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Efficacy and Safety of the Combination of Pozelimab and Cemdisiran Versus Continued Eculizumab or Ravulizumab Treatment in Adult Patients With Paroxysmal Nocturnal Hemoglobinuria

NCT05131204 · Status: TERMINATED · Phase: PHASE3 · Type: INTERVENTIONAL · Enrollment: 3

Last updated 2025-04-08

Study results available
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Summary

The primary objective of the study is:

To evaluate the effect of pozelimab and cemdisiran combination therapy on hemolysis, as assessed by lactate dehydrogenase (LDH), after 36 weeks of treatment, in patients with PNH who switch from eculizumab or ravulizumab therapy versus patients who continue their eculizumab or ravulizumab therapy

The secondary objectives of the study are to:

* Evaluate the effect of pozelimab and cemdisiran combination treatment versus anti-C5 standard-of-care treatment (eculizumab or ravulizumab) on the following:

* Transfusion requirements and transfusion parameters
* Measures of hemolysis: LDH control, breakthrough hemolysis, and inhibition of CH50
* Hemoglobin levels
* Fatigue as assessed by Clinical Outcome Assessments (COAs)
* Health-related quality of life (HRQoL) as assessed by COAs
* Safety and tolerability
* To assess the concentrations of total pozelimab and either total eculizumab or total ravulizumab in serum and total cemdisiran and total C5 protein in plasma
* To assess the immunogenicity of pozelimab and cemdisiran

Conditions

Interventions

DRUG

Cemdisiran

Administered per protocol

DRUG

Eculizumab

Administered per protocol

DRUG

Pozelimab

Administered per protocol

DRUG

Ravulizumab

Administered per protocol

Sponsors & Collaborators

Principal Investigators

  • Clinical Trial Management · Regeneron Pharmaceuticals

Study Design

Allocation
RANDOMIZED
Purpose
TREATMENT
Masking
NONE
Model
PARALLEL

Eligibility

Min Age
18 Years
Sex
ALL
Healthy Volunteers
No

Timeline & Regulatory

Start
2022-10-06
Primary Completion
2023-07-12
Completion
2023-07-12
FDA Drug
Yes

Countries

  • United States

Study Locations

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Entities

Drugs
Diseases
Companies

Read the full study record

This page highlights key information. For complete eligibility criteria, study locations, investigator contacts, and the full protocol, visit the original record on ClinicalTrials.gov.

View NCT05131204 on ClinicalTrials.gov