Market Overview

Immutep Completes Recruitment for Stage 1 of Part B in TACTI-002 Study

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  • 23 patients with second line Non-Small Cell Lung Cancer (NSCLC) participating in Stage 1, Part B
  • Total of 87 patients out of up to 109 patients (80%) are enrolled and participating in the trial, with recruitment continuing for stage 2 of Part C at present
  • Further data from TACTI-002 expected throughout calendar year 2020

SYDNEY, Australia, Aug. 18, 2020 (GLOBE NEWSWIRE) -- Immutep Limited ((ASX: IMM, NASDAQ:IMMP) ("Immutep" or "the Company"), a biotechnology company developing novel immunotherapy treatments for cancer and autoimmune diseases, is pleased to report it has enrolled and safely dosed the last patient for stage 1 of Part B of its TACTI-002 Phase II study, completing recruitment of stage 1 of Part B.

Based on the study's Simon's two-stage clinical trial design, safety and efficacy data will be provided to the Data Monitoring Committee (DMC) for its review and recommendation regarding opening recruitment into stage 2 of Part B once all patients have undergone at least one tumour imaging after treatment.

TACTI-002 is being conducted in collaboration with Merck & Co., Inc., Kenilworth, NJ, USA (known as "MSD" outside the United States and Canada) and is evaluating the combination of Immutep's lead product candidate, eftilagimod alpha ("efti" or "IMP321") with MSD's KEYTRUDA® (pembrolizumab) in up to 109 patients with second line Head and Neck Squamous Cell Carcinoma (HNSCC) or NSCLC in first and second line.

TACTI-002 Recruitment
Recruitment details for each Part of TACTI-002 are below. At present, recruitment is ongoing for Stage 2 of Part C. Pending the DMC's recommendation, Immutep will consider opening stage 2 of Part B for recruitment.

  Stage 1 (N)
Actual/target
Stage 2 (N)
Actual / target
Recruitment
status
Part A (1st line NSCLC) 17/17 19/19 COMPLETE
Part B (2nd line NSCLC) 23/23 -/13 TBA
Part C (2nd line HNSCC) 18/18 10/19 ONGOING

About the TACT-002 Trial
TACTI-002 (Two ACTive Immunotherapies) is being conducted in collaboration with Merck & Co., Inc., Kenilworth, NJ, USA (known as "MSD" outside the United States and Canada). The study is evaluating the combination of efti with MSD's KEYTRUDA® (pembrolizumab) in up to 109 patients with second line head and neck squamous cell carcinoma or non-small cell lung cancer in first and second line.

The trial is a Phase II, Simon's two-stage, non-comparative, open-label, single-arm, multicentre clinical study that is taking place in up to 12 study centres across the U.S., Europe and Australia.

TACTI-002 is an all comer study in terms of PD-L1 status, a well-known predictive marker for response to pembrolizumab monotherapy especially in NSCLC. PD-L1 expression is typically reported in three groups for NSCLC: < 1%, 1-49% and ≥50% (Tumour Proportion Score or TPS). Patients with a high PD-L1 status are typically more responsive to anti-PD-1 monotherapy such as pembrolizumab, whereas those with low PD-L1 status are overall significantly less responsive. Pembrolizumab monotherapy is registered in the US and the EU for first-line NSCLC patients with a TPS score ≥1% (US) and ≥50% (EU), reflecting 65% and 30% of all first line NSCLC patients, respectively.

More information about the trial can be found on Immutep's website or on ClinicalTrials.gov (Identifier: NCT03625323).

About Immutep

Further information can be found on the Company's website www.immutep.com or by contacting:

Australian Investors/Media:
Catherine Strong, Citadel-MAGNUS
+61 (0)406 759 268; cstrong@citadelmagnus.com

U.S. Media:
Tim McCarthy, LifeSci Advisors
+1 (212) 915.2564; tim@lifesciadvisors.com

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