CTNNA1 Familial Expansion Study

The CAFÉ Study aims to determine the degree to which loss-of-function variants in the CTNNA1 gene are associated with hereditary cancers, including gastric cancer, breast cancer, as well as other cancers that may be associated with this gene. By obtaining personal and family history information from individuals who carry a CTNNA1 loss-of-function variant and their family members, this study will aim to better define CTNNA1 associated cancer risks and determine whether there is a genotype/phenotype correlation for CTNNA1 loss-of-function variants. This information will be important for the future cancer risk management of individuals who carry a CTNNA1 loss-of-function variant.