This is a retrospective, translational, epidemiologic, multicenter, non-interventional study (No EPA study) to provide insights into disease epidemiology, disease biology, treatment regimens, and clinical outcomes of patients with acute myeloblastic leukemia (AML) in routine clinical practice according to their molecular markers.

The primary objective of the study is to describe the use of the main molecular markers (FLT3 and NPM1) in the real-life according of the type of AML, treating institution, patients' characteristics, and disease status.

This is a retrospective, translational, epidemiologic, multicenter, non-interventional study (No EPA study) to provide insights into disease epidemiology, disease biology, treatment regimens, and clinical outcomes of patients with AML in routine clinical practice according to their molecular markers.

Once it has been confirmed that all selection criteria for the study have been met and informed consent has been obtained, the subject will be considered enrolled in the study and the investigator can proceed to collect data from their medical record by completing a case report (CRF).

The study contemplates the retrospective collection of data from disease diagnosis to the start of the study. Only data obtained before the start of the study will be collected in order to ensure they are retrospective in nature.

The study will be conducted following the requirements contained in the Declaration of Helsinki (Fortaleza, Brazil 2013) and in accordance with the current Spanish legislation with regard to conducting observational studies (Ministerial Order SAS/3470/2009).

The primary objective of the study is to describe the use of the main molecular markers (FLT3 and NPM1) in the real-life according of the type of AML, treating institution, patients' characteristics, and disease status.

This project will be conducted in the Spanish PETHEMA cooperative group, constituted by 60 institutions and seven main central laboratories with extensive technological capacity. All patients will be included in the ongoing PETHEMA epidemiologic registry of AML with the purpose to collect a large number, additional and non-pre-existent clinical data, including first-line and salvage treatment schedules and outcomes of each patient.

For this study the PETHEMA AML registry will be enlarged seeking for new cases not previously reported. The data base information will be updated emphasizing for the capture of new data on molecular screening tests performed on a routine basis (FLT3, NPM1, and others). For these purpose, information will be systematically requested from the main PETHEMA laboratories. Therapies and clinical outcome data will be retrospectively collected. This is a one-step study without intervention, in which all analyses will be performed at the end of the database completion.

Inclusion Criteria:

1. All adult patients with AML (excluding APL) according to the WHO criteria (2008), regardless of the treatment administered by their treating physician.
2. AML at diagnosis and at relapse or refractoriness.
3. Patients from institutions participating in the ongoing PETHEMA AML registry.
4. Patients with information about the molecular screening including FLT3 with or without NPM1 mutations (including positive/negative or not performed).
5. Ability to give informed consent before the study initiation. Death patients and patients who are no longer contactable or lost to follow-up will be excluded from consent requirement.

Exclusion Criteria:

1. Pediatric patients.
2. Acute promyelocytic leukemia.

Adult patients diagnosed with AML (new diagnosis or relapsed/refractory disease). These patients must meet all the inclusion criteria and none of the exclusion criteria specified.