Immutep (NASDAQ: IMMP) ends lung trial, extends cash runway
Rhea-AI Filing Summary
Immutep Limited reported mixed Q4 FY26 progress across its oncology and autoimmune pipelines alongside detailed cash flow data. A pooled analysis of five efti trials in 592 cancer patients showed increased absolute lymphocyte counts and a 7.7‑month median overall survival advantage for ALC responders.
The Phase III TACTI‑004 lung cancer trial was discontinued after an interim futility analysis, with objective response rates of 42.9% for efti versus 55.1% for control; a root cause review, including manufacturing aspects, continues. In contrast, INSIGHT‑003 showed median overall survival of 30.9 months, EFTISARC‑NEO met its primary immune‑activation objective and gained FDA orphan drug designation, and AIPAC‑003 in metastatic breast cancer completed follow‑up.
First‑in‑human IMP761 demonstrated favourable safety, pharmacodynamic activity and a pharmacokinetic profile supporting four‑weekly dosing. Cash, cash equivalents and term deposits were approximately A$68.87 million at 30 June 2026, about A$29.2 million above budget, and cost‑reduction measures are expected to support a cash runway extending well into H1 CY2028.
Positive
- IMP761 Phase I showed favourable safety, pharmacodynamic activity and four‑weekly dosing potential, with the 7 mg/kg dose achieving statistically significant inhibition in skin blood perfusion (p = 0.029), supporting further development for T‑cell‑mediated autoimmune diseases.
- Strong liquidity with cash, cash equivalents and term deposits of A$68.87 million at 30 June 2026, about A$29.2 million above the FY2026 budget, and cost‑reduction measures supporting an expected cash runway well into H1 CY2028.
Negative
- Phase III TACTI‑004 in 1L NSCLC was discontinued after an interim futility analysis, where objective response rates were 42.9% for efti versus 55.1% for control, leading to an expensive trial wind‑down and root cause review.
- Net cash used in operating activities surged to A$38.9 million in Q4 FY26, driven by elevated R&D spending of A$22.0 million on TACTI‑004 and a US$10 million repayment to Dr. Reddy’s, materially increasing quarterly cash burn.
Filing Explained
Novartis’ August 9 termination ends a non-revenue license while transferring jointly owned LAG-3 patent interests to Immutep.
As a Form 6-K interim report, this filing furnishes Immutep’s activities and cash-flow report for the quarter ended
After termination, Novartis must assign its ownership interest in jointly owned LAG-3 patents arising from the collaboration to Immutep S.A.S.; the filing says the license generated no revenue and that no further milestone or royalty payments are anticipated.
For the quarter, the Appendix 4C reports
The Appendix’s 1.64-quarter funding estimate is a mechanical figure based on quarter-end available funding and that quarter’s operating outflow, which the company says is not expected to continue; its separate forecast extends cash reach into the first half of calendar 2028.
The remaining TACTI-004 root-cause review is expected to produce additional results in Q3 calendar 2026, and the proposed neoadjuvant breast-cancer trial remains on hold pending that review.
Key Figures
Key Terms
interim futility analysis regulatory
objective response rate medical
LAG-3 agonist antibody medical
Forschungszulage regulatory
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