EC145 is a drug that is specifically designed to enter cancer cells via the folate vitamin receptor (FR) that is not generally found on normal cells. Experimental evidence shows that this target receptor is expressed on virtually all ovarian cancers. Early clinical evidence in a small number of Phase I participants, in a subset of participants in a completed single-arm Phase II study, and interim data from an ongoing randomized Phase 2 study (PRECEDENT) suggests that EC145 may have antitumor effect in women with platinum-resistant ovarian cancer and that EC145 alone and in combination with PLD is generally well-tolerated. This evidence suggests that EC145 may be useful as chemotherapy against platinum-resistant ovarian cancer.