The researchers also tested the use of synthetic Humanin P3S in an AD mouse model, and showed that the histological features of AD are lessened by this mutated form of Humanin, as compared to that of the non‐mutated peptide, but there was no data to show a beneficial effect of Humanin P3S on cognitive impairment. The gene discussed is MT-RNR2; the disease is Cognitive impairment.