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NCT Number: NCT04179175

Extension Study to Assess Effects of Non-interrupted Versus Interrupted and Long Term Treatment of Two Dose Regimes of Secukinumab in Subjects With Hidradenitis Suppurativa

The purpose of this extension study is to evaluate maintenance of Hidradenitis Suppurativa Clinical Response (HiSCR response) in either continuous or interrupted therapy (using a randomized withdrawal period) of two dose regimens and to assess long-term efficacy, safety and tolerability of Secukinumab in subjects with moderate to severe hidradenitis suppurativa completing either of the 2 Phase III studies. This is an expanded access trial for the core trials CAIN457M2301 (NCT03713619) and CAIN457M2302 (NCT03713619).

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Key information

Conditions

Hidradenitis Suppurativa Bacterial Infections Bacterial Infections and Mycoses Hidradenitis Infections Skin Diseases Skin Diseases, Bacterial Skin Diseases, Infectious Skin and Connective Tissue Diseases Suppuration Sweat Gland Diseases

Age range

18 year–100 year

Sex eligibility

All sexes

Study type

Interventional

Phase

Phase 3

Primary location

Novartis Investigative Site, CABA, Buenos Aires, Argentina

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About this study

This is a multicenter extension study to both core Phase III studies CAIN457M2301 and CAIN457M2302 (Core studies). This study contains a randomized withdrawal design, double blinded and placebo controlled up to Week 104 or loss of response. The subjects with HiSCR response after 52 weeks of treatment in the "Core studies" will be randomized at 2:1 ratio to either continue on one of the two Secukinumab dosing regimens assigned in "Core studies" for another 52 weeks or will be placed on placebo. The primary endpoint is loss of response (LOR) assessed during the 52-week treatment duration (up to Week 104). Subjects who attained LOR will be transferred to open-label treatment to continue until the end of the study. Subjects on placebo who did not reach LOR up to Week 104 will be offered to continue in the open-label treatment or discontinue the study. Thus for subjects who were HiSCR responders at Week 52 of "Core studies", the open label treatment duration will vary and start either from the time of LOR or from Week 104 dose and last until Week 260 followed by 8 weeks of a post treatment follow-up period to week 268.

Subjects who were HiSCR non-responders at the end of "Core studies" will be offered to continue in open-label treatment until Week 260.

Subjects who prematurely discontinue the study, or who complete the study will enter a post-treatment follow up period (8 weeks) The primary objective is to evaluate maintenance of HiSCR response at Week 104 in either continuous or interrupted therapy compared to placebo. Secondary objectives are to assess the long-term safety and tolerability evaluated by adverse events, abnormal laboratory values and vital signs.

Who can participate

Healthy volunteers accepted: No

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

Inclusion criteria

  • written informed consent must be obtained before any assessment is performed
  • subject must have completed the study treatment period (52 weeks) in the core studies (AIN457M2301 or AIN457M2302) and had received secukinumab treatment during Treatment Period 2

Exclusion criteria

  • protocol deviation in the core study which will prevent the meaningful analysis of the extension study
  • ongoing or planned use of prohibited HS or non-HS treatment
  • participation in the extension could expose the subject to an undue safety risk
  • current sever progressive or uncontrolled disease which renders the subject unsuitable for the study

Treatment and study plan

secukinumab

Drug

secukinumab 300mg every 2 weeks

Other names: AIN457

Primary outcomes

  1. Time to Loss of Response (LOR) up to Week 104 in Hidradenitis Suppurativa Clinical Response (HiSCR) Responders

    Time frame: Up to 52 weeks: from randomization at the extension study (Week 52) up to Week 104 or loss of response. Study day is defined with respect to the core studies.

    Loss of response was defined as:

    • at least a 50% increase in abscess and/or nodules (AN) count compared to the average AN count from the 3 previous visits or at Week 52, whichever is lower and the increase was at least of 3 AN.
    • at least a 30% increase in AN compared to the average AN count from the 3 previous visits or Week 52, whichever is lower, with an increase of at least 2 AN and a further increase in the AN count of at least 2 AN at a re-assessment visit within 2-4 weeks

  2. Incidence Rate of Participants Achieving Loss of Response (LOR) up to Week 104 in Hidradenitis Suppurativa Clinical Response (HiSCR) Responders

    Time frame: Up to 52 weeks: from randomization at the extension study (Week 52) up to Week 104 or loss of response. Study day is defined with respect to the core studies.

    The incidence rate of participants achieving Loss of Response (LOR) was based on the primary estimand.

    • Day 1 = Date of 1st dose intake in the extension study.
    • Subjects at risk = Subjects who did not have LOR and were not censored before or at the start of the specified time interval.
    • Incidence rate (%) = (number of subjects with LOR / number of subjects at risk) x 100.

Secondary outcomes

  1. Number of Participants With Treatment Emergent Adverse Events

    Time frame: Up to 216 weeks: from randomization at the extension study (Week 52) up to Week 268. Study day is defined with respect to the core studies.

    To assess the long-term safety and tolerability of Secukinumab in subjects with moderate to severe hidradenitis suppurativa (HS)

Sponsors and collaborators

Lead sponsor

Novartis Pharmaceuticals

Industry

Registry information

Official study title

A Multicenter, Double-blind, Randomized Withdrawal Extension Study of Subcutaneous Secukinumab to Demonstrate Long-term Efficacy, Safety and Tolerability in Subjects With Moderate to Severe Hidradenitis Suppurativa

Important dates

Study start
2020
Primary completion
2023
Study completion
2026
First posted
Nov 27, 2019
Registry last updated
Mar 11, 2026

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

View the official ClinicalTrials.gov record (opens in a new tab)

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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