While FA patients are waiting for a suitable HSC donor, supportive care can be provided via red blood cell and platelet transfusions; oral administration of androgens such as oxymetholone, methyltestosterone, the androgen analogue danazol; or the direct injection of growth factors such as granulocyte-colony forming factor (G-CSF) [145, 146]. This evidence concerns the gene CSF3 and Friedreich ataxia.