title: Unusual viral infections (progressive multifocal leukoencephalopathy and cytomegalovirus disease) after high-dose chemotherapy with autologous blood stem cell rescue and peritransplantation rituximab.
abstract: Efforts to reduce relapse of non-Hodgkin lymphoma after autologous transplantation have included ex vivo stem cell selection and/or peritransplantation immunotherapy. The late infectious and immunologic consequences of these maneuvers are not well understood, although an increase in early cytomegaloviral disease after CD34(+) stem cell selection and an alteration in immunoglobulin and T-cell recovery after peritransplantation rituximab has been noted. We report the first 2 cases of progressive multifocal leukoencephalopathy caused by JC papovavirus after autologous peripheral blood stem cell transplantation and a case each of cytomegalovirus retinitis and pneumonitis. All 4 patients experienced significant impairment of CD4 T-cell recovery, placing them at risk for these unusual viral infections. The clustering of cases is concerning because all occurred shortly after the introduction of peritransplantation rituximab into treatment protocols (4 of 62 immunotherapy recipients compared with 0 of 276 without; z = 3.595; P <.001), although a direct association with this CD20 B-cell-directed therapy remains speculative.
authors.affiliation: Adult Blood and Marrow Transplantation Program, Hackensack University Medical Center, NJ, USA. sgoldberg@humed.com
authors.forename: Stuart L
authors.initials: SL
authors.lastname: Goldberg
authors.forename: Andrew L
authors.initials: AL
authors.lastname: Pecora
authors.forename: Robert S
authors.initials: RS
authors.lastname: Alter
authors.forename: Mark S
authors.initials: MS
authors.lastname: Kroll
authors.forename: Scott D
authors.initials: SD
authors.lastname: Rowley
authors.forename: Stanley E
authors.initials: SE
authors.lastname: Waintraub
authors.forename: Kavita
authors.initials: K
authors.lastname: Imrit
authors.forename: Robert A
authors.initials: RA
authors.lastname: Preti
mesh_terms: D000328:Adult; D000368:Aged; D000911:Antibodies, Monoclonal / Q000008:administration & dosage / Q000009:adverse effects*; D058846:Antibodies, Monoclonal, Murine-Derived; D000970:Antineoplastic Agents / Q000008:administration & dosage / Q000009:adverse effects*; D003586:Cytomegalovirus Infections / Q000139:chemically induced / Q000209:etiology; D005260:Female; D018380:Hematopoietic Stem Cell Transplantation / Q000009:adverse effects; D006801:Humans; D007968:Leukoencephalopathy, Progressive Multifocal / Q000139:chemically induced / Q000821:virology; D008223:Lymphoma / Q000150:complications / Q000628:therapy; D008297:Male; D012189:Retrospective Studies; D000069283:Rituximab; D014182:Transplantation, Autologous / Q000009:adverse effects; D014777:Virus Diseases / Q000139:chemically induced* / Q000209:etiology
chemical_list: D000911:Antibodies, Monoclonal; D058846:Antibodies, Monoclonal, Murine-Derived; D000970:Antineoplastic Agents; D000069283:Rituximab