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Pregnancy Outcomes Following In Utero Exposure to Second-Generation Antipsychotics: A Systematic Review and

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Second-generation antipsychotics (SGAs) use in early pregnancy increased major congenital malformations and preterm births. Further research is needed to confirm these risks for pregnant women taking SGAs.

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Area of Science:

  • Pharmacology
  • Obstetrics
  • Psychiatry

Background:

  • Second-generation antipsychotics (SGAs) are widely prescribed for mental health conditions.
  • Existing data on SGA safety during pregnancy is conflicting.
  • In utero exposure risks require thorough investigation.

Purpose of the Study:

  • To systematically review and meta-analyze the risk of adverse pregnancy outcomes from in utero exposure to SGAs.
  • To assess the association between first-trimester SGA exposure and major congenital malformations.
  • To evaluate secondary outcomes including miscarriage, stillbirth, and birth weight variations.

Main Methods:

  • Systematic review and meta-analysis of studies from EMBASE and MEDLINE (1990-2014).
  • Inclusion of studies reporting SGA use in pregnancy and adverse outcomes compared to a healthy control group.
  • Analysis of primary outcome: major congenital malformations; secondary outcomes: miscarriage, stillbirth, preterm birth, gestational age, birth weight.

Main Results:

  • 12 studies (1782 cases, 1,322,749 controls) met inclusion criteria.
  • First-trimester SGA exposure showed a significant increased risk for major congenital malformations (OR 2.03, 95% CI 1.41-2.93).
  • Increased risk observed for preterm births (OR 1.85, 95% CI 1.20-2.86); no specific malformation pattern identified.

Conclusions:

  • First-trimester SGA use is associated with increased risks of major congenital malformations and preterm birth.
  • The lack of a specific malformation pattern complicates direct risk attribution.
  • Further high-quality studies controlling for confounding factors are essential to validate these findings and inform clinical practice.