Cho et al designed a nanocarrier consisting mainly of lecithin and self‐assembling Cas9 complexes with single‐stranded guide RNA (sgRNA) ribonucleoprotein (Cas9‐RNP) for injection into type 2 diabetes mellitus (T2DM) db/db mice.97 Here, RNPC3 is linked to type 2 diabetes mellitus.