All culture and treatment was for 48 hours. Cell viability assessed by AnnexinV and DAPI staining A - CLL patient cells (n=6), cultured in a) 5mM glucose media, b) glucose-free media and c) glutamine-free media+ 5mM glucose. B - CLL patient cells (n=4) cultured in glucose-containing and glucose-free media in the presence and absence 10µm chloroquine. C - CLL patient cells (n=3), cultured in glucose-containing and glucose-free media in the presence and absence for 10µm etomoxir. D – CLL patient cells (n=4) cultured in glucose containing or glucose-free media in the presence and absence of 10mM galactose or 2 methylpyruvate. All samples were normalized to viability of CLL patient cells cultured in 5mM glucose-containing media. E: CLL patient cells (n=7), cultured in glucose containing or glucose-free media, supplemented with 10mM galactose and treated with 5 mM metformin. *p <0.05 *** p <0.005****p <0.0001.