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High prevalence of Dapsone-induced oxidant hemolysis in North American SCT recipients without glucose-6-phosphate-dehydrogenase deficiency. Bone Marrow Transplant 2012 Mar;47(3):399-403 PMID: 21478917

Pubmed ID



Dapsone (4-4'-diaminodiphenylsulfone) is commonly used for Pneumocystis jirovecii pneumonia (PCP) prophylaxis in immunocompromised patients. Oxidant hemolysis is a known complication of dapsone, but its frequency in adult patients who have undergone a SCT for hematological malignancies is not well established. We studied the presence of oxidant hemolysis, by combining examination of RBC morphology and laboratory data, in 30 patients who underwent a SCT and received dapsone for PCP prophylaxis, and compared this group with 26 patients who underwent a SCT and received trimethoprim-sulfamethoxazole (TMP-SMX) for PCP prophylaxis. All patients had normal glucose-6-phosphate dehydrogenase (G6PDH) enzymatic activity. In SCT patients, dapsone compared with TMP-SMX for PCP prophylaxis was associated with a high incidence of oxidant hemolysis (87 vs 0%, P<0.001), and the morphological evaluation of oxidant hemolysis correlated well with laboratory evidence of hemolysis. Dapsone-induced oxidant hemolysis in SCT patients is 20-fold higher than the reported rate in the population of HIV-infected patients, and thus much higher than the prevalence of G6PDH variants in the general population. In our patients, it manifested clinically as a lower Hb that was not significant enough to result in increased packed RBC transfusions.

Author List

Olteanu H, Harrington AM, George B, Hari PN, Bredeson C, Kroft SH


Parameswaran Hari MD Chief, Professor in the Medicine department at Medical College of Wisconsin
Alexandra M. Harrington MD Associate Professor in the Pathology department at Medical College of Wisconsin
Steven Howard Kroft MD Interim Chair, Professor in the Pathology department at Medical College of Wisconsin


2-s2.0-84858075288   8 Citations

MESH terms used to index this publication - Major topics in bold

Anti-Infective Agents
Glucosephosphate Dehydrogenase
Glucosephosphate Dehydrogenase Deficiency
Middle Aged
North America
Retrospective Studies
Stem Cell Transplantation
Time Factors
Trimethoprim, Sulfamethoxazole Drug Combination
jenkins-FCD Prod-299 9ef562391eceb2b8f95265c767fbba1ce5a52fd6