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Ntzifa A, Marras T, Georgoulias V, Lianidou E. Liquid biopsy for the management of NSCLC patients under osimertinib treatment. Crit Rev Clin Lab Sci 2024:1-23. [PMID: 38305080 DOI: 10.1080/10408363.2024.2302116] [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: 05/24/2023] [Accepted: 01/02/2024] [Indexed: 02/03/2024]
Abstract
Therapeutic management of NSCLC patients is quite challenging as they are mainly diagnosed at a late stage of disease, and they present a high heterogeneous molecular profile. Osimertinib changed the paradigm shift in treatment of EGFR mutant NSCLC patients achieving significantly better clinical outcomes. To date, osimertinib is successfully administered not only as first- or second-line treatment, but also as adjuvant treatment while its efficacy is currently investigated during neoadjuvant treatment or in stage III, unresectable EGFR mutant NSCLC patients. However, resistance to osimertinib may occur due to clonal evolution, under the pressure of the targeted therapy. The utilization of liquid biopsy as a minimally invasive tool provides insight into molecular heterogeneity of tumor clonal evolution and potent resistance mechanisms which may help to develop more suitable therapeutic approaches. Longitudinal monitoring of NSCLC patients through ctDNA or CTC analysis could reveal valuable information about clinical outcomes during osimertinib treatment. Therefore, several guidelines suggest that liquid biopsy in addition to tissue biopsy should be considered as a standard of care in the advanced NSCLC setting. This practice could significantly increase the number of NSCLC patients that will eventually benefit from targeted therapies, such as EGFR TKIs.
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Affiliation(s)
- Aliki Ntzifa
- Analysis of Circulating Tumor Cells Lab, Lab of Analytical Chemistry, Department of Chemistry, National and Kapodistrian University of Athens, Athens, Greece
| | - Theodoros Marras
- Analysis of Circulating Tumor Cells Lab, Lab of Analytical Chemistry, Department of Chemistry, National and Kapodistrian University of Athens, Athens, Greece
| | - Vasilis Georgoulias
- First Department of Medical Oncology, Metropolitan General Hospital of Athens, Cholargos, Greece
| | - Evi Lianidou
- Analysis of Circulating Tumor Cells Lab, Lab of Analytical Chemistry, Department of Chemistry, National and Kapodistrian University of Athens, Athens, Greece
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Akli A, Girard N, Fallet V, Rousseau-Bussac G, Gounant V, Friard S, Trédaniel J, Dujon C, Wislez M, Duchemann B, Giroux-Leprieur E. Histomolecular Resistance Mechanisms to First-Line Osimertinib in EGFR-Mutated Advanced Non-Small Cell Lung Cancer: A Multicentric Retrospective French Study. Target Oncol 2022; 17:675-682. [PMID: 36129569 DOI: 10.1007/s11523-022-00915-9] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 08/26/2022] [Indexed: 11/24/2022]
Abstract
BACKGROUND Osimertinib is an epidermal growth factor receptor (EGFR) tyrosine kinase inhibitor (TKI) used in first line for the treatment of advanced EGFR-mutated non-small cell lung cancer (NSCLC). OBJECTIVE The identification of related histomolecular resistance mechanisms to first-line osimertinib is a critical step to define the optimal treatment strategy beyond progression. PATIENTS AND METHODS All consecutive patients treated in the first line with osimertinib for advanced EGFR-mutated NSCLC at 10 hospitals in the Greater Paris area between April 2015 and January 2021 were included. Histomolecular data from plasma and tissue samples taken at progression under osimertinib were collected, and all samples were analyzed using DNA next-generation sequencing. Data on objective response rate (ORR), overall survival (OS), progression-free survival (PFS), and time to treatment discontinuation (TTD) were also collected. RESULTS Overall, 104 patients were included. Most patients had adenocarcinoma (n = 102, 98%) with an exon 19 EGFR deletion (n = 54, 52%). Forty-two patients (50%) had central nervous system (CNS) metastasis at the time of osimertinib initiation. ORR was 76%, median PFS and OS were 12.6 months and 52 months, respectively, and TTD was 33 months. At the time of analysis, 44 patients (42%) had tumor progression, and among these patients, 27 (61%) contributive samples were available. The most frequent molecular alterations at progression were mesenchymal epithelial transition factor (MET) amplification (15%; n = 4) and EGFR C797S mutation (11%; n = 3). Histological transformation was found in one patient (4%). RNA next-generation sequencing was performed in eight patients and showed a CCDC6-RET fusion in one patient (12%). CONCLUSIONS We confirmed the efficacy of osimertinib in patients with advanced EGFR mutation-positive NSCLC. At progression, the most frequent histomolecular alterations were MET amplification and EGFR C797S mutation.
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Affiliation(s)
- Assya Akli
- Department of Respiratory Diseases and Thoracic Oncology, APHP-Hopital Ambroise Pare, Paris-Saclay University, UVSQ, 9 avenue Charles de Gaulle, 92100, Boulogne-Billancourt, France
| | - Nicolas Girard
- Institute Curie, Thorax Institute, Paris-Saclay University, UVSQ, Paris, France
| | - Vincent Fallet
- Department of Pneumology and Thoracic Oncology, APHP-Hopital Tenon, Sorbonne University, Paris, France
| | | | - Valérie Gounant
- Thoracic Oncology Department, Paris-Cité University, APHP-Hopital Bichat, Paris, France
| | - Sylvie Friard
- Pneumology Department, Foch Hospital, Suresnes, France
| | - Jean Trédaniel
- Pneumology Department, Saint-Joseph Hospital, Paris, France
| | - Cécile Dujon
- Pneumology Department, André Mignot Hospital, Le Chesnay, France
| | - Marie Wislez
- Department of Pulmonology, Thoracic Oncology Unit, APHP-Hopital Cochin, Paris-Cité University, Paris, France
| | - Boris Duchemann
- Department of Medical Oncology, APHP-Hopital Avicenne, Sorbonne Paris Nord University, Bobigny, France
| | - Etienne Giroux-Leprieur
- Department of Respiratory Diseases and Thoracic Oncology, APHP-Hopital Ambroise Pare, Paris-Saclay University, UVSQ, 9 avenue Charles de Gaulle, 92100, Boulogne-Billancourt, France.
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Vasseur D, Sassi H, Bayle A, Tagliamento M, Besse B, Marzac C, Arbab A, Auger N, Cotteret S, Aldea M, Blanc-Durand F, Géraud A, Gazzah A, Loriot Y, Hollebecque A, Martín-Romano P, Ngo-Camus M, Nicotra C, Ponce S, Sakkal M, Caron O, Smolenschi C, Micol JB, Italiano A, Rouleau E, Lacroix L. Next-Generation Sequencing on Circulating Tumor DNA in Advanced Solid Cancer: Swiss Army Knife for the Molecular Tumor Board? A Review of the Literature Focused on FDA Approved Test. Cells 2022; 11:cells11121901. [PMID: 35741030 PMCID: PMC9221453 DOI: 10.3390/cells11121901] [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: 04/28/2022] [Revised: 06/01/2022] [Accepted: 06/10/2022] [Indexed: 11/16/2022] Open
Abstract
FDA-approved next-generation sequencing assays based on cell-free DNA offers new opportunities in a molecular-tumor-board context thanks to the noninvasiveness of liquid biopsy, the diversity of analyzed parameters and the short turnaround time. It gives the opportunity to study the heterogeneity of the tumor, to elucidate complex resistance mechanisms and to adapt treatment strategies. However, lowering the limit of detection and increasing the panels' size raise new questions in terms of detection of incidental germline alterations, occult malignancies and clonal hematopoiesis of indeterminate potential mutations. In this review, after a technological discussion and description of the common problematics encountered, we establish recommendations in properly using these FDA-approved tests in a molecular-tumor-board context.
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Affiliation(s)
- Damien Vasseur
- Medical Biology and Pathology Department, Gustave Roussy, F-94805 Villejuif, France; (H.S.); (C.M.); (A.A.); (N.A.); (S.C.); (E.R.); (L.L.)
- AMMICa UAR3655/US23, Gustave Roussy, F-94805 Villejuif, France
- Correspondence:
| | - Hela Sassi
- Medical Biology and Pathology Department, Gustave Roussy, F-94805 Villejuif, France; (H.S.); (C.M.); (A.A.); (N.A.); (S.C.); (E.R.); (L.L.)
| | - Arnaud Bayle
- Drug Development Department (DITEP), Gustave Roussy, F-94805 Villejuif, France; (A.B.); (A.G.); (P.M.-R.); (M.N.-C.); (C.N.); (S.P.); (A.I.)
- Oncostat U1018, Inserm, Université Paris-Saclay, Équipe Labellisée Ligue Contre le Cancer, F-94805 Villejuif, France
| | - Marco Tagliamento
- Medical Oncology Department, Gustave Roussy, F-94805 Villejuif, France; (M.T.); (B.B.); (M.A.); (A.G.); (Y.L.); (A.H.); (O.C.)
| | - Benjamin Besse
- Medical Oncology Department, Gustave Roussy, F-94805 Villejuif, France; (M.T.); (B.B.); (M.A.); (A.G.); (Y.L.); (A.H.); (O.C.)
| | - Christophe Marzac
- Medical Biology and Pathology Department, Gustave Roussy, F-94805 Villejuif, France; (H.S.); (C.M.); (A.A.); (N.A.); (S.C.); (E.R.); (L.L.)
| | - Ahmadreza Arbab
- Medical Biology and Pathology Department, Gustave Roussy, F-94805 Villejuif, France; (H.S.); (C.M.); (A.A.); (N.A.); (S.C.); (E.R.); (L.L.)
| | - Nathalie Auger
- Medical Biology and Pathology Department, Gustave Roussy, F-94805 Villejuif, France; (H.S.); (C.M.); (A.A.); (N.A.); (S.C.); (E.R.); (L.L.)
| | - Sophie Cotteret
- Medical Biology and Pathology Department, Gustave Roussy, F-94805 Villejuif, France; (H.S.); (C.M.); (A.A.); (N.A.); (S.C.); (E.R.); (L.L.)
| | - Mihaela Aldea
- Medical Oncology Department, Gustave Roussy, F-94805 Villejuif, France; (M.T.); (B.B.); (M.A.); (A.G.); (Y.L.); (A.H.); (O.C.)
| | - Félix Blanc-Durand
- Gynecological Cancer Unit, Department of Medicine, Gustave Roussy, F-94805 Villejuif, France;
| | - Arthur Géraud
- Drug Development Department (DITEP), Gustave Roussy, F-94805 Villejuif, France; (A.B.); (A.G.); (P.M.-R.); (M.N.-C.); (C.N.); (S.P.); (A.I.)
| | - Anas Gazzah
- Medical Oncology Department, Gustave Roussy, F-94805 Villejuif, France; (M.T.); (B.B.); (M.A.); (A.G.); (Y.L.); (A.H.); (O.C.)
| | - Yohann Loriot
- Medical Oncology Department, Gustave Roussy, F-94805 Villejuif, France; (M.T.); (B.B.); (M.A.); (A.G.); (Y.L.); (A.H.); (O.C.)
| | - Antoine Hollebecque
- Medical Oncology Department, Gustave Roussy, F-94805 Villejuif, France; (M.T.); (B.B.); (M.A.); (A.G.); (Y.L.); (A.H.); (O.C.)
| | - Patricia Martín-Romano
- Drug Development Department (DITEP), Gustave Roussy, F-94805 Villejuif, France; (A.B.); (A.G.); (P.M.-R.); (M.N.-C.); (C.N.); (S.P.); (A.I.)
| | - Maud Ngo-Camus
- Drug Development Department (DITEP), Gustave Roussy, F-94805 Villejuif, France; (A.B.); (A.G.); (P.M.-R.); (M.N.-C.); (C.N.); (S.P.); (A.I.)
| | - Claudio Nicotra
- Drug Development Department (DITEP), Gustave Roussy, F-94805 Villejuif, France; (A.B.); (A.G.); (P.M.-R.); (M.N.-C.); (C.N.); (S.P.); (A.I.)
| | - Santiago Ponce
- Drug Development Department (DITEP), Gustave Roussy, F-94805 Villejuif, France; (A.B.); (A.G.); (P.M.-R.); (M.N.-C.); (C.N.); (S.P.); (A.I.)
| | - Madona Sakkal
- Dermatology Unit, Oncology Department, Gustave Roussy, F-94805 Villejuif, France; (M.S.); (C.S.)
| | - Olivier Caron
- Medical Oncology Department, Gustave Roussy, F-94805 Villejuif, France; (M.T.); (B.B.); (M.A.); (A.G.); (Y.L.); (A.H.); (O.C.)
| | - Cristina Smolenschi
- Dermatology Unit, Oncology Department, Gustave Roussy, F-94805 Villejuif, France; (M.S.); (C.S.)
| | | | - Antoine Italiano
- Drug Development Department (DITEP), Gustave Roussy, F-94805 Villejuif, France; (A.B.); (A.G.); (P.M.-R.); (M.N.-C.); (C.N.); (S.P.); (A.I.)
| | - Etienne Rouleau
- Medical Biology and Pathology Department, Gustave Roussy, F-94805 Villejuif, France; (H.S.); (C.M.); (A.A.); (N.A.); (S.C.); (E.R.); (L.L.)
- AMMICa UAR3655/US23, Gustave Roussy, F-94805 Villejuif, France
| | - Ludovic Lacroix
- Medical Biology and Pathology Department, Gustave Roussy, F-94805 Villejuif, France; (H.S.); (C.M.); (A.A.); (N.A.); (S.C.); (E.R.); (L.L.)
- AMMICa UAR3655/US23, Gustave Roussy, F-94805 Villejuif, France
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Chen J, Facchinetti F, Braye F, Yurchenko A, Bigot L, Ponce S, Planchard D, Gazzah A, Nikolaev S, Michiels S, Vasseur D, Lacroix L, Tselikas L, Nobre C, Olaussen K, Andre F, Scoazec J, Barlesi F, Soria J, Loriot Y, Besse B, Friboulet L. Single cell DNA-seq depicts clonal evolution of multiple driver alterations in osimertinib resistant patients. Ann Oncol 2022; 33:434-444. [DOI: 10.1016/j.annonc.2022.01.004] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/23/2021] [Revised: 12/07/2021] [Accepted: 01/11/2022] [Indexed: 12/14/2022] Open
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Sudhesh Dev S, Zainal Abidin SA, Farghadani R, Othman I, Naidu R. Receptor Tyrosine Kinases and Their Signaling Pathways as Therapeutic Targets of Curcumin in Cancer. Front Pharmacol 2021; 12:772510. [PMID: 34867402 PMCID: PMC8634471 DOI: 10.3389/fphar.2021.772510] [Citation(s) in RCA: 36] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/08/2021] [Accepted: 11/01/2021] [Indexed: 12/20/2022] Open
Abstract
Receptor tyrosine kinases (RTKs) are transmembrane cell-surface proteins that act as signal transducers. They regulate essential cellular processes like proliferation, apoptosis, differentiation and metabolism. RTK alteration occurs in a broad spectrum of cancers, emphasising its crucial role in cancer progression and as a suitable therapeutic target. The use of small molecule RTK inhibitors however, has been crippled by the emergence of resistance, highlighting the need for a pleiotropic anti-cancer agent that can replace or be used in combination with existing pharmacological agents to enhance treatment efficacy. Curcumin is an attractive therapeutic agent mainly due to its potent anti-cancer effects, extensive range of targets and minimal toxicity. Out of the numerous documented targets of curcumin, RTKs appear to be one of the main nodes of curcumin-mediated inhibition. Many studies have found that curcumin influences RTK activation and their downstream signaling pathways resulting in increased apoptosis, decreased proliferation and decreased migration in cancer both in vitro and in vivo. This review focused on how curcumin exhibits anti-cancer effects through inhibition of RTKs and downstream signaling pathways like the MAPK, PI3K/Akt, JAK/STAT, and NF-κB pathways. Combination studies of curcumin and RTK inhibitors were also analysed with emphasis on their common molecular targets.
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Affiliation(s)
- Sareshma Sudhesh Dev
- Jeffrey Cheah School of Medicine and Health Sciences, Monash University Malaysia, Jalan Lagoon Selatan, Bandar Sunway, Malaysia
| | - Syafiq Asnawi Zainal Abidin
- Jeffrey Cheah School of Medicine and Health Sciences, Monash University Malaysia, Jalan Lagoon Selatan, Bandar Sunway, Malaysia
| | - Reyhaneh Farghadani
- Jeffrey Cheah School of Medicine and Health Sciences, Monash University Malaysia, Jalan Lagoon Selatan, Bandar Sunway, Malaysia
| | - Iekhsan Othman
- Jeffrey Cheah School of Medicine and Health Sciences, Monash University Malaysia, Jalan Lagoon Selatan, Bandar Sunway, Malaysia
| | - Rakesh Naidu
- Jeffrey Cheah School of Medicine and Health Sciences, Monash University Malaysia, Jalan Lagoon Selatan, Bandar Sunway, Malaysia
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Karlsen EA, Kahler S, Tefay J, Joseph SR, Simpson F. Epidermal Growth Factor Receptor Expression and Resistance Patterns to Targeted Therapy in Non-Small Cell Lung Cancer: A Review. Cells 2021; 10:1206. [PMID: 34069119 PMCID: PMC8156654 DOI: 10.3390/cells10051206] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/19/2021] [Revised: 04/29/2021] [Accepted: 05/06/2021] [Indexed: 12/21/2022] Open
Abstract
Globally, lung cancer is the leading cause of cancer-related death. The majority of non-small cell lung cancer (NSCLC) tumours express epidermal growth factor receptor (EGFR), which allows for precise and targeted therapy in these patients. The dysregulation of EGFR in solid epithelial cancers has two distinct mechanisms: either a kinase-activating mutation in EGFR (EGFR-mutant) and/or an overexpression of wild-type EGFR (wt-EGFR). The underlying mechanism of EGFR dysregulation influences the efficacy of anti-EGFR therapy as well as the nature of resistance patterns and secondary mutations. This review will critically analyse the mechanisms of EGFR expression in NSCLC, its relevance to currently approved targeted treatment options, and the complex nature of secondary mutations and intrinsic and acquired resistance patterns in NSCLC.
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Affiliation(s)
- Emma-Anne Karlsen
- Simpson Laboratory, The University of Queensland Diamantina Institute, Woolloongabba, Brisbane 4102, Australia; (S.R.J.); (F.S.)
- Department of General Surgery, Mater Hospital Brisbane, South Brisbane 4101, Australia
- Faculty of Medicine, The University of Queensland, St Lucia 4067, Australia; (S.K.); (J.T.)
| | - Sam Kahler
- Faculty of Medicine, The University of Queensland, St Lucia 4067, Australia; (S.K.); (J.T.)
| | - Joan Tefay
- Faculty of Medicine, The University of Queensland, St Lucia 4067, Australia; (S.K.); (J.T.)
- Department of General Surgery, Redland Hospital, Cleveland 4163, Australia
| | - Shannon R. Joseph
- Simpson Laboratory, The University of Queensland Diamantina Institute, Woolloongabba, Brisbane 4102, Australia; (S.R.J.); (F.S.)
| | - Fiona Simpson
- Simpson Laboratory, The University of Queensland Diamantina Institute, Woolloongabba, Brisbane 4102, Australia; (S.R.J.); (F.S.)
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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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Feasibility and first reports of the MATCH-R repeated biopsy trial at Gustave Roussy. NPJ Precis Oncol 2020; 4:27. [PMID: 32964129 PMCID: PMC7478969 DOI: 10.1038/s41698-020-00130-7] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2019] [Accepted: 07/24/2020] [Indexed: 12/17/2022] Open
Abstract
Unravelling the biological processes driving tumour resistance is necessary to support the development of innovative treatment strategies. We report the design and feasibility of the MATCH-R prospective trial led by Gustave Roussy with the primary objective of characterizing the molecular mechanisms of resistance to cancer treatments. The primary clinical endpoints consist of analyzing the type and frequency of molecular alterations in resistant tumours and compare these to samples prior to treatment. Patients experiencing disease progression after an initial partial response or stable disease for at least 24 weeks underwent a tumour biopsy guided by CT or ultrasound. Molecular profiling of tumours was performed using whole exome sequencing, RNA sequencing and panel sequencing. At data cut-off for feasibility analysis, out of 333 inclusions, tumour biopsies were obtained in 303 cases (91%). From these biopsies, 278 (83%) had sufficient quality for analysis by high-throughput next generation sequencing (NGS). All 278 samples underwent targeted NGS, 215 (70.9%) RNA sequencing and 222 (73.2%) whole exome sequencing. In total, 163 tumours were implanted in NOD scid gamma (NSG) or nude mice and 54 patient-derived xenograft (PDX) models were established, with a success rate of 33%. Adverse events secondary to invasive tumour sampling occurred in 24 patients (7.6%). Study recruitment is still ongoing. Systematic molecular profiling of tumours and the development of patient-derived models of acquired resistance to targeted agents and immunotherapy is feasible and can drive the selection of the next therapeutic strategy.
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