Stafib-1 is the first selective inhibitor of the STAT5b SH2 domain, with a Ki of 44 nM and an IC50 of 154 nM[1].
Stafib-1 is the first small molecule which inhibits the STAT5b SH2 domain with more than 50-fold selectivity over STAT5a[1].
[1]. Nagarajan Elumalai, et al. Rational development of Stafib-2: a selective, nanomolar inhibitor of the transcription factor STAT5b. Sci Rep. 2017 Apr 11;7(1):819.
















