Department of Pediatrics, Cliniques Universitaires Saint-Luc, Brussels, Belgium.
A baby boy with constitutional aplastic anemia refractory to treatment with hematopoietic growth factors underwent BMT from an unrelated HLA-compatible donor. The BM failed to engraft but the combination of a conditioning regimen, immunosuppression and hematopoietic growth factors resulted in a recovery of the patient's own BM and a good outcome.