ETV1 and breast carcinoma: Recently, ETV1-HERV-K fusions have been described, corresponding to the 5′-untranslated region (UTR) of HERV-K-22q11.2326 and HERV-K17.41 Additionally, the ETV1-HERV-K-22q11.23 fusion is also inducible in LNCaP in response to androgen,26 similar to HML-2 induction by estrogen and progesterone in breast cancer cell lines.33