Fumarate hydratase and phosphoglycerate mutase isozyme B were described in Chinese patients with AIH [36,37], and other autoantigens were mentioned in various studies (IL4R, AL137145, LOC646100, C17orf99, METRNL, APCDD1L [17], lamin, histone, cyclin A and U1RNP-A [38]). Here, METRNL is linked to autoimmune hepatitis.