Fatal Cyberlindnera fabianii fungemia in a patient with mixed phenotype acute leukemia after umbilical cord blood transplantation

International Journal of Hematology
Seiichiro KatagiriKoichi Makimura

Abstract

We report a case of Cyberlindnera fabianii fungemia after umbilical cord blood transplantation (CBT). A 69-year-old woman was diagnosed as having mixed phenotype acute leukemia. The patient received CBT for primary refractory disease. After preconditioning chemotherapy, the patient's condition deteriorated, leading to acute respiratory failure from capillary leak syndrome and consequent admittance to the intensive care unit. The patient recovered temporarily following the administration of noninvasive positive pressure ventilation and continuous hemodiafiltration, but died of fungemia with the presence of yeast-like cells 15 days post-CBT. The yeast-like cells were analyzed by sequencing of the D1/D2 domain of the large subunit and the internal transcribed spacer domain, and were identified as C. fabianii. This case shows that molecular genetic-based methods may be effective for detecting undetermined invasive fungal infections in stem cell transplantation settings.

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