Immutep (ASX:IMM) said its phase 2b trial evaluating eftilagimod alpha in combination with Keytruda for patients with head and neck squamous cell cancer showed "strong" overall survival, progression-free survival, and durability, according to a Thursday filing with the Australian bourse.
The 12-month overall survival rate was 67%, well above historical controls, while the interim median duration of response was 9.3 months, the filing said. The median overall survival has not yet been reached.
The Tacti-003 study also found the combination therapy continues to be well-tolerated, with no new safety concerns identified, the filing said.
The biotechnology company's shares rose nearly 3% in afternoon trade Thursday.
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