Glioblastoma cells have been marked to metabolize galactosethrough the Leloir pathway for ATP production.62 Recently, it has been demonstrated that ribose acts asa fuel for the growth of pancreatic cancer cells.63 Altogether, these data imply the possibility of differentialregulation of glycolytic and oxidative phosphorylation pathways byunilateral and bilateral Rb patients. The gene discussed is RB1; the disease is familial pancreatic carcinoma.