BRCA1 and hypoparathyroidism-retardation-dysmorphism syndrome: Likewise, the 4 patients with deficiencies in the BRCA1-binding proteins, BARD124 (n = 1), BRIP125 (n = 1), FAM175A26 (n = 1) and FANCA27 (n = 1), were all predicted as having BRCA1-type HRD.