SLC16A1 and cancer: Interestingly, while both compounds inhibited cancer cell growth when lactate was the only available fuel (Fig. 1a), only 7ACC2 exhibited anti-proliferative effects on SiHa cervix cancer cells in the presence of glucose (Fig. 1a); similar findings were obtained in two other MCT1-expressing cancer cells (i.e., FaDu and MCF-7 cancer cells; Supplementary Fig. 1a, b).