A Study to Evaluate Rocatinlimab (AMG 451) in Adolescent Participants With Moderate-to-severe Atopic Dermatitis (AD) (ROCKET-ASTRO)

Amgen

Status and phase: Active, not recruiting; Phase 3

Conditions: Atopic Dermatitis

Treatments: Drug: Rocatinlimab; Drug: Placebo

Study type: Interventional

Funder types: Industry

Identifiers

NCT05704738

2022-501586-50 (Other Identifier)

20210145

Details and patient eligibility

About

The purpose of this study is to evaluate the efficacy and safety of rocatinlimab in monotherapy and combination therapy treatment in adolescent participants.

Enrollment: 532 patients

Sex: All

Ages: 12 to 17 years old

Volunteers: No Healthy Volunteers

Inclusion criteria

• Age ≥ 12 to < 18 years at Day 1.
• Diagnosis of AD (according to American Academy of Dermatology Consensus Criteria [Eichenfield et al, 2014]) that has been present for at least 12 months before signing of informed consent.
• Body weight ≥ 40 kg at screening.
• History of inadequate response to TCS of medium to higher potency (with or without TCI).
• EASI score ≥ 12 at initial screening.
• EASI score ≥ 16 at Day 1.
• vIGA-AD score ≥ 3.
• ≥10% body surface area of AD involvement.
• Worst pruritus NRS ≥ 4.

Exclusion criteria

• Treatment with a biological product within 12 weeks or 5 half-lives, whichever is longer, prior to Day 1.

• Treatment with any of the following medications or therapies within 4 weeks or 5 half-lives, whichever is longer, prior to Day 1:

  1. Systemic corticosteroids
  2. Non-biologic, non-targeted systemic immunosuppressants
  3. Phototherapy
  4. Oral or Topical Janus kinase inhibitors

• Treatment with any of the following medications or therapies within 1 week, prior to Day 1:

  1. TCS of any potency
  2. TCI
  3. Topical phosphodiesterase 4 inhibitors
  4. Other topical immunosuppressive agents

Trial design

Primary purpose: Treatment

Allocation: Randomized

Interventional model: Sequential Assignment

Masking: Double Blind

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532 participants in 4 patient groups

Arm A: Dose 1

Experimental group

Description:

Part 1 (Initial Period); Week 0 to Week 24: Rocatinlimab Dose 1 every 4 weeks (Q4W) for 24 weeks with loading dose at Week 2 (+ topical corticosteroids (TCS)/ topical calcineurin inhibitor (TCI) if within combination therapy cohort). Part 2 (Maintenance Period); Week 24 to Week 52: Part 1 Responders will be rerandomised at Week 24 to Rocatinlimab Dose 1 Q4W or every 8 weeks (Q8W) for 28 weeks (+ TCS/TCI if within combination therapy cohort).

Treatment:

Drug: Rocatinlimab

Arm B: Dose 2

Experimental group

Description:

Part 1 (Initial Period); Week 0 to Week 24: Rocatinlimab Dose 2 Q4W for 24 weeks with loading dose at Week 2 (+TCS/TCI if within combination therapy cohort). Part 2 (Maintenance Period); Week 24 to Week 52: Part 1 Responders will be rerandomised at Week 24 to Rocatinlimab Dose 2 Q4W or Q8W for 28 weeks (with TCS/TCI if within combination therapy cohort).

Treatment:

Drug: Rocatinlimab

Arm C: Placebo

Experimental group

Description:

Part 1 (Initial Period); Week 0 to Week 24: Placebo Q4W for 24 weeks with loading dose at Week 2 (+TCS/TCI if within combination therapy cohort). Part 2 (Maintenance Period); Week 24 to Week 52: Part 1 Responders will be reassigned at Week 24 with Placebo Q4W for 28 weeks (with TCS/TCI if within combination therapy cohort).

Treatment:

Drug: Placebo

Arm D: Open-Label Dose 1

Experimental group

Description:

Part 2; Week 24 to Week 52: Part 1 Non-Responders will be reassigned at Week 24 with Rocatinlimab Open-label Dose 1 Q4W for 28 weeks (with TCS/TCI if within combination therapy cohort). Participants in Arms A, B or C Maintenance Period will be reassigned with Rocatinlimab Open-label Dose 1 Q4W (with TCS/TCI if within combination therapy cohort) upon relapse after Week 24.

Treatment:

Drug: Rocatinlimab