Radiation Biodosimetry in Children Undergoing Total Body Irradiation

Radiation Biodosimetry in Children Undergoing Total Body Irradiation

The purpose of this study is to develop fecal tests that will determine the extent of radiation exposure in patients undergoing radiation treatment for cancer. This project will determine whether fecal biomarkers can be used to diagnose exposure to radiation.

Patients undergoing TBI as part of a hematopoietic stem cell transplant (HSCT) will have feces collected for use in the validation and refinement of new methods for rapid radiation biodosimetry. The stool samples will be collected before, and at defined times after TBI. Stool sampling will occur in the same manner that it does during routine patient care during HSCT.

Inclusion Criteria:

• All races are eligible
• 2 years to 21 years old
• Must be undergoing hematopoietic stem cell transplantation (either autologous or allogeneic) in conjunction with a conditioning regimen that includes total-body irradiation (TBI) (single or multiple fraction).