A Study to Investigate Use of Off-the-shelf Natural Killer (NK) Cells (SAR445419) in Relapsed/Refractory Acute Myeloid Leukemia

Inclusion Criteria: Participant must be 18 years of age inclusive Participants with confirmed diagnosis of relapsed or primary refractory acute myeloid leukemia (AML), according to World Health Organization (WHO) classification, including: Participants with relapsed AML after allogeneic stem cells transplantation, including those who have received donor lymphocyte infusions, Isolated central nervous system (CNS) or extramedullary disease, At least 1 prior line of therapy which includes chemotherapy, hypomethylating agents, venetoclax or targeted therapy. Participants with a weight ≥42 kg. Exclusion Criteria: Second primary malignancy that requires active therapy. Adjuvant hormonal therapy is allowed. Known acquired immunodeficiency syndrome (AIDS-related illnesses) or human immunodeficiency virus (HIV) disease requiring antiretroviral treatment, or having active hepatitis B or C infection, or symptomatic severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) infection. Pregnant or breast-feeding women, female participants of childbearing potential, and male participants with female partners of childbearing potential who are not willing to avoid pregnancy by using a highly effective method of contraception (2 barrier method or 1 barrier method with a spermicide, intrauterine device, or hormonal contraception with inhibition of ovulation, for 2 weeks prior to the first dose of SAR445419, during treatment, and 6 months after the last dose of fludarabine). A woman is considered of childbearing potential, i.e., fertile, following menarche and until becoming postmenopausal unless permanently sterile. History of solid organ transplant, including corneal transplant. Receiving at the time of first SAR445419 administration corticosteroid as a concomitant medication with corticosteroid dose >10 mg/day of oral prednisone or the equivalent, except steroid inhaler, nasal spray, or ophthalmic solution Known contraindication to any of the non-investigational medicinal products (NIMPs) (fludarabine, cytarabine, acetaminophen and diphenhydramine). Concurrent treatment with other investigational drugs The above information is not intended to contain all considerations relevant to a potential participation in a clinical trial.