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Open-Label Extension of Voxelotor

Primary Purpose

Sickle Cell Disease

Status
Recruiting
Phase
Phase 3
Locations
International
Study Type
Interventional
Intervention
Voxelotor
Sponsored by
Pfizer
About
Eligibility
Locations
Arms
Outcomes
Full info

About this trial

This is an interventional treatment trial for Sickle Cell Disease

Eligibility Criteria

6 Months - 18 Years (Child, Adult)All SexesDoes not accept healthy volunteers

Inclusion Criteria:

  • Male or female participant with SCD, who participated and received study drug in a GBT-sponsored voxelotor clinical study
  • 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) or consent

Exclusion Criteria:

  • Female participant who is breastfeeding or pregnant
  • Participant withdrew consent from a GBT-sponsored voxelotor clinical study
  • Known hypersensitivity to voxelotor or any other components of the study drug
  • Use of St. John's wort, sensitive cytochrome P450 (CYP) 3A4 substrates with a narrow therapeutic index, or moderate or strong CYP3A4 inducers within 30 days of Day 1

Sites / Locations

  • Children's National Medical Center
  • Children's Healthcare of Atlanta Scottish Rite
  • Ann & Robert H. Lurie Children's Hospital of ChicagoRecruiting
  • Children's Mercy Hospital
  • ECU Physicians, Brody Outpatient ClinicRecruiting
  • UPMC Children's Hospital of Pittsburgh
  • American University of Beirut - Medical CenterRecruiting
  • Nini HospitalRecruiting
  • University College Hospital Paediatric Haematology and Oncology UnitRecruiting
  • Barau Dikko Teaching Hospital/Kaduna State UniversityRecruiting
  • Aminu Kano Teaching HospitalRecruiting
  • Lagos University Teaching HospitalRecruiting
  • University College Hospital NHS Foundation TrustRecruiting
  • Barts Health NHS Trust , The Royal London HospitalRecruiting
  • Guy's & St Thomas NHS Trust, St Thomas' HospitalRecruiting

Arms of the Study

Arm 1

Arm Type

Experimental

Arm Label

Voxelotor

Arm Description

All participants will receive voxelotor once daily (QD), administered orally as tablets, dispersible tablets, or a stick pack formulation (powder blend formulation packaged as stick packs). Participants aged ≥ 12 years and/or ≥ 40 kgs will receive a voxelotor dose of 1500 mg QD. Participants aged < 12 years and < 40 kgs will receive weight based dosing of voxelotor. The participant's weight at study entry will be used to determine the starting voxelotor dose in this study. Participants may receive study drug as long they continue to receive clinical benefit that outweighs risk as determined by the investigator and/or until the participant has access to voxelotor from an alternative source.

Outcomes

Primary Outcome Measures

TEAEs and SAEs
Treatment Emergent Adverse Events and Serious Adverse Events
Sickle Cell Disease-Related Complications
Frequency of SCD-related complications

Secondary Outcome Measures

Full Information

First Posted
December 3, 2019
Last Updated
September 11, 2023
Sponsor
Pfizer
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1. Study Identification

Unique Protocol Identification Number
NCT04188509
Brief Title
Open-Label Extension of Voxelotor
Official Title
An Open-Label Extension Study of Voxelotor Administered Orally to Pediatric Participants With Sickle Cell Disease Who Have Participated in Voxelotor Clinical Trials
Study Type
Interventional

2. Study Status

Record Verification Date
September 2023
Overall Recruitment Status
Recruiting
Study Start Date
November 18, 2019 (Actual)
Primary Completion Date
March 4, 2028 (Anticipated)
Study Completion Date
March 4, 2028 (Anticipated)

3. Sponsor/Collaborators

Responsible Party, by Official Title
Sponsor
Name of the Sponsor
Pfizer

4. Oversight

Studies a U.S. FDA-regulated Drug Product
Yes
Studies a U.S. FDA-regulated Device Product
No
Data Monitoring Committee
No

5. Study Description

Brief Summary
Open-label extension study of voxelotor for participants with Sickle Cell Disease who have participated in voxelotor clinical trials.
Detailed Description
Open-label extension (OLE) study of voxelotor for participants with Sickle Cell Disease who have participated in voxelotor clinical trials. Up to approximately 600 participants with sickle cell disease (SCD), will be enrolled at approximately 70 clinical sites globally. All participants will receive voxelotor once daily, administered orally as tablets, dispersible tablets, or powder for oral suspension formulation. The objective of this OLE is to assess the safety of, and SCD-related complications of, long-term treatment with voxelotor, in participants who have completed treatment in a Global Blood Therapeutics (GBT)-sponsored voxelotor clinical study.

6. Conditions and Keywords

Primary Disease or Condition Being Studied in the Trial, or the Focus of the Study
Sickle Cell Disease

7. Study Design

Primary Purpose
Treatment
Study Phase
Phase 3
Interventional Study Model
Single Group Assignment
Model Description
Open-Label Extension study available to eligible participants from GBT-sponsored voxelotor clinical studies.
Masking
None (Open Label)
Allocation
N/A
Enrollment
300 (Anticipated)

8. Arms, Groups, and Interventions

Arm Title
Voxelotor
Arm Type
Experimental
Arm Description
All participants will receive voxelotor once daily (QD), administered orally as tablets, dispersible tablets, or a stick pack formulation (powder blend formulation packaged as stick packs). Participants aged ≥ 12 years and/or ≥ 40 kgs will receive a voxelotor dose of 1500 mg QD. Participants aged < 12 years and < 40 kgs will receive weight based dosing of voxelotor. The participant's weight at study entry will be used to determine the starting voxelotor dose in this study. Participants may receive study drug as long they continue to receive clinical benefit that outweighs risk as determined by the investigator and/or until the participant has access to voxelotor from an alternative source.
Intervention Type
Drug
Intervention Name(s)
Voxelotor
Other Intervention Name(s)
GBT440
Intervention Description
All participants will receive voxelotor once daily (QD), administered orally as tablets, dispersible tablets, or a powder for oral suspension formulation (powder formulation packaged as stick packs).
Primary Outcome Measure Information:
Title
TEAEs and SAEs
Description
Treatment Emergent Adverse Events and Serious Adverse Events
Time Frame
Throughout entire study
Title
Sickle Cell Disease-Related Complications
Description
Frequency of SCD-related complications
Time Frame
Throughout entire study

10. Eligibility

Sex
All
Minimum Age & Unit of Time
6 Months
Maximum Age & Unit of Time
18 Years
Accepts Healthy Volunteers
No
Eligibility Criteria
Inclusion Criteria: Male or female participant with SCD, who participated and received study drug in a GBT-sponsored voxelotor 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. Note: Participants who discontinued Study GBT440-032 as the result of an abnormal transcranial Doppler (TCD) flow velocity assessment (≥ 200 cm/sec) are eligible for treatment in this study. - Participant has provided written consent/assent (for pediatric participants, both the consent of the participant's legal representative or legal guardian and the participant's assent [where applicable] must be obtained). Exclusion Criteria: Female participant who is breastfeeding or pregnant Participant withdrew consent from a GBT-sponsored voxelotor clinical study Known hypersensitivity to voxelotor or any other components of the study drug Use of St. John's wort, sensitive cytochrome P450 (CYP) 3A4 substrates with a narrow therapeutic index, or moderate or strong CYP3A4 inducers within 30 days of Day 1
Central Contact Person:
First Name & Middle Initial & Last Name or Official Title & Degree
Pfizer CT.gov Call Center
Phone
1-800-718-1021
Email
ClinicalTrials.gov_Inquiries@pfizer.com
Overall Study Officials:
First Name & Middle Initial & Last Name & Degree
Pfizer CT.gov Call Center
Organizational Affiliation
Pfizer
Official's Role
Study Director
Facility Information:
Facility Name
Children's National Medical Center
City
Washington
State/Province
District of Columbia
ZIP/Postal Code
20010
Country
United States
Individual Site Status
Active, not recruiting
Facility Name
Children's Healthcare of Atlanta Scottish Rite
City
Atlanta
State/Province
Georgia
ZIP/Postal Code
30342
Country
United States
Individual Site Status
Active, not recruiting
Facility Name
Ann & Robert H. Lurie Children's Hospital of Chicago
City
Chicago
State/Province
Illinois
ZIP/Postal Code
60611
Country
United States
Individual Site Status
Recruiting
Facility Name
Children's Mercy Hospital
City
Kansas City
State/Province
Missouri
ZIP/Postal Code
64108
Country
United States
Individual Site Status
Active, not recruiting
Facility Name
ECU Physicians, Brody Outpatient Clinic
City
Greenville
State/Province
North Carolina
ZIP/Postal Code
27834
Country
United States
Individual Site Status
Recruiting
Facility Name
UPMC Children's Hospital of Pittsburgh
City
Pittsburgh
State/Province
Pennsylvania
ZIP/Postal Code
15224
Country
United States
Individual Site Status
Active, not recruiting
Facility Name
American University of Beirut - Medical Center
City
Beirut
Country
Lebanon
Individual Site Status
Recruiting
Facility Name
Nini Hospital
City
Tripoli
Country
Lebanon
Individual Site Status
Recruiting
Facility Name
University College Hospital Paediatric Haematology and Oncology Unit
City
Ibadan
State/Province
OYO State
ZIP/Postal Code
200281
Country
Nigeria
Individual Site Status
Recruiting
Facility Name
Barau Dikko Teaching Hospital/Kaduna State University
City
Kaduna
ZIP/Postal Code
800212
Country
Nigeria
Individual Site Status
Recruiting
Facility Name
Aminu Kano Teaching Hospital
City
Kano
ZIP/Postal Code
700233
Country
Nigeria
Individual Site Status
Recruiting
Facility Name
Lagos University Teaching Hospital
City
Lagos
ZIP/Postal Code
100254
Country
Nigeria
Individual Site Status
Recruiting
Facility Name
University College Hospital NHS Foundation Trust
City
London
State/Province
Greater London
ZIP/Postal Code
NW1 2PG
Country
United Kingdom
Individual Site Status
Recruiting
Facility Name
Barts Health NHS Trust , The Royal London Hospital
City
London
ZIP/Postal Code
E1 1BB
Country
United Kingdom
Individual Site Status
Recruiting
Facility Name
Guy's & St Thomas NHS Trust, St Thomas' Hospital
City
London
ZIP/Postal Code
SE1 7EH
Country
United Kingdom
Individual Site Status
Recruiting

12. IPD Sharing Statement

Plan to Share IPD
Yes
IPD Sharing Plan Description
Pfizer will provide access to individual de-identified participant data and related study documents (e.g. protocol, Statistical Analysis Plan (SAP), Clinical Study Report (CSR)) upon request from qualified researchers, and subject to certain criteria, conditions, and exceptions. Further details on Pfizer's data sharing criteria and process for requesting access can be found at: https://www.pfizer.com/science/clinical_trials/trial_data_and_results/data_requests.
IPD Sharing URL
https://www.pfizer.com/science/clinical_trials/trial_data_and_results/data_requests
Links:
URL
https://pmiform.com/clinical-trial-info-request?StudyID=GBT440-038
Description
To obtain contact information for a study center near you, click here.

Learn more about this trial

Open-Label Extension of Voxelotor

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