In addition, Mfsd1 and Mfsd3 (presently called Slc33a2) (Perland et al., 2017b), Mfsd5 (now under the name of Slc61a1) and Mfsd11 (Perland et al., 2016), Mfsd14a and Mfsd14b (Lekholm et al., 2017), and Unc93a (Ceder et al., 2017) are all affected by energy availability mice in vivo and Mfsd9 is linked to diabetes (Rampersaud et al., 2007). The gene discussed is SLC61A1; the disease is diabetes mellitus.