Alterations in homologous recombination repair genes in prostate cancer brain metastases.
Journal
Nature communications
ISSN: 2041-1723
Titre abrégé: Nat Commun
Pays: England
ID NLM: 101528555
Informations de publication
Date de publication:
03 05 2022
03 05 2022
Historique:
received:
06
05
2020
accepted:
12
04
2022
entrez:
3
5
2022
pubmed:
4
5
2022
medline:
6
5
2022
Statut:
epublish
Résumé
Improved survival rates for prostate cancer through more effective therapies have also led to an increase in the diagnosis of metastases to infrequent locations such as the brain. Here we investigate the repertoire of somatic genetic alterations present in brain metastases from 51 patients with prostate cancer brain metastases (PCBM). We highlight the clonal evolution occurring in PCBM and demonstrate an increased mutational burden, concomitant with an enrichment of the homologous recombination deficiency mutational signature in PCBM compared to non-brain metastases. Focusing on known pathogenic alterations within homologous recombination repair genes, we find 10 patients (19.6%) fulfilling the inclusion criteria used in the PROfound clinical trial, which assessed the efficacy of PARP inhibitors (PARPi) in homologous recombination deficient prostate cancer. Eight (15.7%) patients show biallelic loss of one of the 15 genes included in the trial, while 5 patients (9.8%) harbor pathogenic alterations in BRCA1/2 specifically. Uncovering these molecular features of PCBM may have therapeutic implications, suggesting the need of clinical trial enrollment of PCBM patients when evaluating potential benefit from PARPi.
Identifiants
pubmed: 35504881
doi: 10.1038/s41467-022-30003-5
pii: 10.1038/s41467-022-30003-5
pmc: PMC9065149
doi:
Substances chimiques
Poly(ADP-ribose) Polymerase Inhibitors
0
Types de publication
Journal Article
Research Support, Non-U.S. Gov't
Research Support, N.I.H., Extramural
Langues
eng
Sous-ensembles de citation
IM
Pagination
2400Subventions
Organisme : NCI NIH HHS
ID : P50 CA211024
Pays : United States
Informations de copyright
© 2022. The Author(s).
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