<qa>  Prior malignant disease is treated within 3 years prior to entry, except in situ breast cell carcinoma1. Prior malignant disease other than GIST within 3 years prior to entry, with the exception of in situ breast cell carcinoma or in situ carcinoma of the cervix or basocellular carcinoma or spinocellular carcinoma or bladder neoplasm, treated at least 6 months before and with no evidence of relapse. 