
Drug-drug and disease-drug interactions in elderly patients with cancer are significant; 33% of elderly patients who are taking 3 or more medications are rehospitalized within 6 months of a hospital discharge. "A better index of predicting tolerance to chemotherapy in the elderly is crucial," said Mihaela Popa, MD, Moffitt Cancer Center, Tampa, Florida. Tolerance to chemotherapy among older patients with cancer may be affected by multiple chronic conditions requiring multiple medications and aging-related alterations that induce changes in drug distribution, she said.