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Tumor Genomic Testing for >4,000 Men with Metastatic Castration-resistant Prostate Cancer in the Phase III Trial PROfound (Olaparib)

Other Titles
 Tumor Genomic Testing for >4,000 Men with Metastatic Castration-resistant Prostate Cancer in the Phase III Trial PROfound (Olaparib) 
Authors
 Maha Hussain  ;  Claire Corcoran  ;  Caroline Sibilla  ;  Karim Fizazi  ;  Fred Saad  ;  Neal Shore  ;  Shahneen Sandhu  ;  Joaquin Mateo  ;  David Olmos  ;  Niven Mehra  ;  Michael P Kolinsky  ;  Guilhem Roubaud  ;  Mustafa Özgüroǧlu  ;  Nobuaki Matsubara  ;  Craig Gedye  ;  Young Deuk Choi  ;  Charles Padua  ;  Alexander Kohlmann  ;  Robert Huisden  ;  Julia A Elvin  ;  Jinyu Kang  ;  Carrie A Adelman  ;  Allison Allen  ;  Christian Poehlein  ;  Johann de Bono 
Citation
 CLINICAL CANCER RESEARCH, Vol.28(8) : 1518-1530, 2022-04 
Journal Title
CLINICAL CANCER RESEARCH
ISSN
 1078-0432 
Issue Date
2022-04
MeSH
Genetic Testing ; Humans ; Male ; Phthalazines / therapeutic use ; Piperazines / therapeutic use ; Prostatic Neoplasms, Castration-Resistant* / drug therapy ; Prostatic Neoplasms, Castration-Resistant* / genetics ; Prostatic Neoplasms, Castration-Resistant* / pathology
Abstract
Purpose: Successful implementation of genomic testing in clinical practice is critical for identification of men with metastatic castration-resistant prostate cancer (mCRPC) eligible for olaparib and future molecularly targeted therapies.

Patients and methods: An investigational clinical trial assay, based on the FoundationOneCDx tissue test, was used to prospectively identify patients with qualifying homologous recombination repair gene alterations in the phase III PROfound study. Evaluation of next-generation sequencing (NGS) tissue test outcome against preanalytic parameters was performed to identify key factors influencing NGS result generation.

Results: A total of 4,858 tissue samples from 4,047 patients were tested and reported centrally. NGS results were obtained in 58% (2,792/4,858) of samples (69% of patients). Of samples submitted, 83% were primary tumor samples (96% were archival and 4% newly obtained). Almost 17% were metastatic tumor samples (60% were archival and 33% newly obtained). NGS results were generated more frequently from newly obtained compared with archival samples (63.9% vs. 56.9%) and metastatic compared with primary samples (63.9% vs. 56.2%). Although generation of an NGS result declined with increasing sample age, approximately 50% of samples ages >10 years generated results. While higher tumor content and DNA yield resulted in greater success in obtaining NGS results, other factors, including selection and preservation of samples, may also have had an impact.

Conclusions: The PROfound study shows that tissue testing to identify homologous recombination repair alterations is feasible and that high-quality tumor tissue samples are key to obtaining NGS results and identifying patients with mCRPC who may benefit from olaparib treatment.
Full Text
https://aacrjournals.org/clincancerres/article/28/8/1518/694173/Tumor-Genomic-Testing-for-gt-4-000-Men-with
DOI
10.1158/1078-0432.CCR-21-3940
Appears in Collections:
1. College of Medicine (의과대학) > Dept. of Urology (비뇨의학교실) > 1. Journal Papers
Yonsei Authors
Choi, Young Deuk(최영득) ORCID logo https://orcid.org/0000-0002-8545-5797
URI
https://ir.ymlib.yonsei.ac.kr/handle/22282913/188539
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