Between 20 and 50 percent of patients transplanted with donor cells develop graft-versus-host disease after transplant. By supporting The Meredith A. Cowden Foundation, you bring lasting change around the world by funding research where it is needed the most. Your generous donation will support vital programs that help patients before, during and after transplant. The Meredith A. Cowden Foundation is a 501(c)(3) organization, and all monetary donations are tax deductible to the fullest extent allowed by tax laws. Please check with your financial advisor if you have more questions.