"We put together a model looking at the variety of treatment arms on this clinical trial, each of which included 600 patients," said Cohn. "Given the fact that the addition of the drug was associated with 3.8 months of additional survival without cancer, we set out to determine whether or not that benefit of survival was justified by the expense of the drug."
The model showed that standard chemotherapy for patients in the clinical trial would cost $2.5 million, compared to $78.3 million for patients who were treated with standard chemotherapy and bevacizumab, plus additional maintenance treatments of bevacizumab for almost one year.
Bevacizumab has been used in the treatment of recurrent ovarian cancer, and the U.S. Food and Drug Administration has approved it for the treatment of colorectal, lung, breast, brain (glioblastoma) and renal cell cancers.
Typically each treatment with bevacizumab costs $5,000, with most of those costs directly attributable to the cost of the drug, Cohn said.
Effectiveness was defined as months of progression-free survival, and costs were calculated as total costs per strategy. Cost-effectiveness strategies were defined as the cost per year of progression-free survival. Incremental cost-effectiveness ratio was defined as the costs per progression-free life-year saved.
"Ultimately, we found that if you reduced the drug cost to 25 percent of the baseline, it does become cost effective to treat patients with bevacizumab," said Cohn. "Or, if the survival could be substantially increased above the 3.8 months of progression-free survival, that could lead to cost-effective treatment for patients with advanced ovarian cancer."
Ovarian cancer is the most lethal gynecologic cancer, with almost 14,000 women expected to die from the disease this year, according to the American Cancer Society.
"It is anticipated that in the
|Contact: Eileen Scahill|
Ohio State University Medical Center