Leukemia risk in children exposed to benzene and PM10 from vehicular traffic: a case–control study in an Italian population
Myeloid
Male
Risk
Childhood Leukemia
Pediatric Cancer
Epidemiology
610
Childhood leukemia
Acute
01 natural sciences
Rare Diseases
PM10
Clinical Research
Risk Factors
Health Sciences
Traffic
Humans
epidemiology; environment; benzene; PM10; childhood leukemia; modeling; risk factors
Preschool
Child
Cancer
0105 earth and related environmental sciences
Pediatric
Air Pollutants
Leukemia
Case-control study
Benzene
Hematology
Environmental Exposure
Precursor Cell Lymphoblastic Leukemia-Lymphoma
3. Good health
Leukemia, Myeloid, Acute
Motor Vehicles
Logistic Models
Italy
Case-Control Studies
Child, Preschool
Public Health and Health Services
Female
Particulate Matter
DOI:
10.1007/s10654-012-9727-1
Publication Date:
2012-08-14T08:53:42Z
AUTHORS (16)
ABSTRACT
Benzene, a recognized occupational leukemogen in adults, has been hypothesized to also increase the risk of childhood leukemia. We carried out a population-based case-control study in a northern Italy community involving 83 cases with acute childhood leukemia diagnosed in the years 1998-2009 and 332 matched controls. We assessed residential exposure to benzene and to particulate matter ≤10 μm (PM10) from motorized traffic using geocoded residences and detailed emission and dispersion modeling. Exposure to benzene, and to a lesser extent to PM10, appeared to be independently associated with an excess leukemia risk. When we stratified the study population by age and by leukemia subtype, the relative risk associated with benzene exposure was higher among children aged less than 5 years, and despite small numbers this relation appeared to be considerably stronger for acute myeloid leukemia than for acute lymphoblastic leukemia. Overall, these findings suggest that exposure to low levels of benzene released from motorized traffic may increase the risk of childhood leukemia, and suggest a possible independent effect of PM10, although unmeasured confounding due to other pollutants cannot be ruled out.
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