Prenatal Maternal Folate Intake May Reduce Childhood Acute Lymphoblastic Leukemia Risk, Study Finds

Strategic Insights -

Researchers have made a significant discovery regarding the link between prenatal maternal folate intake and the risk of childhood acute lymphoblastic leukemia (ALL). The study, which was conducted by a team from the University of California, used Mendelian randomization to investigate the causal relationship between serum folate, total homocysteine, and B vitamins on ALL risk. The findings suggest that higher prenatal maternal folate intake is associated with a reduced risk of childhood ALL, but this interaction is influenced by the child's genetic predisposition to folate deficiency.

Key Takeaways:

  • The study found a significant association between higher prenatal maternal folate intake and reduced risk of childhood ALL (meta-analysis OR = 0.58; 95% CI: 0.34-0.97).
  • In Latinos, higher periconceptional folate intake from food mitigated and reversed the elevated risk associated with low folate polygenic risk score (PRS) and the rs1801133 T allele.
  • The study highlighted the need for personalized approaches to maximize the benefits of folic acid supplementation programs.
  • The research was conducted using data from the California Childhood Cancer Record Linkage Project and the California Childhood Leukemia Study.
  • The study included data from 1,024 children with ALL and 2,107 controls.
  • The authors concluded that maternal folate intake mitigated genetic liability against ALL in Latinos only, while genetic liability persisted in non-Latino Whites.

Statistics:

  • Odds ratio (OR) for childhood ALL risk associated with higher prenatal maternal folate intake: 0.58 (95% CI: 0.34-0.97).
  • Odds ratio (OR) for childhood ALL risk associated with low folate PRS in Latinos: 1.31 (95% CI: 1.01-1.69).
  • Odds ratio (OR) for childhood ALL risk associated with the rs1801133 T allele in Latinos: 1.71 (95% CI: 1.02-2.88).
  • The study found a significant interaction between maternal folate intake and child genetic liability against ALL in Latinos, with a decrease in odds ratio (OR) from 1.31 to 0.53 per 0.05-unit decrease in folate PRS, and from 1.71 to 0.24 per T allele.

Sources:

  • NewsRx. University of California Reports Findings in Acute Lymphoblastic Leukemia (The Interrelationship between Preconception Folate Nutritional Intake and Child Genetic Liability in the Risk of Childhood Acute Lymphoblastic Leukemia). Pediatrics Week. June 14, 2025; p 698.
  • The Interrelationship between Preconception Folate Nutritional Intake and Child Genetic Liability in the Risk of Childhood Acute Lymphoblastic Leukemia. Cancer Epidemiology, Biomarkers & Prevention, 2025.
  • Cancer Epidemiology, Biomarkers & Prevention. Amer Assoc Cancer Research, 615 Chestnut St, 17TH Floor, Philadelphia, PA 19106-4404, USA.