A similar loss of MIST1 and PTF1a proteins is observed in murine PDAC cell lines derived from KC and KPC mice (KC, KPC1, KPC2) as well as from human PDAC tumors (BxPC‐3, Panc‐1, MiaPaCa‐2) (Fig. 1D). The gene discussed is BHLHA15; the disease is keratoconus.