Monitoring of Chimerism After Transplantation in Patients With β Thalassemia Major and the Treatment Strategies for the Reduction of Chimerism

Exclusion Criteria

• •Complicated with severe cardiac insufficiency and cardiac ejection fraction (EF) was lower than 50%. Complicated with severe pulmonary insufficiency (obstructive and / or restrictive ventilatory disorders). Complicated with severe liver function damage and liver function index (ALT or TBIL) is more than 2 times of the upper limit of the normal value. Complicated with severe renal dysfunction and renal function index (Cr or BUN) is 2 times of the upper limit of the normal value. Complicated with severe active bleeding