USP12 (as part of a complex with WDR48 and WDR20) and USP26 can bind the androgen receptor and promote its deubiquitination (Faus et al. 2005, Burska et al. 2013, Dirac & Bernards 2010). USP26 is specifically expressed in testis tissue and is a potential infertility gene (Stouffs et al. 2005).