This is a multicenter, prospective, translational study, to evaluate the immunogenic profile of AML cases according to immune checkpoint molecule expression.

This is a multicenter, prospective, translational study. Pharmacological treatments will not be object of the present study. Patients will follow the prescribed therapeutic indications according to regular clinical practice. Biological samples and clinical data will be collected at fixed timepoints.

Aim of the study is to evaluate the immunogenic profile of AML cases according to immune checkpoint molecule expression.

A total of 75 AML patients affected by primary or secondary AML, at diagnosis ( 45 patients) or relapse (30 patients) will be enrolled in the protocol (18 months for patient enrolment). Blood,BM and saliva samples will be collected from each patients; for patients enrolled at diagnosis, samples will be collected before and after treatment with hypomethylating agents.

Inclusion Criteria:

1. Patients with new diagnosis of primary or secondary AML candidate to first line treatment with hypomethylating agents (specific for Cohort 1) Patients with primary or secondary AML who relapse after/during first line treatment with hypomethylating agents (specific for Cohort 2)

   for each cohort:

2. Participant is willing and able to give informed consent for participation in the study

3. Male or Female, aged >18 years

4. Availability of clinical data

Exclusion Criteria:

1. Age < 18 years
2. AML M3 subtype according to FAB classification

AML patients affected by primary or secondary AML, at diagnosis or relapse