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Risk for childhood leukemia associated with maternal and paternal age

Sergentanis, Theodoros N (author)
Thomopoulos, Thomas P (author)
Gialamas, Spyros P (author)
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Karalexi, Maria A (author)
Biniaris-Georgallis, Stylianos-Iason (author)
Kontogeorgi, Evangelia (author)
Papathoma, Paraskevi (author)
Tsilimidos, Gerasimos (author)
Skalkidou, Alkistis (author)
Uppsala universitet,Obstetrik & gynekologi
Iliadou, Anastasia N (author)
Karolinska Institutet
Petridou, Eleni T (author)
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 (creator_code:org_t)
2015-11-04
2015
English.
In: European Journal of Epidemiology. - : Springer Science and Business Media LLC. - 0393-2990 .- 1573-7284. ; 30:12, s. 1229-1261
Related links:
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  • Journal article (peer-reviewed)
Abstract Subject headings
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  • The role of reproductive factors, such as parental age, in the pathogenesis of childhood leukemias is being intensively examined; the results of individual studies are controversial. This meta-analysis aims to quantitatively synthesize the published data on the association between parental age and risk of two major distinct childhood leukemia types in the offspring. Eligible studies were identified and pooled relative risk (RR) estimates were calculated using random-effects models, separately for childhood acute lymphoblastic leukemia (ALL) and acute myeloid leukemia (AML). Subgroup analyses were performed by study design, geographical region, adjustment factors; sensitivity analyses and meta-regression analyses were also undertaken. 77 studies (69 case-control and eight cohort) were deemed eligible. Older maternal and paternal age were associated with increased risk for childhood ALL (pooled RR = 1.05, 95 % CI 1.01-1.10; pooled RR = 1.04, 95 % CI 1.00-1.08, per 5 year increments, respectively). The association between maternal age and risk of childhood AML showed a U-shaped pattern, with symmetrically associated increased risk in the oldest (pooled RR = 1.23, 95 % CI 1.06-1.43) and the youngest (pooled RR = 1.23, 95 % CI 1.07-1.40) extremes. Lastly, only younger fathers were at increased risk of having a child with AML (pooled RR = 1.28, 95 % CI 1.04-1.59). In conclusion, maternal and paternal age represents a meaningful risk factor for childhood leukemia, albeit of different effect size by leukemia subtype. Genetic and socio-economic factors may underlie the observed associations. Well-adjusted studies, scheduled by large consortia, are anticipated to satisfactorily address methodological issues, whereas the potential underlying genetic mechanisms should be elucidated by basic research studies.

Subject headings

MEDICIN OCH HÄLSOVETENSKAP  -- Klinisk medicin -- Pediatrik (hsv//swe)
MEDICAL AND HEALTH SCIENCES  -- Clinical Medicine -- Pediatrics (hsv//eng)

Keyword

Childhood leukemia; Parental age; Meta-analysis; Meta-regression; Risk factor

Publication and Content Type

ref (subject category)
art (subject category)

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