HA-1 T TCR T Cell Immunotherapy for the Treatment of Patients With Relapsed or Refractory Acute Leukemia After Donor Stem Cell Transplant

Inclusion Criteria: * Subject age 0-80 years at the time of enrollment. * Subject must express HLA-A\*0201 * Subject must have the HA-1(H) genotype (RS\_1801284: A/G, A/A) * Subject must have an adult donor for HCT who is adequately HLA matched by institutional standards (includes HLA-matched related or unrelated donors, and HLA-mismatched family donors, including haploidentical donors) and is either: * HLA-A\*0201 positive and HA-1(H) negative (RS\_1801284: G/G) or * HLA-A\*0201 negative * Subjects who are currently undergoing or who previously underwent allogeneic HCT for * Acute myeloid leukemia (AML) of any subtype * Acute lymphoid leukemia (ALL) of any subtype * Mixed phenotype/undifferentiated/any other type of acute leukemia, including blastic plasmacytoid dendritic cell neoplasm * Chronic myeloid leukemia with a history of blast crisis and: * With relapse or refractory disease (\>= 5% marrow blasts, or circulating blasts) at any time after HCT * With persistent rising minimal residual disease (defined as detectable disease by morphology, flow cytometry, molecular or cytogenetic testing but \< 5% marrow blasts by morphology, no circulating blasts on \>= 2 of two consecutive tests), refractory or ineligible for treatment with tyrosine kinase inhibitors at any time after HCT * Myelodysplastic syndrome (MDS) of any subtype * Chronic myelomonocytic leukemia (CMML) * Juvenile myelomonocytic leukemia (JMML) * Subjects must be able to understand …