A Phase I Study to Evaluate the Safety and Tolerability of Escalating Doses of Fostamatinib in Subjects With Stable Sickle Cell Disease
National Heart, Lung, and Blood Institute (NHLBI)
Summary
Background: Sickle cell disease (SCD) is a genetic disease that causes the body to produce abnormal ( sickled ) red blood cells. SCD can cause anemia and life-threatening complications in the lungs, heart, kidney, and nerves. People with SCD are also at increased risk of forming blood clots in the veins and lungs, but the standard treatments for these clots can cause increased bleeding in people with SCD. Better treatments are needed. Objective: To test a drug (fostamatinib) in people with SCD. Eligibility: People aged 18 to 65 with SCD. Design: Participants will have 6 clinic visits over 12 weeks. Each visit will be 2 to 3 hours. Participants will be screened. They will have a physical exam with blood tests. They will tell the researchers about the medications they take. Fostamatinib is a tablet taken by mouth. Participants will take the drug at home, twice a day, for up to 6 weeks. Participants will have a clinic visit every 2 weeks while they are taking the drug. At each visit they will have a physical exam with blood tests. They will talk about any side effects the drug may be causing. If they are tolerating the drug well after the first 2 weeks, they may begin taking a higher dose. Participants will have a final visit 4 weeks after they stop taking the drug. They will have a physical exam and blood tests; they will be checked for any side effects of the drug.
Description
Study Description: The overall objective of this study is to assess the clinical safety and tolerability of fostamatinib in subjects with stable sickle cell disease (SCD). Subjects enrolled will receive fostamatinib 100 mg orally twice daily (BID) for 2 weeks then escalate to 150 mg orally BID for an additional four weeks. Throughout the course of the study subjects will be monitored for signs and symptoms of adverse events. The effect of fostamatinib on laboratory biomarkers of thromboinflammatory activity and red blood cell metabolism will be studied at specified timepoints. Objectives: Pr…
Eligibility
- Age range
- 18–65 years
- Sex
- All
- Healthy volunteers
- Yes
* INCLUSION CRITERIA: Subjects will enroll onto the study and undergo screening. Subjects who do not meet any of the following criteria during screening will not receive the study intervention but will be counted toward study accrual. Screen failures may be rescreened at a later time. In order to be eligible to participate in this study, an individual must meet all of the following criteria: 1. Have provided signed written informed consent prior to performing any study procedure, including screening procedures. 2. Age between 18-65 years 3. Unequivocal diagnosis of SCA (HbSS or HbSBeta\^0) c…
Interventions
- DrugFostamatinib
Fostamatinib will be administered orally, at a dose of 100 mg twice a day for 14 days and if tolerated, will be escalated to a dose of 150 mg, orally, twice a day for 28 days (total 42 days).
Location
- National Institutes of Health Clinical CenterBethesda, Maryland