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A Study to Evaluate the Efficacy and Safety of Povorcitinib (INCB054707) in Participants With Moderate to Severe Hidradenitis Suppurativa (HS)

A Phase 3, Double-Blind, Randomized, Placebo-Controlled, Efficacy and Safety Study of Povorcitinib (INCB054707) in Participants With Moderate to Severe Hidradenitis Suppurativa

Status
Completed
Phases
Phase 3
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT05620836
Acronym
STOP-HS2
Enrollment
619
Registered
2022-11-17
Start date
2023-02-22
Completion date
2025-11-21
Last updated
2026-01-09

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Hidradenitis Suppurativa (HS)

Keywords

Hidradenitis Suppurativa, HS, INCB054707, Povorcitinib, Acne inversa, Hidradenitis

Brief summary

The purpose of this study is to evaluate the efficacy and safety of Povorcitinib (INCB054707) in participants with moderate to severe Hidradenitis Suppurativa (HS) over a 12-week placebo-controlled period, followed by a 42-week extension period.

Interventions

DRUGPovorcitinib

Oral, Tablet

DRUGPlacebo

Oral, Tablet

Sponsors

Incyte Corporation
Lead SponsorINDUSTRY

Study design

Allocation
RANDOMIZED
Intervention model
PARALLEL
Primary purpose
TREATMENT
Masking
QUADRUPLE (Subject, Caregiver, Investigator, Outcomes Assessor)

Intervention model description

Participants will be randomized 1:1:1 to Povorcitinib Dose A, Povorcitinib Dose B, or Placebo once a day (QD); participants who complete the placebo-controlled (PC) 12-week period may continue to a 42-week extension (EXT) period with Povorcitinib (Dose A or Dose B) QD.

Eligibility

Sex/Gender
ALL
Age
18 Years to No maximum
Healthy volunteers
No

Inclusion criteria

* Male and female participants ≥ 18 years of age. * Diagnosis of moderate to severe HS ≥ 3 months prior to Screening visit. * HS lesions present in ≥ 2 distinct anatomic areas, 1 of which must be at least Hurley Stage II or Hurley Stage III, at both the Screening and Baseline visits. * Total abscess and inflammatory nodule (AN) count ≥ 5 at both the Screening and Baseline visits. * History of inadequate response to an appropriate course of at least 1 conventional systemic therapy for HS (or demonstrated intolerance to, or have a contraindication to, a conventional systemic therapy for HS) * Agree to not use certain topical antiseptics on the areas affected by HS lesions during the placebo-controlled period. * Willingness to avoid pregnancy or fathering children. * Other inclusion criteria apply.

Exclusion criteria

* Draining tunnel count of \> 20 at Screening or Baseline visits. * Women who are pregnant (or who are considering pregnancy) or breastfeeding. * 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. * Evidence of infection with TB, HBV, HCV or HIV. * History of failure to JAK inhibitor treatment of any inflammatory disease. * Laboratory values outside of the protocol-defined ranges. * Other

Design outcomes

Primary

MeasureTime frameDescription
Proportion of participants who achieve Hidradenitis Suppurativa Clinical Response (HiSCR)Week 12HiSCR is defined as at least a 50% reduction from baseline in the total abscess and inflammatory nodule count, with no increase from baseline in abscess or draining tunnel count.

Secondary

MeasureTime frameDescription
Proportion of participants with flare12 WeeksParticipants who experience at least 1 flare over 12 weeks; flare is defined as at least a 25% increase in the total abscess and inflammatory nodule count with a minimum increase of 2 relative to baseline.
Proportion of participants with a ≥ 3-point decrease in Skin Pain Numeric Rating Scale (NRS) score among participants with baseline Skin Pain NRS score ≥ 3Week 12Participants with a Skin Pain score of at least 3 at baseline and who experience at least a 3-point decrease in Skin Pain score at Week 12, relative to baseline. Skin Pain is an 11-point NRS, ranging from 0 (no skin pain) to 10 (worst skin pain).
Proportion of participants who achieve Skin Pain NRS30 at Week 12 among participants with baseline Skin Pain NRS score ≥ 3.Week 12Participants with a Skin Pain score of at least 3 at baseline and who achieve at Week 12 Skin Pain NRS30, defined as at least a 30% reduction and at least 1-unit reduction from baseline in the Skin Pain NRS.
Proportion of participants with a ≥ 4-point increase from baseline in Functional Assessment of Chronic Illness Therapy - Fatigue (FACIT-F) scoreWeek 12Participants with a baseline FACIT-F score ≤ 48 and who experience at least a 4-point increase in FACIT-F score at Week 12, relative to baseline. The FACIT-F scale is a 13-item questionnaire that assesses self-reported fatigue and its impact upon daily activities and function over the past 7 days, with scores ranging from 0 (worst fatigue) to 52 (no fatigue).
Mean change from baseline in Dermatology Life Quality Index (DLQI) score54 weeksThe DLQI is a skin disease specific questionnaire aimed at the evaluation of how symptoms and treatment affect participants' health-related quality of life (QoL). The DLQI total score ranges from 0 to 30, with higher scores indicating lower skin health related QoL.
Mean change from baseline in abscess count54 weeksDefined as mean change of abscess(es) count relative to baseline.
Percentage change from baseline in abscess count54 weeksPercent Change from baseline in number of abscess(es)
Mean change from baseline in inflammatory nodule count54 weeksDefined as mean change of inflammatory nodule count relative to baseline.
Proportion of participants who achieve Hidradenitis Suppurativa Clinical Response 75 (HiSCR75)Week 12HiSCR75 is defined as at least a 75% reduction from baseline in the total abscess and inflammatory nodule count, with no increase from baseline in abscess or draining tunnel count.
Mean change from baseline in draining tunnel count54 weeksDefined as mean change of draining tunnel count relative to baseline.
Percentage change from baseline in draining tunnel count54 weeksDefined as Percent change from baseline in number of draining tunnel(s)
Extension Period: Proportion of participants who achieve HiSCRWeek 24HiSCR is defined as at least a 50% reduction from baseline in the total abscess and inflammatory nodule count, with no increase from baseline in abscess or draining tunnel count.
Extension Period: Proportion of participants who achieve HiSCR75Week 24HiSCR75 is defined as at least a 75% reduction from baseline in the total abscess and inflammatory nodule count, with no increase from baseline in abscess or draining tunnel count.
Extension Period: Proportion of participants with flareFrom Week 12 through Week 24Participants who experience at least 1 flare over the period under assessment; flare is defined as at least a 25% increase in the total abscess and inflammatory nodule count with a minimum increase of 2 relative to baseline.
Extension Period: Proportion of participants who achieved Skin Pain NRS30 among participants with baseline Skin Pain NRS score ≥ 3.Week 24Skin Pain NRS30 defined as at least a 30% reduction and at least 1-unit reduction from baseline in the Skin Pain NRS.
Extension Period: Proportion of participants who achieve maintenance of HiSCR or greater response at each visitFrom Week 12 through Week 54Maintenance of response defined as participants who achieve HiSCR at Week 12 and maintain it or achieve greater response at each visit during the EXT period.
Extension Period: Proportion of participants who achieve maintenance of HiSCR75 or greater response at each visitFrom Week 12 through Week 54Maintenance of response defined as participants who achieve HiSCR75 at Week 12 and maintain it or achieve greater response at each visit during the EXT period.
Percentage change from baseline in inflammatory nodule count54 weeksDefined as percent change from baseline in number of inflammatory nodule(s)

Countries

Australia, Bulgaria, Canada, Denmark, France, Germany, Italy, Poland, Spain, United Kingdom, United States

Outcome results

None listed

Source: ClinicalTrials.gov · Data processed: Jul 25, 2026