Abstract
Difficult-to-treat palmoplantar psoriasis has a disproportionately negative impact on quality of life. We evaluated the efficacy and safety of apremilast in palmoplantar psoriasis. A post hoc analysis of data pooled from phase IIb (PSOR-005) and phase III (Efficacy and Safety Trial Evaluating the Effects of Apremilast in Psoriasis [ESTEEM] 1 and 2) clinical studies was conducted to determine the effect of apremilast 30mg twice daily versus placebo at week 16 in a subset of patients with moderate to severe plaque psoriasis with active palmoplantar psoriasis (baseline Palmoplantar Psoriasis Physician Global Assessment [PPPGA] score ≥1). Significantly more patients taking apremilast with moderate to severe palmoplantar psoriasis (baseline PPPGA score ≥3) achieved PPPGA score 0 (clear) or 1 (almost clear) compared with placebo at week 16 (48% vs 27%; P=.021). At week 16, 46% of the apremilast group with baseline PPPGA score 1 or higher achieved a PPPGA score of 0 versus 25% of the placebo group (P<.001); 59% of the apremilast group had a PPPGA score of 0 or 1 with 1-point or more improvement versus 39% receiving placebo (P<.001). This post hoc analysis was limited to 16weeks and did not assess palmoplantar pustules, lesion localization, or surface area involvement. Apremilast may be a useful oral treatment option for patients with moderate to severe palmoplantar plaque psoriasis.
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