By Jake King

After declines in the first half of the week, shares of Threshold Pharmaceuticals (NASDAQ:THLD) rebounded on Thursday morning following an update on the company's ongoing Phase 2 trial of TH-302 (403 Trial) in soft tissue sarcoma. The drug in combination with doxorubicin demonstrated a median progression free survival (PFS) of 6.7 months, a median overall survival (OS) of 21.5 months, and an acceptable safety profile. In a single-arm component of the study (roughly half of the total patient population) patients continued treatment with TH-302 as a single agent following the doxorubicin combination treatment; median PFS was 3.7 months, and median OS was 18.0 months in the maintenance extension. The Phase 2 supports the ongoing Phase 3 '406 Trial', in which TH-302 plus doxorubicin is being compared to doxorubicin alone as a first-line soft tissue sarcoma treatment; interim data is expected in 1H13. That trial is being carried out under a Special Protocol Assessment with the FDA.

Threshold, however, bears the brunt of upcoming trial results from multiple competitors. Continue reading here.

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