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Peripheral blood haplo-SCT feasible for leukemia patients 70 years and older

Peripheral blood haplo-SCT feasible for leukemia patients 70 years and older

For patients with acute myeloid leukemia (AML)/myelodysplastic syndromes (MDS) aged 70 years and older, haploidentical stem cell transplantation (Haplo-SCT) using a nonmyeloablative conditioning regimen (NMAC) is feasible, with no early nonrelapse mortality (NRM), according to a study published online Nov. 3 in Bone Marrow Transplantation.

Samia Harbi, M.D., from the Institut Paoli-Calmettes in Marseille, France, and colleagues reported a single-center experience of peripheral blood Haplo-SCT with NMAC and posttransplantation cyclophosphamide in 50 patients aged 70 years and older with AML and MDS (27 and 23, respectively). Twenty-four percent of the patients had active disease at Haplo-SCT.

The researchers found that the cumulative incidence was 6 and 25 percent for grade 3 to 4 acute and moderate-to-severe chronic graft-versus-host disease (GVHD), respectively. At day +100, NRM was 0 percent. At three years, NRM, relapse, , and overall survival were 16, 18, 66, and 69 percent, respectively. Eighty-eight percent of patients who were disease-free at two years after Haplo-SCT were living without immunosuppressive treatment.

"We conclude that in highly selected patients ≥70 years, NMAC Haplo-SCT with peripheral blood stem cell and posttransplantation cyclophosphamide is very well tolerated and allowed long-term survival in AML or MDS without persistent chronic GVHD," the authors write.

More information: Samia Harbi et al, Peripheral blood haploidentical hematopoietic cell transplantation for patients aged 70 years and over with acute myeloid leukemia or high-risk myelodysplastic syndrome, Bone Marrow Transplantation (2023). DOI: 10.1038/s41409-023-02134-w

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Citation: Peripheral blood haplo-SCT feasible for leukemia patients 70 years and older (2023, December 20) retrieved 25 April 2024 from https://medicalxpress.com/news/2023-12-peripheral-blood-haplo-sct-feasible-leukemia.html
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