Soterios Topical Could Take On JAK Class In Alopecia Areata

The UK biotech unveils Phase II data showing an ability to reduce severity of mild-to-moderate AA, with full hair restoration in some patients. If approved, STS-01 will compete with Olumiant and Litfulo.

Front view of a balding woman before and after hair treatment. Divided image of the head. Two halves. Sticker revealing healthy scalp. Female alopecia. Isolated vector illustration.
Soterios wants to compete against JAK inhibitors in alopecia areata

Privately held Soterios Pharma unveiled positive top-line Phase II data for its alopecia areata candidate STS-01 on 30 May, saying the drug could be positioned to compete with established JAK inhibitors in the underserved disease and specifically as a therapeutic option for mild-to-moderate AA, cases in which the patient has sustained less than 50% hair loss.

Key Takeaways
  • Soterios announced that its STS-01 significantly reduces severity of alopecia areata in mild-to-moderate disease.

  • The topical, with an undisclosed mechanism of action, would compete with JAK inhibitors such as Lilly/Incyte’s Olumiant and Pfizer’s Litfulo

Headed by former Shire Pharmaceuticals Group PLC exec David Fleet as CEO, Soterios says STS-01 can provide effective, safe and convenient non-steroidal topical therapy for less-severe AA. In a 158-patient trial testing four doses – 0.25%, 0.5%, 1%, 2% – versus placebo for 24 weeks, the 1% dose of STS-01 met the primary endpoint, with 75

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