This study will enroll individuals with FA. All participants will undergo a bone marrow biopsy within 3 months of study entry. Based on the results of this biopsy, participants will undergo either a bone marrow harvest procedure or a cytokine mobilized peripheral blood stem cell (PBSC) collection procedure. Prior to both procedures, medical history will be reviewed, blood will be drawn, liver and kidney function will be evaluated, and a physical examination will be performed. Participants who undergo the bone marrow harvest procedure will be admitted to the hospital, with a possible overnight stay for observation. The following day, participants will have a physical examination and blood draw for laboratory testing. A blood and/or platelet transfusion may be required following the procedure.