Furthermore, we detected AR‐V7 mRNA expression in 95.3% of primary tumor samples, which is more frequent than the 37–70% of AR‐V7 positive SDC cases reported earlier.12, 15, 25 In CRPC, AR‐V7 expression explains at least in part the resistance to ADT,26 and AR‐V7 expression is elevated in response to ADT.14 We found AR‐V7 expression prior to ADT. Here, AR is linked to neoplasm.