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NCT Number: NCT07783542

ORKA-002 Versus Placebo in Participants With Moderate-to-Severe Hidradenitis Suppurativa

This is a multicenter, randomized, double-blinded, placebo-controlled clinical study of ORKA-002 in adult participants with moderate-to-severe HS.

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Key information

Age range

18 year–79 year

Sex eligibility

All sexes

Study type

Interventional

Phase

Phase 2

Primary location

Oruka Therapeutics Investigative Site, Chapel Hill, North Carolina, United States

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About this study

The study will evaluate an induction dosing regimen of ORKA-002 administered every 4 weeks for 12 weeks compared with placebo during a double-blind induction period through Week 16. This will be followed by an open-label maintenance period, during which ORKA-002 will be administered every 12 weeks. The study will consist of four periods:

  • Screening Period
  • Induction Period (double-blind)
  • Maintenance Period (open-label)
  • Post-Treatment Follow-Up Period

Who can participate

Healthy volunteers accepted: No

Only the study team can determine whether someone qualifies for participation.

Inclusion criteria

  • Has signs and symptoms of HS for at least 6 months;
  • Has HS lesions present in ≥ 2 distinct anatomic areas, one of which must be at least Hurley Stage II or III;
  • Has a history of inadequate response to systemic antibiotic treatment for HS, exhibited recurrence of HS symptoms after discontinuation of systemic antibiotics for HS, demonstrated intolerance to systemic antibiotics for HS, or has a contraindication to systemic antibiotics for HS

Exclusion criteria

  • Presence of any other active skin disease or condition that may interfere with the assessment of HS;
  • Diagnosis or suspected diagnosis of autoimmune diseases or inflammatory conditions other than HS

Treatment and study plan

ORKA-002

Drug

ORKA-002 administered by subcutaneous (SC) injection

Placebo

Other

Placebo administered by subcutaneous (SC) injection

Primary outcomes

  1. Proportion of participants achieving HiSCR75 at Week 16

    Time frame: Week 16

    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.

Secondary outcomes

  1. Proportion of participants achieving HiSCR50 at Week 16

    Time frame: Week 16

    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

  2. Change from Baseline in the weekly mean of the Hidradenitis Suppurativa Symptom Daily Diary (HSSDD) worst skin pain score at Week 16

    Time frame: Week 16

    This endpoint assesses the change from baseline to Week 16 in the average weekly patient-reported worst skin pain score, as recorded daily in the HSSDD.

  3. Proportion of participants with a ≥ 3-point decrease from Baseline in the weekly mean of the HSSDD worst skin pain score at Week 16 among those with a Baseline score ≥ 3

    Time frame: Week 16

    This endpoint assesses the proportion of participants who achieve at least a 3-point reduction in their weekly mean worst skin pain score by Week 16.

  4. Incidence of TEAEs, TESAEs, and TEAESIs and Observed values, potentially clinically important values, and change from baseline in vital signs, laboratory tests, and electrocardiograms

    Time frame: Day 1 through Week 92

    Incidence of Treatment-emergent Adverse Events (TEAEs), Treatment-emergent Serious Adverse events (TESAEs), and TEAEs of Special Interest (TEAESIs); These endpoints assess safety and tolerability of ORKA-002 in participants with moderate-to-severe HS.

Study contacts

Contact information is provided by the study sponsor or research team.

Oruka Clinical Trials Information

CONTACT

[email protected]

781-560-0299

Sponsors and collaborators

Lead sponsor

Oruka Therapeutics, Inc.

Industry

Registry information

Official study title

A Multicenter, Randomized, Double-Blinded, Placebo-Controlled Study to Evaluate the Efficacy, Safety, Tolerability, and Pharmacokinetics of ORKA-002 in Adult Participants With Moderate-to-Severe Hidradenitis Suppurativa

Important dates

Study start
2026
Primary completion
2028
Study completion
2029
First posted
Aug 24, 2026
Registry last updated
Aug 31, 2026

OpenTrials presents study information sourced from ClinicalTrials.gov. The official registry record should be consulted for the latest information.

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This listing is for discovery and informational purposes only. It is not medical advice, does not guarantee that a study is recruiting, and does not determine eligibility. Contact the study team and a qualified healthcare professional when considering participation.

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