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3mg/kg IV (or if prior alloHSCT, 1 mg/kg) over 30 minutes every 14 days on Days 1 and 15 for up to four 28-day courses.

Oral cyclophosphamide 50mg + nivolumab 3 mg/kg IV every 2 weeks for up to 4 courses of treatment

Low dose Cyclophosphamide (CTX) Daily

Oral cyclophosphamide 350 mg every 7 days + nivolumab 3mg/kg IV every 2 weeks for up to 4 courses of treatment

Low dose Cyclophosphamide (CTX) Every 7 Days

Fiona He, MD

This is a phase II trial of nivolumab and low dose cyclophosphamide (CTX) when given in combination to patients with relapsed/refractory acute myeloid leukemia (AML) and higher-risk myelodysplastic syndrome (MDS) who are not eligible for or decline hematopoietic stem cell transplant. It includes a randomized pilot sub-study during stage 1.

Nivolumab and Oral Cyclophosphamide for R/R AML and HIgh Risk MDS

Nivolumab and Oral Cyclophosphamide for Relapsed/Refractory Acute Myeloid Leukemia (AML) and Higher-Risk Myelodysplastic Syndrome (MDS)

Number of participants with adverse events

Overall response rate at 90 days from treatment start. Response is defined as CR + CRi + CRp + PR in AML and CR/PR/hematologic improvement (HI) in MDS.

Complete Remission (CR) - subjects must have bone marrow regenerating normal hematopoietic cells and achieve a morphologic leukemia-free state, an ANC \> 1 x 109/L and platelet count ≥ 100 x 109/L and normal marrow differential with \< 5% blasts, and they will be RBC and platelet transfusion independent (defined as 1 week without RBC transfusion and 1 week without platelet transfusion). There should be no evidence of extramedullary leukemia

Complete Remission with Incomplete Hematologic Recovery (CRi) - subjects must fulfill all the criteria for CR except for incomplete hematological recovery

Complete Remission with Incomplete Platelet Recovery (CRp) - subjects must achieve CR except for incomplete platelet recovery

Partial Remission (PR) - subjects must have ≥50% bone marrow blast reduction or decrease to 5 to 25%

Masonic Cancer Center, University of Minnesota

Nivolumab: 3mg/kg IV (or if prior alloHSCT, 1 mg/kg) over 30 minutes every 14 days on Days 1 and 15 for up to four 28-day courses.

Low dose Cyclophosphamide (CTX): Oral cyclophosphamide 50mg + nivolumab 3 mg/kg IV every 2 weeks for up to 4 courses of treatment

Arm 1: Nivolumab Every 2 Weeks and Cyclophosphamide Daily

Nivolumab: 3mg/kg IV (or if prior alloHSCT, 1 mg/kg) over 30 minutes every 14 days on Days 1 and 15 for up to four 28-day courses.

Low dose Cyclophosphamide (CTX): Oral cyclophosphamide 350 mg every 7 days + nivolumab 3mg/kg IV every 2 weeks for up to 4 courses of treatment

Study title	NCT ID	Conditions	Interventions	Eligibility	Organization	Link
Nivolumab and Oral Cyclophosphamide for R/R AML and HIgh Risk MDS	NCT03417154	Acute Myeloid L... Higher Risk Mye...	Nivolumab Low dose Cyclop... Low dose Cyclop...	18 Years -	Masonic Cancer Center, University of Minnesota
Nivolumab and Oral Cyclophosphamide for R/R AML and HIgh Risk MDS	NCT03417154	Acute Myeloid L... Higher Risk Mye...	Nivolumab Low dose Cyclop... Low dose Cyclop...	18 Years -	Masonic Cancer Center, University of Minnesota

Spots Global Cancer Trial Database for low dose cyclophosphamide (ctx) every 7 days