The authors suggest that morroniside reduces tau phosphorylation at S404 and S262 sites through the calpain 1/GSK‐3β/PP2A pathway.[149] Moreover, in human neuroblastoma SK‐N‐SH cells pretreated with morroniside, inhibition of OA‐induced damage and restoration of the morphology of cells were observed. The gene discussed is MAPT; the disease is neuroblastoma.