Volume 83, Issue 11 pp. 846-849
Brief Research Report
Free Access

Trisomy 8 in an allogeneic stem cell transplant recipient representative of a donor-derived constitutional abnormality

Noelle V. Frey

Corresponding Author

Noelle V. Frey

Division of Hematology-Oncology and Abramson Cancer Center, Hospital of the University of Pennsylvania, Philadelphia, Pennsylvania

Division of Hematology-Oncology, University of Pennsylvania Medical Center, 16 Penn Tower, 3400 Spruce Street, Philadelphia, PASearch for more papers by this author
Christopher E. Leid

Christopher E. Leid

Department of Pathology and Laboratory Medicine, Hospital of the University of Pennsylvania, Philadelphia, Pennsylvania

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Peter C. Nowell

Peter C. Nowell

Department of Pathology and Laboratory Medicine, Hospital of the University of Pennsylvania, Philadelphia, Pennsylvania

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Ewa Tomczak

Ewa Tomczak

Department of Pathology and Laboratory Medicine, Hospital of the University of Pennsylvania, Philadelphia, Pennsylvania

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Honore T. Strauser

Honore T. Strauser

Department of Pathology and Laboratory Medicine, Hospital of the University of Pennsylvania, Philadelphia, Pennsylvania

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Margaret Kasner

Margaret Kasner

Division of Hematology-Oncology and Abramson Cancer Center, Hospital of the University of Pennsylvania, Philadelphia, Pennsylvania

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Steven Goldstein

Steven Goldstein

Division of Hematology-Oncology and Abramson Cancer Center, Hospital of the University of Pennsylvania, Philadelphia, Pennsylvania

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Alison Loren

Alison Loren

Division of Hematology-Oncology and Abramson Cancer Center, Hospital of the University of Pennsylvania, Philadelphia, Pennsylvania

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Edward Stadtmauer

Edward Stadtmauer

Division of Hematology-Oncology and Abramson Cancer Center, Hospital of the University of Pennsylvania, Philadelphia, Pennsylvania

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Selina Luger

Selina Luger

Division of Hematology-Oncology and Abramson Cancer Center, Hospital of the University of Pennsylvania, Philadelphia, Pennsylvania

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Elizabeth Hexner

Elizabeth Hexner

Division of Hematology-Oncology and Abramson Cancer Center, Hospital of the University of Pennsylvania, Philadelphia, Pennsylvania

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Joanne Hinkle

Joanne Hinkle

Division of Hematology-Oncology and Abramson Cancer Center, Hospital of the University of Pennsylvania, Philadelphia, Pennsylvania

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David L. Porter

David L. Porter

Division of Hematology-Oncology and Abramson Cancer Center, Hospital of the University of Pennsylvania, Philadelphia, Pennsylvania

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First published: 19 August 2008
Citations: 14

Conflict of Interest: Nothing to report.

Abstract

Trisomy 8 is a common cytogenetic abnormality in myeloid malignancies. It can also be present constitutionally and is associated with a wide range of phenotypes. We report a case of a 20-year-old woman with acute myelogenous leukemia associated with the 11q23/MLL translocation who underwent allogeneic hematopoietic stem cell transplantation (HSCT) from a healthy, unrelated 26-year-old female. Cytogenetics on a bone marrow biopsy and aspirate performed 71 days after transplant to evaluate pancytopenia identified trisomy 8 in 6 of 7 cells examined. The bone marrow was hypocellular but normal by morphology and flow cytometry. Fluorescent in situ hybridization (FISH) for the original 11q23/MLL translocation was negative. Chimerism analysis using multiplex polymerase chain reaction to amplify an informative short tandem repeat demonstrated 97% donor cells. These findings were confirmed by repeat bone marrow biopsies at Day 110 after transplant and 1 year after transplant. With resolution of comorbid illness, the patient's peripheral blood counts recovered and remained normal at 1 year after HSCT. FISH analysis of a cryopreserved sample of the donor graft showed trisomy 8 in 120 of 200 cells examined. This represents the first reported case of a person with constitutional trisomy 8 mosaicism serving as a stem cell donor. The case illustrates the importance of identifying donor-derived constitutional abnormalities to avoid the assumption that these cytogenetic abnormalities after HSCT are representative of malignant disease. Am. J. Hematol., 2008. © 2008 Wiley-Liss, Inc.

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