2019
DOI: 10.1136/jmedgenet-2018-105930
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Deleterious somatic variants in 473 consecutive individuals with ovarian cancer: results of the observational AGO-TR1 study (NCT02222883)

Abstract: BackgroundFor individuals with ovarian cancer (OC), therapy options mainly depend on BRCA1/2 germline status. What is the prevalence of deleterious somatic variants, that is, does genetic tumour testing identify subgroups of individuals who also might benefit from targeted therapy?MethodsPaired analysis of tumour-derived versus blood-derived DNA to determine the prevalence of deleterious somatic variants in OC predisposition genes (ATM, BRCA1/2, BRIP1, MSH2/6, PALB2, RAD51C/D and TP53) and the PIK3CA and PTEN … Show more

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Cited by 35 publications
(38 citation statements)
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“…When tumor testing is completed, follow-up genetic counseling and germline testing of patients with identified PVs is critical to clarify whether family members may be at risk. This is particularly important for HGSOC, as 57-85% of BRCA1/2 PVs identified in tumor tissues are germline in origin [25,[33][34][35]. In this study, 94% (16/17) of HGSOC patients with a BRCA1/2 PV in their tumor were referred for genetic counseling, all of whom provided a blood sample for germline testing.…”
Section: Discussionmentioning
confidence: 97%
“…When tumor testing is completed, follow-up genetic counseling and germline testing of patients with identified PVs is critical to clarify whether family members may be at risk. This is particularly important for HGSOC, as 57-85% of BRCA1/2 PVs identified in tumor tissues are germline in origin [25,[33][34][35]. In this study, 94% (16/17) of HGSOC patients with a BRCA1/2 PV in their tumor were referred for genetic counseling, all of whom provided a blood sample for germline testing.…”
Section: Discussionmentioning
confidence: 97%
“…The reported prevalence of deleterious somatic PIK3CA and/or PTEN variants in germline mutation-negative OC individuals (13%), together with encouraging data from Phase 1 trials on gynaecological patients receiving PI3K/AKT/mTOR inhibitors, suggest that this pathway will be more investigated in the future [39,40].…”
Section: Ovarian Cancermentioning
confidence: 99%
“…5 In ovarian cancer, mutation of PTEN has been a reported driver in endometrioid and clear cell subtypes. [6][7][8][9][10] Homozygous loss of PTEN is found in 6% of HGSOC 11 and loss-of-function mutations of Pten allow for accelerated tumour growth in mouse and in vitro models of HGSOC and ENOC. [12][13][14] We previously demonstrated that PTEN loss is prevalent in HGSOC using bioinformatics and image analysis methods that corrected for cellularity in gene expression signatures from The Cancer Genome Atlas.…”
Section: Introductionmentioning
confidence: 99%