- For ovarian, fallopian tube, and peritoneal cancers only: platinum-resistant, defined as =< 183 days from the date of the most recent dose of chemotherapy containing either carboplatin or cisplatin until the first evidence of cancer recurrence or progression either symptoms directly attributable to cancer, radiographic recurrence of cancer, or cancer antigen 125 (CA-125) > 70, confirmed >= 7 days later (confirmation of elevated CA-125 may be beyond 183 days and still count as platinum-resistant)