Volume 80, Issue 10 pp. 1769-1775
Research Article
Full Access

Case Report: Persistent cytomegalovirus (CMV) infection after haploidentical hematopoietic stem cell transplantation using in vivo alemtuzumab: emergence of resistant CMV due to mutations in the UL97 and UL54 genes

Kumi Oshima

Kumi Oshima

Department of Hematology and Oncology, University of Tokyo, Tokyo, Japan

Department of Cell Therapy and Transplantation Medicine, University of Tokyo Hospital, Tokyo, Japan

Division of Hematology, Saitama Medical Center, Jichi Medical School, Saitama, Japan

Search for more papers by this author
Yoshinobu Kanda

Yoshinobu Kanda

Department of Hematology and Oncology, University of Tokyo, Tokyo, Japan

Department of Cell Therapy and Transplantation Medicine, University of Tokyo Hospital, Tokyo, Japan

Division of Hematology, Saitama Medical Center, Jichi Medical School, Saitama, Japan

Search for more papers by this author
Shinichi Kako

Shinichi Kako

Department of Hematology and Oncology, University of Tokyo, Tokyo, Japan

Search for more papers by this author
Yuki Asano-Mori1

Yuki Asano-Mori1

Department of Hematology and Oncology, University of Tokyo, Tokyo, Japan

Division of Hematology, Japanese Red Cross Medical Center, Tokyo, Japan

Search for more papers by this author
Takuro Watanabe

Takuro Watanabe

Department of Hematology and Oncology, University of Tokyo, Tokyo, Japan

Search for more papers by this author
Toru Motokura

Toru Motokura

Department of Hematology and Oncology, University of Tokyo, Tokyo, Japan

Search for more papers by this author
Shigeru Chiba

Shigeru Chiba

Department of Cell Therapy and Transplantation Medicine, University of Tokyo Hospital, Tokyo, Japan

Search for more papers by this author
Kimiyasu Shiraki

Kimiyasu Shiraki

Department of Virology, Toyama University, Toyama, Japan

Search for more papers by this author
Mineo Kurokawa

Corresponding Author

Mineo Kurokawa

Department of Hematology and Oncology, University of Tokyo, Tokyo, Japan

Department of Hematology and Oncology, Graduate School of Medicine, University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-8655, Japan.===Search for more papers by this author
First published: 21 August 2008
Citations: 19

Abstract

Addition of in vivo alemtuzumab to the conditioning regimen enabled 2- or 3-locus-mismatched hematopoietic stem cell transplantation with an acceptable incidence of graft-versus-host-disease. However, the procedure was associated with a high incidence of cytomegalovirus (CMV) reactivation. Although preemptive therapy with ganciclovir prevented successfully severe CMV diseases and CMV-related mortality, a patient developed persistent positive CMV antigenemia for more than 1 year after transplantation and CMV disease, despite the use of ganciclovir and foscarnet. The in vitro susceptibility assay showed that the clinical isolate was resistant to foscarnet, moderately resistant to ganciclovir, but sensitive to cidofovir. Therefore, cidofovir was administered. CMV antigenemia became negative within 2 weeks and never developed again. Nucleotide sequence of the UL54 and UL97 of the clinical isolate showed 4 amino acid substitutions (V11L, Q578H, S655L, and G874R) in UL54 and 2 mutations (A140V and A594V) in UL97 compared with the Towne and AD169 strains. Ganciclovir resistance was suspected to be caused by both A594V of UL97 and Q578H of UL54, whereas foscarnet resistance was due mainly to Q578H of UL54. In conclusion, the in vitro susceptibility assay as well as nucleotide sequence of clinical isolate is important to choose appropriate antiviral agents for patients who have persistent CMV reactivation after stem cell transplantation. J. Med. Virol. 80:1769–1775, 2008. © 2008 Wiley-Liss, Inc.

The full text of this article hosted at iucr.org is unavailable due to technical difficulties.