1
|
Slootbeek PHJ, Tolmeijer SH, Mehra N, Schalken JA. Therapeutic biomarkers in metastatic castration-resistant prostate cancer: does the state matter? Crit Rev Clin Lab Sci 2024; 61:178-204. [PMID: 37882463 DOI: 10.1080/10408363.2023.2266482] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/07/2023] [Accepted: 09/28/2023] [Indexed: 10/27/2023]
Abstract
The treatment of metastatic castration-resistant prostate cancer (mCRPC) has been fundamentally transformed by our greater understanding of its complex biological mechanisms and its entrance into the era of precision oncology. A broad aim is to use the extreme heterogeneity of mCRPC by matching already approved or new targeted therapies to the correct tumor genotype. To achieve this, tumor DNA must be obtained, sequenced, and correctly interpreted, with individual aberrations explored for their druggability, taking into account the hierarchy of driving molecular pathways. Although tumor tissue sequencing is the gold standard, tumor tissue can be challenging to obtain, and a biopsy from one metastatic site or primary tumor may not provide an accurate representation of the current genetic underpinning. Sequencing of circulating tumor DNA (ctDNA) might catalyze precision oncology in mCRPC, as it enables real-time observation of genomic changes in tumors and allows for monitoring of treatment response and identification of resistance mechanisms. Moreover, ctDNA can be used to identify mutations that may not be detected in solitary metastatic lesions and can provide a more in-depth understanding of inter- and intra-tumor heterogeneity. Finally, ctDNA abundance can serve as a prognostic biomarker in patients with mCRPC.The androgen receptor (AR)-axis is a well-established therapeutical target for prostate cancer, and through ctDNA sequencing, insights have been obtained in (temporal) resistance mechanisms that develop through castration resistance. New third-generation AR-axis inhibitors are being developed to overcome some of these resistance mechanisms. The druggability of defects in the DNA damage repair machinery has impacted the treatment landscape of mCRPC in recent years. For patients with deleterious gene aberrations in genes linked to homologous recombination, particularly BRCA1 or BRCA2, PARP inhibitors have shown efficacy compared to the standard of care armamentarium, but platinum-based chemotherapy may be equally effective. A hierarchy exists in genes associated with homologous recombination, where, besides the canonical genes in this pathway, not every other gene aberration predicts the same likelihood of response. Moreover, evidence is emerging on cross-resistance between therapies such as PARP inhibitors, platinum-based chemotherapy and even radioligand therapy that target this genotype. Mismatch repair-deficient patients can experience a beneficial response to immune checkpoint inhibitors. Activation of other cellular signaling pathways such as PI3K, cell cycle, and MAPK have shown limited success with monotherapy, but there is potential in co-targeting these pathways with combination therapy, either already witnessed or anticipated. This review outlines precision medicine in mCRPC, zooming in on the role of ctDNA, to identify genomic biomarkers that may be used to tailor molecularly targeted therapies. The most common druggable pathways and outcomes of therapies matched to these pathways are discussed.
Collapse
Affiliation(s)
- Peter H J Slootbeek
- Department of Medical Oncology, Radboud university medical center, Nijmegen, The Netherland
| | - Sofie H Tolmeijer
- Department of Medical Oncology, Radboud university medical center, Nijmegen, The Netherland
| | - Niven Mehra
- Department of Medical Oncology, Radboud university medical center, Nijmegen, The Netherland
| | - Jack A Schalken
- Department of Experimental Urology, Research Institute of Medical Innovation, Radboud university medical center, Nijmegen, The Netherlands
| |
Collapse
|
2
|
Plas S, Pircher A, Heidegger I. Pembrolizumab in mCRPC - Combination therapies as breakthrough to success? Curr Opin Urol 2023; 33:458-471. [PMID: 37603022 DOI: 10.1097/mou.0000000000001121] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 08/22/2023]
Abstract
PURPOSE OF REVIEW Immune checkpoint inhibitors (ICIs) have shown promising antitumor activity in various malignant diseases. This narrative review provides an update on ongoing clinical studies investigating the only FDA-approved ICI programmed death receptor 1 (PD-1) inhibitor pembrolizumab in mono- and combination therapy in patients with metastatic castration-resistant prostate cancer (mCRPC). RECENT FINDINGS Although most clinical trials investigating pembrolizumab as mono- or combinational therapy did not meet their primary endpoints, there exist subgroups of patients that demonstrate impressive responses rates justifying further investigation of ICI in prostate cancer. Beside combination of pembrolizumab with approved mCRPC agents, innovative approaches, like combining pembrolizumab with radioligands, deoxyribonucleic acid vaccines or innovative immunotherapeutic agents (i.e., ONC-392, AMG160, BXCL701) are ongoing exerting promising preliminary findings. SUMMARY ICI monotherapy seems to be effective in a small biomarker-preselected population, however, there is evidence that especially novel ICI combination approaches can improve patient survival, which could ultimately refocus and revolutionize the treatment of mCRPC.
Collapse
Affiliation(s)
- Stefan Plas
- Medical University of Innsbruck, Department of Urology
| | - Andreas Pircher
- Medical University of Innsbruck, Department of Internal Medicine V, Hematology and Oncology Innsbruck, Austria
| | | |
Collapse
|
3
|
Yu EY, Kolinsky MP, Berry WR, Retz M, Mourey L, Piulats JM, Appleman LJ, Romano E, Gravis G, Gurney H, Bögemann M, Emmenegger U, Joshua AM, Linch M, Sridhar S, Conter HJ, Laguerre B, Massard C, Li XT, Schloss C, Poehlein CH, de Bono JS. Pembrolizumab Plus Docetaxel and Prednisone in Patients with Metastatic Castration-resistant Prostate Cancer: Long-term Results from the Phase 1b/2 KEYNOTE-365 Cohort B Study. Eur Urol 2022; 82:22-30. [PMID: 35397952 DOI: 10.1016/j.eururo.2022.02.023] [Citation(s) in RCA: 33] [Impact Index Per Article: 16.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/14/2021] [Revised: 01/21/2022] [Accepted: 02/22/2022] [Indexed: 12/15/2022]
Abstract
BACKGROUND Patients with metastatic castration-resistant prostate cancer (mCRPC) frequently receive docetaxel after they develop resistance to abiraterone or enzalutamide and need more efficacious treatments. OBJECTIVE To evaluate the efficacy and safety of pembrolizumab plus docetaxel and prednisone in patients with mCRPC. DESIGN, SETTING, AND PARTICIPANTS The trial included patients with mCRPC in the phase 1b/2 KEYNOTE-365 cohort B study who were chemotherapy naïve and who experienced failure of or were intolerant to ≥4 wk of abiraterone or enzalutamide for mCRPC with progressive disease within 6 mo of screening. INTERVENTION Pembrolizumab 200 mg intravenously (IV) every 3 wk (Q3W), docetaxel 75 mg/m2 IV Q3W, and prednisone 5 mg orally twice daily. OUTCOME MEASUREMENTS AND STATISTICAL ANALYSIS The primary endpoints were safety, the prostate-specific antigen (PSA) response rate, and the objective response rate (ORR) according to Response Evaluation Criteria in Solid Tumors version 1.1 (RECIST v1.1) by blinded independent central review (BICR). Secondary endpoints included time to PSA progression; the disease control rate (DCR) and duration of response (DOR) according to RECIST v1.1 by BICR; ORR, DCR, DOR, and radiographic progression-free survival (rPFS) according to Prostate Cancer Working Group 3-modified RECIST v1.1 by BICR; and overall survival (OS). RESULTS AND LIMITATIONS Among 104 treated patients, 52 had measurable disease. The median time from allocation to data cutoff (July 9, 2020) was 32.4 mo, during which 101 patients discontinued treatment, 81 (78%) for disease progression. The confirmed PSA response rate was 34% and the confirmed ORR (RECIST v1.1) was 23%. Median rPFS and OS were 8.5 mo and 20.2 mo, respectively. Treatment-related adverse events (TRAEs) occurred in 100 patients (96%). Grade 3-5 TRAEs occurred in 46 patients (44%). Seven AE-related deaths (6.7%) occurred (2 due to treatment-related pneumonitis). Limitations of the study include the single-arm design and small sample size. CONCLUSIONS Pembrolizumab plus docetaxel and prednisone demonstrated antitumor activity in chemotherapy-naïve patients with mCRPC treated with abiraterone or enzalutamide for mCRPC. Safety was consistent with profiles for the individual agents. Further investigation is warranted. PATIENT SUMMARY We evaluated the efficacy and safety of the anti-PD-1 antibody pembrolizumab combined with the chemotherapy drug docetaxel and the steroid prednisone for patients with metastatic prostate cancer resistant to androgen deprivation therapy , and who never received chemotherapy. The combination showed antitumor activity and manageable safety in this patient population. This trial is registered on ClinicalTrials.gov as NCT02861573.
Collapse
Affiliation(s)
- Evan Y Yu
- Department of Medicine, Division of Oncology, University of Washington and Fred Hutchinson Cancer Research Center, G4-830, Seattle, WA, USA.
| | | | - William R Berry
- Department of Medical Oncology, Duke Cancer Center Cary, Cary, NC, USA
| | - Margitta Retz
- Department of Urology, Rechts der Isar Medical Center, Technical University of Munich, Munich, Germany
| | - Loic Mourey
- Department of Medical Oncology, Institut Universitaire du Cancer de Toulouse - Oncopole, Toulouse, France
| | - Josep M Piulats
- Department of Medical Oncology, Catalan Institute of Oncology, Barcelona, Spain
| | - Leonard J Appleman
- Department of Hematology/Oncology, Department of Medicine, University of Pittsburgh, Pittsburgh, PA, USA
| | - Emanuela Romano
- Department of Medical Oncology, Center for Cancer Immunotherapy, Institut Curie, Paris, France
| | - Gwenaelle Gravis
- Department of Medical Oncology, Institut Paoli Calmettes, Aix-Marseille Université, Marseille, France
| | - Howard Gurney
- Department of Medical Oncology, Macquarie University, Sydney, NSW, Australia
| | - Martin Bögemann
- Department of Urology, University Hospital Münster, Münster, Germany
| | - Urban Emmenegger
- Division of Medical Oncology, Odette Cancer Centre and Sunnybrook Research Institute, Toronto, ON, Canada
| | - Anthony M Joshua
- Department of Medical Oncology, Kinghorn Cancer Centre, St Vincent's Hospital, Sydney, NSW, Australia
| | - Mark Linch
- Department of Oncology, University College London Hospital and UCL Cancer Institute, London, UK
| | - Srikala Sridhar
- Cancer Clinical Research Unit, UHN Princess Margaret Cancer Centre, Toronto, ON, Canada
| | - Henry J Conter
- Department of Medical Oncology, University of Western Ontario, Brampton, ON, Canada
| | - Brigitte Laguerre
- Department of Medical Oncology, Centre Eugene Marquis, Rennes, France
| | - Christophe Massard
- Department of Drug Development, Gustave Roussy Cancer Campus and Université Paris-Sud, Villejuif, France; Department of Medical Oncology, Gustave Roussy Cancer Campus and Université Paris-Sud, Villejuif, France
| | - Xin Tong Li
- Department of Medical Oncology, Merck & Co., Inc., Kenilworth, NJ, USA
| | - Charles Schloss
- Department of Medical Oncology, Merck & Co., Inc., Kenilworth, NJ, USA
| | | | - Johann S de Bono
- Division of Clinical Studies, The Royal Marsden Hospital and The Institute of Cancer Research, London, UK
| |
Collapse
|
4
|
Yuen KC, Tran B, Anton A, Hamidi H, Costello AJ, Corcoran NM, Lawrentschuk N, Rainey N, Semira MCG, Gibbs P, Mariathasan S, Sandhu S, Kadel EE. Molecular classification of hormone-sensitive and castration-resistant prostate cancer, using nonnegative matrix factorization molecular subtyping of primary and metastatic specimens. Prostate 2022; 82:993-1002. [PMID: 35435276 PMCID: PMC9321082 DOI: 10.1002/pros.24346] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/23/2021] [Revised: 02/12/2022] [Accepted: 03/14/2022] [Indexed: 11/12/2022]
Abstract
BACKGROUND Despite the rapidly evolving therapeutic landscape, immunotherapy has demonstrated limited activity in prostate cancer. A greater understanding of the molecular landscape, particularly the expression of immune-related pathways, will inform future immunotherapeutic strategies. Consensus nonnegative matrix factorization (cNMF) is a novel model of molecular classification analyzing gene expression data, focusing on biological interpretation of metagenes and selecting meaningful clusters. OBJECTIVE We aimed to identify molecular subtypes of prostate cancer using cNMF and correlate these with existing biomarkers to inform future immunotherapeutic strategies. METHODS A cohort of archival tumor specimens from hormone-sensitive and castration-resistant disease was studied. Whole transcriptomic profiles were generated using TruSeq RNA Access technology and subjected to cNMF. Comprehensive genomic profiling was performed with the FoundationOne assay. NMF subtypes were characterized by gene expression pathways, genomic alterations and correlated with clinical data, then applied to The Cancer Genome Atlas data set. RESULTS We studied 164 specimens, including 52 castration-resistant and 13 paired primary/metastatic specimens. cNMF identified four distinct subtypes. NMF1 (19%) is enriched for immune-related and stromal-related pathways with transforming growth factor β (TGFβ) signature. NMF2 (36%) is associated with FOXO-mediated transcription signature and AKT signaling, NMF3 (26%) is enriched for ribosomal RNA processing, while NMF4 (19%) is enriched for cell cycle and DNA-repair pathways. The most common gene alterations included TMPRSS22 (42%), TP53 (23%), and DNA-repair genes (19%), occurring across all subtypes. NMF4 is significantly enriched for MYC and Wnt-signaling gene alterations. TMB, CD8 density, and PD-L1 expression were low overall. NMF1 and NMF4 were NMF2 was associated with superior overall survival. CONCLUSIONS Using cNMF, we identified four molecularly distinct subtypes which may inform treatment selection. NMF1 demonstrates the most inflammatory signature with asuppressive TGFβ signature, suggesting potential benefit with immunotherapy combination strategies targeting TGFβ and PD-(L)1. Prospective studies are required to evaluate the use of this novel model to molecularly stratify patients for optimal treatment selection.
Collapse
Affiliation(s)
- Kobe C. Yuen
- Department of Oncology Biomarker DevelopmentGenentech, Inc.South San FranciscoCaliforniaUSA
| | - Ben Tran
- Sir Peter MacCallum Department of OncologyThe University of MelbourneMelbourneVictoriaAustralia
- Walter and Eliza Hall Institute of Medical ResearchMelbourneVictoriaAustralia
| | - Angelyn Anton
- Walter and Eliza Hall Institute of Medical ResearchMelbourneVictoriaAustralia
- Eastern HealthMelbourneVictoriaAustralia
| | - Habib Hamidi
- Department of Oncology Biomarker DevelopmentGenentech, Inc.South San FranciscoCaliforniaUSA
| | - Anthony J. Costello
- Royal Melbourne HospitalMelbourneVictoriaAustralia
- Department of SurgeryThe University of MelbourneMelbourneVictoriaAustralia
- Australian Prostate CentreNorth MelbourneVictoriaAustralia
| | - Niall M. Corcoran
- Royal Melbourne HospitalMelbourneVictoriaAustralia
- Department of SurgeryThe University of MelbourneMelbourneVictoriaAustralia
| | - Nathan Lawrentschuk
- Walter and Eliza Hall Institute of Medical ResearchMelbourneVictoriaAustralia
- Royal Melbourne HospitalMelbourneVictoriaAustralia
- Department of SurgeryThe University of MelbourneMelbourneVictoriaAustralia
| | - Natalie Rainey
- Walter and Eliza Hall Institute of Medical ResearchMelbourneVictoriaAustralia
| | - Marie C. G. Semira
- Walter and Eliza Hall Institute of Medical ResearchMelbourneVictoriaAustralia
| | - Peter Gibbs
- Walter and Eliza Hall Institute of Medical ResearchMelbourneVictoriaAustralia
| | - Sanjeev Mariathasan
- Department of Oncology Biomarker DevelopmentGenentech, Inc.South San FranciscoCaliforniaUSA
| | - Shahneen Sandhu
- Sir Peter MacCallum Department of OncologyThe University of MelbourneMelbourneVictoriaAustralia
| | - Edward E. Kadel
- Department of Oncology Biomarker DevelopmentGenentech, Inc.South San FranciscoCaliforniaUSA
| |
Collapse
|
5
|
Characterization of a Pyroptosis-Related Signature for Prognosis Prediction and Immune Microenvironment Infiltration in Prostate Cancer. COMPUTATIONAL AND MATHEMATICAL METHODS IN MEDICINE 2022; 2022:8233840. [PMID: 35516457 PMCID: PMC9066377 DOI: 10.1155/2022/8233840] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/28/2021] [Accepted: 03/28/2022] [Indexed: 12/22/2022]
Abstract
This study was aimed at constructing a pyroptosis-related signature for prostate cancer (PCa) and elucidating the prognosis and immune landscape and the sensitivity of immune checkpoint blockade (ICB) therapy in signature-define subgroups of PCa. We identified 22 differentially expressed pyroptosis-related genes in PCa from The Cancer Genome Atlas (TCGA) database. The pyroptosis-related genes could divide PCa patients into two clusters with differences in survival. Seven genes were determined to construct a signature that was confirmed by qRT-PCR to be closely associated with the biological characteristics of malignant PCa. The signature could effectively and independently predict the biochemical recurrence (BCR) of PCa, which was validated in the GSE116918 and GSE21034. We found that patients in the high-risk group were more prone to BCR and closely associated with high-grade and advanced-stage disease progression. Outperforming clinical characteristics and nine published articles, our signature demonstrated excellent predictive performance. The patients in the low-risk group were strongly related to the high infiltration of various immune cells including CD8+ T cells and plasma B cells. Furthermore, the high-risk group with higher TMB levels and expression of immune checkpoints was more likely to benefit from immune checkpoint therapy such as PD-1 and CTLA-4 inhibitors. The sensitivity to chemotherapy, endocrine, and targeted therapy showed significant differences in the two risk groups. Our signature was a novel therapeutic strategy to distinguish the prognosis and guide treatment strategies.
Collapse
|
6
|
Slootbeek PHJ, Kloots ISH, Smits M, van Oort IM, Gerritsen WR, Schalken JA, Ligtenberg MJL, Grünberg K, Kroeze LI, Bloemendal HJ, Mehra N. Impact of molecular tumour board discussion on targeted therapy allocation in advanced prostate cancer. Br J Cancer 2022; 126:907-916. [PMID: 34912074 PMCID: PMC8927341 DOI: 10.1038/s41416-021-01663-9] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/24/2021] [Revised: 11/16/2021] [Accepted: 12/01/2021] [Indexed: 12/02/2022] Open
Abstract
BACKGROUND Molecular tumour boards (MTB) optimally match oncological therapies to patients with genetic aberrations. Prostate cancer (PCa) is underrepresented in these MTB discussions. This study describes the impact of routine genetic profiling and MTB referral on the outcome of PCa patients in a tertiary referral centre. METHODS All PCa patients that received next-generation sequencing results and/or were discussed at an MTB between Jan 1, 2017 and Jan 1, 2020 were included. Genetically matched therapies (GMT) in clinical trials or compassionate use were linked to actionable alterations. Response to these agents was retrospectively evaluated. RESULTS Out of the 277 genetically profiled PCa patients, 215 (78%) were discussed in at least one MTB meeting. A GMT was recommended to 102 patients (47%), of which 63 patients (62%) initiated the GMT. The most recommended therapies were PARP inhibitors (n = 74), programmed death-(ligand) 1 inhibitors (n = 21) and tyrosine kinase inhibitors (n = 19). Once started, 41.3% had a PFS of ≥6 months, 43.5% a PSA decline ≥50% and 38.5% an objective radiographic response. CONCLUSION Recommendation for a GMT is achieved in almost half of the patients with advanced prostate cancer, with GMT initiation leading to durable responses in over 40% of patients. These data justify routine referral of selected PCa patients to MTB's.
Collapse
Affiliation(s)
- Peter H J Slootbeek
- Radboud University Medical Centre, Radboud Institute for Health Sciences, Department of Medical Oncology, Nijmegen, The Netherlands
- Radboud University Medical Centre, Radboud institute for Molecular Life sciences, Department of Experimental Urology, Nijmegen, The Netherlands
| | - Iris S H Kloots
- Radboud University Medical Centre, Radboud Institute for Health Sciences, Department of Medical Oncology, Nijmegen, The Netherlands
| | - Minke Smits
- Radboud University Medical Centre, Radboud Institute for Health Sciences, Department of Medical Oncology, Nijmegen, The Netherlands
| | - Inge M van Oort
- Radboud University Medical Centre, Radboud Institute for Health Sciences, Department of Urology, Nijmegen, The Netherlands
| | - Winald R Gerritsen
- Radboud University Medical Centre, Radboud Institute for Health Sciences, Department of Medical Oncology, Nijmegen, The Netherlands
| | - Jack A Schalken
- Radboud University Medical Centre, Radboud institute for Molecular Life sciences, Department of Experimental Urology, Nijmegen, The Netherlands
| | - Marjolijn J L Ligtenberg
- Radboud University Medical Centre, Radboud Institute for Molecular Life sciences, Department of Pathology, Nijmegen, The Netherlands
- Radboud University Medical Centre, Radboud Institute for Molecular Life sciences, Department of Human Genetics, Nijmegen, The Netherlands
| | - Katrien Grünberg
- Radboud University Medical Centre, Radboud Institute for Molecular Life sciences, Department of Pathology, Nijmegen, The Netherlands
| | - Leonie I Kroeze
- Radboud University Medical Centre, Radboud Institute for Molecular Life sciences, Department of Pathology, Nijmegen, The Netherlands
| | - Haiko J Bloemendal
- Radboud University Medical Centre, Radboud Institute for Health Sciences, Department of Medical Oncology, Nijmegen, The Netherlands
| | - Niven Mehra
- Radboud University Medical Centre, Radboud Institute for Health Sciences, Department of Medical Oncology, Nijmegen, The Netherlands.
| |
Collapse
|
7
|
Abstract
PURPOSE OF REVIEW Despite significant progress, patients with metastatic prostate cancer continue to have poor prognosis. Immunotherapy has revolutionized cancer care for many tumor types but has a limited role in the treatment of prostate cancer. This review discusses the promise of immunotherapy in prostate cancer treatment with an emphasis on emerging therapeutic targets. RECENT FINDINGS Most prostate tumors have low tumor mutational burden and lack immunogenicity, representing significant hurdles to induction of anti-tumor immunity. However, recent research centered on deciphering key mechanisms of immune resistance in the prostate tumor microenvironment has led to the discovery of a range of new treatment targets. These discoveries are currently being translated into innovative immunotherapy clinical trials for patients with prostate cancer. Recent progress includes early evidence of activity for these novel approaches and the identification of potential predictive biomarkers of response. Novel treatment strategies using new antigen-directed therapies, drugs targeting the immunosuppressive tumor microenvironment, and combination immunotherapy therapies show great potential and are currently in clinical development. In addition, a deeper understanding of predictors of response and resistance to immunotherapy in prostate cancer is allowing for a more personalized approach to therapy.
Collapse
|
8
|
Khaki AR. Loose Regulatory Standards Portend a New Era of Imprecision Oncology. Cancer Invest 2021; 39:120-123. [PMID: 33290099 PMCID: PMC7875517 DOI: 10.1080/07357907.2020.1851705] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/24/2020] [Revised: 11/09/2020] [Accepted: 11/12/2020] [Indexed: 10/22/2022]
Abstract
Precision oncology has revolutionized the therapeutic landscape of oncology and is a goal for cancer drug development. However, lenient drug approvals by the United States Food and Drug Administration under the auspices of precision oncology are setting up this therapeutic approach to fail. In this commentary, I review two recent FDA drug approvals (pembrolizumab for tumor mutation burden-high solid tumors and olaparib for castration-resistant prostate cancer with deleterious homologous recombination repair mutations) where the FDA indication is broader than the studied population. I explain how these broad approvals stray from principles of precision oncology and can cause harm to patients.
Collapse
Affiliation(s)
- Ali Raza Khaki
- Division of Medical Oncology, Department of Medicine, University of Washington School of Medicine, Seattle, WA, USA
| |
Collapse
|
9
|
Rathi N, McFarland TR, Nussenzveig R, Agarwal N, Swami U. Evolving Role of Immunotherapy in Metastatic Castration Refractory Prostate Cancer. Drugs 2020; 81:191-206. [PMID: 33369720 PMCID: PMC7932934 DOI: 10.1007/s40265-020-01456-z] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
Abstract
Immunotherapies have shown remarkable success in the treatment of multiple cancer types; however, despite encouraging preclinical activity, registration trials of immunotherapy in prostate cancer have largely been unsuccessful. Sipuleucel-T remains the only approved immunotherapy for the treatment of asymptomatic or minimally symptomatic metastatic castrate-resistant prostate cancer based on modest improvement in overall survival. This immune evasion in the case of prostate cancer has been attributed to tumor-intrinsic factors, an immunosuppressive tumor microenvironment, and host factors, which ultimately make it an inert 'cold' tumor. Recently, multiple approaches have been investigated to turn prostate cancer into a 'hot' tumor. Antibodies directed against programmed cell death protein 1 have a tumor agnostic approval for a small minority of patients with microsatellite instability-high or mismatch repair-deficient metastatic prostate cancer. Herein, we present an overview of the current immunotherapy landscape in metastatic castration-resistant prostate cancer with a focus on immune checkpoint inhibitors. We describe the results of clinical trials of immune checkpoint inhibitors in patients with metastatic castration-resistant prostate cancer; either as single agents or in combination with other checkpoint inhibitors, poly (ADP-ribose) polymerase (PARP) inhibitors, tyrosine kinase inhibitors, novel hormonal therapies, chemotherapies, and radioligands. Finally, we review upcoming immunotherapies, including novel monoclonal antibodies, chimeric-antigen receptor (CAR) T cells, Bi-Specific T cell Engagers (BiTEs), therapies targeting the adenosine pathway, and other miscellaneous agents.
Collapse
Affiliation(s)
- Nityam Rathi
- Division of Oncology, Department of Internal Medicine, Huntsman Cancer Institute, University of Utah, 2000 Circle of Hope Drive Suite 5726, Salt Lake City, UT, 84112, USA
| | - Taylor Ryan McFarland
- Division of Oncology, Department of Internal Medicine, Huntsman Cancer Institute, University of Utah, 2000 Circle of Hope Drive Suite 5726, Salt Lake City, UT, 84112, USA
| | - Roberto Nussenzveig
- Division of Oncology, Department of Internal Medicine, Huntsman Cancer Institute, University of Utah, 2000 Circle of Hope Drive Suite 5726, Salt Lake City, UT, 84112, USA
| | - Neeraj Agarwal
- Division of Oncology, Department of Internal Medicine, Huntsman Cancer Institute, University of Utah, 2000 Circle of Hope Drive Suite 5726, Salt Lake City, UT, 84112, USA
| | - Umang Swami
- Division of Oncology, Department of Internal Medicine, Huntsman Cancer Institute, University of Utah, 2000 Circle of Hope Drive Suite 5726, Salt Lake City, UT, 84112, USA.
| |
Collapse
|
10
|
Immunotherapy in Prostate Cancer. Cancers (Basel) 2020; 12:cancers12071752. [PMID: 32630247 PMCID: PMC7409298 DOI: 10.3390/cancers12071752] [Citation(s) in RCA: 51] [Impact Index Per Article: 12.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/02/2020] [Revised: 06/24/2020] [Accepted: 06/28/2020] [Indexed: 01/03/2023] Open
Abstract
Immunotherapy encompasses a wide range of therapies to engage the immune system to target malignancies. In recent years, immunotherapy has made a major impact on treatment of metastatic cancer and has altered standard of care for many tumor types. However, predicting and understanding responses across tumor types has been challenging. While some metastatic cancers have shown dramatic responses to immunotherapy, such as melanoma, lung cancer, and renal cell carcinoma, prostate cancer has generally failed to show a significant response. However, small series of prostate cancer patients have shown impressive responses to cellular and immunotherapy. This review summarizes the current data for immunotherapy’s use in prostate cancer, as well as how currently available data might help predict patient responses to immunotherapy. Specifically, we will review vaccine-based therapies, immune checkpoint inhibitors, and future directions that are actively being explored.
Collapse
|