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Deucravacitinib in patients with moderate-to-severe scalp psoriasis: Results from the phase IIIb/IV PSORIATYK SCALP trial

By Dylan Barrett

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Oct 14, 2024

Learning objective: After reading this article, learners will be able to cite a new clinical development in psoriasis.



The ongoing phase IIIb/IV multicenter, randomized, double-blind PSORIATYK SCALP trial (NCT05478499) is evaluating the safety and efficacy of deucravacitinib (n = 103), an oral, selective, allosteric TYK2 inhibitor, vs placebo (n = 47) in adult patients with moderate-to-severe scalp psoriasis.1 This trial includes patients with less extensive overall psoriasis (BSA involvement 3–10%) compared with the phase III POETYK PSO-1 and POETYK PSO-2 trials. Interim results were presented by Mark Lebwohl at the EADV 2024 Congress. 1


Key learnings

The primary endpoint was met; at Week 16, ss-PGA 0/1 response rates were 48.5% in the deucravacitinib group vs 13.7% in the placebo group (p < 0.0001). Among patients with sPGA ≥3, ss-PGA 0/1 response rates in the deucravacitinib (n = 96) vs placebo groups (n = 47) were 50.0% vs 12.8% (p < 0.0001).

At Week 16, deucravacitinib when compared to placebo improved PSSI 90 response rates (38.8% vs 2.0%; p < 0.0001), CFB scalp-specific itch NRS (−3.2 vs −0.7; p < 0.0001), and sPGA 0/1 response rates in patients with sPGA ≥3 (51.0% vs 4.3%; p < 0.0001), BSA involvement 3–10% (42.9% vs 5.3%; p < 0.0001) and BSA involvement >10% (57.6% vs 0.0%; p = 0.0004). 

Safety findings were consistent with the known profile of deucravacitinib, with no new signals observed. 

Results from the PSORIATYK SCALP trial suggest that deucravacitinib is well tolerated and effective in patients with moderate-to-severe scalp psoriasis, including patients with less extensive overall body psoriasis. 

Abbreviations: BSA, body surface area; CFB, change from baseline; EADV, European Academy of Dermatology and Venereology; NRS, numeric rating scale; PSSI 90, ≥90% improvement from baseline in Psoriasis Scalp Severity Index; sPGA, static Physician Global Assessment; sPGA 0/1; sPGA score of 0 or 1; ss-PGA 0/1, scalp-specific Physician Global Assessment score of 0 or 1; TYK2, tyrosine kinase 2.

References

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