GPT and Stillbirth: IPD analysis showed that total bile acid concentrations were more highly predictive of stillbirth for singleton pregnancies than the other biomarkers assessed (ROC AUC 0·85 [95% CI 0·77–0·93]; figure 3A), whereas the associations between stillbirth and alanine aminotransferase (ROC AUC 0·46 [95% CI 0·35–0·57]; figure 3A) and aspartate aminotransferase (ROC AUC 0·58 [0·33–0·83]; figure 3B) were lower than for total bile acid; bilirubin was also less predictive of stillbirth than was total bile acid (ROC AUC 0·79 [0·62 to 0·95]; figure 3B, table).