In the subgroup ( n = 131 ) with hand and/or foot psoriasis [ baseline 5-point hand/foot Investigator 's Global Assessment ( IGA ) score 2 ] , efficacy was assessed as percentage of subjects achieving an IGA response [ a score of 0 ( clear ) or 1 ( minimal ) and an improvement of 2 points on the 5-point hand/foot scale vs. baseline ] at Week 12 .