Safety, Tolerability, Pharmacokinetics, and Pharmacodynamics of Long-term Mitapivat Dosing in Subjects With Stable Sickle Cell Disease: An Extension of a Phase I Pilot Study of Mitapivat

Part of paid clinical trials in Bethesda, Maryland.

Sponsor
National Heart, Lung, and Blood Institute (NHLBI)
Study ID
NCT04610866
Phase
PHASE1/PHASE2
Status
Active Not Recruiting

Conditions

Eligibility Criteria

Sex
ALL
Age
18 Years - 70 Years
Healthy Volunteers
Not accepted

Interventions

  • Mitapivat — DRUG
    Investigational drug mitapivat (also known as AG-348, AGI-1480 and AGX-0841) is an orally bioavailable, broad-spectrum allosteric activator of alleles of the RBC-specific form of pyruvate kinase (PKR), as well as liver-type pyruvate kinase (PKL) and muscle pyruvate kinase (PKM1 and PKM2).

Study Details

Background: Sickle cell disease (SCD) is a disorder that causes episodes of acute pain and progressive organ damage. Ways to manage SCD have evolved slowly. Treatments do not always work. Researchers want to see if a drug called mitapivat can help people with SCD. Objective: To test the long-term tolerability and safety of mitapivat (or AG-348) in people with SCD. Eligibility: Adults age 18-70 with SCD who took part in and benefited from NIH study #19H0097. Design: Participants will be screened with a medical history and physical exam. They will give a blood sample. They will have an electrocardiogram to test heart function. Participants will repeat some of the screening tests during the study. Participants will complete 6-minute walk tests to measure mobility and function. They will have transthoracic echocardiograms to measure heart and lung function. They will have dual-energy X-ray absorptiometry scans to measure bone health. They will complete online questionnaires that measure their overall health and well-being. Participants will take the study drug in the form of a tablet twice a day. Participants will keep a study diary. They will record any symptoms they may have. Participation will last for about 54 weeks. After 48 weeks, participants can either keep taking the study drug for 48 more weeks or be tapered off of the study drug to complete the study. Those who are on the study for 1 year will have 10 study visits. Those who are on the study for 2 years will have 14 study visits.

Key Dates

Start date
Dec 9, 2020
Status verified
Apr 2026
Primary completion
Feb 28, 2028
Completion
Feb 28, 2028

Study Design

Enrollment
15 participants (actual)
Allocation
NON_RANDOMIZED
Intervention model
SEQUENTIAL
Primary purpose
TREATMENT

Arms

  • Experimental: 1
    Subjects will be treated with a maintenance dose of mitapivat previously assessed for safety and tolerability in the Phase I study for an initial 48 weeks and undergo safety monitoring, evaluation of pharmacokinetics and pharmacodynamics, and assessment of secondary laboratory and clinical endpoints at pre-specified intervals during the study period.

Primary Outcome Measure

Primary outcome measure: Long-term safety and tolerability of mitapivat in subjects with stable sickle cell disease [ Time Frame: 48 weeks ]

Locations (1)

FacilityCityStateZIPSite coordinators
National Institutes of Health Clinical CenterBethesdaMaryland20892-

Find similar trials in Bethesda, MD

By condition
Sickle cell disease
By research site
National Institutes of Health Clinical Center· Bethesda, MD

Related Studies