Efficacy and Safety of Ruxolitinib Cream in Vitiligo by Patient Characteristic Subgroups: Descriptive Pooled Analysis From Two Phase 3 Studies.

Introduction: Two phase 3 trials (TRuE-V1 and TRuE-V2) demonstrated that a topical formulation of the Janus kinase (JAK) 1/JAK2 inhibitor ruxolitinib significantly improved repigmentation versus vehicle cream in adolescent and adult patients with vitiligo. This post hoc analysis of pooled TRuE-V1/TRuE-V2 data evaluated efficacy and safety by baseline demographics and clinical characteristics.

Methods: Patients aged ≥ 12 years with nonsegmental vitiligo were randomized to vehicle cream or 1.5% ruxolitinib cream twice daily for 24 weeks, after which all patients could apply ruxolitinib cream through Week 52. Efficacy was evaluated using achievement of ≥ 75% improvement from baseline in facial Vitiligo Area Scoring Index [F-VASI75] at Week 52. Safety assessments included the frequency of treatment-emergent adverse events (AEs) and treatment-related AEs.

Results: The TRuE-V studies enrolled 674 patients. Week 52 F-VASI75 was achieved by 50.3% (176/350) of patients who applied ruxolitinib cream throughout and 28.2% (46/163) who crossed over from vehicle to ruxolitinib cream after Week 24. F-VASI75 responses were observed across subgroups regardless of patient age, sex, Fitzpatrick skin type, affected facial body surface area, disease duration, disease stability, and prior treatment status. Treatment-emergent AEs occurred in 52.1% (332/637) of patients, and treatment-related AEs occurred in 13.7% (87/637); rates were generally similar across demographic subgroups.

Conclusions: Adolescent and adult patients with vitiligo who applied ruxolitinib cream could achieve clinically meaningful repigmentation per F-VASI75 response at 1 year, regardless of their baseline demographics or clinical characteristics. Ruxolitinib cream was well tolerated, with a similar incidence of treatment-emergent and treatment-related AEs across subgroups.

Trial Registration: NCT04052425/NCT04057573.