Table 3:
Preclinical trials of ketogenic diets on cancer outcome
| Cancer (cell line) | Animal | Route | Diet Scheme | Effect of diet alone | Effect of diet with treatment | Ref |
|---|---|---|---|---|---|---|
| Breast (4T1) | BALB/C mice | SQ | 70% of AL of 2% CHO and 93.4% fat calories diet | Reduced tumor growth | Enhanced antitumor effect of metformin | (197) |
| Glioma (GL261 cells) | Male albino C57BL/6 mice | Orthotopic | AL 3% CHO and 72% fat calories diet | Prolonged survival | Synergy with irradiation | (3, 101) |
| Glioma (GL261) | Female albino C57BL/6 | Orthotopic | AL 3% CHO and 72% fat calories diet | Prolonged survival | Synergistic with whole brain irradiation | (3, 182) |
| Lung (NCI-H292 and A549 cells) | Female athymic-nu/nu mice | SQ | AL 1.6% CHO and 90% fat calories diet | No effect of KD alone on tumor volume or survival | Enhanced tumor response and survival with irradiation ± carboplatin | (5) |
| Medulloblastoma (cells from above mice) | NOD/SCID | SQ | AL 6:1 3.2% CHO and 75.1% fat paste diet | No effect on tumor growth | No effect on SMO inhibitor GDC-0449 antitumor activity | (37) |
| Neuroblastoma (SK-N-BE(2) and SH-SY5Y cells) | Female CD1-nu | SQ | AL or 2/3 AL KD with 8% CHO and 78% fat calories | CR KD slowed tumor growth and prolonged survival of both tumors. AL KD only slowed tumor growth and prolonged survival for SK-N-BE(2) tumors | Both diets slowed growth of KH-SY5Y tumors but not SK-N-BE(2) tumors during cyclophosphamide treatment | (118, 119) |
AL: ad libitum; CHO: carbohydrates; KD: ketogenic diet; SMO: smoothened gene, a component of the sonic hedgehog pathway.