Fewer infections and lower infection-related mortality following non-myeloablative versus myeloablative conditioning for allotransplantation of patients with lymphoma

Bone Marrow Transplantation
Veronika BachanovaMarcie Tomblyn

Abstract

Non-myeloablative (NMA) allogeneic donor SCT for patients with relapsed lymphoma is associated with lower treatment-related mortality (TRM). However, the impact of conditioning intensity on post transplant infections remains unclear. We evaluated infections in 141 consecutive patients with lymphoma who were allografted using NMA (n=76) or myeloablative (MA; n=65) conditioning regimens. Using infection incidence density per 1000 patient days, we accounted for all infectious episodes during the first post transplant year. Before neutrophil engraftment, the NMA cohort had a 53% lower rate of bacterial infection (relative risk=0.47; P=0.06), whereas after engraftment the density of bacterial infections was similar in the two groups. In the first month, both invasive fungal infections and viral infections were twofold less frequent (P=0.22; P=0.06) in NMA patients. Late viral and fungal infections as well as CMV reactivation were infrequent after either conditioning intensity. The 1-year infection-related mortality was significantly lower after NMA conditioning (NMA 9% (3-16%) vs MA 22% (11-40%); P=0.03). NMA allogeneic transplantation for lymphoma patients results in substantially fewer early infections and lower infection-related ...Continue Reading

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Citations

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Related Concepts

Communicable Diseases
Lymphoma
Hemopoietic Stem Cell Transplant
Transplantation Conditioning
Bacterial Infections
Cessation of Life
Lymphoma
Mycoses
Transplantation
Transplantation, Homologous

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