Safety of Anumigilimab (CSL324) in Adults With Sickle Cell Disease (SCD)

NCT ID: NCT07224360

Last Updated: 2025-11-04

Study Results

Results pending

The study team has not published outcome measurements, participant flow, or safety data for this trial yet. Check back later for updates.

Basic Information

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Recruitment Status

NOT_YET_RECRUITING

Clinical Phase

PHASE2

Total Enrollment

63 participants

Study Classification

INTERVENTIONAL

Study Start Date

2025-11-15

Study Completion Date

2028-06-29

Brief Summary

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This is a phase 2a, global, multicenter, randomized, double-blind, placebo-controlled study investigating the safety of anumigilimab administered subcutaneously (SC) at the maximum tolerated dose (MTD) in adult participants with SCD.

The primary aim of the study is to assess the safety of anumigilimab in participants with SCD. Participants will be treated for 64 weeks: for 12 weeks in the dose escalation period, where the dose will be escalated to each participant's individual MTD; and for 52 weeks at the MTD in the maintenance period.

Detailed Description

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Conditions

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Sickle Cell Disease

Study Design

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Allocation Method

RANDOMIZED

Intervention Model

PARALLEL

This is a double blind, placebo controlled study.
Primary Study Purpose

TREATMENT

Blinding Strategy

QUADRUPLE

Participants Caregivers Investigators Outcome Assessors

Study Groups

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Anumigilimab

Safety of Anumigilimab (CSL324) in Adults with Sickle Cell Disease (SCD)

Group Type EXPERIMENTAL

Anumigilimab

Intervention Type BIOLOGICAL

Participants will receive anumigilimab, escalated to a maximum dose guided by absolute neutrophil count (ANC) and safety concerns.

Placebo

Participants will receive matching volume of placebo.

Group Type PLACEBO_COMPARATOR

Placebo

Intervention Type DRUG

Volume matched saline will be administered SC.

Interventions

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Anumigilimab

Participants will receive anumigilimab, escalated to a maximum dose guided by absolute neutrophil count (ANC) and safety concerns.

Intervention Type BIOLOGICAL

Placebo

Volume matched saline will be administered SC.

Intervention Type DRUG

Eligibility Criteria

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Inclusion Criteria

* • Adults aged greater than or equal to (\>=) 18 years on the day of signing the informed consent form.
* • Confirmed diagnosis of SCD of any genotype.
* • Experienced 1 to 12 VOCs requiring a visit to a medical facility and treatment with parenteral opioids or a parenteral nonsteroidal anti-inflammatory drug within the 12 months before Screening.
* • HU Regimen:
* a. On stable and well-tolerated Hydroxyurea (HU) regimen for at least 30 days before Screening.
* or
* b. HU was discontinued or refused (eg, due to concern of side effects or lack of effect).

Exclusion Criteria

* • Absolute neutrophil count less than (\<) 2.5 ×10\^9 cells/Litre at Screening or Baseline (Week 1 Day 1).
* • If on SCD preventive medication, dose is not stable in the 30 days before Screening.
Minimum Eligible Age

18 Years

Eligible Sex

ALL

Accepts Healthy Volunteers

No

Sponsors

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CSL Behring

INDUSTRY

Sponsor Role lead

Responsible Party

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Responsibility Role SPONSOR

Principal Investigators

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Study Director

Role: STUDY_DIRECTOR

CSL Behring

Central Contacts

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Trial Registration Coordinator

Role: CONTACT

+1 610-878-4697

Other Identifiers

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2025-521154-42-00

Identifier Type: CTIS

Identifier Source: secondary_id

CSL324_2002

Identifier Type: -

Identifier Source: org_study_id

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