Vion Pharmaceuticals announced the interim data results of its pivotal phase II trial of cloretazine, an anticancer agent drug that is intended to treat elderly patients with de novo poor-risk acute myelogenous leukemia (AML) today. 35 percent of the 85 patients evaluated in the study responded to the drug treatment, and 90 percent of those responses occurred after the first induction treatment.

“While follow-up is still ongoing, the median of overall survival for responders was 6.3 months (1.7-16.4 months) and for all patients was 3.2 months (0.1-16.4 months). The induction death rate within 30 days of first induction treatment was 14 percent. The majority of first induction deaths were either due to progression of disease or infection.”

In a Vion Pharmaceuticals press release, Dr. Gary Schiller, Professor of Medicine at the David Geffen School of Medicine, and a lead investigator on the study, said “The responses observed in this trial represent a clinically meaningful outcome for many of these difficult-to-treat AML patients. As a single-agent, single-infusion therapy, Cloretazine has the potential to be an important new treatment option for older patients with poor-risk AML.”

Alan Kessman, Chief Executive Officer of Vion Pharmaceuticals, said the company plans to file an application for new drug approval with the FDA some time this year.

AML is the most common type of leukemia, and more than 11,900 new cases occur in the United States each year, mostly in older adults. My grandmother died from this cancer when she was only 63, so I know she could have had many more good years in her life, had there been an effective treatment available. So here is another example of the kind of drug research that could potentially perform miracles.