Taubman Emerging Scholar's research leads to better bone marrow transplant outcomes

Improving the results of bone marrow transplants in people with cancer is the quest of Sung Won Choi, M.D., a Taubman Emerging Scholar, oncologist and assistant professor of pediatrics at the University of Michigan Medical School.

And newly published results of Dr. Choi's work suggest that a treatment she and other U-M researchers tested in patients can drastically cut the risk of graft-vs.-host disease, a deadly side effect of the potentially life-saving bone marrow transplants.

The study, the first to test this treatment in people, combined the drug vorinostat with standard medications given after transplant, resulting in 22 percent of patients developing graft-vs.-host disease compared to 42 percent of patients who typically develop this condition with standard medications alone. Results of the study appear in The Lancet Oncologygoing to a new website.

"Graft-vs.-host disease is the most serious complication from transplant that limits our ability to offer it more broadly. Current prevention strategies have remained mostly unchanged over the past 20 years. This study has us cautiously excited that there may be a potential new way to prevent this condition," says Choi, whose research is supported in part by an annual Emerging Scholars Grant from the A. Alfred Taubman Medical Research Institute.

Vorinostat is currently approved by the U.S. Food and Drug Administrationgoing to a new website to treat certain types of cancer. But U-M researchers, led by senior study author Pavan Reddy, M.D.going to a new website, found in laboratory studies that the drug had anti-inflammatory effects as well -- which they hypothesized could be useful in preventing graft-vs.-host disease, or GVHD, a condition in which the new donor cells begin attacking other cells in the patient's body.

The study enrolled 61 older adults from the University of Michigan and Washington University in St. Louis who were undergoing a reduced-intensity bone marrow transplant with cells donated from a relative. Patients received standard medication used after a transplant to prevent GVHD. They also received vorinostat, which is given as a pill taken orally. Fifty of the 61 participants completed the full 21-day course of vorinostat.

The researchers found vorinostat was safe and tolerable to give to this vulnerable population, with manageable side effects. In addition, rates of patient death and cancer relapse among the study participants were similar to historical averages.

The results mirror those found in the laboratory using mice. Reddy, the Moshe Talpaz Professor of Oncology and professor of internal medicine at the U-M Medical School, has been studying this approach in the lab for eight years.

"This is an entirely new approach to preventing graft-vs.-host disease," Reddy says. Specifically, vorinostat targets histone deacetylases, which are different from the usual molecules targeted by traditional treatments.

"Vorinostat has a dual effect as an anti-cancer and an anti-inflammatory agent. That's what’s potentially great about using it to prevent graft-vs.-host, because it may also help prevent the leukemia from returning," says Reddy, who is also co-director of the hematologic malignancies and bone marrow transplant program at the U-M Comprehensive Cancer Center.

"We are encouraged by our findings," Choi says. "Vorinostat combined with standard graft-vs.-host disease prophylaxis after related-donor transplant appears to be safe and associated with lower than expected incidence of acute GVHD. Future studies are needed to assess the effect of vorinostat in broader transplant settings. We are currently investigating vorinostat plus standard therapies to prevent GVHD in transplants with an unrelated donor."

For information about this clinical trial, call the U-M Cancer AnswerLine™ at 800-865-1125.

Source: The University of Michigan Health System

 


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