Raised First Trimester Thyroid Peroxidase Antibodies May Predict First Trimester Miscarriage: A Case Control Study

Area of Science:

• Reproductive Immunology
• Obstetrics and Gynecology
• Endocrinology

Background:

• Miscarriage is a common pregnancy complication with often unknown causes.
• Thyroid autoimmunity is increasingly recognized as a potential factor in pregnancy failure.
• Understanding early pregnancy loss predictors is crucial, especially in low-resource settings.

Purpose of the Study:

• To investigate the association between elevated thyroid peroxidase antibodies (TPOAb) and first-trimester miscarriages.
• To assess the predictive value of TPOAb for miscarriage in a Nigerian population.
• To explore socio-demographic factors associated with first-trimester miscarriage.

Main Methods:

• A case-control study involving 145 women with first-trimester miscarriages and matched controls with normal pregnancies.
• Serum samples were analyzed for TPOAb using enzyme-linked immunosorbent assay (ELISA).
• Statistical analysis was performed using SPSS and GraphPad Prism software.

Main Results:

• Elevated TPOAb in the first trimester conferred a 10-fold increased odds of miscarriage (OR 10.34, P=0.0001).
• Low social status and civil servant employment were also associated with higher miscarriage risk.
• The TPOAb test demonstrated high sensitivity (89.66%) and negative predictive value (97.93%).

Conclusions:

• Raised TPOAb levels in early pregnancy are a significant predictor of first-trimester miscarriage.
• Early screening for thyroid autoimmunity may help identify high-risk pregnancies.
• Further research is needed to elucidate the mechanisms and optimize management strategies.