A CALGB-sponsored trial also evaluated the use of hydrazine sulfate as a treatment for patients with advanced nonsmall cell lung cancer.[4,15] In this trial, 266 patients received either hydrazine sulfate or placebo in addition to a multiple-drug chemotherapy regimen. No differences in survival, objective tumor response, anorexia, weight gain or loss, or nutritional status were observed between the hydrazine sulfate group and the placebo group. However, the quality of life of the patients who received hydrazine sulfate was found to be statistically significantly worse than that of the patients who received placebo.
The use of hydrazine sulfate as a treatment for patients with nonsmall cell lung cancer was also evaluated in an NCCTG-sponsored trial. In this trial, 243 patients were randomly assigned to receive either hydrazine sulfate or placebo in addition to a multiple-drug chemotherapy regimen. No statistically significant differences were found between the hydrazine sulfate group and the placebo group with respect to either survival or quality of life.
Another NCCTG-sponsored trial tested hydrazine sulfate alone versus placebo in the treatment of 127 patients with metastatic colorectal cancer. In this trial, the patients who received hydrazine sulfate had, on average, shorter survival than the patients who received placebo, a finding that was statistically significant. There were no statistically significant differences between the hydrazine sulfate group and the placebo group with respect to weight gain or loss, anorexia, or quality of life.
Four other clinical trials did find some objective evidence of benefit with hydrazine sulfate therapy.[12,13,16,17] These trials had either nutritional status or metabolic status as the primary endpoint. In a placebo-controlled, randomized trial involving 38 patients with advanced disease, hydrazine sulfate was found to improve the abnormal glucose metabolism seen in cancer patients. In another placebo-controlled, randomized trial that involved 101 patients with advanced cancer and weight loss, the use of hydrazine sulfate was associated with statistically significant improvements in appetite and either weight increase or weight maintenance. However, the higher average caloric intake observed in this study for patients treated with hydrazine sulfate compared with patients treated with placebo was not statistically significant. Two other clinical studies involving a total of 34 patients with either lung cancer or colon cancer found that hydrazine sulfate was able to reduce the body protein breakdown associated with cancer cachexia.[16,17] In view of the totality of evidence, the overall importance of the findings from these four clinical trials is not clear.
A search of the PDQ clinical trials database indicates that no clinical trials of hydrazine sulfate as a therapy for cancer are being conducted at this time.