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Inclacumab

Phase 3

Sickle Cell Disease | Small molecule | Hematology |Pfizer, Inc.|Last Updated: Dec 2, 2025

Success Probability

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Market & Valuation

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Trial Design

RandomizedDouble-BlindPLACEBO_CONTROLLEDDMC
Total Trials1
Total Enrollment241

FDA Designations

No designations recorded

Clinical trial landscape

Inclacumab · 1 trial · 3 indications

Phase 3 1
NCT04935879A Study to Assess the Safety and Efficacy of Inclacumab in Participants With Sickle Cell Disease Experiencing Vaso-occlusive CrisesSickle Cell Disease
COMPLETED241 Analytics
PHASE3COMPLETED
A Study to Assess the Safety and Efficacy of Inclacumab in Participants With Sickle Cell Disease Experiencing Vaso-occlusive Crises
Sickle Cell DiseaseUnlock trial analytics

Study Endpoints

Primary Endpoints

Rate of Vaso-occlusive Crises (VOCs) [Adjudicated] Through Week 48
Randomization (Day 1) up to Week 48

A VOC was defined as an acute episode of pain that: had no medically determined cause other than a vaso-occlusive event; resulted in a visit to a medical facility (hospitalization, emergency department, urgent care center, outpatient clinic, or infusion center), or resulted in a remote contact with a healthcare provider and required parenteral narcotic agents, parenteral nonsteroidal anti-inflammatory drugs (NSAIDs), or an increase in treatment with oral narcotics. The rate of VOC was defined as number of VOC events per 48 weeks and presented in this outcome measure.

Secondary Endpoints

Time to First VOC Through Week 48
Randomization (Day 1) up to Week 48
Time to Second VOC Through Week 48
Randomization (Day 1) up to Week 48
Percentage of Participants With no VOCs Through Week 48
Randomization (Day 1) up to Week 48
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Study Design & Arms

AllocationRANDOMIZED
MaskingQUADRUPLE
ModelPARALLEL
PurposeTREATMENT

Treatment Arms

ArmTypeDescription
inclacumab, 30 mg/kgEXPERIMENTALParticipants will receive inclacumab 30 mg/kg administered IV every 12 weeks
placeboPLACEBO_COMPARATORParticipants will receive placebo administered IV every 12 weeks.

Interventions

NameTypeDescription
InclacumabDRUGInclacumab will be supplied in single use 10 mL vials at a concentration of 50 mg/mL. One vial contains 500 mg of inclacumab. This is a liquid concentrate for IV infusion.
PlaceboDRUGPlacebo will be supplied in single use 10 mL vials containing the same ingredients without the active drug. Placebo will be prepared as a liquid concentrate for IV infusion and administered in the same manner as active study drug
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Eligibility Criteria

Age Range12 Years to N/A
SexALL
Healthy VolunteersNo
Study Sites58

Inclusion Criteria: 1. Participant has a confirmed diagnosis of SCD (HbSS, HbSC, HbSB0 thalassemia, or HbSB+ thalassemia genotype). Documentation of SCD genotype is required and may be based on documented history of laboratory testing or confirmed by laboratory testing during Screening. 2. Part...

Countries:United StatesBrazilColombiaEgyptFranceKenyaLebanonNigeriaOmanSaudi ArabiaTanzaniaTurkey (Türkiye)
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Frequently asked questions about Inclacumab

What is Inclacumab used for in Sickle Cell Disease?

Inclacumab is an investigational small molecule being studied for the treatment of Sickle Cell Disease, specifically for patients experiencing vaso-occlusive crises. It is being evaluated to assess its safety and efficacy in reducing these painful episodes. The drug is currently in Phase 3 clinical development and has not been approved by regulatory authorities.

Who makes Inclacumab?

Inclacumab is being developed by Pfizer, Inc., a biopharmaceutical company traded on the New York Stock Exchange under the ticker symbol PFE. Pfizer is conducting clinical research to evaluate the drug's potential in treating Sickle Cell Disease, with the most recent trial being a Phase 3 study.

What phase is Inclacumab in?

Inclacumab is in Phase 3 clinical development. A Phase 3 trial, NCT04935879, has been completed, evaluating the drug in 241 participants with Sickle Cell Disease experiencing vaso-occlusive crises. As an investigational drug, Inclacumab has not yet received FDA approval and remains under clinical investigation.

What clinical trials is Inclacumab in?

Inclacumab has one completed clinical trial, NCT04935879, a Phase 3 study assessing its safety and efficacy in participants with Sickle Cell Disease experiencing vaso-occlusive crises. The trial enrolled 241 participants across multiple countries, including the United States, Brazil, France, and Nigeria. It was a randomized, double-blind, placebo-controlled study.

Is Inclacumab the same as any other drug?

Inclacumab is a distinct investigational small molecule developed by Pfizer. No alternative names for this drug have been reported in clinical trial records. It is being studied specifically for Sickle Cell Disease and vaso-occlusive crises, and is not known to be identical to any other marketed or investigational agent.