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National Institute of Environmental Health Sciences

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Your Environment. Your Health.

Publication Detail

Title: Tobacco smoke exposure and the risk of childhood acute lymphoblastic and myeloid leukemias by cytogenetic subtype.

Authors: Metayer, Catherine; Zhang, Luoping; Wiemels, Joseph L; Bartley, Karen; Schiffman, Joshua; Ma, Xiaomei; Aldrich, Melinda C; Chang, Jeffrey S; Selvin, Steve; Fu, Cecilia H; Ducore, Jonathan; Smith, Martyn T; Buffler, Patricia A

Published In Cancer Epidemiol Biomarkers Prev, (2013 Sep)

Abstract: Tobacco smoke contains carcinogens known to damage somatic and germ cells. We investigated the effect of tobacco smoke on the risk of childhood acute lymphoblastic leukemia (ALL) and myeloid leukemia (AML), especially subtypes of prenatal origin such as ALL with translocation t(12;21) or high-hyperdiploidy (51-67 chromosomes).We collected information on exposures to tobacco smoking before conception, during pregnancy, and after birth in 767 ALL cases, 135 AML cases, and 1,139 controls (1996-2008). Among cases, chromosome translocations, deletions, or aneuploidy were identified by conventional karyotype and fluorescence in situ hybridization.Multivariable regression analyses for ALL and AML overall showed no definite evidence of associations with self-reported (yes/no) parental prenatal active smoking and child's passive smoking. However, children with history of paternal prenatal smoking combined with postnatal passive smoking had a 1.5-fold increased risk of ALL [95% confidence interval (CI), 1.01-2.23], compared to those without smoking history (ORs for pre- or postnatal smoking only were close to one). This joint effect was seen for B-cell precursor ALL with t(12;21) (OR = 2.08; 95% CI, 1.04-4.16), but not high hyperdiploid B-cell ALL. Similarly, child's passive smoking was associated with an elevated risk of AML with chromosome structural changes (OR = 2.76; 95% CI, 1.01-7.58), but not aneuploidy.Our data suggest that exposure to tobacco smoking was associated with increased risks of childhood ALL and AML; and risks varied by timing of exposure (before and/or after birth) and cytogenetic subtype, based on imprecise estimates.Parents should limit exposures to tobacco smoke before and after the child's birth.

PubMed ID: 23853208 Exiting the NIEHS site

MeSH Terms: Adolescent; California/epidemiology; Case-Control Studies; Child; Child, Preschool; Cytogenetics; Female; Humans; Infant; Infant, Newborn; Leukemia, Myeloid/epidemiology*; Leukemia, Myeloid/etiology; Leukemia, Myeloid/genetics; Male; Multivariate Analysis; Precursor Cell Lymphoblastic Leukemia-Lymphoma/epidemiology*; Precursor Cell Lymphoblastic Leukemia-Lymphoma/etiology; Precursor Cell Lymphoblastic Leukemia-Lymphoma/genetics; Pregnancy; Prenatal Exposure Delayed Effects/epidemiology; Risk Factors; Tobacco Smoke Pollution/adverse effects; Tobacco Smoke Pollution/statistics & numerical data*

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