With the initial attempt at salvage therapy, the median PFS was 3.5 months. The objective response rate (ORR) for these patients was 43.4%, with strict complete responses (9.2%), very good partial responses (11.8%), and partial responses (22.4%) all being achieved by patients. A significantly longer median OS of 29.9 months compared to 14.6 months for patients who did not achieve an objective response was associated with achieving a partial response or better with the first line of salvage therapy.