Evaluating the Efficacy and Safety of Metformin in Vitiligo

Withdrawn before enrolling · Phase 2

Conditions studied: Vitiligo

In brief

Metformin modulates metabolism in multiple cell types and is currently used to reduce glucose levels and insulin resistance in diabetic patients. The investigators hypothesize that oral metformin can regulate the metabolism of CD8+ T cells, reduce their cytotoxic activity and thus serve as a novel treatment for vitiligo.

Key facts

Study ID

NCT05607316

Run by

University of Massachusetts, Worcester

People needed

0

Starts

2025-07-01

Expected to finish

2028-11-01

Last updated by the study team

2024-09-24

Who can join

Age: 18 and older. Sex: any. Healthy volunteers: not accepted.

You may qualify if…

• Adults 18 years - 100 years of age with stable vitiligo
• Stable vitiligo is defined as no new spots of depigmentation or expansion of any existing spots for one year;
• Total body surface area BSA >/= 1%
• Facial body surface area BSA >/= 0.25%
• Willingness to participate in the study;
• Willingness to undergo suction blistering;
• Non-English speaking adults may be enrolled with the assistance of an interpreter and the use of an IRB-approved short form in the subject's language;
• Informed consent document signed by the subject;

You may not qualify if…

• Adults unable to consent (adults lacking capacity);
• Active vitiligo defined by presence of confetti lesions, trichrome lesions, and Koebner's phenomenon;
• Individuals who are not yet adults (infants, children, teenagers);
• Pregnant women and/or breastfeeding, or those who have recently delivered a baby within the past 6 months;
• Prisoners;
• Systemic immunosuppressive medication (oral corticosteroids) within prior 4 weeks;
• Topical steroids within the prior 2 weeks;
• Currently undergoing UVB light therapy or history of light therapy within the past 8 weeks;
• Unable to return for follow-up visits;
• Enrolled in a clinical study of any other investigational drug or device;
• Diabetes, liver disease, or kidney disease;
• Hypoglycemia as defined by fasting blood glucose <70 mg/dL assessed at a fasting study visit;
• Prescription medication or cosmetics containing: retinoids, glycolic acid, salicylic acid, or any other remedies that might affect the healing process. Non-medicated moisturizers are allowed. If the person is unsure, they can bring in any products for our review;
• Self-reported history of chronic alcohol or drug abuse within 12 months prior to screening, or any condition associated with poor compliance as judged by the investigator;
• Any other condition or laboratory value that would, in the professional opinion of the investigators, potentially affect the subject's response or the integrity of the data or would pose an unacceptable risk to the subject.

Where it is running

• UMass Chan Medical School — Worcester, Massachusetts, United States

Full record on ClinicalTrials.gov

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