GSK3B and myasthenia gravis: Additionally, many studies declared that different phytochemical agents such as curcumin (Song et al., 2020) and caffeic acid (Morroni et al., 2018) found in MG could reduce GSK‐3β phosphorylation and stimulate Nrf2/HO‐1 signaling (Morroni et al., 2018; Song et al., 2020).