Childhood, adolescent and young adulthood cancer risk in BRCA1 or BRCA2 pathogenic variant carriers

CONCLUSION: We found no evidence that BRCA1/2 PV carriers have an increased CAYA cancer risk aside from breast cancer in women in their 20’s. Our results, along with a critical evaluation of previous germline sequencing studies, suggest that the childhood and adolescent cancer risk conferred by BRCA1/2 PV would be low (ie, RR < 2) if it existed. Our findings do not support PV testing for offspring of BRCA1/2 PV carriers at ages <18 years, nor for conducting BRCA1/2 PV testing for childhood …