Efficacy and Safety of Azacitidine Combined With Interferon in the Treatment of Post-transplant Recurrence

Inclusion criteria:

Patients enrolled must meet the following criteria:

1. ≥ 14 years old, male or female;
2. Patients with allogeneic peripheral blood stem cell transplantation due to myeloid tumors of the blood system (AML/MDS/CML/MPN, etc.);
3. Recurrence trend evaluation criteria: the proportion of bone marrow blast cells \<5%; flow cell MRD ≥ 0.01% and interval 2 consecutive times 2 times; fusion gene interval 2 weeks at least 2 consecutive positive and rising trend or from negative to positive; Bone marrow WT1 levels increased dynamically and were greater than 0.6%; chimeric rate (STR) decreased by \>5% (STR \<90%) or XY-FISH donor chimerism decreased by \>0.5%;
4. Blood routine: neutrophils\>0.5×109/L, platelets\>25.0×109/L;
5. There is no active grade II or higher acute GVHD or moderate or severe chronic GVHD;
6. Liver and kidney function: liver function (AST/ALT/TB) \<5 times normal upper limit; renal function (Cr) \< 2 times normal upper limit;
7. The patient must be able to understand and be willing to participate in the study and sign an informed consent form.

Exclusion criteria:

Possible subjects who meet any of the following criteria will be excluded from the trial:

1. Recurrence after transplantation;
2. Patients who have not achieved complete remission after transplantation;
3. Implantation failed;
4. Pregnant or lactating women;
5. Have received other interventions or are receiving other research drugs before the study begins;
6. Patient blood routine: ANC \<0.5 × 109 / L or PLT \< 25 × 109 / L;
7. There are active uncontrolled infections: hemodynamic instability associated with infection, or new signs or signs of infection, or new infections in imaging, persistent fever with asympto or signs cannot be ruled out Infected person
8. People infected with HIV;
9. Active hepatitis B (HBV), active hepatitis C (HCV) requires antiviral therapy; patients with HBV activation risk refer to patients with hepatitis B surface antigen positive or core antibody positive patients who do not receive anti-HBV treatment;
10. Those who are allergic to known azacitidine or interferon;
11. At the discretion of the investigator, other dangerous complications may result.