Duration of hematologic response (sustained responses).

The duration of response is censored for 27 of the 70 patients who had a sustained hematologic response; 3 of them discontinued imatinib therapy to undergo stem cell transplantation, 1 withdrew consent to participate after about 1 year, and the remaining 23 patients are still in response between 7 and 16 months after response was first recorded. The estimated percentage of patients without disease progression at 6 months is 68% (95% CI, 57%-79%). The estimated median duration of response is 10 months (95% CI, 7.2-12.6 months).