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@ARTICLE{Arif:301508,
author = {S. Arif and N. Muhammad and B. H. Ang and H. Naeemi and W.
Sami and W. K. Ho and U. Hamann$^*$ and M. U. Rashid},
title = {{P}redicting the likelihood of carrying {BRCA}1 or {BRCA}2
pathogenic variants in high-risk {P}akistani breast cancer
patients.},
journal = {Breast cancer research and treatment},
volume = {212},
number = {2},
issn = {0167-6806},
address = {Dordrecht [u.a.]},
publisher = {Springer Science + Business Media B.V.},
reportid = {DKFZ-2025-01047},
pages = {291-298},
year = {2025},
note = {2025 Jul;212(2):291-298},
abstract = {Pathogenic variants (PVs) in BRCA1/2 increase the lifetime
risk of breast cancer (BC). Predictive algorithms for
BRCA1/2 PVs, primarily developed for Caucasian BC patients,
often underestimate carrier probability in Asian
populations. The recently developed Asian Risk Calculator
(ARiCa) aims to predict BRCA1/2 PV likelihood in
Malaysian/Singaporean BC patients. This study investigates
the ARiCa's performance in Pakistani female BC patients.A
cohort of 627 high-risk Pakistani female BC patients was
evaluated. Using ARiCa, the likelihood of being a BRCA1/2
carrier was estimated based on factors such as age at
diagnosis, ethnicity, bilateral BC status, tumor
histopathological features, and family history of BC or
ovarian cancer. The tool's discriminative ability was
evaluated using the area under the curve (AUC).Of the
participants, 133 $(21.2\%)$ were BRCA1 carriers, 25
$(4.0\%)$ were BRCA2 carriers, and 469 $(74.8\%)$ were
non-carriers. The mean age at BC diagnosis was 34.3 years
(range 19-73). Overall, ARiCa showed well calibration for
predicting BRCA1/2 (HL 12.11, P = 0.147), BRCA1 (HL 14.17, P
= 0.078), and BRCA2 carriers (HL 9.01, P = 0.342). The tool
showed acceptable discrimination for BRCA1/2 (AUC 0.77,
$95\%$ CI 0.72-0.81) and BRCA1 carriers (AUC 0.80, $95\%$ CI
0.75-0.84), but lower discrimination for BRCA2 carriers (AUC
0.51, $95\%$ CI 0.39-0.64). At a $21\%$ threshold, ARiCa
would recommend BRCA1/2 screening for $43\%$ of patients,
with sensitivity and specificity at $73\%$ and $68\%,$
respectively.The ARiCa tool demonstrates strong predictive
performance for BRCA1/2 carriers, specifically for BRCA1
carriers in Pakistani BC patients, suggesting its potential
clinical utility.},
keywords = {Asian Risk Calculator (ARiCa) (Other) / Breast cancer
(Other) / Pakistan (Other) / Risk prediction tool (Other)},
cin = {B072},
ddc = {610},
cid = {I:(DE-He78)B072-20160331},
pnm = {312 - Funktionelle und strukturelle Genomforschung
(POF4-312)},
pid = {G:(DE-HGF)POF4-312},
typ = {PUB:(DE-HGF)16},
pubmed = {pmid:40392478},
doi = {10.1007/s10549-025-07724-4},
url = {https://inrepo02.dkfz.de/record/301508},
}