The research of Andreas Koc et al. showed that the expression level of Cyclin D1, which acts as an outcome biomarker in melanoma and indicates its proliferative and invasive extents, is associated with glucose transporter isoform 1 (GLUT1), glycolysis-related genes hexokinase 1 (HK1), lactate dehydrogenase A (LDH-A), and monocarboxylate transporters 1 (MCT1) [13]. The gene discussed is HK1; the disease is melanoma.