BCLC-study: Prevalence of BRCA1 and BRCA2 among systematically collected breast cancer-only families

Coordinator Tim Bishop (Leeds, UK) 
Aim To determine the roles of BRCA1 and BRCA2 in systematically collected families without ovarian cancer and with a defined number of breast cancer cases diagnosed under the age of 50. 
Calls for Mutation-screening data on families complying with the criteria, including type of mutation-test, number of cases under 50, number of families screened, number of families positive for either BRCA1 or BRCA2
Status Final data request circulated, data accrual closed 15 January 1999.

May 5, 1999