RET and medullary thyroid gland carcinoma: Broad CNAs, which are defined as whole-chromosome- and chromosomal arm-level alterations, have been reported in 1p, 3q, 3p, 4, 7q, 9q, 12p, 13q, 19 and 22q in both sporadic and germline RET-positive MTC [11,12,13,14,15,16,17,18].