In order to assess NADH‐reduction capacity and electron transfer efficiency, the enzymatic capacity to oxidize NADH and the transfer of electrons onto cytochrome c were quantified in the presence of decylubiquinone and cytochrome c for GDM, MDM, and TLM (Birch‐Machin et al. 1994; Klusch et al. 2023). The gene discussed is CYCS; the disease is gestational diabetes.