study, using the hybrid capture based next generation sequencing (NGS) techniques, we revealed the genomic profiling for the patients with RET fusion-positive NSCLC. To the best of our knowledge, this is the first study that exhibited the detailed breakpoints of Chinese NSCLC patients with RET rearrangement, and we found a novel new partner PLCE1. The results provided genomic information for patients with RET fusion which is significant for personalized clinical management in the era of precision medicine.
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Affiliation(s)
- Guowu Wu
- Department of Medical Oncology, Cancer Center, Meizhou People's Hospital (Huangtang Hospital), 63 Huangtang Road, Meizhou, China.
| | - Longhua Guo
- Department of Medical Oncology, Cancer Center, Meizhou People's Hospital (Huangtang Hospital), 63 Huangtang Road, Meizhou, China.
| | - Yinfang Gu
- Department of Medical Oncology, Cancer Center, Meizhou People's Hospital (Huangtang Hospital), 63 Huangtang Road, Meizhou, China
| | | | - Ming Liu
- HaploX Biotechnology Co., Ltd., Shenzhen, China
| | - Xiaofang Zou
- Department of Medical Oncology, Cancer Center, Meizhou People's Hospital (Huangtang Hospital), 63 Huangtang Road, Meizhou, China
| | - Bo Yang
- HaploX Biotechnology Co., Ltd., Shenzhen, China
| | - Ping Huang
- Department of Medical Oncology, Cancer Center, Meizhou People's Hospital (Huangtang Hospital), 63 Huangtang Road, Meizhou, China
| | - Chunling Wen
- Department of Medical Oncology, Cancer Center, Meizhou People's Hospital (Huangtang Hospital), 63 Huangtang Road, Meizhou, China
| | - Lilan Yi
- Department of Medical Oncology, Cancer Center, Meizhou People's Hospital (Huangtang Hospital), 63 Huangtang Road, Meizhou, China
| | | | - Dongdong Zhao
- Department of Medical Oncology, Cancer Center, Meizhou People's Hospital (Huangtang Hospital), 63 Huangtang Road, Meizhou, China
| | - Junlin Zhu
- Department of Medical Oncology, Cancer Center, Meizhou People's Hospital (Huangtang Hospital), 63 Huangtang Road, Meizhou, China
| | | | | | - Yan Yin
- HaploX Biotechnology Co., Ltd., Shenzhen, China
| | - Shifu Chen
- HaploX Biotechnology Co., Ltd., Shenzhen, China.
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9
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Zhong J, Bai H, Wang Z, Duan J, Zhuang W, Wang D, Wan R, Xu J, Fei K, Ma Z, Zhang X, Wang J. Treatment of advanced non-small cell lung cancer with driver mutations: current applications and future directions. Front Med 2023; 17:18-42. [PMID: 36848029 DOI: 10.1007/s11684-022-0976-4] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/22/2022] [Accepted: 12/05/2022] [Indexed: 03/01/2023]
Abstract
With the improved understanding of driver mutations in non-small cell lung cancer (NSCLC), expanding the targeted therapeutic options improved the survival and safety. However, responses to these agents are commonly temporary and incomplete. Moreover, even patients with the same oncogenic driver gene can respond diversely to the same agent. Furthermore, the therapeutic role of immune-checkpoint inhibitors (ICIs) in oncogene-driven NSCLC remains unclear. Therefore, this review aimed to classify the management of NSCLC with driver mutations based on the gene subtype, concomitant mutation, and dynamic alternation. Then, we provide an overview of the resistant mechanism of target therapy occurring in targeted alternations ("target-dependent resistance") and in the parallel and downstream pathways ("target-independent resistance"). Thirdly, we discuss the effectiveness of ICIs for NSCLC with driver mutations and the combined therapeutic approaches that might reverse the immunosuppressive tumor immune microenvironment. Finally, we listed the emerging treatment strategies for the new oncogenic alternations, and proposed the perspective of NSCLC with driver mutations. This review will guide clinicians to design tailored treatments for NSCLC with driver mutations.
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Affiliation(s)
- Jia Zhong
- State Key Laboratory of Molecular Oncology, Department of Medical Oncology, National Cancer Center/National Clinical Research Center for Cancer/Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, 100021, China
| | - Hua Bai
- State Key Laboratory of Molecular Oncology, Department of Medical Oncology, National Cancer Center/National Clinical Research Center for Cancer/Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, 100021, China
| | - Zhijie Wang
- State Key Laboratory of Molecular Oncology, Department of Medical Oncology, National Cancer Center/National Clinical Research Center for Cancer/Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, 100021, China
| | - Jianchun Duan
- State Key Laboratory of Molecular Oncology, Department of Medical Oncology, National Cancer Center/National Clinical Research Center for Cancer/Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, 100021, China
| | - Wei Zhuang
- State Key Laboratory of Molecular Oncology, Department of Medical Oncology, National Cancer Center/National Clinical Research Center for Cancer/Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, 100021, China
| | - Di Wang
- State Key Laboratory of Molecular Oncology, Department of Medical Oncology, National Cancer Center/National Clinical Research Center for Cancer/Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, 100021, China
| | - Rui Wan
- State Key Laboratory of Molecular Oncology, Department of Medical Oncology, National Cancer Center/National Clinical Research Center for Cancer/Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, 100021, China
| | - Jiachen Xu
- State Key Laboratory of Molecular Oncology, Department of Medical Oncology, National Cancer Center/National Clinical Research Center for Cancer/Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, 100021, China
| | - Kailun Fei
- State Key Laboratory of Molecular Oncology, Department of Medical Oncology, National Cancer Center/National Clinical Research Center for Cancer/Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, 100021, China
| | - Zixiao Ma
- State Key Laboratory of Molecular Oncology, Department of Medical Oncology, National Cancer Center/National Clinical Research Center for Cancer/Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, 100021, China
| | - Xue Zhang
- State Key Laboratory of Molecular Oncology, Department of Medical Oncology, National Cancer Center/National Clinical Research Center for Cancer/Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, 100021, China
| | - Jie Wang
- State Key Laboratory of Molecular Oncology, Department of Medical Oncology, National Cancer Center/National Clinical Research Center for Cancer/Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, 100021, China.
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10
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Rocco D, Sapio L, Della Gravara L, Naviglio S, Gridelli C. Treatment of Advanced Non-Small Cell Lung Cancer with RET Fusions: Reality and Hopes. Int J Mol Sci 2023; 24:ijms24032433. [PMID: 36768754 PMCID: PMC9916548 DOI: 10.3390/ijms24032433] [Citation(s) in RCA: 6] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/22/2022] [Revised: 01/18/2023] [Accepted: 01/23/2023] [Indexed: 01/28/2023] Open
Abstract
RET-selective tyrosine kinase inhibitors (TKIs) selpercatinib and pralsetinib have revolutionized the landscape of RET-positive (RET+) advanced non-small cell lung cancer (NSCLC) treatment, thanks to their efficacy and safety profiles. This class of medications currently represents the standard of care for both naïve and patients that have not received selective RET-TKIs in the first-line setting. However, we presently lack a satisfactory understanding of resistance mechanism developing after selective RET-TKIs usage, as well as a specific treatment for patients progressing on selpercatinib or pralsetinib. Chemotherapy ± immunotherapy is considered as a recommended subsequent second-line regimen in these patients. Therefore, it is of paramount importance to better define and understand the resistance mechanisms triggered by RET-TKIs. With this in mind, the present review article has been conceived to provide a comprehensive overview about RET+ advanced NSCLC, both from a therapeutic and molecular point of view. Besides comparing the clinical outcome achieved in RET+ advanced NSCLC patients after multikinase inhibitors (MKIs) and/or RET-selective TKIs' administration, we focused on the molecular mechanisms accountable for their long-term resistance. Finally, a critical perspective on many of today's most debated issues and concerns is provided, with the purpose of shaping the possible pharmacological approaches for tomorrow's therapies.
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Affiliation(s)
- Danilo Rocco
- Department of Pulmonary Oncology, AORN dei Colli Monaldi, 80131 Naples, Italy
| | - Luigi Sapio
- Department of Precision Medicine, University of Campania “Luigi Vanvitelli”, 80138 Naples, Italy
| | - Luigi Della Gravara
- Department of Experimental Medicine, University of Campania “Luigi Vanvitelli”, 80138 Naples, Italy
| | - Silvio Naviglio
- Department of Precision Medicine, University of Campania “Luigi Vanvitelli”, 80138 Naples, Italy
- Correspondence:
| | - Cesare Gridelli
- Division of Medical Oncology, ‘S.G. Moscati’ Hospital, 83100 Avellino, Italy
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11
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Wang X, Jiang W, Du Y, Zhu D, Zhang J, Fang C, Yan F, Chen ZS. Targeting feedback activation of signaling transduction pathways to overcome drug resistance in cancer. Drug Resist Updat 2022; 65:100884. [DOI: 10.1016/j.drup.2022.100884] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/12/2022] [Revised: 10/05/2022] [Accepted: 10/09/2022] [Indexed: 11/03/2022]
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12
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Tyler LC, Le AT, Chen N, Nijmeh H, Bao L, Wilson TR, Chen D, Simmons B, Turner KM, Perusse D, Kasibhatla S, Christiansen J, Dudek AZ, Doebele RC. MET gene amplification is a mechanism of resistance to entrectinib in ROS1+ NSCLC. Thorac Cancer 2022; 13:3032-3041. [PMID: 36101520 PMCID: PMC9626307 DOI: 10.1111/1759-7714.14656] [Citation(s) in RCA: 11] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/28/2022] [Revised: 08/29/2022] [Accepted: 08/30/2022] [Indexed: 01/07/2023] Open
Abstract
BACKGROUND ROS1 tyrosine kinase inhibitors (TKIs) have demonstrated significant clinical benefit for ROS1+ NSCLC patients. However, TKI resistance inevitably develops through ROS1 kinase domain (KD) modification or another kinase driving bypass signaling. While multiple TKIs have been designed to target ROS1 KD mutations, less is known about bypass signaling in TKI-resistant ROS1+ lung cancers. METHODS Utilizing a primary, patient-derived TPM3-ROS1 cell line (CUTO28), we derived an entrectinib-resistant line (CUTO28-ER). We evaluated proliferation and signaling responses to TKIs, and utilized RNA sequencing, whole exome sequencing, and fluorescence in situ hybridization to detect transcriptional, mutational, and copy number alterations, respectively. We substantiated in vitro findings using a CD74-ROS1 NSCLC patient's tumor samples. Last, we analyzed circulating tumor DNA (ctDNA) from ROS1+ NSCLC patients in the STARTRK-2 entrectinib trial to determine the prevalence of MET amplification. RESULTS CUTO28-ER cells did not exhibit ROS1 KD mutations. MET TKIs inhibited proliferation and downstream signaling and MET transcription was elevated in CUTO28-ER cells. CUTO28-ER cells displayed extrachromosomal (ecDNA) MET amplification without MET activating mutations, exon 14 skipping, or fusions. The CD74-ROS1 patient samples illustrated MET amplification while receiving ROS1 TKI. Finally, two of 105 (1.9%) entrectinib-resistant ROS1+ NSCLC STARTRK-2 patients with ctDNA analysis at enrollment and disease progression displayed MET amplification. CONCLUSIONS Treatment with ROS1-selective inhibitors may lead to MET-mediated resistance. The discovery of ecDNA MET amplification is noteworthy, as ecDNA is associated with more aggressive cancers. Following progression on ROS1-selective inhibitors, MET gene testing and treatments targeting MET should be explored to overcome MET-driven resistance.
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Affiliation(s)
- Logan C. Tyler
- Department of Medicine—Division of Medical OncologyUniversity of Colorado—Anschutz Medical CampusAuroraColoradoUSA
| | - Anh T. Le
- Department of Medicine—Division of Medical OncologyUniversity of Colorado—Anschutz Medical CampusAuroraColoradoUSA
| | - Nan Chen
- Department of Medicine—Division of Medical OncologyUniversity of Colorado—Anschutz Medical CampusAuroraColoradoUSA
| | - Hala Nijmeh
- Department of PathologyUniversity of Colorado—Anschutz Medical CampusAuroraColoradoUSA
| | - Liming Bao
- Department of PathologyUniversity of Colorado—Anschutz Medical CampusAuroraColoradoUSA
| | | | - David Chen
- Genentech, Inc.South San FranciscoCaliforniaUSA
| | | | | | | | | | | | - Arkadiusz Z. Dudek
- HealthPartners Cancer Center at Regions HospitalSt. PaulMinnesotaUSA,Department of Medicine—Division of Hematology, Oncologyand Transplantation University of MinnesotaMinneapolisMinnesotaUSA
| | - Robert C. Doebele
- Department of Medicine—Division of Medical OncologyUniversity of Colorado—Anschutz Medical CampusAuroraColoradoUSA
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13
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Saltiki K, Simeakis G, Karapanou O, Alevizaki M. MANAGEMENT OF ENDOCRINE DISEASE: Medullary thyroid cancer: from molecular biology and therapeutic pitfalls to future targeted treatment perspectives. Eur J Endocrinol 2022; 187:R53-R63. [PMID: 35895692 DOI: 10.1530/eje-22-0312] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/13/2022] [Accepted: 07/06/2022] [Indexed: 11/08/2022]
Abstract
During the last decades, knowledge of the molecular biology in medullary thyroid carcinoma (MTC) and specifically on the role of rearranged during transfection (RET)-activating mutations in tumorigenesis has led to the evolution of novel targeted therapies, mainly tyrosine kinase inhibitors (TKIs). Vandetanib and cabozantinib have been approved for the management of metastatic progressive MTC. Two novel, highly selective RET inhibitors, selpercatinib and pralsetinib, have recently been approved for the treatment of RET-mutant MTCs and RET-fusion differentiated thyroid cancer. The administration of targeted therapies in MTC patients has changed the therapeutic strategies; however, in the majority of cases, there are no real data showing an improvement of prognosis by TKIs in MTC. Drug resistance remains the main reason for treatment failure. Thus, the understanding of the molecular landscape of tumorigenesis and the mechanisms underlying resistance to targeted therapies is of paramount importance for the further development of more efficient therapies for MTC. The present review focuses on the molecular pathways implicated in MTC tumorigenesis, the approved targeted therapies, the tumoral escape mechanisms, as well as the future perspectives for targeted therapy.
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Affiliation(s)
- Katerina Saltiki
- Thyroid Neoplasia Unit, Department of Clinical Therapeutics, National Kapodistrian University of Athens, Medical School, Athens, Greece
| | - George Simeakis
- Department of Endocrinology, 401 Military Hospital, Athens, Greece
| | - Olga Karapanou
- Department of Endocrinology, 401 Military Hospital, Athens, Greece
| | - Maria Alevizaki
- Thyroid Neoplasia Unit, Department of Clinical Therapeutics, National Kapodistrian University of Athens, Medical School, Athens, Greece
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14
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Regua AT, Najjar M, Lo HW. RET signaling pathway and RET inhibitors in human cancer. Front Oncol 2022; 12:932353. [PMID: 35957881 PMCID: PMC9359433 DOI: 10.3389/fonc.2022.932353] [Citation(s) in RCA: 20] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/29/2022] [Accepted: 06/27/2022] [Indexed: 11/13/2022] Open
Abstract
Rearranged during transfection (RET) receptor tyrosine kinase was first identified over thirty years ago as a novel transforming gene. Since its discovery and subsequent pathway characterization, RET alterations have been identified in numerous cancer types and are most prevalent in thyroid carcinomas and non-small cell lung cancer (NSCLC). In other tumor types such as breast cancer and salivary gland carcinomas, RET alterations can be found at lower frequencies. Aberrant RET activity is associated with poor prognosis of thyroid and lung carcinoma patients, and is strongly correlated with increased risk of distant metastases. RET aberrations encompass a variety of genomic or proteomic alterations, most of which confer constitutive activation of RET. Activating RET alterations, such as point mutations or gene fusions, enhance activity of signaling pathways downstream of RET, namely PI3K/AKT, RAS/RAF, MAPK, and PLCγ pathways, to promote cell proliferation, growth, and survival. Given the important role that mutant RET plays in metastatic cancers, significant efforts have been made in developing inhibitors against RET kinase activity. These efforts have led to FDA approval of Selpercatinib and Pralsetinib for NSCLC, as well as, additional selective RET inhibitors in preclinical and clinical testing. This review covers the current biological understanding of RET signaling, the impact of RET hyperactivity on tumor progression in multiple tumor types, and RET inhibitors with promising preclinical and clinical efficacy.
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Affiliation(s)
- Angelina T. Regua
- Department of Cancer Biology, Wake Forest School of Medicine, Winston-Salem, NC, United States
| | - Mariana Najjar
- Department of Cancer Biology, Wake Forest School of Medicine, Winston-Salem, NC, United States
| | - Hui-Wen Lo
- Department of Cancer Biology, Wake Forest School of Medicine, Winston-Salem, NC, United States
- Wake Forest Baptist Comprehensive Cancer Center, Winston-Salem, NC, United States
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15
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Vodopivec DM, Hu MI. RET kinase inhibitors for RET-altered thyroid cancers. Ther Adv Med Oncol 2022; 14:17588359221101691. [PMID: 35756966 PMCID: PMC9218446 DOI: 10.1177/17588359221101691] [Citation(s) in RCA: 21] [Impact Index Per Article: 10.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/07/2021] [Accepted: 04/25/2022] [Indexed: 11/16/2022] Open
Abstract
Precision oncology has opened a new era in cancer treatment focused on targeting specific cellular pathways directly involved in tumorigenesis. The REarrangement during Transfection (RET) proto-oncogene is involved in the pathogenesis of various thyroid cancer subtypes. Mutations in RET give rise to both hereditary and sporadic medullary thyroid cancer (MTC). RET fusions are found in follicular cell-derived thyroid cancers (papillary, poorly differentiated, and anaplastic). Hence, drugs that block the RET tyrosine kinase receptor have been explored in the management of locally advanced or metastatic thyroid cancer. The multikinase inhibitors (MKIs) with nonselective RET inhibition are sorafenib, lenvatinib, vandetanib, cabozantinib, and sunitinib. Although the efficacy of these drugs varies, a major issue is the lack of specificity resulting in a higher rate of drug-related toxicities, leading to dose reduction, interruption, or discontinuation. Moreover, MKIs are subject to drug resistance by RET Val804 residue gatekeeper mutations. In phase I/II clinical studies, the highly selective first-generation RET inhibitors, selpercatinib and pralsetinib, demonstrate high efficacy in controlling disease even in the presence of gatekeeper mutations combined with greater tolerability. However, resistance mechanisms such as RET solvent front mutations (SFMs) have evolved in some patients, giving the need to develop the selective second-generation RET inhibitors. Although the approval of selpercatinib and pralsetinib in 2020 has profoundly benefited patients with RET-altered thyroid cancer, further research into optimal treatment strategies, mechanisms of drug resistance, long-term consequences of potent RET-inhibition, and development of more effective agents against emergent mutations are much needed.
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Affiliation(s)
- Danica M Vodopivec
- Department of Endocrine Neoplasia and Hormonal Disorders, The University of Texas MD Anderson Cancer Center, Houston, TX 77030-4000, USA
| | - Mimi I Hu
- Department of Endocrine Neoplasia and Hormonal Disorders, The University of Texas MD Anderson Cancer Center, Houston, TX, USA
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16
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Belluomini L, Avancini A, Pasqualin L, Insolda J, Sposito M, Menis J, Tregnago D, Trestini I, Ferrara MG, Bria E, Milella M, Pilotto S. Selpercatinib in RET-fusion positive metastatic non-small cell lung cancer: achievements and gray areas. Expert Rev Anticancer Ther 2022; 22:785-794. [PMID: 35726802 DOI: 10.1080/14737140.2022.2093190] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
Abstract
INTRODUCTION Selpercatinib is a RET selective tyrosine kinase inhibitor with nanomolar potency against diverse RET alterations, including fusions, activating point mutations, and acquired resistance mutations. Rearranged during transfection (RET) gene is a validated target in non-small-cell lung cancer (NSCLC). Selpercatinib is currently approved for adult patients with metastatic RET fusion-positive NSCLC. AREAS COVERED This review summarizes the efficacy and safety data of selpercatinib in the treatment landscape of RET fusion-positive NSCLC. EXPERT OPINION Globally considered, selpercatinib is an optimal treatment choice, in terms of both (systemic and intracranial) efficacy and safety, in patients affected by advanced NSCLC harboring RET fusions as a driver mechanism. Future challenges include the identification of the most appropriate placement for selpercatinib in the treatment algorithm of RET fusion-positive NSCLC (including early stages), the clarification of resistance mechanisms, as well as of its role in EGFR-mutant NSCLC undergoing progression during osimertinib driven by RET alterations.
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Affiliation(s)
- Lorenzo Belluomini
- Section of Oncology, Department of Medicine, University of Verona School of Medicine and Verona University Hospital Trust, Verona, Italy
| | - Alice Avancini
- Section of Oncology, Department of Medicine, University of Verona School of Medicine and Verona University Hospital Trust, Verona, Italy.,Department of Neurosciences, Biomedicine and Movement Sciences, University of Verona, Verona, Italy
| | - Luca Pasqualin
- Section of Oncology, Department of Medicine, University of Verona School of Medicine and Verona University Hospital Trust, Verona, Italy
| | - Jessica Insolda
- Section of Oncology, Department of Medicine, University of Verona School of Medicine and Verona University Hospital Trust, Verona, Italy
| | - Marco Sposito
- Section of Oncology, Department of Medicine, University of Verona School of Medicine and Verona University Hospital Trust, Verona, Italy
| | - Jessica Menis
- Section of Oncology, Department of Medicine, University of Verona School of Medicine and Verona University Hospital Trust, Verona, Italy
| | - Daniela Tregnago
- Section of Oncology, Department of Medicine, University of Verona School of Medicine and Verona University Hospital Trust, Verona, Italy
| | - Ilaria Trestini
- Section of Oncology, Department of Medicine, University of Verona School of Medicine and Verona University Hospital Trust, Verona, Italy
| | - Miriam Grazia Ferrara
- Comprehensive Cancer Center, Fondazione Policlinico Universitario Agostino Gemelli IRCCS, Roma, Italy.,Medical Oncology, Università Cattolica Del Sacro Cuore, Roma, Italy
| | - Emilio Bria
- Comprehensive Cancer Center, Fondazione Policlinico Universitario Agostino Gemelli IRCCS, Roma, Italy.,Medical Oncology, Università Cattolica Del Sacro Cuore, Roma, Italy
| | - Michele Milella
- Section of Oncology, Department of Medicine, University of Verona School of Medicine and Verona University Hospital Trust, Verona, Italy
| | - Sara Pilotto
- Section of Oncology, Department of Medicine, University of Verona School of Medicine and Verona University Hospital Trust, Verona, Italy
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17
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Zhao L, Mei Q, Yu Y, Wang N, Zhang D, Liao D, Zuo J, Xie H, Jia Y, Kong F. Research Progress on RET Fusion in Non-Small-Cell Lung Cancer. Front Oncol 2022; 12:894214. [PMID: 35707347 PMCID: PMC9190697 DOI: 10.3389/fonc.2022.894214] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/11/2022] [Accepted: 05/02/2022] [Indexed: 11/24/2022] Open
Abstract
Great progress has been made in the treatment of driver gene-positive Non- Small Cell Lung Cancer (NSCLC) in recent years. RET fusion was seen in 0.7% to 2% of NSCLC and was associated with younger age and never-smoker status. The pralsetinib and selpercatinib for RET fusion NSCLC was recommended by the 2021 NSCLC treatment guidelines. This review outlines the research progress in the treatment of RET fusion NSCLC, identifies current challenges and describes proposals for improving the outlook for these patients.
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Affiliation(s)
- Lu Zhao
- Department of Oncology, First Teaching Hospital of Tianjin University of Traditional Chinese Medicine, Tianjin, China.,National Clinical Research Center for Chinese Medicine Acupuncture and Moxibustion, Tianjin, China
| | - Qingyun Mei
- Department of Oncology, First Teaching Hospital of Tianjin University of Traditional Chinese Medicine, Tianjin, China.,National Clinical Research Center for Chinese Medicine Acupuncture and Moxibustion, Tianjin, China
| | - Yongchao Yu
- Department of Oncology, First Teaching Hospital of Tianjin University of Traditional Chinese Medicine, Tianjin, China.,National Clinical Research Center for Chinese Medicine Acupuncture and Moxibustion, Tianjin, China
| | - Na Wang
- Department of Oncology, First Teaching Hospital of Tianjin University of Traditional Chinese Medicine, Tianjin, China.,National Clinical Research Center for Chinese Medicine Acupuncture and Moxibustion, Tianjin, China
| | - Dou Zhang
- Department of Oncology, First Teaching Hospital of Tianjin University of Traditional Chinese Medicine, Tianjin, China.,National Clinical Research Center for Chinese Medicine Acupuncture and Moxibustion, Tianjin, China
| | - Dongying Liao
- Department of Oncology, First Teaching Hospital of Tianjin University of Traditional Chinese Medicine, Tianjin, China.,National Clinical Research Center for Chinese Medicine Acupuncture and Moxibustion, Tianjin, China
| | - Jinhui Zuo
- Department of Oncology, First Teaching Hospital of Tianjin University of Traditional Chinese Medicine, Tianjin, China.,National Clinical Research Center for Chinese Medicine Acupuncture and Moxibustion, Tianjin, China
| | - Hongxia Xie
- Department of Oncology, First Teaching Hospital of Tianjin University of Traditional Chinese Medicine, Tianjin, China.,National Clinical Research Center for Chinese Medicine Acupuncture and Moxibustion, Tianjin, China
| | - Yingjie Jia
- Department of Oncology, First Teaching Hospital of Tianjin University of Traditional Chinese Medicine, Tianjin, China.,National Clinical Research Center for Chinese Medicine Acupuncture and Moxibustion, Tianjin, China
| | - Fanming Kong
- Department of Oncology, First Teaching Hospital of Tianjin University of Traditional Chinese Medicine, Tianjin, China.,National Clinical Research Center for Chinese Medicine Acupuncture and Moxibustion, Tianjin, China
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18
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Pralsetinib: chemical and therapeutic development with FDA authorization for the management of RET fusion-positive non-small-cell lung cancers. Arch Pharm Res 2022; 45:309-327. [DOI: 10.1007/s12272-022-01385-3] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/09/2021] [Accepted: 05/17/2022] [Indexed: 12/27/2022]
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19
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Román-Gil MS, Pozas J, Rosero-Rodríguez D, Chamorro-Pérez J, Ruiz-Granados Á, Caracuel IR, Grande E, Molina-Cerrillo J, Alonso-Gordoa T. Resistance to RET targeted therapy in Thyroid Cancer: Molecular basis and overcoming strategies. Cancer Treat Rev 2022; 105:102372. [DOI: 10.1016/j.ctrv.2022.102372] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/12/2022] [Revised: 02/24/2022] [Accepted: 02/25/2022] [Indexed: 12/07/2022]
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20
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The evolution of RET inhibitor resistance in RET-driven lung and thyroid cancers. Nat Commun 2022; 13:1450. [PMID: 35304457 PMCID: PMC8933489 DOI: 10.1038/s41467-022-28848-x] [Citation(s) in RCA: 41] [Impact Index Per Article: 20.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/19/2021] [Accepted: 02/11/2022] [Indexed: 12/27/2022] Open
Abstract
The efficacy of the highly selective RET inhibitor selpercatinib is now established in RET-driven cancers, and we sought to characterize the molecular determinants of response and resistance. We find that the pre-treatment genomic landscape does not shape the variability of treatment response except for rare instances of RAS-mediated primary resistance. By contrast, acquired selpercatinib resistance is driven by MAPK pathway reactivation by one of two distinct routes. In some patients, on- and off-target pathway reactivation via secondary RET solvent front mutations or MET amplifications are evident. In other patients, rare RET-wildtype tumor cell populations driven by an alternative mitogenic driver are selected for by treatment. Multiple distinct mechanisms are often observed in the same patient, suggesting polyclonal resistance may be common. Consequently, sequential RET-directed therapy may require combination treatment with inhibitors targeting alternative MAPK effectors, emphasizing the need for prospective characterization of selpercatinib-treated tumors at the time of monotherapy progression. The results of the phase 1/2 LIBRETTO-001 clinical trial has recently established the efficacy of the RET inhibitor selpercatinib in RET-driven cancers. Here, the authors characterize the molecular determinants of response and resistance in 72 LIBRETTO-001 lung and thyroid cancer patients treated at a single site.
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21
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Molecular Testing and Treatment Strategies in RET-Rearranged NSCLC Patients: Stay on Target to Look Forward. JOURNAL OF MOLECULAR PATHOLOGY 2022. [DOI: 10.3390/jmp3010003] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
RET alterations are recognized as key oncogenic drivers in different cancer types, including non-small cell lung cancer (NSCLC). Multikinase inhibitors (MKIs) with anti-RET activities resulted in variable efficacy with significant toxicities because of low target specificity. Selective RET kinase inhibitors, such as pralsetinib and selepercatinib, demonstrated high efficacy and favorable tolerability in advanced RET-rearranged NSCLC patients, leading to their introduction in the clinical setting. Among the different approaches available for the identification of RET rearrangements, next-generation sequencing (NGS) assays present substantial advantages in terms of turnaround time and diagnostic accuracy, even if potentially limited by accessibility issues. The recent advent of novel effective targeted therapies raises several questions regarding the emergence of resistance mechanisms and the potential ways to prevent/overcome them. In this review, we discuss molecular testing and treatment strategies to manage RET fusion positive NSCLC patients with a focus on resistance mechanisms and future perspectives in this rapidly evolving scenario.
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22
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Thein KZ, Velcheti V, Mooers BHM, Wu J, Subbiah V. Precision therapy for RET-altered cancers with RET inhibitors. Trends Cancer 2021; 7:1074-1088. [PMID: 34391699 PMCID: PMC8599646 DOI: 10.1016/j.trecan.2021.07.003] [Citation(s) in RCA: 77] [Impact Index Per Article: 25.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/25/2021] [Revised: 07/17/2021] [Accepted: 07/22/2021] [Indexed: 11/24/2022]
Abstract
Rearranged during transfection (RET) is involved in the physiological development of some organ systems. Activating RET alterations via either gene fusions or point mutations are potent oncogenic drivers in non-small cell lung cancer, thyroid cancer, and in multiple diverse cancers. RET-altered cancers were initially treated with multikinase inhibitors (MKIs). The efficacy of MKIs was modest at the expense of notable toxicities from their off-target activity. Recently, highly potent and RET-specific inhibitors selpercatinib and pralsetinib were successfully translated to the clinic and FDA approved. We summarize the current state-of-the-art therapeutics with preclinical and clinical insights of these novel RET inhibitors, acquired resistance mechanisms, and future outlooks.
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Affiliation(s)
- Kyaw Z Thein
- Department of Investigational Cancer Therapeutics, Division of Cancer Medicine, The University of Texas MD Anderson Cancer Center, Houston, TX 77030, USA; Division of Hematology and Medical Oncology, Oregon Health and Science University/Knight Cancer Institute, Portland, OR 97239, USA
| | - Vamsidhar Velcheti
- Department of Medicine, NYU Langone- Laura and Isaac Perlmutter Cancer Center, New York, NY 10016, USA
| | - Blaine H M Mooers
- Peggy and Charles Stephenson Cancer Center, University of Oklahoma Health Sciences Center, Oklahoma City, OK 73104, USA; Department of Biochemistry and Molecular Biology, University of Oklahoma Health Sciences Center, Oklahoma City, OK 73104, USA; Laboratory of Biomolecular Structure and Function, University of Oklahoma Health Sciences Center, Oklahoma City, OK 73104, USA
| | - Jie Wu
- Peggy and Charles Stephenson Cancer Center, University of Oklahoma Health Sciences Center, Oklahoma City, OK 73104, USA; Department of Pathology, University of Oklahoma Health Sciences Center, Oklahoma City, OK 73104, USA
| | - Vivek Subbiah
- Department of Investigational Cancer Therapeutics, Division of Cancer Medicine, The University of Texas MD Anderson Cancer Center, Houston, TX 77030, USA; Division of Pediatrics, The University of Texas MD Anderson Cancer Center, Houston, TX 77030, USA; MD Anderson Cancer Network, The University of Texas MD Anderson Cancer Center, Houston, TX 77030, USA.
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23
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Cheng Y, Zhang T, Xu Q. Therapeutic advances in non-small cell lung cancer: Focus on clinical development of targeted therapy and immunotherapy. MedComm (Beijing) 2021; 2:692-729. [PMID: 34977873 PMCID: PMC8706764 DOI: 10.1002/mco2.105] [Citation(s) in RCA: 34] [Impact Index Per Article: 11.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/06/2021] [Revised: 11/20/2021] [Accepted: 11/22/2021] [Indexed: 02/05/2023] Open
Abstract
Lung cancer still contributes to nearly one-quarter cancer-related deaths in the past decades, despite the rapid development of targeted therapy and immunotherapy in non-small cell lung cancer (NSCLC). The development and availability of comprehensive genomic profiling make the classification of NSCLC more precise and personalized. Most treatment decisions of advanced-stage NSCLC have been made based on the genetic features and PD-L1 expression of patients. For the past 2 years, more than 10 therapeutic strategies have been approved as first-line treatment for certain subgroups of NSCLC. However, some major challenges remain, including drug resistance and low rate of overall survival. Therefore, we discuss and review the therapeutic strategies of NSCLC, and focus on the development of targeted therapy and immunotherapy in advanced-stage NSCLC. Based on the latest guidelines, we provide an updated summary on the standard treatment for NSCLC. At last, we discussed several potential therapies for NSCLC. The development of new drugs and combination therapies both provide promising therapeutic effects on NSCLC.
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Affiliation(s)
- Yuan Cheng
- Laboratory of Aging Research and Cancer Drug TargetState Key Laboratory of Biotherapy and Cancer CenterNational Clinical Research Center for GeriatricsWest China HospitalSichuan UniversityChengduChina
| | - Tao Zhang
- Laboratory of Aging Research and Cancer Drug TargetState Key Laboratory of Biotherapy and Cancer CenterNational Clinical Research Center for GeriatricsWest China HospitalSichuan UniversityChengduChina
| | - Qing Xu
- Department of OncologyShanghai Tenth People's HospitalTongji University School of MedicineShanghaiChina
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24
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Peters TL, Patil T, Le AT, Davies KD, Brzeskiewicz PM, Nijmeh H, Bao L, Camidge DR, Aisner DL, Doebele RC. Evolution of MET and NRAS gene amplification as acquired resistance mechanisms in EGFR mutant NSCLC. NPJ Precis Oncol 2021; 5:91. [PMID: 34642436 PMCID: PMC8511249 DOI: 10.1038/s41698-021-00231-x] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/08/2020] [Accepted: 09/22/2021] [Indexed: 12/14/2022] Open
Abstract
EGFR mutant non-small cell lung cancer patients' disease demonstrates remarkable responses to EGFR-targeted therapy, but inevitably they succumb to acquired resistance, which can be complex and difficult to treat. Analyzing acquired resistance through broad molecular testing is crucial to understanding the resistance mechanisms and developing new treatment options. We performed diverse clinical testing on a patient with successive stages of acquired resistance, first to an EGFR inhibitor with MET gene amplification and then subsequently to a combination EGFR and MET targeted therapies. A patient-derived cell line obtained at the time of disease progression was used to identify NRAS gene amplification as an additional driver of drug resistance to combination EGFR/MET therapies. Analysis of downstream signaling revealed extracellular signal-related kinase activation that could only be eliminated by trametinib treatment, while Akt activation could be modulated by various combinations of MET, EGFR, and PI3K inhibitors. The combination of an EGFR inhibitor with a MEK inhibitor was identified as a possible treatment option to overcome drug resistance related to NRAS gene amplification.
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Affiliation(s)
- T L Peters
- Department of Medicine, Division of Medical Oncology, University of Colorado- Anschutz Medical Campus, Aurora, CO, USA
| | - T Patil
- Department of Medicine, Division of Medical Oncology, University of Colorado- Anschutz Medical Campus, Aurora, CO, USA
| | - A T Le
- Department of Medicine, Division of Medical Oncology, University of Colorado- Anschutz Medical Campus, Aurora, CO, USA
| | - K D Davies
- Department of Pathology, University of Colorado- Anschutz Medical Campus, Aurora, CO, USA
| | - P M Brzeskiewicz
- Department of Pathology, University of Colorado- Anschutz Medical Campus, Aurora, CO, USA
| | - H Nijmeh
- Department of Pathology, University of Colorado- Anschutz Medical Campus, Aurora, CO, USA
| | - L Bao
- Department of Pathology, University of Colorado- Anschutz Medical Campus, Aurora, CO, USA
| | - D R Camidge
- Department of Medicine, Division of Medical Oncology, University of Colorado- Anschutz Medical Campus, Aurora, CO, USA
| | - D L Aisner
- Department of Pathology, University of Colorado- Anschutz Medical Campus, Aurora, CO, USA
| | - R C Doebele
- Department of Medicine, Division of Medical Oncology, University of Colorado- Anschutz Medical Campus, Aurora, CO, USA.
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25
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Schubert L, Le AT, Estrada-Bernal A, Doak AE, Yoo M, Ferrara SE, Goodspeed A, Kinose F, Rix U, Tan AC, Doebele RC. Novel Human-Derived RET Fusion NSCLC Cell Lines Have Heterogeneous Responses to RET Inhibitors and Differential Regulation of Downstream Signaling. Mol Pharmacol 2021; 99:435-447. [PMID: 33795352 PMCID: PMC11033948 DOI: 10.1124/molpharm.120.000207] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/15/2020] [Accepted: 03/08/2021] [Indexed: 12/16/2022] Open
Abstract
Rearranged during transfection (RET) rearrangements occur in 1% to 2% of lung adenocarcinomas as well as other malignancies and are now established targets for tyrosine kinase inhibitors. We developed three novel RET fusion-positive (RET+) patient-derived cancer cell lines, CUTO22 [kinesin 5B (KIF5B)-RET fusion], CUTO32 (KIF5B-RET fusion), and CUTO42 (echinoderm microtubule-associated protein-like 4-RET fusion), to study RET signaling and response to therapy. We confirmed each of our cell lines expresses the RET fusion protein and assessed their sensitivity to RET inhibitors. We found that the CUTO22 and CUTO42 cell lines were sensitive to multiple RET inhibitors, whereas the CUTO32 cell line was >10-fold more resistant to three RET inhibitors. We discovered that our RET+ cell lines had differential regulation of the mitogen-activated protein kinase and phosphoinositide 3-kinase/protein kinase B (AKT) pathways. After inhibition of RET, the CUTO42 cells had robust inhibition of phosphorylated AKT (pAKT), whereas CUTO22 and CUTO32 cells had sustained AKT activation. Next, we performed a drug screen, which revealed that the CUTO32 cells were sensitive (<1 nM IC50) to inhibition of two cell cycle-regulating proteins, polo-like kinase 1 and Aurora kinase A. Finally, we show that two of these cell lines, CUTO32 and CUTO42, successfully establish xenografted tumors in nude mice. We demonstrated that the RET inhibitor BLU-667 was effective at inhibiting tumor growth in CUTO42 tumors but had a much less profound effect in CUTO32 tumors, consistent with our in vitro experiments. These data highlight the utility of new RET+ models to elucidate differences in response to tyrosine kinase inhibitors and downstream signaling regulation. Our RET+ cell lines effectively recapitulate the interpatient heterogeneity observed in response to RET inhibitors and reveal opportunities for alternative or combination therapies. SIGNIFICANCE STATEMENT: We have derived and characterized three novel rearranged during transfection (RET) fusion non-small cell lung cancer cell lines and demonstrated that they have differential responses to RET inhibition as well as regulation of downstream signaling, an area that has previously been limited by a lack of diverse cell line modes with endogenous RET fusions. These data offer important insight into regulation of response to RET tyrosine kinase inhibitors and other potential therapeutic targets.
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Affiliation(s)
- Laura Schubert
- Department of Medicine, Division of Medical Oncology, University of Colorado School of Medicine, Aurora, Colorado (L.S., A.T.L., A.E.-B., A.E.D., M.Y., A.-C.T., R.C.D.); University of Colorado Comprehensive Cancer Center, University of Colorado Anschutz Medical Campus, Aurora, Colorado (S.E.F., A.G.); Department of Pharmacology, University of Colorado Anschutz Medical Campus, Aurora, Colorado (A.G.); and Department of Thoracic Oncology (F.K.), Department of Drug Discovery (U.R.), and Department of Biostatistics and Bioinformatics (A.-C.T.), Moffitt Cancer Center, Tampa, Florida
| | - Anh T Le
- Department of Medicine, Division of Medical Oncology, University of Colorado School of Medicine, Aurora, Colorado (L.S., A.T.L., A.E.-B., A.E.D., M.Y., A.-C.T., R.C.D.); University of Colorado Comprehensive Cancer Center, University of Colorado Anschutz Medical Campus, Aurora, Colorado (S.E.F., A.G.); Department of Pharmacology, University of Colorado Anschutz Medical Campus, Aurora, Colorado (A.G.); and Department of Thoracic Oncology (F.K.), Department of Drug Discovery (U.R.), and Department of Biostatistics and Bioinformatics (A.-C.T.), Moffitt Cancer Center, Tampa, Florida
| | - Adriana Estrada-Bernal
- Department of Medicine, Division of Medical Oncology, University of Colorado School of Medicine, Aurora, Colorado (L.S., A.T.L., A.E.-B., A.E.D., M.Y., A.-C.T., R.C.D.); University of Colorado Comprehensive Cancer Center, University of Colorado Anschutz Medical Campus, Aurora, Colorado (S.E.F., A.G.); Department of Pharmacology, University of Colorado Anschutz Medical Campus, Aurora, Colorado (A.G.); and Department of Thoracic Oncology (F.K.), Department of Drug Discovery (U.R.), and Department of Biostatistics and Bioinformatics (A.-C.T.), Moffitt Cancer Center, Tampa, Florida
| | - Andrea E Doak
- Department of Medicine, Division of Medical Oncology, University of Colorado School of Medicine, Aurora, Colorado (L.S., A.T.L., A.E.-B., A.E.D., M.Y., A.-C.T., R.C.D.); University of Colorado Comprehensive Cancer Center, University of Colorado Anschutz Medical Campus, Aurora, Colorado (S.E.F., A.G.); Department of Pharmacology, University of Colorado Anschutz Medical Campus, Aurora, Colorado (A.G.); and Department of Thoracic Oncology (F.K.), Department of Drug Discovery (U.R.), and Department of Biostatistics and Bioinformatics (A.-C.T.), Moffitt Cancer Center, Tampa, Florida
| | - Minjae Yoo
- Department of Medicine, Division of Medical Oncology, University of Colorado School of Medicine, Aurora, Colorado (L.S., A.T.L., A.E.-B., A.E.D., M.Y., A.-C.T., R.C.D.); University of Colorado Comprehensive Cancer Center, University of Colorado Anschutz Medical Campus, Aurora, Colorado (S.E.F., A.G.); Department of Pharmacology, University of Colorado Anschutz Medical Campus, Aurora, Colorado (A.G.); and Department of Thoracic Oncology (F.K.), Department of Drug Discovery (U.R.), and Department of Biostatistics and Bioinformatics (A.-C.T.), Moffitt Cancer Center, Tampa, Florida
| | - Sarah E Ferrara
- Department of Medicine, Division of Medical Oncology, University of Colorado School of Medicine, Aurora, Colorado (L.S., A.T.L., A.E.-B., A.E.D., M.Y., A.-C.T., R.C.D.); University of Colorado Comprehensive Cancer Center, University of Colorado Anschutz Medical Campus, Aurora, Colorado (S.E.F., A.G.); Department of Pharmacology, University of Colorado Anschutz Medical Campus, Aurora, Colorado (A.G.); and Department of Thoracic Oncology (F.K.), Department of Drug Discovery (U.R.), and Department of Biostatistics and Bioinformatics (A.-C.T.), Moffitt Cancer Center, Tampa, Florida
| | - Andrew Goodspeed
- Department of Medicine, Division of Medical Oncology, University of Colorado School of Medicine, Aurora, Colorado (L.S., A.T.L., A.E.-B., A.E.D., M.Y., A.-C.T., R.C.D.); University of Colorado Comprehensive Cancer Center, University of Colorado Anschutz Medical Campus, Aurora, Colorado (S.E.F., A.G.); Department of Pharmacology, University of Colorado Anschutz Medical Campus, Aurora, Colorado (A.G.); and Department of Thoracic Oncology (F.K.), Department of Drug Discovery (U.R.), and Department of Biostatistics and Bioinformatics (A.-C.T.), Moffitt Cancer Center, Tampa, Florida
| | - Fumi Kinose
- Department of Medicine, Division of Medical Oncology, University of Colorado School of Medicine, Aurora, Colorado (L.S., A.T.L., A.E.-B., A.E.D., M.Y., A.-C.T., R.C.D.); University of Colorado Comprehensive Cancer Center, University of Colorado Anschutz Medical Campus, Aurora, Colorado (S.E.F., A.G.); Department of Pharmacology, University of Colorado Anschutz Medical Campus, Aurora, Colorado (A.G.); and Department of Thoracic Oncology (F.K.), Department of Drug Discovery (U.R.), and Department of Biostatistics and Bioinformatics (A.-C.T.), Moffitt Cancer Center, Tampa, Florida
| | - Uwe Rix
- Department of Medicine, Division of Medical Oncology, University of Colorado School of Medicine, Aurora, Colorado (L.S., A.T.L., A.E.-B., A.E.D., M.Y., A.-C.T., R.C.D.); University of Colorado Comprehensive Cancer Center, University of Colorado Anschutz Medical Campus, Aurora, Colorado (S.E.F., A.G.); Department of Pharmacology, University of Colorado Anschutz Medical Campus, Aurora, Colorado (A.G.); and Department of Thoracic Oncology (F.K.), Department of Drug Discovery (U.R.), and Department of Biostatistics and Bioinformatics (A.-C.T.), Moffitt Cancer Center, Tampa, Florida
| | - Aik-Choon Tan
- Department of Medicine, Division of Medical Oncology, University of Colorado School of Medicine, Aurora, Colorado (L.S., A.T.L., A.E.-B., A.E.D., M.Y., A.-C.T., R.C.D.); University of Colorado Comprehensive Cancer Center, University of Colorado Anschutz Medical Campus, Aurora, Colorado (S.E.F., A.G.); Department of Pharmacology, University of Colorado Anschutz Medical Campus, Aurora, Colorado (A.G.); and Department of Thoracic Oncology (F.K.), Department of Drug Discovery (U.R.), and Department of Biostatistics and Bioinformatics (A.-C.T.), Moffitt Cancer Center, Tampa, Florida
| | - Robert C Doebele
- Department of Medicine, Division of Medical Oncology, University of Colorado School of Medicine, Aurora, Colorado (L.S., A.T.L., A.E.-B., A.E.D., M.Y., A.-C.T., R.C.D.); University of Colorado Comprehensive Cancer Center, University of Colorado Anschutz Medical Campus, Aurora, Colorado (S.E.F., A.G.); Department of Pharmacology, University of Colorado Anschutz Medical Campus, Aurora, Colorado (A.G.); and Department of Thoracic Oncology (F.K.), Department of Drug Discovery (U.R.), and Department of Biostatistics and Bioinformatics (A.-C.T.), Moffitt Cancer Center, Tampa, Florida
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26
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Wu Y, Gao W, Liu H. Role of metabolic reprogramming in drug resistance to epidermal growth factor tyrosine kinase inhibitors in non-small cell lung cancer. ZHONG NAN DA XUE XUE BAO. YI XUE BAN = JOURNAL OF CENTRAL SOUTH UNIVERSITY. MEDICAL SCIENCES 2021; 46:545-551. [PMID: 34148892 PMCID: PMC10930213 DOI: 10.11817/j.issn.1672-7347.2021.200529] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Subscribe] [Scholar Register] [Received: 06/03/2020] [Indexed: 11/03/2022]
Abstract
Epidermal growth factor receptor tyrosine kinase inhibitor (EGFR-TKI) can effectively inhibit the growth of EGFR-dependent mutant non-small cell lung cancer (NSCLC). Unfortunately, NSCLC patients often develop severe drug resistance after long-term EGFR-TKI treatment. Studies have shown that the disorder of energy metabolism in tumor cells can induce EGFR-TKI resistance. Due to the drug action, gene mutation and other factors, tumor cells undergo metabolic reprogramming, which increases the metabolic rate and intensity of tumor cells, promotes the intake and synthesis of nutrients (such as sugar, fat and glutamine), forms a microenvironment conducive to tumor growth, enhances the bypass activation, phenotype transformation and abnormal proliferation of tumor cells, and inhibits the activity of immune cells and apoptosis of tumor cells, ultimately leading to drug resistance of tumor cells to EGFR-TKI. Therefore, targeting energy metabolism of NSCLC may be a potential way to alleviate TKI resistance.
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Affiliation(s)
- Yu Wu
- Department of Pharmacology, School of Pharmacy, Bengbu Medical College; Anhui Provincial Biochemical Drugs Engineering Technology Research Center, Bengbu Anhui 233030, China.
| | - Wei Gao
- Department of Pharmacology, School of Pharmacy, Bengbu Medical College; Anhui Provincial Biochemical Drugs Engineering Technology Research Center, Bengbu Anhui 233030, China.
| | - Hao Liu
- Department of Pharmacology, School of Pharmacy, Bengbu Medical College; Anhui Provincial Biochemical Drugs Engineering Technology Research Center, Bengbu Anhui 233030, China.
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27
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Treatment of Rare Mutations in Patients with Lung Cancer. Biomedicines 2021; 9:biomedicines9050534. [PMID: 34064757 PMCID: PMC8151457 DOI: 10.3390/biomedicines9050534] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/21/2021] [Revised: 05/05/2021] [Accepted: 05/06/2021] [Indexed: 12/24/2022] Open
Abstract
Lung cancer is a worldwide prevalent malignancy. This disease has a low survival rate due to diagnosis at a late stage challenged by the involvement of metastatic sites. Non-small-cell lung cancer (NSCLC) is presented in 85% of cases. The last decade has experienced substantial advancements in scientific research, leading to a novel targeted therapeutic approach. The newly developed pharmaceutical agents are aimed towards specific mutations, detected in individual patients inflicted by lung cancer. These drugs have longer and improved response rates compared to traditional chemotherapy. Recent studies were able to identify rare mutations found in pulmonary tumors. Among the gene alterations detected were mesenchymal epithelial transition factor (MET), human epidermal growth factor 2 (HER2), B-type Raf kinase (BRAF), c-ROS proto-oncogene (ROS1), rearranged during transfection (RET) and neurotrophic tyrosine kinase (NTRK). Ongoing clinical trials are gaining insight onto possible first and second lines of medical treatment options intended to enable progression-free survival to lung cancer patients.
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28
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Aldea M, Andre F, Marabelle A, Dogan S, Barlesi F, Soria JC. Overcoming Resistance to Tumor-Targeted and Immune-Targeted Therapies. Cancer Discov 2021; 11:874-899. [PMID: 33811122 DOI: 10.1158/2159-8290.cd-20-1638] [Citation(s) in RCA: 100] [Impact Index Per Article: 33.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/09/2020] [Revised: 01/13/2021] [Accepted: 02/01/2021] [Indexed: 11/16/2022]
Abstract
Resistance to anticancer therapies includes primary resistance, usually related to lack of target dependency or presence of additional targets, and secondary resistance, mostly driven by adaptation of the cancer cell to the selection pressure of treatment. Resistance to targeted therapy is frequently acquired, driven by on-target, bypass alterations, or cellular plasticity. Resistance to immunotherapy is often primary, orchestrated by sophisticated tumor-host-microenvironment interactions, but could also occur after initial efficacy, mostly when only partial responses are obtained. Here, we provide an overview of resistance to tumor and immune-targeted therapies and discuss challenges of overcoming resistance, and current and future directions of development. SIGNIFICANCE: A better and earlier identification of cancer-resistance mechanisms could avoid the use of ineffective drugs in patients not responding to therapy and provide the rationale for the administration of personalized drug associations. A clear description of the molecular interplayers is a prerequisite to the development of novel and dedicated anticancer drugs. Finally, the implementation of such cancer molecular and immunologic explorations in prospective clinical trials could de-risk the demonstration of more effective anticancer strategies in randomized registration trials, and bring us closer to the promise of cure.
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Affiliation(s)
- Mihaela Aldea
- Department of Medical Oncology, Gustave Roussy, Villejuif, France
| | - Fabrice Andre
- Department of Medical Oncology, Gustave Roussy, Villejuif, France.,INSERM U981, PRISM Institute, Gustave Roussy, Villejuif, France.,Paris Saclay University, Saint-Aubin, France
| | - Aurelien Marabelle
- INSERM U981, PRISM Institute, Gustave Roussy, Villejuif, France.,Drug Development Department, Gustave Roussy, Villejuif, France
| | - Semih Dogan
- INSERM U981, PRISM Institute, Gustave Roussy, Villejuif, France
| | - Fabrice Barlesi
- Department of Medical Oncology, Gustave Roussy, Villejuif, France.,Aix Marseille University, CNRS, INSERM, CRCM, Marseille, France
| | - Jean-Charles Soria
- Paris Saclay University, Saint-Aubin, France. .,Drug Development Department, Gustave Roussy, Villejuif, France
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29
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Neuwelt AJ, Kimball AK, Johnson AM, Arnold BW, Bullock BL, Kaspar RE, Kleczko EK, Kwak JW, Wu MH, Heasley LE, Doebele RC, Li HY, Nemenoff RA, Clambey ET. Cancer cell-intrinsic expression of MHC II in lung cancer cell lines is actively restricted by MEK/ERK signaling and epigenetic mechanisms. J Immunother Cancer 2021; 8:jitc-2019-000441. [PMID: 32312906 PMCID: PMC7204826 DOI: 10.1136/jitc-2019-000441] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 03/09/2020] [Indexed: 12/18/2022] Open
Abstract
BACKGROUND Programmed death 1/programmed death ligand 1 (PD-1/PD-L1) targeted immunotherapy affords clinical benefit in ~20% of unselected patients with lung cancer. The factor(s) that determine whether a tumor responds or fails to respond to immunotherapy remains an active area of investigation. We have previously defined divergent responsiveness of two KRAS-mutant cell lines to PD-1/PD-L1 blockade using an orthotopic, immunocompetent mouse model. Responsiveness to PD-1/PD-L1 checkpoint blockade correlates with an interferon gamma (IFNγ)-inducible gene signature and major histocompatibility complex class II (MHC II) expression by cancer cells. In the current study, we aim to identify therapeutic targets that can be manipulated in order to enhance cancer-cell-specific MHC II expression. METHODS Responsiveness to IFNγ and induction of MHC II expression was assessed after various treatment conditions in mouse and human non-small cell lung cancer (NSCLC) cell lines using mass cytometric and flow cytometric analysis. RESULTS Single-cell analysis using mass and flow cytometry demonstrated that IFNγ consistently induced PD-L1 and MHC class I (MHC I) across multiple murine and human NSCLC cell lines. In contrast, MHC II showed highly variable induction following IFNγ treatment both between lines and within lines. In mouse models of NSCLC, MHC II induction was inversely correlated with basal levels of phosphorylated extracellular signal-regulated kinase (ERK) 1/2, suggesting potential mitogen-activated protein (MAP) kinase-dependent antagonism of MHC II expression. To test this, cell lines were subjected to varying levels of stimulation with IFNγ, and assessed for MHC II expression in the presence or absence of mitogen-activated protein kinase kinase (MEK) inhibitors. IFNγ treatment in the presence of MEK inhibitors significantly enhanced MHC II induction across multiple lung cancer lines, with minimal impact on expression of either PD-L1 or MHC I. Inhibition of histone deacetylases (HDACs) also enhanced MHC II expression to a more modest extent. Combined MEK and HDAC inhibition led to greater MHC II expression than either treatment alone. CONCLUSIONS These studies emphasize the active inhibitory role that epigenetic and ERK signaling cascades have in restricting cancer cell-intrinsic MHC II expression in NSCLC, and suggest that combinatorial blockade of these pathways may engender new responsiveness to checkpoint therapies.
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Affiliation(s)
- Alexander J Neuwelt
- Medical Oncology, Hunter Holmes McGuire VA Medical Center, Richmond, Virginia, USA
| | - Abigail K Kimball
- Anesthesiology, University of Colorado Denver - Anschutz Medical Campus, Aurora, Colorado, USA
| | - Amber M Johnson
- Medicine, University of Colorado Denver - Anschutz Medical Campus, Aurora, Colorado, USA
| | - Benjamin W Arnold
- Medicine, University of Colorado Denver - Anschutz Medical Campus, Aurora, Colorado, USA
| | - Bonnie L Bullock
- Medicine, University of Colorado Denver - Anschutz Medical Campus, Aurora, Colorado, USA
| | - Rachael E Kaspar
- Medicine, University of Colorado Denver - Anschutz Medical Campus, Aurora, Colorado, USA
| | - Emily K Kleczko
- Medicine, University of Colorado Denver - Anschutz Medical Campus, Aurora, Colorado, USA
| | - Jeff W Kwak
- Medicine, University of Colorado Denver - Anschutz Medical Campus, Aurora, Colorado, USA
| | - Meng-Han Wu
- Medicine, University of Colorado Denver - Anschutz Medical Campus, Aurora, Colorado, USA
| | - Lynn E Heasley
- Craniofacial Biology, University of Colorado Denver - Anschutz Medical Campus, Aurora, Colorado, USA.,VA Eastern Colorado Health Care System, Denver, Colorado, USA
| | - Robert C Doebele
- Medicine, University of Colorado Denver - Anschutz Medical Campus, Aurora, Colorado, USA
| | - Howard Y Li
- Internal Medicine, Division of Pulmonary Disease and Critical Care Medicine, Virginia Commonwealth University, Richmond, Virginia, USA.,Medical Service, Pulmonary Section, Hunter Holmes McGuire VA Medical Center, Richmond, Virginia, USA
| | - Raphael A Nemenoff
- Medicine, University of Colorado Denver - Anschutz Medical Campus, Aurora, Colorado, USA
| | - Eric T Clambey
- Anesthesiology, University of Colorado Denver - Anschutz Medical Campus, Aurora, Colorado, USA
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30
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Fancelli S, Caliman E, Mazzoni F, Brugia M, Castiglione F, Voltolini L, Pillozzi S, Antonuzzo L. Chasing the Target: New Phenomena of Resistance to Novel Selective RET Inhibitors in Lung Cancer. Updated Evidence and Future Perspectives. Cancers (Basel) 2021; 13:cancers13051091. [PMID: 33806299 PMCID: PMC7961559 DOI: 10.3390/cancers13051091] [Citation(s) in RCA: 17] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/13/2021] [Revised: 02/13/2021] [Accepted: 02/26/2021] [Indexed: 12/11/2022] Open
Abstract
Simple Summary REarranged during Transfection (RET) is an emerging target for several types of cancer, including non-small cell lung cancer (NSCLC). The recent U.S. FDA approval of pralsetinib and selpercatinib raises issues regarding the emergence of secondary mutations and amplifications involved in parallel signaling pathways and receptors, liable for resistance mechanisms. The aim of this review is to explore recent knowledge on RET resistance in NSCLC in pre-clinic and in clinical settings and accordingly, the state-of-the-art in new drugs or combination of drugs development. Abstract The potent, RET-selective tyrosine kinase inhibitors (TKIs) pralsetinib and selpercatinib, are effective against the RET V804L/M gatekeeper mutants, however, adaptive mutations that cause resistance at the solvent front RET G810 residue have been found, pointing to the need for the development of the next-generation of RET-specific TKIs. Also, as seen in EGFR- and ALK-driven NSCLC, the rising of the co-occurring amplifications of KRAS and MET could represent other escaping mechanisms from direct inhibition. In this review, we summarize actual knowledge on RET fusions, focusing on those involved in NSCLC, the results of main clinical trials of approved RET-inhibition drugs, with particular attention on recent published results of selective TKIs, and finally, pre-clinical evidence regarding resistance mechanisms and suggestion on hypothetical and feasible drugs combinations and strategies viable in the near future.
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Affiliation(s)
- Sara Fancelli
- Medical Oncology Unit, Careggi University Hospital, 50134 Florence, Italy; (S.F.); (E.C.); (F.M.); (M.B.); (S.P.)
| | - Enrico Caliman
- Medical Oncology Unit, Careggi University Hospital, 50134 Florence, Italy; (S.F.); (E.C.); (F.M.); (M.B.); (S.P.)
- Department of Experimental and Clinical Medicine, University of Florence, 50134 Florence, Italy;
| | - Francesca Mazzoni
- Medical Oncology Unit, Careggi University Hospital, 50134 Florence, Italy; (S.F.); (E.C.); (F.M.); (M.B.); (S.P.)
| | - Marco Brugia
- Medical Oncology Unit, Careggi University Hospital, 50134 Florence, Italy; (S.F.); (E.C.); (F.M.); (M.B.); (S.P.)
| | - Francesca Castiglione
- Pathological Histology and Molecular Diagnostics Unit, Careggi University Hospital, 50134 Florence, Italy;
| | - Luca Voltolini
- Department of Experimental and Clinical Medicine, University of Florence, 50134 Florence, Italy;
- Thoraco-Pulmonary Surgery Unit, Careggi University Hospital, 50134 Florence, Italy
| | - Serena Pillozzi
- Medical Oncology Unit, Careggi University Hospital, 50134 Florence, Italy; (S.F.); (E.C.); (F.M.); (M.B.); (S.P.)
| | - Lorenzo Antonuzzo
- Medical Oncology Unit, Careggi University Hospital, 50134 Florence, Italy; (S.F.); (E.C.); (F.M.); (M.B.); (S.P.)
- Department of Experimental and Clinical Medicine, University of Florence, 50134 Florence, Italy;
- Correspondence: ; Tel.: +39-055-7948406
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31
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Subbiah V, Shen T, Terzyan SS, Liu X, Hu X, Patel KP, Hu M, Cabanillas M, Behrang A, Meric-Bernstam F, Vo PTT, Mooers BHM, Wu J. Structural basis of acquired resistance to selpercatinib and pralsetinib mediated by non-gatekeeper RET mutations. Ann Oncol 2021; 32:261-268. [PMID: 33161056 PMCID: PMC7883646 DOI: 10.1016/j.annonc.2020.10.599] [Citation(s) in RCA: 122] [Impact Index Per Article: 40.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/12/2020] [Revised: 10/28/2020] [Accepted: 10/29/2020] [Indexed: 12/13/2022] Open
Abstract
BACKGROUND Selpercatinib (LOXO-292) and pralsetinib (BLU-667) are highly potent RET-selective protein tyrosine kinase inhibitors (TKIs) for treating advanced RET-altered thyroid cancers and non-small-cell lung cancer (NSCLC). It is critical to analyze RET mutants resistant to these drugs and unravel the molecular basis to improve patient outcomes. PATIENTS AND METHODS Cell-free DNAs (cfDNAs) were analyzed in a RET-mutant medullary thyroid cancer (MTC) patient and a CCDC6-RET fusion NSCLC patient who had dramatic response to selpercatinib and later developed resistance. Selpercatinib-resistant RET mutants were identified and cross-profiled with pralsetinib in cell cultures. Crystal structures of RET-selpercatinib and RET-pralsetinib complexes were determined based on high-resolution diffraction data collected with synchrotron radiation. RESULTS RETG810C/S mutations at the solvent front and RETY806C/N mutation at the hinge region were found in cfDNAs of an MTC patient with RETM918T/V804M/L, who initially responded to selpercatinib and developed resistance. RETG810C mutant was detected in cfDNAs of a CCDC6-RET-fusion NSCLC patient who developed acquired resistance to selpercatinib. Five RET kinase domain mutations at three non-gatekeeper residues were identified from 39 selpercatinib-resistant cell lines. All five selpercatinib-resistant RET mutants were cross-resistant to pralsetinib. X-ray crystal structures of the RET-selpercatinib and RET-pralsetinib complexes reveal that, unlike other TKIs, these two RET TKIs anchor one end in the front cleft and wrap around the gate wall to access the back cleft. CONCLUSIONS RET mutations at the solvent front and the hinge are resistant to both drugs. Selpercatinib and pralsetinib use an unconventional mode to bind RET that avoids the interference from gatekeeper mutations but is vulnerable to non-gatekeeper mutations.
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Affiliation(s)
- V Subbiah
- Department of Investigational Cancer Therapeutics, Division of Cancer Medicine, the University of Texas MD Anderson Cancer Center, Houston, USA.
| | - T Shen
- Peggy and Charles Stephenson Cancer Center, Oklahoma City, USA; Department of Pathology, University of Oklahoma Health Sciences Center, Oklahoma City, USA
| | - S S Terzyan
- Department of Biochemistry and Molecular Biology, University of Oklahoma Health Sciences Center, Oklahoma City, USA; Laboratory of Biomolecular Structure and Function, University of Oklahoma Health Sciences Center, Oklahoma City, USA
| | - X Liu
- Peggy and Charles Stephenson Cancer Center, Oklahoma City, USA; Department of Pathology, University of Oklahoma Health Sciences Center, Oklahoma City, USA
| | - X Hu
- Peggy and Charles Stephenson Cancer Center, Oklahoma City, USA; Department of Pathology, University of Oklahoma Health Sciences Center, Oklahoma City, USA
| | - K P Patel
- Molecular Diagnostics Laboratory, Division of Diagnostic Imaging, the University of Texas MD Anderson Cancer Center, Houston, USA
| | - M Hu
- Endocrine and Neoplasia, Division of Diagnostic Imaging, the University of Texas MD Anderson Cancer Center, Houston, USA
| | - M Cabanillas
- Endocrine and Neoplasia, Division of Diagnostic Imaging, the University of Texas MD Anderson Cancer Center, Houston, USA
| | - A Behrang
- Musculoskeletal Imaging, Division of Diagnostic Imaging, the University of Texas MD Anderson Cancer Center, Houston, USA
| | - F Meric-Bernstam
- Department of Investigational Cancer Therapeutics, Division of Cancer Medicine, the University of Texas MD Anderson Cancer Center, Houston, USA
| | - P T T Vo
- Peggy and Charles Stephenson Cancer Center, Oklahoma City, USA
| | - B H M Mooers
- Peggy and Charles Stephenson Cancer Center, Oklahoma City, USA; Department of Biochemistry and Molecular Biology, University of Oklahoma Health Sciences Center, Oklahoma City, USA; Laboratory of Biomolecular Structure and Function, University of Oklahoma Health Sciences Center, Oklahoma City, USA.
| | - J Wu
- Peggy and Charles Stephenson Cancer Center, Oklahoma City, USA; Department of Pathology, University of Oklahoma Health Sciences Center, Oklahoma City, USA.
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32
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Abstract
Targeted therapy has become the standard of care for non-small cell lung cancers with a range of targetable alterations, including ALK and ROS1 kinase fusions. RET fusions drive the oncogenesis of 1-2% of NSCLCs and represent a substantial global burden of disease. Although these fusions were first identified more than thirty years ago, targeted therapy for RET fusion-positive lung cancers was only explored in the last decade. Whereas repurposed multikinase inhibitors were initially tested, selective inhibitors RET inhibitors have dramatically improved outcomes for patients whose tumors harbor these alterations. In 2020, the US Food and Drug Administration approved selpercatinib, a selective RET inhibitor, for adults with lung and thyroid cancers with RET rearrangements or mutations, making it the first targeted therapy to be approved for RET-altered cancers. While resistance to selective RET inhibition has been described, next-generation RET inhibitors are already being explored for patients who progress on prior RET kinase inhibitors.
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Affiliation(s)
| | - Alexander Drilon
- Memorial Sloan Kettering Cancer Center, New York, NY, USA.,Weill Cornell Medical College, New York, NY, USA
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33
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Lu C, Zhou Q. Diagnostics, therapeutics and RET inhibitor resistance for RET fusion-positive non-small cell lung cancers and future perspectives. Cancer Treat Rev 2021; 96:102153. [PMID: 33773204 DOI: 10.1016/j.ctrv.2021.102153] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/20/2020] [Revised: 12/08/2020] [Accepted: 01/02/2021] [Indexed: 12/17/2022]
Abstract
Selective RET inhibitors is the current hot topic, making multikinase inhibitors a thing of the past. However, the limitation of various test approaches, coupled with lack of knowledge of acquired resistance mechanisms, and specific patient groups that bear special consideration, remains a challenge. Herein, we outline utility of various diagnostic techniques, provide evidence to guide management of RET-fusion-positive Non-Small Cell Lung Cancer (NSCLC) patients, including specific patient groups, such as EGFR-mutant NSCLC patients who acquired RET fusions after resisting EGFR TKIs, and offer a compendium of mechanisms of acquired resistance to RET targeted therapies. This review further provides a list of ongoing clinical trials and summarizes perspectives to guide future development of drugs and trials for this population.
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Affiliation(s)
- Chang Lu
- Guangdong Lung Cancer Institute, Guangdong Provincial People's Hospital, and Guangdong Academy of Medical Sciences, Guangzhou, China; The Second School of Clinical Medicine, Southern Medical University, Guangzhou, China
| | - Qing Zhou
- Guangdong Lung Cancer Institute, Guangdong Provincial People's Hospital, and Guangdong Academy of Medical Sciences, Guangzhou, China; The Second School of Clinical Medicine, Southern Medical University, Guangzhou, China.
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34
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Takeuchi S, Yanagitani N, Seto T, Hattori Y, Ohashi K, Morise M, Matsumoto S, Yoh K, Goto K, Nishio M, Takahara S, Kawakami T, Imai Y, Yoshimura K, Tanimoto A, Nishiyama A, Murayama T, Yano S. Phase 1/2 study of alectinib in RET-rearranged previously-treated non-small cell lung cancer (ALL-RET). Transl Lung Cancer Res 2021; 10:314-325. [PMID: 33569315 PMCID: PMC7867784 DOI: 10.21037/tlcr-20-549] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
Background Rearranged during transfection (RET) rearrangements occur in 1–2% of non-small cell lung cancers (NSCLCs). Alectinib administered at doses of 300 mg and 600 mg twice daily (BID) is approved for ALK rearranged NSCLC in Japan and other countries, respectively. Since alectinib has activity against RET, we conducted a phase (P) 1/2 study of alectinib to determine its activity in Japanese patients with RET rearranged NSCLC. Methods This study was a single-arm, open-label, multi-institutional P1/2 trial. Previously treated patients with RET-rearranged NSCLC, screened by nation-wide network (LC-SCRUM-Japan), were recruited. In P1, alectinib (600 or 450 mg BID) was administered following a 3+3 design and its safety was assessed. During P2, alectinib was administered at the recommended dose (RD) determined in P1. The primary endpoint was the objective response rate (ORR) in RET inhibitor-naïve patients treated with the RD of alectinib. Results Thirty-four patients were administered alectinib. In cohort 1 (600 mg BID) of P1, we observed 5 dose-limiting toxicities (DLTs), including grade 3 rash and thromboembolic event, in 3 of 6 patients. In cohort 2 (450 mg BID), we observed no DLTs in 3 patients. Pharmacokinetic analysis revealed that AUC0–10 to 600 mg BID was higher than that previously reported in global trials. We determined 450 mg BID as the RD for P2. In 25 RET inhibitor-naïve patients, one achieved an objective response (4%) and 13 achieved disease control at 8 weeks (52%). The median progression-free survival (PFS) was 3.4 months (95% CI, 2.0–5.4), while the median overall survival was 19.0 months (5.4–NE). We observed grade 3 adverse events (AEs) (4%) including pneumonitis in P2. Conclusions Alectinib exerts limited activity against RET-rearranged NSCLC. Further investigation to elucidate the mechanisms underlying sensitivity and resistance of RET inhibitors is required to improve outcomes for these patients.
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Affiliation(s)
- Shinji Takeuchi
- Division of Medical Oncology, Cancer Research Institute, Kanazawa University, Kanazawa, Ishikawa, Japan.,Cancer Center, Kanazawa University Hospital, Kanazawa, Ishikawa, Japan
| | - Noriko Yanagitani
- Department of Thoracic Medical Oncology, The Cancer Institute Hospital of Japanese Foundation for Cancer Research, Koto-ku, Tokyo, Japan
| | - Takashi Seto
- Department of Thoracic Oncology, National Kyusyu Cancer Center, Minami-Ku, Fukuoka, Japan
| | - Yoshihiro Hattori
- Department of Thoracic Oncology, Hyogo Cancer Center, Akashi, Hyogo, Japan
| | - Kadoaki Ohashi
- Department of Respiratory Medicine and Allergy, Kita-ku, Okayama University Hospital, Okayama, Japan
| | - Masahiro Morise
- Department of Respiratory Medicine, Nagoya University Graduate School of Medicine, Nagoya, Aichi, Japan
| | - Shingo Matsumoto
- Department of Thoracic Oncology, National Cancer Center Hospital East, Kashiwa, Chiba, Japan
| | - Kiyotaka Yoh
- Department of Thoracic Oncology, National Cancer Center Hospital East, Kashiwa, Chiba, Japan
| | - Koichi Goto
- Department of Thoracic Oncology, National Cancer Center Hospital East, Kashiwa, Chiba, Japan
| | - Makoto Nishio
- Department of Thoracic Medical Oncology, The Cancer Institute Hospital of Japanese Foundation for Cancer Research, Koto-ku, Tokyo, Japan
| | - Shizuko Takahara
- Innovative Clinical Research Center (iCREK), Kanazawa University Hospital, Kanazawa, Ishikawa, Japan
| | - Takahiro Kawakami
- Innovative Clinical Research Center (iCREK), Kanazawa University Hospital, Kanazawa, Ishikawa, Japan
| | - Yasuhito Imai
- Innovative Clinical Research Center (iCREK), Kanazawa University Hospital, Kanazawa, Ishikawa, Japan
| | - Kenichi Yoshimura
- Innovative Clinical Research Center (iCREK), Kanazawa University Hospital, Kanazawa, Ishikawa, Japan.,Medical Center for Translational and Clinical Research, Hiroshima University Hospital, Hiroshima University, Minami, Hiroshima, Japan
| | - Azusa Tanimoto
- Division of Medical Oncology, Cancer Research Institute, Kanazawa University, Kanazawa, Ishikawa, Japan.,Cancer Center, Kanazawa University Hospital, Kanazawa, Ishikawa, Japan
| | - Akihiro Nishiyama
- Division of Medical Oncology, Cancer Research Institute, Kanazawa University, Kanazawa, Ishikawa, Japan.,Cancer Center, Kanazawa University Hospital, Kanazawa, Ishikawa, Japan
| | - Toshinori Murayama
- Innovative Clinical Research Center (iCREK), Kanazawa University Hospital, Kanazawa, Ishikawa, Japan
| | - Seiji Yano
- Division of Medical Oncology, Cancer Research Institute, Kanazawa University, Kanazawa, Ishikawa, Japan.,Cancer Center, Kanazawa University Hospital, Kanazawa, Ishikawa, Japan
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35
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Nokin MJ, Ambrogio C, Nadal E, Santamaria D. Targeting Infrequent Driver Alterations in Non-Small Cell Lung Cancer. Trends Cancer 2020; 7:410-429. [PMID: 33309239 DOI: 10.1016/j.trecan.2020.11.005] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/30/2020] [Revised: 11/12/2020] [Accepted: 11/12/2020] [Indexed: 02/08/2023]
Abstract
The discovery of oncogenic driver mutations led to the development of targeted therapies with non-small cell lung cancer (NSCLC) being a paradigm for precision medicine in this setting. Nowadays, the number of clinical trials focusing on targeted therapies for uncommon drivers is growing exponentially, emphasizing the medical need for these patients. Unfortunately, similar to what is observed with most targeted therapies directed against a driver oncogene, the clinical response is almost always temporary and acquired resistance to these drugs invariably emerges. Here, we review the biology of infrequent genomic actionable alterations in NSCLC as well as the current and emerging therapeutic options for these patients. Mechanisms leading to acquired drug resistance and future challenges in the field are also discussed.
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Affiliation(s)
- Marie-Julie Nokin
- University of Bordeaux, INSERM U1218, ACTION Laboratory, IECB, 33600 Pessac, France
| | - Chiara Ambrogio
- Department of Molecular Biotechnology and Health Sciences, Molecular Biotechnology Center, University of Torino, Torino, Italy; Department of Medical Oncology, Dana-Farber Cancer Institute, Boston, MA 02215, USA
| | - Ernest Nadal
- Department of Medical Oncology, Catalan Institute of Oncology, Clinical Research in Solid Tumors (CReST) Group, Oncobell Program, IDIBELL, L'Hospitalet, Barcelona, Spain.
| | - David Santamaria
- University of Bordeaux, INSERM U1218, ACTION Laboratory, IECB, 33600 Pessac, France.
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36
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Russo A, Cardona AF, Caglevic C, Manca P, Ruiz-Patiño A, Arrieta O, Rolfo C. Overcoming TKI resistance in fusion-driven NSCLC: new generation inhibitors and rationale for combination strategies. Transl Lung Cancer Res 2020; 9:2581-2598. [PMID: 33489820 PMCID: PMC7815353 DOI: 10.21037/tlcr-2019-cnsclc-06] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Abstract
During the last several years, multiple gene rearrangements with oncogenic potential have been described in NSCLC, identifying specific clinic-pathological subgroups of patients that benefit from a targeted therapeutic approach, including anaplastic lymphoma kinase (ALK), c-ros protooncogene 1 (ROS1) and, more recently, REarranged during Transfection (RET) and neurotrophic tyrosine receptor kinases (NTRK) genes. Despite initial impressive antitumor activity, the use of targeted therapies in oncogene-addicted NSCLC subgroups is invariably associated with the development of acquired resistance through multiple mechanisms that can include both on-target and off-target mechanisms. However, the process of acquired resistance is a rapidly evolving clinical scenario that constantly evolves under the selective pressure of tyrosine kinase inhibitors. The development of increasingly higher selective and potent inhibitors, traditionally used to overcome resistance to first generation inhibitors, is associated with the development of novel mechanisms of resistance that encompass complex resistance mutations, highly recalcitrant to available TKIs, and bypass track mechanisms. Herein, we provide a comprehensive overview on the therapeutic strategies for overcoming acquired resistance to tyrosine kinase inhibitors (TKIs) targeting the most well-established oncogenic gene fusions in advanced NSCLC, including ALK, ROS1, RET, and NTRK rearrangements.
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Affiliation(s)
| | - Andrés F Cardona
- Foundation for Clinical and Applied Cancer Research (FICMAC), Bogotá, Colombia.,Molecular Oncology and Biology Systems Research Group (FOX-G), Universidad el Bosque, Bogotá, Colombia.,Clinical and Translational Oncology Group, Institute of Oncology, Clínica del Country, Bogotá, Colombia
| | - Christian Caglevic
- Head of Cancer Research Department, Instituto Oncologico Fundacion Arturo Lopez Perez, Santiago, Chile
| | - Paolo Manca
- Fondazione IRCCS Istituto Nazionale dei Tumori, Milan, Italy
| | - Alejandro Ruiz-Patiño
- Foundation for Clinical and Applied Cancer Research (FICMAC), Bogotá, Colombia.,Molecular Oncology and Biology Systems Research Group (FOX-G), Universidad el Bosque, Bogotá, Colombia
| | - Oscar Arrieta
- Thoracic Oncology Unit, Instituto Nacional de Cancerología (INCan), México City, México
| | - Christian Rolfo
- Marlene and Stewart Greenebaum Comprehensive Cancer Center, University of Maryland School of Medicine, Baltimore, MD, USA
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37
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Chu YH, Wirth LJ, Farahani AA, Nosé V, Faquin WC, Dias-Santagata D, Sadow PM. Clinicopathologic features of kinase fusion-related thyroid carcinomas: an integrative analysis with molecular characterization. Mod Pathol 2020; 33:2458-2472. [PMID: 32737449 PMCID: PMC7688509 DOI: 10.1038/s41379-020-0638-5] [Citation(s) in RCA: 54] [Impact Index Per Article: 13.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/07/2020] [Revised: 07/16/2020] [Accepted: 07/16/2020] [Indexed: 01/16/2023]
Abstract
The discovery of actionable kinase gene rearrangements has revolutionized the therapeutic landscape of thyroid carcinomas. Unsolved challenges include histopathologic recognition of targetable cases, correlation between genotypes and tumor behavior, and evolving resistance mechanisms against kinase inhibitors (KI). We present 62 kinase fusion-positive thyroid carcinomas (KFTC), including 57 papillary thyroid carcinomas (PTC), two poorly differentiated thyroid carcinomas (PDTC), two undifferentiated thyroid carcinomas (ATC), and one primary secretory carcinoma (SC), in 57 adults and 5 adolescents. Clinical records, post-operative histology, and molecular profiles were reviewed. Histologically, all KFTC showed multinodular growth with prominent intratumoral fibrosis. Lymphovascular invasion (95%), extrathyroidal extension, gross and microscopic (63%), and cervical lymph node metastasis (79%) were common. Several kinase fusions were identified: STRN-ALK, EML4-ALK, AGK-BRAF, CUL1-BRAF, MKRN1-BRAF, SND1-BRAF, TTYH3-BRAF, EML4-MET, TFG-MET, IRF2BP2-NTRK1, PPL-NTRK1, SQSTM1-NTRK1, TPR-NTRK1, TPM3-NTRK1, EML4-NTRK3, ETV6-NTRK3, RBPMS-NTRK3, SQSTM1-NTRK3, CCDC6-RET, ERC1-RET, NCOA4-RET, RASAL2-RET, TRIM24-RET, TRIM27-RET, and CCDC30-ROS1. Individual cases also showed copy number variants of EGFR and nucleotide variants and indels in pTERT, TP53, PIK3R1, AKT2, TSC2, FBXW7, JAK2, MEN1, VHL, IDH1, PTCH1, GNA11, GNAQ, SMARCA4, and CDH1. In addition to thyroidectomy and radioactive iodine, ten patients received multi-kinase and/or selective kinase inhibitor therapy, with 6 durable, objective responses and four with progressive disease. Among 47 cases with >6 months of follow-up (median [range]: 41 [6-480] months), persistent/recurrent disease, distant metastasis and thyroid cancer-related death occurred in 57%, 38% and 6%, respectively. In summary, KFTC encompass a spectrum of molecularly diverse tumors with overlapping clinicopathologic features and a tendency for clinical aggressiveness. Characteristic histology with multinodular growth and prominent fibrosis, particularly when there is extensive lymphovascular spread, should trigger molecular testing for gene rearrangements, either in a step-wise manner by prevalence or using a combined panel. Further, our findings provide information on molecular therapy in radioiodine-refractory thyroid carcinomas.
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Affiliation(s)
- Ying-Hsia Chu
- Department of Pathology, Massachusetts General Hospital and Harvard Medical School, Boston, MA, 02114, United States of America
| | - Lori J. Wirth
- Department of Medicine, Massachusetts General Hospital and Harvard Medical School, Boston, MA, 02114, United States of America
| | - Alexander A. Farahani
- Department of Pathology, Massachusetts General Hospital and Harvard Medical School, Boston, MA, 02114, United States of America
| | - Vânia Nosé
- Department of Pathology, Massachusetts General Hospital and Harvard Medical School, Boston, MA, 02114, United States of America
| | - William C. Faquin
- Department of Pathology, Massachusetts General Hospital and Harvard Medical School, Boston, MA, 02114, United States of America
| | - Dora Dias-Santagata
- Department of Pathology, Massachusetts General Hospital and Harvard Medical School, Boston, MA, 02114, United States of America
| | - Peter M. Sadow
- Department of Pathology, Massachusetts General Hospital and Harvard Medical School, Boston, MA, 02114, United States of America
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38
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Abstract
Lung cancer is the leading cause of cancer mortality. It is classified into different histologic subtypes, including adenocarcinoma, squamous carcinoma, and large cell carcinoma (commonly referred as non-small cell lung cancer) and small cell lung cancer. Comprehensive molecular characterization of lung cancer has expanded our understanding of the cellular origins and molecular pathways affected in each of these subtypes. Many of these genetic alterations represent potential therapeutic targets for which drugs are constantly under development. This article discusses the molecular characteristics of the main lung cancer subtypes and discusses the current guidelines and novel targeted therapies, including checkpoint immunotherapy.
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Affiliation(s)
- Roberto Ruiz-Cordero
- Department of Pathology, University of California San Francisco, 1825 4th Street Room L2181A, San Francisco, CA 94158, USA.
| | - Walter Patrick Devine
- Department of Pathology, University of California San Francisco, 1600 Divisadero Street Room B-620, San Francisco, CA 94115, USA
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39
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Giustini NP, Jeong AR, Buturla J, Bazhenova L. Advances in Treatment of Locally Advanced or Metastatic Non-Small Cell Lung Cancer: Targeted Therapy. Clin Chest Med 2020; 41:223-235. [PMID: 32402358 DOI: 10.1016/j.ccm.2020.02.003] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
Abstract
The treatment of metastatic non-small cell lung cancer (NSCLC) is constantly evolving. Although the advent of immunotherapy has played an important role in the treatment of patients with NSCLC, the identification of driver mutations and the subsequent specific treatment of these targets often lead to durable responses while maintaining quality of life. This review delves into targeted therapies available for epidermal growth factor receptor, anaplastic lymphoma kinase, ROS1, neurotrophic tropomyosin receptor kinase, and BRAF- mutated NSCLC patients, as well as other mutations with promising novel drugs under clinical investigation.
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Affiliation(s)
- Nicholas P Giustini
- UCSD Moores Cancer Center, 3855 Health Sciences Drive MC #0987, La Jolla, CA 92093-0829, USA.
| | - Ah-Reum Jeong
- UCSD Moores Cancer Center, 3855 Health Sciences Drive MC #0987, La Jolla, CA 92093-0829, USA
| | - James Buturla
- UCSD Moores Cancer Center, 3855 Health Sciences Drive MC #0987, La Jolla, CA 92093-0829, USA
| | - Lyudmila Bazhenova
- UCSD Moores Cancer Center, 3855 Health Sciences Drive MC #0987, La Jolla, CA 92093-0829, USA
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40
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Tan L, Solomon BJ. Defining resistance mechanisms to selective RET tyrosine kinase inhibitors in RET fusion-positive non-small-cell lung cancer. Ann Oncol 2020; 31:1599-1600. [PMID: 33045324 DOI: 10.1016/j.annonc.2020.10.002] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/05/2020] [Accepted: 10/05/2020] [Indexed: 11/24/2022] Open
Affiliation(s)
- L Tan
- Department of Medical Oncology, Peter MacCallum Cancer Centre, Melbourne, VIC, Australia; Sir Peter MacCallum Department of Oncology, University of Melbourne, Parkville, VIC, Australia
| | - B J Solomon
- Department of Medical Oncology, Peter MacCallum Cancer Centre, Melbourne, VIC, Australia; Sir Peter MacCallum Department of Oncology, University of Melbourne, Parkville, VIC, Australia.
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41
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von Itzstein MS, Burke MC, Brekken RA, Aguilera TA, Zeh HJ, Beg MS. Targeting TAM to Tame Pancreatic Cancer. Target Oncol 2020; 15:579-588. [PMID: 32996059 DOI: 10.1007/s11523-020-00751-9] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
Pancreatic cancer is expected to become the second leading cause of cancer-related death within the next few years. Current therapeutic strategies have limited effectiveness and therefore there is an urgency to develop novel effective therapies. The receptor tyrosine kinase subfamily TAM (Tyro3, Axl, MerTK) is directly implicated in the pathogenesis of the metastatic, chemoresistant, and immunosuppressive phenotype in pancreatic cancer. TAM inhibitors are promising investigational therapies for pancreatic cancer due to their potential to target multiple aspects of pancreatic cancer biology. Specifically, recent mechanistic investigations and therapeutic combinations in the preclinical setting suggest that TAM inhibition with chemotherapy, targeted therapy, and immunotherapy should be evaluated clinically.
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Affiliation(s)
- Mitchell S von Itzstein
- Division of Hematology/Oncology, Department of Internal Medicine, UT Southwestern Medical Center, 5323 Harry Hines Boulevard, Dallas, TX, 75390-8852, USA
- Division of Hematology and Medical Oncology, University of Texas Southwestern Medical Center, Dallas, TX, USA
| | - Michael C Burke
- Division of Hematology/Oncology, Department of Internal Medicine, UT Southwestern Medical Center, 5323 Harry Hines Boulevard, Dallas, TX, 75390-8852, USA
- Division of Hematology and Medical Oncology, University of Texas Southwestern Medical Center, Dallas, TX, USA
| | - Rolf A Brekken
- Division of Surgical Oncology, University of Texas Southwestern Medical Center, Dallas, TX, USA
| | - Todd A Aguilera
- Department of Radiation Oncology, University of Texas Southwestern Medical Center, Dallas, TX, USA
| | - Herbert J Zeh
- Division of Surgical Oncology, University of Texas Southwestern Medical Center, Dallas, TX, USA
| | - Muhammad Shaalan Beg
- Division of Hematology/Oncology, Department of Internal Medicine, UT Southwestern Medical Center, 5323 Harry Hines Boulevard, Dallas, TX, 75390-8852, USA.
- Division of Hematology and Medical Oncology, University of Texas Southwestern Medical Center, Dallas, TX, USA.
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42
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Xing P, Yang N, Hu X, Mu Y, Wang S, Guo Y, Hao X, Hu X, Zhang X, Li J. The clinical significance of RET gene fusion among Chinese patients with lung cancer. Transl Cancer Res 2020; 9:6455-6463. [PMID: 35117253 PMCID: PMC8797800 DOI: 10.21037/tcr-20-754] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/29/2020] [Accepted: 07/27/2020] [Indexed: 11/30/2022]
Abstract
Background The incidence of lung cancer is growing fast in China, however, the prognosis remains dismal due to the limited therapeutic approaches. The “ret proto-oncogene mutation” (RET) fusions have been proven to be the driver gene in lung cancer development and the therapeutic target of several multi-target tyrosine kinase inhibitors. Methods We applied formalin-fixed, paraffin-embedded (FFPE) samples of 39 patients with non-small cell lung cancer (NSCLC) using the Lung Plasma panel covering 168 cancer-associated genes and performed capture-based targeted deep sequencing to identify the RET fusion partners and concurrent gene mutation with Miseq. The log-rank test was used to compare the survival difference of patients according to treatment strategies. Statistical analyses and graphs were performed using R language and GraphPad Prism. Results Most of the samples were advanced (stage IIIb and IV) lung adenocarcinomas (80.77%). KIF5B-RET fusions were identified in 52% of the samples and K15-E12 was the most common variant. 6 (15%) samples harbored concurrent TP53 mutation and 3 samples were positive with EGFR mutation including a mutation in exon 19. Of these patients included, ten received cabozantinib, two received anlotinib, and one received crizotinib. Two (20%; 0–45) samples achieved stable disease and two were progressed in the cabozantinib treated group. Median progression-free survival (PFS) was 4 months (95% CI: 3.2–4.8) and median overall survival (OS) was 25 months (95% CI: 1.5–48.5). Three (11.54%; 0–24) samples achieved partial response in patients without RET inhibitor treatment and 4 (15.38%; 2–29) were stable disease. The median PFS was 11 months (95% CI: 1.2–20.8). There was no significant difference in PFS and OS between groups with or without RET inhibitors treatment. Conclusion This study provided insight into the RET fusions patients treatment. The survival benefit of current RET inhibitors was limited. More precise and potent RET inhibitors should be developed in the near future.
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Affiliation(s)
- Puyuan Xing
- National Cancer Center/National Clinical Research Center for Cancer/Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
| | - Nong Yang
- Department of Medical Oncology, Lung Cancer and Gastrointestinal Unit, Hunan Cancer Hospital/The Affiliated Cancer Hospital of Xiangya School of Medicine, Central South University, Changsha, China
| | - Xue Hu
- Department of Biotherapy, Cancer Institute and Hospital, Tianjin Medical University, Tianjin, China.,National Clinical Research Center for Cancer, Tianjin, China
| | - Yuxin Mu
- National Cancer Center/National Clinical Research Center for Cancer/Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
| | - Shouzheng Wang
- National Cancer Center/National Clinical Research Center for Cancer/Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
| | - Yiying Guo
- National Cancer Center/National Clinical Research Center for Cancer/Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
| | - Xuezhi Hao
- National Cancer Center/National Clinical Research Center for Cancer/Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
| | - Xingsheng Hu
- National Cancer Center/National Clinical Research Center for Cancer/Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
| | - Xinwei Zhang
- Department of Biotherapy, Cancer Institute and Hospital, Tianjin Medical University, Tianjin, China.,National Clinical Research Center for Cancer, Tianjin, China
| | - Junling Li
- National Cancer Center/National Clinical Research Center for Cancer/Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
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43
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Suster DI, Mino-Kenudson M. Molecular Pathology of Primary Non-small Cell Lung Cancer. Arch Med Res 2020; 51:784-798. [PMID: 32873398 DOI: 10.1016/j.arcmed.2020.08.004] [Citation(s) in RCA: 45] [Impact Index Per Article: 11.3] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2020] [Accepted: 08/13/2020] [Indexed: 02/07/2023]
Abstract
Lung carcinoma is one of the most common human cancers and is estimated to have an incidence of approximately 2 million new cases per year worldwide with a 20% mortality rate. Lung cancer represents one of the leading causes of cancer related death in the world. Of all cancer types to affect the pulmonary system, non-small cell lung carcinoma comprises approximately 80-85% of all tumors. In the past few decades cytogenetic and advanced molecular techniques have helped define the genomic landscape of lung cancer, and in the process, revolutionized the clinical management and treatment of patients with advanced non-small cell lung cancer. The discovery of specific, recurrent genetic abnormalities has led to the development of targeted therapies that have extended the life expectancy of patients who develop carcinoma of the lungs. Patients are now routinely treated with targeted therapies based on identifiable molecular alterations or other predictive biomarkers which has led to a revolution in the field of pulmonary pathology and oncology. Numerous different testing modalities, with various strengths and limitations now exist which complicate diagnostic algorithms, however recently emerging consensus guidelines and recommendations have begun to standardize the way to approach diagnostic testing of lung carcinoma. Herein we provide an overview of the molecular genetic landscape of non-small cell lung carcinoma, with attention to those clinically relevant alterations which drive management, as well as review current recommendations for molecular testing.
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Affiliation(s)
- David Ilan Suster
- Department of Pathology, Rutgers University, New Jersey Medical School, Newark, NJ, USA
| | - Mari Mino-Kenudson
- Department of Pathology, Massachusetts General Hospital, Harvard Medical School, Boston, MA, USA.
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44
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Stinchcombe TE. Current management of RET rearranged non-small cell lung cancer. Ther Adv Med Oncol 2020; 12:1758835920928634. [PMID: 32782485 PMCID: PMC7385825 DOI: 10.1177/1758835920928634] [Citation(s) in RCA: 26] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/10/2019] [Accepted: 05/01/2020] [Indexed: 12/14/2022] Open
Abstract
The identification of oncogenic drivers, and the subsequent development of targeted therapies established biomarker-based care for metastatic non-small cell lung cancer (NSCLC). Biomarker testing is standard of care in NSCLC patients with adenocarcinoma because multiple targeted therapies are available. Rearranged during transfection (RET) rearrangements were identified as oncogenic drivers in NSCLC, and are more common among younger patients, adenocarcinoma histology, and patients with a history of never smoking. The prevalence is estimated to be 1–2% among patients with adenocarcinoma histology. The most common rearrangement is between intron 11 of the RET gene and intron 15 of the KIF5B gene, and the next most frequent rearrangement is with the CCDC6 gene. RET rearrangements lead to constitutive activation of the RET tyrosine kinase and increased cell proliferation, migration, and survival. Phase II studies investigated the activity of multi-targeted tyrosine kinase inhibitors in patients with NSCLC with a confirmed RET rearrangement. These agents have limited potency against RET, and activity against the epidermal growth factor receptor and vascular endothelial growth factor pathways. These agents revealed modest activity, and were poorly tolerated due to the off-target toxicities. These struggles contributed to the development of more potent and specific RET tyrosine kinase inhibitors. Preliminary results from early phase trials of selpercatinib (LOXO-292) and pralsetinib (BLU-667) revealed promising efficacy and improved tolerability. The availability of these agents will make routine testing for RET rearrangements a priority.
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45
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Subbiah V, Cote GJ. Advances in Targeting RET-Dependent Cancers. Cancer Discov 2020; 10:498-505. [PMID: 32094155 PMCID: PMC7125013 DOI: 10.1158/2159-8290.cd-19-1116] [Citation(s) in RCA: 82] [Impact Index Per Article: 20.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/18/2019] [Revised: 11/04/2019] [Accepted: 01/28/2020] [Indexed: 12/29/2022]
Abstract
RET alterations have been characterized as oncogenic drivers in multiple cancers. The clinical validation of highly selective RET inhibitors demonstrates the utility of specific targeting of aberrantly activated RET in patients with cancers such as medullary thyroid cancer or non-small cell lung cancer. The remarkable responses observed have opened the field of RET-targeted inhibitors. In this review, we seek to focus on the impact of therapeutic RET targeting in cancers. SIGNIFICANCE: Successful clinical translation of selective RET inhibitors is poised to alter the therapeutic landscape of altered cancers. Questions that clearly need to be addressed relate to the ability to maintain long-term inhibition of tumor cell growth, how to prepare for the potential mechanisms of acquired resistance, and the development of next-generation selective RET inhibitors.
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Affiliation(s)
- Vivek Subbiah
- Department of Investigational Cancer Therapeutics, Division of Cancer Medicine, The University of Texas MD Anderson Cancer Center, Houston, Texas.
- Division of Pediatrics, The University of Texas MD Anderson Cancer Center, Houston, Texas
- MD Anderson Cancer Network, Houston, Texas
| | - Gilbert J Cote
- Department of Endocrine Neoplasia and Hormonal Disorders, The University of Texas MD Anderson Cancer Center, Houston, Texas
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46
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Tee AE, Ciampa OC, Wong M, Fletcher JI, Kamili A, Chen J, Ho N, Sun Y, Carter DR, Cheung BB, Marshall GM, Liu PY, Liu T. Combination therapy with the CDK7 inhibitor and the tyrosine kinase inhibitor exerts synergistic anticancer effects against MYCN-amplified neuroblastoma. Int J Cancer 2020; 147:1928-1938. [PMID: 32086952 DOI: 10.1002/ijc.32936] [Citation(s) in RCA: 19] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/07/2019] [Revised: 10/28/2019] [Accepted: 11/26/2019] [Indexed: 12/31/2022]
Abstract
Patients with neuroblastoma due to MYCN oncogene amplification and consequent N-Myc oncoprotein overexpression have very poor prognosis. The cyclin-dependent kinase 7 (CDK7)/super-enhancer inhibitor THZ1 suppresses MYCN gene transcription, reduces neuroblastoma cell proliferation, but does not cause significant cell death. The protein kinase phosphatase 1 nuclear targeting subunit (PNUTS) has recently been shown to interact with c-Myc protein and suppresses c-Myc protein degradation. Here we screened the U.S. Food and Drug Administration-Approved Oncology Drugs Set V from the National Cancer Institute, and identified tyrosine kinase inhibitors (TKIs), including ponatinib and lapatinib, as the Approved Oncology Drugs exerting the best synergistic anticancer effects with THZ1 in MYCN-amplified neuroblastoma cells. Combination therapy with THZ1 and ponatinib or lapatinib synergistically induced neuroblastoma cell apoptosis, while having little effects in normal nonmalignant cells. Differential gene expression analysis identified PNUTS as one of the genes most synergistically reduced by the combination therapy. Reverse transcription polymerase chain reaction and immunoblot analyses confirmed that THZ1 and the TKIs synergistically downregulated PNUTS mRNA and protein expression and reduced N-Myc protein but not N-Myc mRNA expression. In addition, PNUTS knockdown resulted in decreased N-Myc protein but not mRNA expression and decreased MYCN-amplified neuroblastoma cell proliferation and survival. As CDK7 inhibitors are currently under clinical evaluation in patients, our data suggest the addition of the TKI ponatinib or lapatinib in CDK7 inhibitor clinical trials in patients.
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Affiliation(s)
- Andrew E Tee
- Children's Cancer Institute Australia for Medical Research, Randwick, New South Wales, Australia
| | - Olivia C Ciampa
- Children's Cancer Institute Australia for Medical Research, Randwick, New South Wales, Australia
| | - Matthew Wong
- Children's Cancer Institute Australia for Medical Research, Randwick, New South Wales, Australia
| | - Jamie I Fletcher
- Children's Cancer Institute Australia for Medical Research, Randwick, New South Wales, Australia
| | - Alvin Kamili
- Children's Cancer Institute Australia for Medical Research, Randwick, New South Wales, Australia
| | - Jingwei Chen
- Children's Cancer Institute Australia for Medical Research, Randwick, New South Wales, Australia
| | - Nicholas Ho
- Children's Cancer Institute Australia for Medical Research, Randwick, New South Wales, Australia
| | - Yuting Sun
- Children's Cancer Institute Australia for Medical Research, Randwick, New South Wales, Australia
| | - Daniel R Carter
- Children's Cancer Institute Australia for Medical Research, Randwick, New South Wales, Australia
| | - Belamy B Cheung
- Children's Cancer Institute Australia for Medical Research, Randwick, New South Wales, Australia.,School of Women's and Children's Health, UNSW Sydney, Randwick, New South Wales, Australia
| | - Glenn M Marshall
- Children's Cancer Institute Australia for Medical Research, Randwick, New South Wales, Australia.,Kids Cancer Centre, Sydney Children's Hospital, Randwick, New South Wales, Australia
| | - Pei Y Liu
- Children's Cancer Institute Australia for Medical Research, Randwick, New South Wales, Australia
| | - Tao Liu
- Children's Cancer Institute Australia for Medical Research, Randwick, New South Wales, Australia
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Subbiah V, Yang D, Velcheti V, Drilon A, Meric-Bernstam F. State-of-the-Art Strategies for Targeting RET-Dependent Cancers. J Clin Oncol 2020; 38:1209-1221. [PMID: 32083997 DOI: 10.1200/jco.19.02551] [Citation(s) in RCA: 146] [Impact Index Per Article: 36.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022] Open
Abstract
Activating receptor tyrosine kinase RET (rarranged during transfection) gene alterations have been identified as oncogenic in multiple malignancies. RET gene rearrangements retaining the kinase domain are oncogenic drivers in papillary thyroid cancer, non-small-cell lung cancer, and multiple other cancers. Activating RET mutations are associated with different phenotypes of multiple endocrine neoplasia type 2 as well as sporadic medullary thyroid cancer. RET is thus an attractive therapeutic target in patients with oncogenic RET alterations. Multikinase inhibitors with RET inhibitor activity, such as cabozantinib and vandetanib, have been explored in the clinic for tumors with activating RET gene alterations with modest clinical efficacy. As a result of the nonselective nature of these multikinase inhibitors, patients had off-target adverse effects, such as hypertension, rash, and diarrhea. This resulted in a narrow therapeutic index of these drugs, limiting ability to dose for clinically effective RET inhibition. In contrast, the recent discovery and clinical validation of highly potent selective RET inhibitors (pralsetinib, selpercatinib) demonstrating improved efficacy and a more favorable toxicity profile are poised to alter the landscape of RET-dependent cancers. These drugs appear to have broad activity across tumors with activating RET alterations. The mechanisms of resistance to these next-generation highly selective RET inhibitors is an area of active research. This review summarizes the current understanding of RET alterations and the state-of-the-art treatment strategies in RET-dependent cancers.
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Affiliation(s)
- Vivek Subbiah
- Department of Investigational Cancer Therapy, The University of Texas MD Anderson Cancer Center, Houston, TX.,Division of Pediatrics, The University of Texas MD Anderson Cancer Center, Houston, TX.,MD Anderson Cancer Network, Houston, TX
| | - Dong Yang
- Sheikh Khalifa Bin Zayed Al Nahyan Institute for Personalized Cancer Therapy, The University of Texas MD Anderson Cancer Center, Houston, TX
| | | | - Alexander Drilon
- Thoracic Oncology Service, Early Drug Development Service, Division of Solid Tumor Oncology, Department of Medicine, Memorial Sloan Kettering Cancer Center, New York, NY.,Department of Medicine, Weill Cornell Medical College, New York, NY
| | - Funda Meric-Bernstam
- Department of Investigational Cancer Therapy, The University of Texas MD Anderson Cancer Center, Houston, TX.,Sheikh Khalifa Bin Zayed Al Nahyan Institute for Personalized Cancer Therapy, The University of Texas MD Anderson Cancer Center, Houston, TX
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48
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Nong L, Zhang Z, Xiong Y, Zheng Y, Li X, Li D, He Q, Li T. Comparison of next-generation sequencing and immunohistochemistry analysis for targeted therapy-related genomic status in lung cancer patients. J Thorac Dis 2019; 11:4992-5003. [PMID: 32030215 DOI: 10.21037/jtd.2019.12.25] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
Background Some drugs that target molecular pathways are available for the targeted treatment of lung cancer. Multiple tests are needed to detect the status of the known molecular targets to determine whether the patients can respond to the drugs. An integrated platform for various gene alteration detection including both mutations and rearrangements is necessary for patients, especially those without enough tissue. Methods In our study, detections of EGFR mutations, ALK rearrangement, ROS1 rearrangement, and alterations of other nine important lung cancer-related genes were integrated into a single next-generation sequencing (NGS) platform. The NGS analysis was performed in 107 cases of non-small cell lung cancer (NSCLC). Meanwhile, hot spots such as EGFR L858R, EGFR E746-A750Del mutations and gene rearrangement of ALK and ROS1 were detected by immunohistochemical (IHC) staining. Results NGS could explore various gene mutations and gene rearrangements with a reduced experiment time and lower amounts of tumor tissues than multiple IHC staining experiments. NGS results were more informative and reliable than IHC staining for EGFR gene alterations, especially for the exon 19 region. NGS could also increase the positive rate of ALK rearrangement and decrease the false positive results of ROS1 rearrangements detected by IHC staining. Conclusions NGS is effective for confirmation the status of various important lung cancer-related gene alterations. Furthermore, NGS is necessary for the confirmation of the IHC results of ALK and ROS1 rearrangements.
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Affiliation(s)
- Lin Nong
- Department of Pathology, Peking University First Hospital, Beijing 100034, China
| | | | - Yan Xiong
- Department of Pathology, Peking University First Hospital, Beijing 100034, China
| | - Yalin Zheng
- Department of Pathology, Peking University First Hospital, Beijing 100034, China
| | - Xin Li
- Department of Pathology, Peking University First Hospital, Beijing 100034, China
| | - Dong Li
- Department of Pathology, Peking University First Hospital, Beijing 100034, China
| | - Qiye He
- Singlera Genomics Inc., Shanghai 201318, China
| | - Ting Li
- Department of Pathology, Peking University First Hospital, Beijing 100034, China
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49
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Li AY, McCusker MG, Russo A, Scilla KA, Gittens A, Arensmeyer K, Mehra R, Adamo V, Rolfo C. RET fusions in solid tumors. Cancer Treat Rev 2019; 81:101911. [PMID: 31715421 DOI: 10.1016/j.ctrv.2019.101911] [Citation(s) in RCA: 75] [Impact Index Per Article: 15.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/01/2019] [Revised: 10/20/2019] [Accepted: 10/21/2019] [Indexed: 12/14/2022]
Abstract
The RET proto-oncogene has been well-studied. RET is involved in many different physiological and developmental functions. When altered, RET mutations influence disease in a variety of organ systems from Hirschsprung's disease and multiple endocrine neoplasia 2 (MEN2) to papillary thyroid carcinoma (PTC) and non-small cell lung cancer (NSCLC). Changes in RET expression have been discovered in 30-70% of invasive breast cancers and 50-60% of pancreatic ductal adenocarcinomas in addition to colorectal adenocarcinoma, melanoma, small cell lung cancer, neuroblastoma, and small intestine neuroendocrine tumors. RET mutations have been associated with tumor proliferation, invasion, and migration. RET fusions or rearrangements are somatic juxtapositions of 5' sequences from other genes with 3' RET sequences encoding tyrosine kinase. RET rearrangements occur in approximately 2.5-73% of sporadic PTC and 1-3% of NSCLC patients. The most common RET fusions are CDCC6-RET and NCOA4-RET in PTC and KIF5B-RET in NSCLC. Tyrosine kinase inhibitors are drugs that target kinases such as RET in RET-driven (RET-mutation or RET-fusion-positive) disease. Multikinase inhibitors (MKI) target various kinases and other receptors. Several MKIs are FDA-approved for cancer therapy (sunitinib, sorafenib, vandetanib, cabozantinib, regorafenib, ponatinib, lenvatinib, alectinib) and non-oncologic disease (nintedanib). Selective RET inhibitor drugs LOXO-292 (selpercatinib) and BLU-667 (pralsetinib) are also undergoing phase I/II and I clinical trials, respectively, with preliminary results demonstrating partial response and low incidence of serious adverse events. RET fusions provide a viable therapeutic target for oncologic treatment, and further study is warranted into the prevalence and pathogenesis of RET fusions as well as development of current and new tyrosine kinase inhibitors.
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Affiliation(s)
- Andrew Y Li
- Department of Medicine, Division of General Internal Medicine, University of Maryland Medical Center, Baltimore, United States
| | - Michael G McCusker
- Marlene and Stewart Greenebaum Comprehensive Cancer Center, University of Maryland School of Medicine, Baltimore, MD, USA
| | - Alessandro Russo
- Marlene and Stewart Greenebaum Comprehensive Cancer Center, University of Maryland School of Medicine, Baltimore, MD, USA; Medical Oncology Unit, A.O. Papardo & Department of Human Pathology, University of Messina, Italy
| | - Katherine A Scilla
- Marlene and Stewart Greenebaum Comprehensive Cancer Center, University of Maryland School of Medicine, Baltimore, MD, USA
| | - Allison Gittens
- Marlene and Stewart Greenebaum Comprehensive Cancer Center, University of Maryland School of Medicine, Baltimore, MD, USA
| | - Katherine Arensmeyer
- Marlene and Stewart Greenebaum Comprehensive Cancer Center, University of Maryland School of Medicine, Baltimore, MD, USA
| | - Ranee Mehra
- Marlene and Stewart Greenebaum Comprehensive Cancer Center, University of Maryland School of Medicine, Baltimore, MD, USA
| | - Vincenzo Adamo
- Medical Oncology Unit, A.O. Papardo & Department of Human Pathology, University of Messina, Italy
| | - Christian Rolfo
- Marlene and Stewart Greenebaum Comprehensive Cancer Center, University of Maryland School of Medicine, Baltimore, MD, USA.
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Abstract
Recent approvals of TRK inhibitors have demonstrated the success of a tumor agnostic approach to oncogene-targeted therapy across cancers. Collective data from acquired resistance studies suggest that resistance mechanisms, which include both kinase domain mutations and bypass signaling via RTK-RAS-RAF-MAPK pathways, frequently recur regardless of tumor type, oncogene, and drug.
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