Skip to main content
An official website of the United States government

Immunotherapy (Pembrolizumab or Nivolumab) with Metformin or Rosiglitazone for the Treatment of Advanced Solid Tumors

Trial Status: active

This phase II trial studies the effects of immunotherapy (pembrolizumab or nivolumab) alone, in combination with metformin, or in combination with rosiglitazone in treating malignant solid tumors that have spread to other parts of the body (advanced). Comparing the immune system to a car, there are two ways to make a car go faster. One is to press on the gas pedal and the other is to take the foot of the brake. The immune system has many “gas pedals” and “brakes” in order to help it decide whether to attack or not attack abnormal cells. Pembrolizumab and nivolumab are antibodies (a type of protein) that work by blocking a “brake” (akin to taking the foot off the brake in the car) on the immune system cells which may help the immune system attack the cancer. Metformin and rosiglitazone may change the amount of oxygen that is available to the immune system that is trying to attack the cancer. This allows the immune system to be more active. The purpose of this trial is to determine whether the addition of rosiglitazone or metformin to standard of care immunotherapy can cause cancer to respond (shrink in size) more than with immunotherapy alone.