MANF and type 2 diabetes mellitus: A human patient with a mutation in the MANF gene has been reported to suffer from type-2 diabetes mellitus, hypothyroidism, primary hypogonadism, short stature, mild intellectual disability, obesity, deafness, high myopia, microcephaly, and partial alopecia (Yavarna et al., 2015), highlighting the roles MANF in many organs.