Mobilization of CD34+ Peripheral Blood Stem Cells in Patients With Diamond Blackfan Anemia Syndrome (DBAS)

"This study will utilize a standard mobilization regimen that is used for peripheral blood stem cell mobilization in patients with a variety of underlying conditions.~Upon study initiation, participants will undergo a peripheral blood draw and bone marrow aspiration and biopsy. They will then begin the following mobilization regimen:~1. Granulocyte-colony stimulating factor (G-CSF; filgrastim) dosed at 10mcg/kg/day administered subcutaneously in the morning for 5-7 days~2. Plerixafor dosed at 0.24mg/kg/day administered subcutaneously in the evening for 1-4 days~Participants will undergo daily blood draws until criteria for study completion is achieved."