Topical curcumin (VAS-101) for sickle cell disease: escalating doses tested
Official title: A Phase 1 Study to Evaluate the Safety and Tolerability of Escalating Doses of VAS-101 in Subjects With Stable Sickle Cell Disease
Run by National Institutes of Health Clinical Center (CC) · NCT07566494 · Data updated 2026-11-12
We are testing whether a skin gel containing curcumin can be safely used in adults with stable sickle cell disease to improve how red blood cells function.
Quick facts
| Phase | Phase 1 |
|---|---|
| Study type | Interventional |
| Ages | 18 Years to 90 Years |
| Sex | All |
| Enrollment | 25 (estimated) |
| Sponsor | National Institutes of Health Clinical Center (CC) NIH |
| Drugs / interventions | crizanlizumab |
| Locations | 1 site (Bethesda, Maryland) |
| Status | Recruiting |
| Started | July 31, 2026 |
| Main results expected | April 27, 2027 |
| Study ends | April 27, 2027 |
| Registry record updated | October 21, 2026 |
| Trial ID | NCT07566494 on ClinicalTrials.gov |
Is this trial a fit for you?
✓Likely a good fit
Adults aged 18 to 70 with a confirmed, stable diagnosis of sickle cell disease (HbSS, HbSC, HbSbeta+ or HbSbeta0).
✕Probably not a fit
Patients who do not have stable disease or who do not tolerate the gel may not experience benefit.
A plain-English reading of the study's rules. Only the study team can confirm whether you qualify.
What this trial studies
This early-phase study will test safety and tolerability of escalating doses of VAS-101, a transdermal curcuminoid gel, in adults with stable sickle cell disease. Participants will have up to 15 clinic visits over about 14 weeks, with possible short hospital stays for blood sampling after gel application. The study will also measure laboratory markers of inflammation, red cell metabolism, and deformability to explore potential effects of the gel. Primary goals are safety and tolerability, with secondary aims to characterize pharmacokinetics and dose–response relationships, and exploratory aims to look at immune and blood cell functions. The gel is applied twice weekly with gradually increasing volumes across the dosing period.
Why it matters
Potential benefit: If successful, VAS-101 could offer a new, non-oral method to improve blood cell function and reduce inflammation in sickle cell disease.
How similar studies have gone: Transdermal delivery of curcuminoids is being explored in other conditions, with early safety data supporting further investigation; this trial focuses on SCD.
Who can join: the full rules
Show full inclusion / exclusion criteria
* 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: * Have provided signed written informed consent prior to performing any study procedure, including screening procedures. * Age between 18-70 years. Adults over 70 years of age will be excluded from this study due to an increased risk of more severe disease and higher prevalence of multiple comobodities. * Unequivocal diagnosis of SCD (HbSS, HbSC, HbSbeta+ or HbSbeta\^0) confirmed by hemoglobin electrophoresis performed on patients at least 60 days after a blood transfusion if previously transfused. * No transfusion in the 60 days prior to signing consent, or absence of Hb A on hemoglobin analysis (by high-performance liquid chromatography; HPLC) * Serum aspartate aminotransferase (AST) \<= 1.5 x Upper Limit of Normal (ULN) (unless the increased AST is assessed by the Investigator as due to hemolysis) and alanine aminotransferase (ALT) \<=1.5 x ULN. * Hemoglobin \>= 7 g/dL * Serum creatinine \<=1.25 x ULN. If serum creatinine is \>1.25 x ULN, then glomerular filtration rate (based on creatinine) must be \>=60 mL/min. * If on hydroxyurea, participant must have been on stable dose of hydroxyurea (defined as a stable dose for at least 90 days and inclusive of dose modifications for hematological toxicity per PI discretion) prior to signing consent. * If on L-glutamine and/or crizanlizumab, participant must have been on a stable dose for ast least 90 days prior to signing consent. * Agree to abstain from taking any other products/supplements containing turmeric or curcumin until all study visits have been completed (oral, topical, etc.) * For women of reproductive potential, have a negative serum pregnancy test during the screening period. Women of reproductive potential are defined as sexually mature women who have not undergone a hysterectomy, bilateral oophorectomy, or tubal occlusion; or who have not been naturally postmenopausal (i.e., who have not menstruated at all for at least the preceding 1 year prior to signing informed consent unrelated to hormonal contraception). * Women of reproductive potential be abstinent as part of their usual lifestyle, or agree to use 2 effective forms of contraception from the time of giving informed consent, during the study, and for 28 days following the last dose of study treatment. An effective form of contraception is defined as hormonal oral contraceptives, injectables, patches, intrauterine or subdermal contraceptive implants, and barrier methods. * Be willing to comply with all study procedures for the duration of the study. EXCLUSION CRITERIA: An individual who meets any of the following criteria will be excluded from participation in this study: * Vaso-occlusive crisis requiring parenteral treatment within 14 days of signing consent. * Three or more vaso-occlusive crises in the 12 months prior to screening that resulted in receiving treatment in an urgent care, outpatient infusion center/day-clinic, emergency department or inpatient setting. * Have a significant medical condition that confers an unacceptable risk to participating in the study, and/or that could confound the interpretation of the study data. Such significant medical conditions include, but are not limited to the following: * Poorly controlled hypertension (defined as systolic blood pressure \[BP\] \>150 mmHg or diastolic BP \>90 mmHg) refractory to medical management. * History of recent (within 24 weeks prior to signing consent) decompensated congestive heart failure; myocardial infarction or unstable angina pectoris; hemorrhagic, embolic, or thrombotic stroke; deep venous thrombosis; or pulmonary or arterial embolism. * Clinically symptomatic cholelithiasis or cholecystitis. Prior cholecystectomy is not exclusionary. Subjects with symptomatic cholelithiasis or cholecystitis may be rescreened once the disorder has been treated and clinical symptoms have resolved. * History of drug-induced cholestatic hepatitis. * Iron overload sufficiently severe to result in a clinical diagnosis by the Investigator of cardiac (e.g., clinically significant impaired left ventricular ejection fraction), hepatic (e.g., fibrosis, cirrhosis), or pancreatic (e.g., diabetes) dysfunction. * Positive test for hepatitis B surface antigen or hepatitis C virus (HCV) antibody (Ab) with signs of active hepatitis B or C virus infection. If the subject is positive for HCVAb, a reverse transcriptase-polymerase chain reaction test will be conducted. Subjects with hepatitis C may be rescreened after receiving appropriate hepatitis C treatment. * Active infection requiring any use of systemic antimicrobial agents (parenteral or oral) or Grade \>=3 in severity (per National Cancer Institute Common Terminology Criteria for Adverse Events) within 4 weeks prior to signing consent. * Diabetes mellitus judged to be under poor control by the Investigator or requiring \>3 antidiabetic agents, including insulin (all insulins are considered 1 agent); use of insulin per se is not exclusionary. * History of any primary malignancy, with the exception of: curatively treated nonmelanomatous skin cancer; curatively treated cervical or breast carcinoma in situ; or other primary tumor treated with curative intent, no known active disease present, and no treatment administered during the last 3 years. * Current or recent history of psychiatric disorder that, in the opinion of the Investigator or Medical Monitor, could compromise the ability of the subject to cooperate with study visits and procedures. * Have had a prior bone marrow or stem cell transplant. * Are currently enrolled in another therapeutic clinical trial involving ongoing therapy with any investigational or marketed product or placebo. * Taking nitroglycerin, or any other nitrate-enhancing drug. * Have exposure to any investigational drug, device, or invasive procedure within 12 weeks prior to signing consent. All non-investigational invasive procedures within 12 weeks of signing consent may be considered as a potential exclusion criteria per the PI's discretion. * Currently pregnant or breastfeeding. * Currently receiving hematopoietic stimulating agents (e.g., erythropoietins, granulocyte colony stimulating factors, thrombopoietins) that have not been stopped for a duration of at least 90 days prior to signing consent. * Have a history of allergy to turmeric, curcuminoids, or formulations thereof.
Where it's running
-
National Institutes of Health Clinical Center
Bethesda, Maryland, United States Recruiting
Study contacts
- Principal investigator: Swee Lay Thein, M.D. — National Heart, Lung, and Blood Institute (NHLBI)
- Study coordinator: Jordan B Branch
- Email: jordan.branch@nih.gov
- Phone: (301) 221-3820
Similar studies
Other studies for the same condition or treatment. Recruiting studies are listed first.
-
VLCPUFA-rich fish oil and standard DHA oil: who reaches a higher omega-3 index?
This study tests whether VLCPUFA-rich fish oil raises the blood omega-3 index more than a standard DHA-rich fish oil in healthy adults aged 18–60.
-
Blood biomarkers for immune-related neuropsychiatric conditions
This study tests whether blood biomarkers can help identify neuropsychiatric disorders that may be linked to the immune system in people of any age.
-
First-in-human imaging of PDE4D with [11C]JMJ-129-d2 in healthy volunteers
A new PET tracer called [11C]JMJ-129-d2 is being tested in healthy adults to see if it safely and reliably images the brain’s PDE4D enzyme and to measure how the tracer distributes in the body.
-
Pain patterns in rheumatic diseases: see if pain works differently in patients and healthy people
This observational study tests how pain is experienced and measured in people with rheumatic diseases compared with healthy volunteers.
-
Augmenting Parent Management Training with a Smartphone Tool
This study tests whether adding a smartphone app to parent management training helps reduce irritability and temper outbursts in kids aged 8–13 with disruptive behavior disorders.
-
How healthy adults look at faces and other images with their eyes
This study tests how healthy adults direct their gaze and pay attention to visual images, including faces, to see how basic visual features influence eye movements.
How to take part
- Review the eligibility criteria above with your treating physician.
- Check the official listing on ClinicalTrials.gov for the latest contact details and recruitment status.
- Contact the study coordinator or principal investigator to ask for pre-screening. Pre-screening is free and never obligates you to enroll.