transplantation, median, years (range) 33 (16 61) 40 years, n ( ) 29 (74.36 ) 40 years, n ( ) ten (25.64 ) Donor’s age, median, year (range) 40 (159) 40 years, n ( ) 19 (48.72 ) 40 years, n ( ) 20 (51.28 ) Gender, n ( ) Male 26 (66.67 ) Female 13 (33.33 ) Diagnosis, n ( ) Acute myeloid leukaemia 25 (64.ten ) Acute lymphoid leukaemia 9 (23.08 ) Others 5 (12.82 ) Illness status at PBSCT, n( ) Comprehensive remission 36 (92.31 ) Non-remission three (7.69 ) Donor ecipient gender match, n ( ) Female to male 16 (41.02 ) Female to female 5 (12.82 ) Male to female 6 (15.38 ) Male to male 12 (30.77 ) Graft 12.25 (4.808.31) Mononuclear cells, median, 108/kg (range) 5.05 (two.071.28) CD34+ cells, median, 106/kg (variety) aGVHD biomarker threat, n ( ) Intermediate danger 22 (56.41 ) High threat 17 (43.59 ) Time from stem-cell transplantation to aGVHD onset, days Median (range) 21 (122) Others: CML chronic myeloid leukaemia, MDS myelodysplastic syndrome, AA aplastic anaemia, CR complete remission, NR nonremission, PBSCT peripheral blood stem cell transplantation, GVHD graft-versus-host disease, aGVHD biomarker danger according to the MAGIC biomarker riskAnnals of Hematology (2022) 101:621samples have been fresh and analysed within 24 h at the Beijing Beaufre biolaboratory.GVHD prophylaxisAll Caspase 6 list patients received modified BU/CY + ATG myeloablative conditioning regimens as previously described [25, 26]. Cyclosporin A (CsA), mycophenolate mofetil (MMF) and short-term methotrexate (MTX) had been utilized for GVHD prophylaxis. CsA at a dose of 2 mg/kg was offered intravenously from day – ten, with a trough concentration of 200 to 250 ng/ml. Three to six months after transplantation, in sufferers with out a relapse with the underlying illness and with out cGVHD, the dose of CsA was lowered by 25 each two weeks until discontinuation. MMF at a dose of 500 mg was orally administered twice KDM3 Molecular Weight everyday from day – 10 to day + 30. MTX at a dose of 15 mg/m2 was administered intravenously on day + 1, followed by 10 mg/m2 on day + 3, day + 6 and day + 11. Rabbit anti-thymocyte globulin (rATG, thymoglobulin, rabbit; Genzyme Pharmaceutical Organization, USA) was infused from day – five to day – 2 at a total dose of ten mg/kg.plus the total duration of administration was about 6 months. Reasons for drug withdrawal integrated thrombocytopenia, leukaemia relapse, aGVHD recurrence, posttransplant lymphoproliferative illness (PTLD), cytomegalovirus encephalitis and pneumonia. Moreover, clinicians could possibly decide whether to lessen the dose of or absolutely withdraw the drug according to a extensive evaluation of the illness. Sufferers without having response towards the regimen had been administered an anti-interleukin-2 receptor antibody (basiliximab) at a dose of 20 mg at day 1, day 4 and day eight and after that once a week for four doses.CMV and EBV monitoring and supportive therapyAll patients received ganciclovir (day – 10 day – 2) and acyclovir (day + 1 day + 180) to stop viral infection. Quantitative real-time PCR detection was performed when each week for EBV and CMV DNA contents from day + 14 to day + 90 then twice every month from day + 100 to day + 180. Sufferers having a CMV DNA copy number above 1 103 copies/ml twice or above 1 104 copies/ml after had been diagnosed as getting CMV reactivation, which was an indication for anti-CMV pre-emptive therapy. Ganciclovir was provided for no less than 2 weeks till the CMV DNA copy number decreased. An EBV DNA copy number above 1 104 copies/ ml twice was the indication for pre-emptive rituximab treat