Expanded Haploidentical Natural Killer Cells as Consolidation Strategy for Children/Young Adults With AML

Inclusion Criteria: Patients: * primary intermediate risk AML in molecular complete remission; * primary high risk AML in molecular complete remission awaiting unrelated HSCT; * Karnofsky or Lansky performance scale greater or equal to 70; * written informed consent. Donors: * haploidentical family donor; * donor suitable for cell donation and apheresis according to standard criteria; * written informed consent. Exclusion Criteria: Patients: * uncontrolled infection; * severe hepatic dysfunction: SGOT or SCPT \>=5x upper limit of normal for age; * positive serology for human immunodeficiency virus (HIV). Donors: * pregnancy; * positive serology for HIV, hepatitis B or C.