Recent Updates
Recently added Catalysts

eftilagimod alfa

Phase 3

Advanced/Metastatic Non-Small Cell Lung Cancer (NSCLC) | Monoclonal antibody | Oncology |Immutep Limited|Last Updated: Mar 18, 2026

Target and mechanism

Molecular targetLAG3
Target classVaccine Antigen
ModalityMonoclonal antibody

Also known as Eftilagimod Alfa (Efti)

Success Probability

Subscribe to view

Market & Valuation

Subscribe to view

Trial Design

RandomizedDouble-BlindPLACEBO_CONTROLLEDDMC
Total Trials1
Total Enrollment756

FDA Designations

FAST_TRACKORPHAN_DRUG

Clinical trial landscape

eftilagimod alfa · 2 trials · 5 indications

Phase 3 1Phase 2 1
NCT06726265Study of Eftilagimod Alfa (Efti) in Combination With Pembrolizumab and Chemotherapy Versus Placebo in Combination With Pembrolizumab and Chemotherapy in Participants With Metastatic Non-Small Cell Lung Cancer (NSCLC) (TACTI-004)Advanced/Metastatic Non-Small Cell Lung Cancer (NSCLC)
ACTIVE NOT_RECRUITING756 Analytics
PHASE3ACTIVE NOT_RECRUITING
Study of Eftilagimod Alfa (Efti) in Combination With Pembrolizumab and Chemotherapy Versus Placebo in Combination With Pembrolizumab and Chemotherapy in Participants With Metastatic Non-Small Cell Lung Cancer (NSCLC) (TACTI-004)
Advanced/Metastatic Non-Small Cell Lung Cancer (NSCLC)Unlock trial analytics

Study Endpoints

Primary Endpoints

Determination of Overall survival (OS)
Up to approximately 54 months
Determination of Progression free survival (PFS) per Response Evaluation Criteria in Solid Tumors Version 1.1 (RECIST 1.1)
Up to approximately 54 months
To determine pathological complete response (pCR) after neoadjuvant chemotherapy (NAC) and Efti treatment
From enrollment to the end of the study (5 years)

The number of pathological complete responses determined in surgical pathology report. The primary endpoint is pCR to NAC + efti. Simon's 2-stage design will be used. The null hypothesis that the true pCR rate is 0.08 (8%) will be tested against a one-sided alternative. In the first stage, 30 patients will be accrued. If there are 2 or fewer responses in these 30 patients, the study will be stopped. Otherwise, 20 additional patients will be accrued for a total of 50. The null hypothesis will be rejected if 8 or more responses are observed in 50 patients. This design yields a type I error rate of 0.0426 and power of 0.80 when the true pCR rate is 0.20 (20%).

Secondary Endpoints

Determination of Objective response rate (ORR) per RECIST 1.1
Up to approximately 54 months
Frequency of adverse events (AEs)
Up to approximately 27 months
Severity of adverse events (AEs) according to the United States National Cancer Institute Common Terminology Criteria for Adverse Events (NCI CTCAE), v5.0
Up to approximately 27 months
Unlock Study Endpoints

Study Design & Arms

AllocationRANDOMIZED
MaskingQUADRUPLE
ModelPARALLEL
PurposeTREATMENT

Treatment Arms

ArmTypeDescription
efti + Standard of Care armEXPERIMENTALCombination of efti, pembrolizumab (KEYTRUDA®) and histology-based platinum doublet chemotherapy
Placebo + Standard of Care armPLACEBO_COMPARATORCombination of efti-matching placebo, pembrolizumab (KEYTRUDA®) and histology-based platinum doublet chemotherapy
Efti + NAC RegimensEXPERIMENTALEftilagimod Alfa (Efti) will be administered subcutaneously at a dose of 30 mg beginning of week 1 of the trial for a total of 3 doses (week 1, 2 and 3). After 3 weeks, efti will be administered starting with week 4, every 2 weeks and combined with either TC or AC. NAC regimens: * Docetaxel-cyclophosphamide (TC) intravenous (i.v) every 3 weeks (q3w) x 4, or * Dose dense Adriamycin-cyclophosphamide (AC) i.v q2w x 4 followed by weekly paclitaxel IV X12 weeks (alternatively weekly nab-paclitaxel can be used per physician's preference if patient unable to tolerate paclitaxel due to infusion reaction). The NAC regimen will be determined by the treating physician prior to starting on this trial.

Interventions

NameTypeDescription
eftilagimod alfaBIOLOGICAL30 mg of efti every 2 weeks subcutaneously for the first 6 months, thereafter every 3 weeks for up to 24 months in total
carboplatin plus paclitaxelDRUGFor participants with squamous histology for 4 cycles (1 cycle = 3 weeks) as follows: every 3 weeks: carboplatin area under the curve (AUC) 5 or 6 in combination with paclitaxel 175 mg/m2 or 200 mg/m2
cisplatin or carboplatin + pemetrexedDRUGFor participants with nonsquamous histology for 4 cycles (1 cycle = 3 weeks) as follows: every 3 weeks: cisplatin 75 mg/m2 or carboplatin AUC 5 or 6 in combination with pemetrexed 500 mg/m2. After the initial 4 cycles, pemetrexed 500 mg/m2 maintenance therapy will be administered every 3 weeks
pembrolizumab (KEYTRUDA®)BIOLOGICAL200 mg pembrolizumab (KEYTRUDA®) every 3 weeks i.v. for up to approximately 24 months
PlaceboOTHERefti-matching placebo every 2 weeks subcutaneously for the first 6 months, thereafter every 3 weeks for up to 24 months in total
Eftilagimod Alfa (Efti)DRUGEftilagimod Alfa (Efti) will be administered subcutaneously at a dose of 30 mg beginning of week 1 of the trial for a total of 3 doses (week 1, 2 and 3). After 3 weeks, efti will be administered starting with week 4, every 2 weeks and combined with either TC or AC
Docetaxel-cyclophosphamide (TC) intravenous (i.v)DRUGTC will be administered at docetaxel 75mg/m2 IV and cyclophosphamide 600mg/m2 IV every 3 weeks for a total of 4 administrations starting on week 4 of the trial (weeks 4, 7,10, and 13). Docetaxel is administered over 60min (dilute in 250 mL NS or D5W to a final concentration of 0.3 to 0.74 mg/mL and administer over 60 minutes). Cyclophosphamide is administered over 30-60min (dilute in 250 to 500 mL NS or D5W and administer over 30 to 60 minutes after docetaxel). G-CSF support for TC is per institutional SOC guidelines. Efti is to be given always ≥ 30 minutes after TC is finished if both regimens are administered the same day.
Dose dense Adriamycin-cyclophosphamide (AC) i.vDRUGAC will be administered at doxorubicin 60mg/m2 and cyclophosphamide 600mg/m2 IV every 2 weeks for a total of 4 administrations starting week 4 of the trial (weeks 4, 6, 8 and 10): Doxorubicin is administered over 5 min (Dilute with NS to a final concentration of 2 mg/mL and administered as an IV bolus over three to five minutes into a free flowing IV infusion of NS or D5W). Cyclophosphamide is administered over 30-60min (Dilute in 250 to 500 mL NS or D5W and administer over 30 to 60 minutes). G-CSF support is per SOC/institutional guidelines. Paclitaxel is given weekly for a period of 12 weeks (weeks 12 to 23) at 80mg/m2 (Dilute with 250 to 500 mL NS or D5W (final concentration of 0.3 to 1.2 mg/mL) and administered per institutional guidelines). Alternatively nab-paclitaxel weekly can be used (if paclitaxel cannot be used due to allergic reaction). Efti is to be given always ≥ 30 minutes after AC or paclitaxel is finished if both regimens are administered the same day.
Unlock Study Design Details

Eligibility Criteria

Age Range18 Years to N/A
SexALL
Healthy VolunteersNo
Study Sites147

Inclusion Criteria Participants may be enrolled if they meet all of the following criteria at screening: 1. Willing to give written informed consent and to comply with the protocol. 2. Histologically- or cytologically-confirmed diagnosis of advanced or metastatic (stage IIIB/C or stage IV) non-sma...

Countries:United StatesArgentinaAustraliaAustriaBelgiumBrazilBulgariaCanadaChileCroatiaGeorgiaGermanyGreeceHungaryIndiaIrelandItalyLatviaLithuaniaMalaysiaPolandPortugalRomaniaSpainThailandTurkey (Türkiye)United Kingdom
Unlock Eligibility Criteria

Frequently asked questions about eftilagimod alfa

What is Eftilagimod Alfa used for?

Eftilagimod Alfa, also known as Efti, is an investigational drug being studied for the treatment of advanced or metastatic non-small cell lung cancer (NSCLC) and hormone receptor positive, HER2-negative breast cancer. It is currently in Phase 2 clinical development for these indications.

What does Eftilagimod Alfa target?

Eftilagimod Alfa is a small molecule being developed by Immutep Limited. It is being studied in combination with pembrolizumab and chemotherapy for metastatic NSCLC, and in patients with HR-positive, HER2-negative breast cancer. The specific molecular target has not been disclosed.

Who makes Eftilagimod Alfa?

Eftilagimod Alfa is being developed by Immutep Limited, a biopharmaceutical company traded under the ticker IMMP. The drug is currently in Phase 2 clinical trials for advanced or metastatic non-small cell lung cancer and breast cancer.

What phase is Eftilagimod Alfa in?

Eftilagimod Alfa is in Phase 2 clinical development. It has received Fast Track and Orphan Drug designations from the FDA. The drug is investigational and has not been approved for any use.

What clinical trials is Eftilagimod Alfa in?

Eftilagimod Alfa is being studied in two clinical trials. NCT06726265 is a Phase 3 trial in metastatic NSCLC with 756 participants, and NCT07102940 is a Phase 2 trial in HR-positive, HER2-negative breast cancer with 50 participants. Both trials are active or planned.

Is Eftilagimod Alfa the same as Efti?

Yes, Eftilagimod Alfa is also known as Efti. The drug is being developed by Immutep Limited under the brand name Efti, and it is currently in clinical trials for non-small cell lung cancer and breast cancer.