AR and pachyonychia congenita: Notably, the expression of AR-V3, AR-V7 and AR-V9 was strongly associated with the levels of full-length AR in sample set 2 (Fig. 2) and in sample set 1 (Supplementary Fig. S4), suggesting that the expression of AR locus drives the expression of AR-Vs both in hormone-naïve PC and in CRPC.