Children receiving bone marrow transplant can have serious complication such as bloodstream infections and graft versus host disease and some children die of these complications. Alteration of the bacteria in the gut by treatments including antibiotics is an important cause of these complications. In a previous study Dr. Davies and colleagues have tested the use of human milk to help keep gut bacteria healthy in very young children and found that this treatment worked. They are now studying a purified sugar from human milk, 2-FL that can be given easily as a medicine. Dr. Davies will also test a novel rapid urine test and a blood test to assess health of the gut bacteria during the study. Current tests require a stool sample and can take a long time. This trial will generate the data needed to perform a large-scale multi-center randomized clinical trial that will best prove how well this treatment works.

This grant is generously supported by the Rays of Hope Hero Fund which honors the memory of Rayanna Marrero. She was a happy 3-year-old when she was diagnosed with Acute Lymphoblastic Leukemia (ALL). She successfully battled ALL, but a treatment induced secondary cancer claimed her life at age eight. Rayanna had an amazing attitude and loved life. She, like so many kids facing childhood cancer, did not allow it to define who she was. This Hero Fund aspires to give hope to kids fighting cancer through research.