Heidi Dvinge received a postdoctoral fellowship from the Department of Defense’s Breast Cancer Research Program. Heidi proposed to determine how the RNA components of the spliceosome contribute to breast cancer. These spliceosomal RNAs are best known for playing basal roles in splicing catalysis, and are not typically studied in the context of splicing regulation or dysregulation in disease. Heidi found evidence that spliceosomal RNAs may play important roles in the progression of “triple-negative” breast cancers, which are frequently aggressive and difficult to treat with currently available therapies.