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Blood, 1 January 2002, Vol. 99, No. 1, pp. 375-377

BRIEF REPORT

Preferential loss of maternal 9p alleles in childhood acute lymphoblastic leukemia

Ian M. Morison, Lana M. Ellis, Lochie R. Teague, and Anthony E. Reeve

From the Cancer Genetics Laboratory, Department of Biochemistry, University of Otago, Dunedin, New Zealand; and Paediatric Haematology/Oncology, Starship Children's Health, Auckland, New Zealand.

Germ-line events, such as paternal mutation or genomic imprinting, contribute to the early onset of childhood cancers such as retinoblastoma, Wilms tumors, and neuroblastoma. Given the high frequency of deletion involving chromosome 9p in childhood acute lymphoblastic leukemia (ALL), this study investigated whether 9p deletion might reflect preexisting germ-line gene inactivation. To do this the parental origin of deletion was determined in 10 cases of ALL with 9p21 loss of heterozygosity. Of these cases, 9 showed loss of the maternally derived allele, suggesting that a germ-line event involving a 9p gene may play a role in the onset of childhood ALL.

© 2002 by The American Society of Hematology.
 

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  Copyright © 2002 by American Society of Hematology         Online ISSN: 1528-0020