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Hemoglobin Modifiers

Voxelotor for Sickle Cell Disease

Phase 4
Waitlist Available
Research Sponsored by Pfizer
Eligibility Criteria Checklist
Specific guidelines that determine who can or cannot participate in a clinical trial
Must have
Aged 12 to 30 years.
Male or female participants with confirmed diagnosis of SCD with HbSS or Hbβ0 thalassemia genotype. Documentation of SCD genotype is required.
Timeline
Screening 3 weeks
Treatment Varies
Follow Up baseline to week 24
Awards & highlights

Study Summary

This trial tests if a drug can improve blood flow & brain function in adolescents & young adults with SCD.

Who is the study for?
Adolescents and young adults aged 12-30 with sickle cell disease (SCD) can join this trial. They must have stable treatment histories if on hydroxyurea or erythropoiesis-stimulating agents, a specific hemoglobin level, and be able to undergo MRI scans and answer questions in English. Participants need to use effective contraception methods during the study.Check my eligibility
What is being tested?
The trial is testing Voxelotor Oral Tablet's effects on brain blood flow and thinking skills in SCD patients. It's an open-label study where all participants receive the drug; there’s no comparison group.See study design
What are the potential side effects?
Potential side effects of Voxelotor include headache, diarrhea, abdominal pain, nausea, fatigue, rash and dizziness. However, individual experiences may vary.

Eligibility Criteria

Inclusion Criteria

You may be eligible if you check “Yes” for the criteria below
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I am between 12 and 30 years old.
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I have sickle cell disease with HbSS or Hbβ0 thalassemia genotype.
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I have been on a stable dose of ESAs for at least 12 weeks with no changes expected.

Timeline

Screening ~ 3 weeks
Treatment ~ Varies
Follow Up ~baseline to week 24
This trial's timeline: 3 weeks for screening, Varies for treatment, and baseline to week 24 for reporting.

Treatment Details

Study Objectives

Outcome measures can provide a clearer picture of what you can expect from a treatment.
Primary outcome measures
Core-Binding Factor
Secondary outcome measures
Change in executive functioning.
Change in nonexecutive functioning
Change in processing speed
Other outcome measures
Change in HRQOL scores
Change in HRQOL scores using Clinician Global Impression of Severity.
Change in Hb and hemolysis over time
+9 more

Trial Design

1Treatment groups
Experimental Treatment
Group I: Active DrugExperimental Treatment1 Intervention
Generic Name: Voxelotor Dosage Form: tablet Dosage: 1500mg Frequency: QD Duration: 24 weeks

Find a Location

Who is running the clinical trial?

PfizerLead Sponsor
4,567 Previous Clinical Trials
10,911,874 Total Patients Enrolled
Global Blood TherapeuticsLead Sponsor
35 Previous Clinical Trials
4,877 Total Patients Enrolled
Pfizer CT.gov Call CenterStudy DirectorPfizer
3,474 Previous Clinical Trials
8,093,042 Total Patients Enrolled

Media Library

Voxelotor Oral Tablet (Hemoglobin Modifiers) Clinical Trial Eligibility Overview. Trial Name: NCT05228821 — Phase 4
Sickle Cell Disease Research Study Groups: Active Drug
Sickle Cell Disease Clinical Trial 2023: Voxelotor Oral Tablet Highlights & Side Effects. Trial Name: NCT05228821 — Phase 4
Voxelotor Oral Tablet (Hemoglobin Modifiers) 2023 Treatment Timeline for Medical Study. Trial Name: NCT05228821 — Phase 4

Frequently Asked Questions

These questions and answers are submitted by anonymous patients, and have not been verified by our internal team.

To what extent could Active Drug pose a risk to those who use it?

"Because this treatment is approved, our assessment of the safety of Active Drug was a 3 on a 1 to 3 scale."

Answered by AI

Can subjects still join this research endeavor?

"The current recruitment status is active, as reflected on clinicaltrials.gov. An initial posting date of August 9th 2023 and a last updated date of August 23rd 2023 can be found there."

Answered by AI

Does the qualification criteria for this research involve an age limit of 45 years or younger?

"This trial is only available to those aged 12-30, however there are 120 clinical trials that accept applicants under the age of 18 and 79 for individuals over 65."

Answered by AI

What is the number of individuals that have opted into this research project?

"Affirmative. According to the information available from clinicaltrials.gov, this investigation is currently enrolling participants that were first published on August 9th of 2023 and has been updated recently on August 23rd. 24 individuals are being sought out over 2 research sites for participation in the trial."

Answered by AI

What criteria must be met in order to participate in this clinical trial?

"This medical trial is looking to enrol 24 participants between 12 and 30 years old, suffering from sickle cell disease. To be eligible for this study, the individual must conform to these requirements: Male or female with HbSS/Hbβ0 thalassemia genotype; haemoglobin level ranging from 5.5-10.5 g/dL; capability of MRI scans; no dose alteration in hydroxyurea/erythropoiesis-stimulating agents (ESAs) for 90 days/12 weeks respectively before enrollment; highly effective contraception methods if female or barrier contraception if male during drug administration period & up"

Answered by AI
~0 spots leftby Apr 2025