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Study to assess the safety of Voxelotor with long-term treatment in pediatric population

An Open-Label Extension Study of Voxelotor Administered Orally to Pediatric Participants with Sickle Cell Disease Who Have Participated in Voxelotor Clinical Trials

Status
Not yet recruiting
Phases
Phase 3
Study type
Interventional
Source
EU CTR
Registry ID
EUCTR2019-003144-76-GB
Enrollment
50
Registered
2019-10-14
Start date
2020-01-10
Completion date
Unknown
Last updated
2021-01-05

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Sickle Cell Disease MedDRA version: 21.0 Level: PT Classification code 10040644 Term: Sickle cell disease System Organ Class: 10010331 - Congenital, familial and genetic disorders

Interventions

Product Name: Voxelotor (500 mg) Pharmaceutical Form: Tablet INN or Proposed INN: VOXELOTOR CAS Number: 1446321-46-5 Current Sponsor code: GBT440-038 Concentration unit: mg milligram(s) Concentration

Sponsors

Global Blood Therapeutics, Inc.
Lead Sponsor

Eligibility

Sex/Gender
All

Inclusion criteria

Inclusion criteria: Participants who meet all of the following criteria will be eligible for study enrollment: 1. Male or female participant with SCD, aged = 4 to = 18 years, who participated and received study drug in a GBT-sponsored voxelotor pediatric clinical study Note: Participants who discontinued study drug due to an AE, but who remained on study, may be eligible for treatment in this study provided the AE does not pose a risk for treatment with voxelotor. 2. Female participant of childbearing potential is required to have a negative urine pregnancy test prior to dosing on Day 1. Note: Female participants who become childbearing during the study must be willing to have a negative urine pregnancy test to remain in the study. 3. If sexually active, female participant of childbearing potential must use highly effective methods of contraception until 30 days after the last dose of study drug. If sexually active, male participant must use barrier methods of contraception until 30 days after the last dose of study drug. 4. Participant has provided written assent (both the consent of the participant’s legal representative or legal guardian and the participant’s assent [where applicable] must be obtained) Are the trial subjects under 18? yes Number of subjects for this age range: 50 F.1.2 Adults (18-64 years) no F.1.2.1 Number of subjects for this age range F.1.3 Elderly (>=65 years) no F.1.3.1 Number of subjects for this age range

Exclusion criteria

Exclusion criteria: Participants meeting any of the following exclusion criteria will not be eligible for study enrollment: 1. Female participant who is breastfeeding or pregnant 2. Participant withdrew consent from a GBT-sponsored voxelotor pediatric clinical study 3. Participant was lost to follow-up from a GBT-sponsored voxelotor pediatric clinical study 4. Participant has any medical, psychological, safety, or behavioral conditions that, in the opinion of the investigator, may confound safety interpretation, interfere with compliance, or preclude informed consent

Design outcomes

Primary

MeasureTime frame
Main Objective: The objective of this open-label extension (OLE) is to assess the safety of, and SCD-related complications with, long-term treatment with voxelotor, in pediatric participants who have completed treatment in a Global Blood Therapeutics (GBT)-sponsored voxelotor pediatric clinical study, based on the following parameters: • Adverse events (AEs), clinical laboratory tests, physical examinations, and other clinical measures • Frequency of SCD-related complications;Secondary Objective: n/a;Primary end point(s): Safety • TEAEs and SAEs Sickle Cell Disease–Related Complications • Frequency of SCD-related complications;Timepoint(s) of evaluation of this end point: All participants who receive at least 1 dose of study drug in this study will be included in the safety population. Clinical laboratory test and vital sign results over time will be summarized using descriptive statistics. SCD-related complications over the course of the treatment period will be recorded for each participant.

Secondary

MeasureTime frame
Secondary end point(s): n/a;Timepoint(s) of evaluation of this end point: n/a

Countries

Lebanon, United Kingdom, United States

Contacts

Public ContactClinical Trial Manager

Global Blood Therapeutics, Inc.

aenriquez@gbt.com

Outcome results

None listed

Source: EU CTR (via WHO ICTRP) · Data processed: Feb 4, 2026