A Study to Evaluate the Efficacy and Safety Study of Povorcitinib in Participants With Prurigo Nodularis (STOP-PN2)

Prior treatment

• Diagnosis of PN secondary to medications.
• Active AD lesions (signs and symptoms other than dry skin) within 3 months prior to Screening visit.

Other illness

• Chronic pruritus due to a condition other than PN or neuropathic and psychogenic pruritus.
• Evidence of infection with TB, HBV, HCV or HIV.
• History of failure to any topical or systemic JAK or TYK2 inhibitor as treatment of PN or any inflammatory disease.

Lab values

• Medical history including thrombocytopenia, coagulopathy or platelet dysfunction; venous and arterial thrombosis, deep vein thrombosis, pulmonary embolism, stroke, moderate to severe heart failure, cerebrovascular accident, myocardial infarction, or other significant cardiovascular diseases; Q-wave interval abnormalities; disseminated herpes zoster or dermatomal herpes zoster; disseminated herpes simplex; chronic/recurrent infections; malignancies.
• Laboratory values outside of the protocol-defined ranges.
  • Other protocol-defined Inclusion/Exclusion Criteria apply.

Other

• Women who are pregnant (or are considering pregnancy) or breastfeeding.

• Male and female participants 18 to 75 years of age.
• Clinical diagnosis of PN for at least 3 months prior to Screening visit.
• Pruritus, defined as an average Itch NRS score ≥ 7 during the 7 days prior to Day 1/Baseline.
• Total of ≥ 20 pruriginous lesions on ≥ 2 different body regions (both legs, and/or both arms, and/or trunk) at Screening and Day 1/Baseline.
• Documented history of treatment failure, demonstrated intolerance, or contraindication to a previous PN treatment.
• Willingness to avoid pregnancy or fathering children.