Exhibit 99.1 ASX/Media Release Immutep’s Efti in Combination with KEYTRUDA® Generates Excellent Overall Survival Benefit in Patients with Metastatic Non-Small Cell Lung Cancer • Median Overall Survival reaches 35.5 months in first-line treatment of metastatic non-small cell lung cancer patients expressing PD-L1 (TPS >1%), 23.4 months in patients with low PD-L1 expression (TPS 1-49%), and has not been reached in patients with high PD-L1 expression (TPS >50%), exceeding expectations • Promising Overall Surviv ...