Age-And tumor subtype-specific breast cancer risk estimates for CHEK2∗1100delC Carriers

Abstract

Purpose CHEK2∗1100delC is a well-established breast cancer risk variant that is most prevalent in European populations; however, there are limited data on risk of breast cancer by age and tumor subtype, which limits its usefulness in breast cancer risk prediction. We aimed to generate tumor subtypeand age-specific risk estimates by using data from the Breast Cancer Association Consortium, including 44,777 patients with breast cancer and 42,997 controls from 33 studies genotyped for CHEK2∗1100delC. Patients and Methods CHEK2∗1100delC genotyping was mostly done by a custom Taqman assay. Breast cancer odds ratios (ORs) for CHEK2∗1100delC carriers versus noncarriers were estimated by using logis..