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Published on: November 21, 2018

High birth weight as an important risk factor for infant leukemia

S Koifman1, M S Pombo-de-Oliveira,

  • 1National School of Public Health/FIOCRUZ, Rua Leopoldo Bulhões, 1480, Rio de Janeiro, RJ 21041-210, Brazil.

British Journal of Cancer
|January 31, 2008
PubMed

Insights

High birth weight, particularly over 4000g, is linked to a greater risk of infant leukaemia (IL). This study analyzed birth weights of 201 IL cases versus 440 controls in Brazil.

Area of Science:

  • Epidemiology
  • Pediatric Oncology

Background:

  • Infant leukaemia (IL) is a significant childhood cancer.
  • Understanding risk factors for IL is crucial for prevention and early detection.

Purpose of the Study:

  • To investigate the association between birth weight and the risk of infant leukaemia.
  • To compare birth weight distributions in IL cases and non-cancer controls.

Main Methods:

  • A case-control study comparing 201 infant leukaemia cases with 440 non-cancer controls in Brazil (1999-2005).
  • Analysis of birth weight distribution, including odds ratios (OR) for different weight strata.
  • Adjustment for potential confounders such as gender, socioeconomic status, maternal age, and environmental exposures.

Main Results:

  • Infant leukaemia cases showed a higher prevalence of higher birth weights (3000-3999g and ≥4000g) compared to controls.
  • Odds ratios indicated a significantly increased risk of IL for infants with birth weights of 3000-3999g (OR=1.68) and ≥4000g (OR=2.28) versus the reference group (2500-2999g).
  • After adjusting for confounders, infants weighing ≥4000g still showed an elevated risk (OR=1.30).

Conclusions:

  • High birth weight is a potential risk factor associated with an increased risk of infant leukaemia.
  • Further research is warranted to elucidate the biological mechanisms linking high birth weight and IL.
  • Findings highlight the importance of considering birth weight in epidemiological studies of infant cancers.

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