While the expression of TTR was not impacted by MMI‐induced fetal hypothyroidism, there was a significant downregulation in the expression of SERPINA7 in the MMI fetuses at GDs 66 and 76 relative to the equivalent age‐matched CONs (p = 0.011 and p < 0.001, respectively). This evidence concerns the gene SERPINA7 and hypothyroidism.