A frameshift variant in SLC2A2 (NM_001103222:c.771_778delTTGAAAAGinsCATC, rs379675307, OMIA 000366–9913) causes a recessive disorder in cattle that resembles human Fanconi-Bickel syndrome [35–37]. Here, SLC2A2 is linked to glycogen storage disease due to GLUT2 deficiency.