ATF4 and gestational diabetes: Recently, Chi et al. found that phoenixin-20 ameliorated gestational diabetes mellitus (GDM) symptoms in the GDM mouse model, and phoenixin-20 could significantly inhibit the activation of eukaryotic translation initiation factor 2α/activating transcription factor 4 endoplasmic reticulum (ER) stress signaling pathway in GDM mice (Chi et al., 2021).