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CTRI Number  CTRI/2025/03/082306 [Registered on: 13/03/2025] Trial Registered Prospectively
Last Modified On: 15/06/2026
Post Graduate Thesis  No 
Type of Trial  Interventional 
Type of Study   Drug
Biological
Other (Specify) [Placebo]  
Study Design  Randomized, Parallel Group, Placebo Controlled Trial 
Public Title of Study   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) 
Scientific Title of Study   TACTI-004, a double-blinded, randomized phase 3 trial in patients with advanced/metastatic non-small cell lung cancer (NSCLC) receiving eftilagimod alfa (MHC class II agonist) in combination with pembrolizumab (PD-1 antagonist) and chemotherapy. 
Trial Acronym  TACTI-004 (IMP321-P026) ; Keynote-F91 
Secondary IDs if Any  
Secondary ID  Identifier 
2024-513621-23-00  EudraCT 
TACTI-004, version 1.1 dated 06 Sep 2024  Protocol Number 
 
Details of Principal Investigator or overall Trial Coordinator (multi-center study)  
Name  Dr Shekhar Dawkhar 
Designation  Senior Director 
Affiliation  Fortrea Development India Private Limited 
Address  Fortrea Development India Private Limited,Building No.1, Unit No. 601, Raheja Mindspace, Plot Nos. Gen,2,1, D-F at MIDC Trans Thane Creek Industrial Area, Shiravane

Mumbai (Suburban)
MAHARASHTRA
400706
India 
Phone  7506653414  
Fax    
Email  Shekhar.Dawkhar@fortrea.com  
 
Details of Contact Person
Scientific Query
 
Name  Dr Shekhar Dawkhar 
Designation  Senior Director 
Affiliation  Fortrea Development India Private Limited 
Address  Fortrea Development India Private Limited,Building No.1, Unit No. 601, Raheja Mindspace, Plot Nos. Gen,2,1, D-F at MIDC Trans Thane Creek Industrial Area, Shiravane


MAHARASHTRA
400706
India 
Phone  7506653414  
Fax    
Email  Shekhar.Dawkhar@fortrea.com  
 
Details of Contact Person
Public Query
 
Name  Dr Shekhar Dawkhar 
Designation  Senior Director 
Affiliation  Fortrea Development India Private Limited 
Address  Fortrea Development India Private Limited,Building No.1, Unit No. 601, Raheja Mindspace, Plot Nos. Gen,2,1, D-F at MIDC Trans Thane Creek Industrial Area, Shiravane


MAHARASHTRA
400706
India 
Phone  7506653414  
Fax    
Email  Shekhar.Dawkhar@fortrea.com  
 
Source of Monetary or Material Support  
Fortrea Development India Private Limited,Building No. 1, Unit No.601,Raheja Mindspace, Plot Nos.Gen/2/1/D/E/F at MIDCTTC Industrial Area,Shiravane,Nerul,Navi Mumbai, Maharashtra,400706,India 
 
Primary Sponsor  
Name  Immutep S.A.S. 
Address  Parc Les Algorithmes,Bâtiment 7- Le Pythagore, Route de l’Orme - RD128 91190 SAINT-AUBIN, France 
Type of Sponsor  Pharmaceutical industry-Global 
 
Details of Secondary Sponsor  
Name  Address 
Fortrea Development India Private Limited Building No Unit No Raheja Mindspace  Fortrea Development India Private Limited, Building No. 1, Unit No. 601, Raheja Mindspace Plot Nos. Gen,2,1, D-F at MIDC Trans Thane Creek Industrial Area, Shiravane 
 
Countries of Recruitment     Argentina
Australia
Austria
Belgium
Brazil
Canada
Chile
Croatia
Georgia
Germany
Greece
Hungary
India
Ireland
Italy
Latvia
Lithuania
Malaysia
Mexico
Poland
Portugal
Romania
Spain
Turkey
United Kingdom
United States of America
Bulgaria  
Sites of Study
Modification(s)  
No of Sites = 10  
Name of Principal Investigator  Name of Site  Site Address  Phone/Fax/Email 
Dr Sandip Kumar Barik   All India Institute of Medical Sciences  Dept. of Radiation Oncology,Sijua, Patrapada, Bhubaneswar-751019
Khordha
ORISSA 
9450381454

sandip.barik1@gmail.com 
Dr Swaminathan Ganapathi Raman  Cancare Foundation The Voluntary Health Services  SH,49A,Pallipattu,Taramani,Chennai-600113
Chennai
TAMIL NADU 
9025260160

crrt.onco@gmail.com 
Dr Kalyan Kusum Mukherjee  Chittaranjan National Cancer Institute  37 S.P. Mukherjee Road, Kolkata-700026
Kolkata
WEST BENGAL 
033 24759313

kkmukherjee@cnci.org.in 
Dr Rejiv Rajendranath  Geri Care Hospitals  No 8, Dr Nair Road, T Nagar, Chennai 600017
Chennai
TAMIL NADU 
9840978491

rejivr@yahoo.co.in 
Dr Govind Babu  Healthcare Global Enterprises Limited  8, HCG Towers, P Kalinga Rao Road, Sampangi Ram Nagar, Bangalore 560027
Bangalore
KARNATAKA 
9845072940

kglaugh@gmail.com 
Dr Bipinesh Sansar  Mahamana Pandit Madan Mohan Malaviya Cancer Centre  Department of Medical Oncology,OPD No:29, Ground Floor,DNT Block,Sundar Bagiya, Near Nariya Gate, Banaras Hindu University Campus
Varanasi
UTTAR PRADESH 
8002583913

Bipinesh04@yahoo.co.in 
Dr Mohammad Azam  Maulana Azad Medical College Associated Lok Nayak Hospital  2, Bahadur Shah Zafar Marg, New Delhi 110002
New Delhi
DELHI 
7080178424

drazamdelhi@gmail.com 
Dr Sandeep Kumar Jasuja  R.K. Birla Cancer Centre, SMS Medical College and Hospital  Jawahar Lal Nehru Marg, Jaipur, 302004
Jaipur
RAJASTHAN 
9660121475

sandeepjasuja99@gmail.com 
Dr Anoop TM  Regional Cancer Centre  Medical College Campus, Trivandrum, Kerala - 695011
Thiruvananthapuram
KERALA 
9447134973

dranooptm@gmail.com 
Dr Vijay Maruti Patil  Sunact Cancer Institute  4th floor, Tieten Medicity, Kasarvadavali, Ghodbunder road,Thane (W.)- 400615
Thane
MAHARASHTRA 
8655313412

vijaypgi@gmail.com 
 
Details of Ethics Committee
Modification(s)  
No of Ethics Committees= 10  
Name of Committee  Approval Status 
Ethics Committee S.M.S. Medical College and Attached Hospitals  Submittted/Under Review 
HCG Central Ethics Committee  Approved 
Human Ethics Committee RCC  Submittted/Under Review 
IEC - Geri Care Hsopitals  Approved 
Institutional Ethics Committee Chittaranjan National Cancer Institute  Approved 
INSTITUTIONAL ETHICS COMMITTEE MAMC, MAULANA AZAD MEDICAL COLLEGE  Submittted/Under Review 
Institutional Ethics Committee The Voluntary Health Services  Submittted/Under Review 
Institutional Ethics Committee, AIIMS  Submittted/Under Review 
Instiutional ethics committee MPMMCC & HBCH  Submittted/Under Review 
Vedant Hospital Institutional Ethical Committee  Approved 
 
Regulatory Clearance Status from DCGI  
Status 
Approved/Obtained 
 
Health Condition / Problems Studied  
Health Type  Condition 
Patients  (1) ICD-10 Condition: C349||Malignant neoplasm of unspecifiedpart of bronchus or lung,  
 
Intervention / Comparator Agent  
Type  Name  Details 
Intervention  efti + Standard of Care arm Combination of efti, pembrolizumab (KEYTRUDA®) and histology-based platinum doublet chemotherapy  Biological: eftilagimod alfa (other names: IMP321, LAG-3Ig, efti, eftilagimod alpha), 30 mg of efti every 2 weeks subcutaneously for the first 6 months, thereafter every 3 weeks for up to 24 months in total /// Biological: Pembrolizumab (KEYTRUDA®) 200 mg pembrolizumab (KEYTRUDA®) every 3 weeks i.v. for up to approximately 24 months /// Drug: carboplatin plus paclitaxel: For patients 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 /// Drug: cisplatin or carboplatin + pemetrexed For patients 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  
Comparator Agent  Placebo Comparator: Placebo + Standard of Care arm Combination of efti-matching placebo, pembrolizumab (KEYTRUDA®) and histology-based platinum doublet chemotherapy  Placebo: efti-matching placebo every 2 weeks subcutaneously for the first 6 months, thereafter every 3 weeks for up to 24 months in total /// Biological: Pembrolizumab (KEYTRUDA®), 200 mg pembrolizumab (KEYTRUDA®) every 3 weeks i.v. for up to approximately 24 months /// Drug: carboplatin plus paclitaxel: For patients 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 /// Drug: cisplatin or carboplatin + pemetrexed: For patients 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  
 
Inclusion Criteria  
Age From  18.00 Year(s)
Age To  99.00 Year(s)
Gender  Both 
Details  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-small cell lung cancer (NSCLC) not amenable to curative treatment or locally available oncogenic driver mutation-based first-line therapy, treatment naïve for systemic therapy given for advanced/metastatic disease.

3.Archival tumor tissue sample or newly obtained core, or excisional biopsy of a tumor lesion not previously irradiated has been provided. Details pertaining to tumor tissue submission can be found in the Laboratory Manual.

4.Availability of programmed death-ligand 1 (PD-L1) biomarker result from central laboratory, using the Food and Drug Administration (FDA) approved Dako standardized diagnostic test (PD-L1 IHC 22C3 pharmDx).

5.Be greater than or equal to 18 years of age on the day of signing the informed consent.

6.Participants capable of producing sperm must follow specific contraception guidelines during and after the trial intervention period. The required contraception duration varies by drug. Participants must refrain from donating sperm and either remain abstinent or use condoms with an additional contraceptive method during intercourse with a nonpregnant partner. Contraceptive measures must adhere to local regulations, with stricter local label requirements taking precedence over the trial guidelines.

7.A participant of childbearing potential (POCBP) is eligible if they are not pregnant, confirmed by a negative pregnancy test before the first trial dose. They must not breastfeed during the trial or for a defined duration after the last dose of each drug. POCBPs must use highly effective contraception, with low user dependency or long-term abstinence during and after the trial intervention, and refrain from egg donation or storage. The required contraception duration varies by drug. Local contraception regulations must be followed.

8.An Eastern Cooperative Oncology Group (ECOG) performance status of 0 to 1 assessed within 7 days before randomization.

9.Expected survival greater than 3 months.

10.Evidence of measurable disease as defined by Response Evaluation Criteria in Solid Tumors Version 1.1 (RECIST 1.1) as determined by site.

11.Participants must have recovered from all AEs due to previous anticancer therapies to National Cancer Institute Common Terminology Criteria for Adverse Events (NCI CTCAE) version 5.0 less than or equal to Grade 1 or baseline. Participants with CTCAE less than or equal to Grade 2 neuropathy, alopecia, and elevated transaminases in case of liver metastases may be eligible.

12.Participants who received major surgery prior to trial start must have recovered adequately from the toxicity and/or complications from the intervention prior to starting trial treatment.

13.Participants who are hepatitis B surface antigen (HBsAg) positive are eligible if they have received hepatitis B virus (HBV) antiviral therapy for at least 4 weeks, and have undetectable HBV viral load prior to randomization.

14.Participants with history of hepatitis C virus (HCV) infection are eligible if HCV viral load is undetectable at screening and have completed curative antiviral therapy at least 4 weeks prior to randomization.

15.Human immunodeficiency virus (HIV) infected patients must be on anti-retroviral therapy (ART) and have a well-controlled HIV infection/disease.

16.Adequate organ function.

 
 
ExclusionCriteria 
Details  Participants are to be excluded from the trial at the time of screening for any of the following reasons:
1.Is expected to require any other form of systemic or localized antineoplastic therapy (other than the trial treatment) while on trial (including maintenance therapy with another agent for NSCLC, radiation therapy, and/or surgical resection).

2.Received prior radiotherapy within 2 weeks of start of trial intervention, or has radiation-related toxicities, requiring corticosteroids.

3.Participants whose tumor harbors any of the following actionable molecular alterations:
a. Epidermal growth factor receptor (EGFR)-sensitizing (activating) mutation
b. Anaplastic lymphoma kinase (ALK) gene fusion positive (ALK translocation)
c. c-ROS oncogene 1 (ROS1) translocation

4.For any indication has received any of the following therapies
a. within 3 weeks prior to cycle 1 day 1: systemic cytotoxic chemotherapy, targeted small molecule therapy (e.g. kinase inhibitors), biological therapy, any other systemic cancer therapy, radiation therapy or had major surgery;
b. within 4 weeks prior to cycle 1 day 1 has been treated with an investigational agent or has used an investigational device, or is still a participant in the active phase of an investigational trial;
c. within 6 months prior to cycle1 day 1 received lung radiation therapy of greater than 30 Gray (Gy).

5.Has received any treatment as part of adjuvant, neoadjuvant therapy or definitive chemoradiation for the treatment of NSCLC within 12 months prior to the diagnosis of advanced/metastatic disease.

6. Received prior therapy with an anti-PD-1, anti-PD-L1, or anti-PD-L2 agent or with an agent directed to another stimulatory or coinhibitory T-cell receptor (e.g., cytotoxic T-lymphocyte-associated protein 4 (CTLA-4), OX40, CD137) or Lymphocyte Activation Gene 3 (LAG-3) targeting therapy (e.g., anti-LAG-3 antibodies).
Note: Prior treatment with an anti-PD-1, anti-PD-Ll, or anti-PD-L2 agent for nonmetastatic resectable NSCLC (e.g. in the neoadjuvant or adjuvant setting) or following definitive chemoradiation, is allowed as long as therapy was completed at least 12 months before diagnosis of metastatic NSCLC.

7.Prior high-dose chemotherapy requiring hematopoietic stem cell rescue.


8.Known active central nervous system (CNS) metastases and/or carcinomatous meningitis. Participants with previously treated brain metastases may participate provided they are radiologically stable (i.e., without evidence of progression) for at least 4 weeks as confirmed by repeat imaging performed during trial screening, are clinically stable and have not required steroid treatment for at least 14 days before the first dose of trial intervention.

9.Active infection requiring parenteral systemic therapy within 4 weeks prior to cycle 1 day 1 and/or significant acute or chronic infection in screening and/or on cycle 1 day 1.

10.Evidence of severe or uncontrolled cardiac disease within 6 months prior to first dose of trial treatment including: myocardial infarction, severe/unstable angina, ongoing cardiac dysrhythmias of NCI CTCAE version 5.0 Grade greater than or equal to 2, atrial fibrillation greater than Grade 2 not controlled by a pacemaker, coronary/peripheral artery bypass graft, symptomatic congestive heart failure (New York Heart Association (NYHA) III-IV), cerebrovascular accident including transient ischemic attack, or symptomatic pulmonary embolism.

11.History of (noninfectious) pneumonitis/interstitial lung disease that required steroids or has current pneumonitis/interstitial lung disease.

12.Has active autoimmune disease that has required systemic treatment in past 2 years (i.e., with use of disease modifying agents, corticosteroids or immunosuppressive drugs). Replacement therapy (e.g., thyroxine, insulin, or physiologic corticosteroid replacement therapy for adrenal or pituitary insufficiency) is not considered a form of systemic treatment and is allowed.

13.Diagnosis of immunodeficiency or is receiving chronic systemic steroid therapy (in dosing exceeding 10 mg daily of prednisone equivalent) or any other form of immunosuppressive therapy within 7 days prior to the first dose of trial intervention.

14.Concurrent active Hepatitis B (defined as HBsAg positive and/or detectable HBV DNA) and Hepatitis C virus (defined as anti-HCV Ab positive and detectable HCV RNA) infection.

15.HIV-infected patients with a history of Kaposi sarcoma and/or Multicentric Castleman Disease.

16.History of allogenic tissue/solid organ transplant.

17.Known additional malignancy that is progressing or has required active treatment within the past 3 years.

18.Has hypersensitivity to eftilagimod alfa and/or pembrolizumab (Greater than or equal to Grade 3) and/or any of its excipients.

19.Has hypersensitivity to any component of planned platinum-based doublet chemotherapy and/or any of its excipients.

20. Received a live or live-attenuated vaccine within 30 days before the first dose of trial
intervention. Administration of killed vaccines is allowed.

21. Has a life-threatening illness unrelated to cancer.

22. Has a history or current evidence of any condition, therapy, or laboratory abnormality that might confound the results of the trial, interfere with the participant’s participation for the full duration of the trial, or is not in the best interest of the participant to participate, in the opinion of the treating Investigator. 
 
Method of Generating Random Sequence   Computer generated randomization 
Method of Concealment   Centralized 
Blinding/Masking   Participant and Investigator Blinded 
Primary Outcome  
Outcome  TimePoints 
Overall survival
Progression-free survival per RECIST 1.1
 
Up to approximately 54 months 
 
Secondary Outcome  
Outcome  TimePoints 
Objective response rate as per RECIST 1.1  Up to approximately 54 months 
Adverse events (AEs), vital signs, physical examinations, 12-lead electrocardiograms (ECGs), and safety laboratory assessments  Up to approximately 27 months 
Time to response (TTR)  Up to approximately 54 months 
Duration of Response (DOR)  Up to approximately 54 months 
Progression-free survival on next line therapy (PFS2)  Up to approximately 54 months 
 
Target Sample Size   Total Sample Size="756"
Sample Size from India="58" 
Final Enrollment numbers achieved (Total)= "Applicable only for Completed/Terminated trials"
Final Enrollment numbers achieved (India)="Applicable only for Completed/Terminated trials" 
Phase of Trial   Phase 3 
Date of First Enrollment (India)   31/03/2025 
Date of Study Completion (India) Applicable only for Completed/Terminated trials 
Date of First Enrollment (Global)  31/03/2025 
Date of Study Completion (Global) Applicable only for Completed/Terminated trials 
Estimated Duration of Trial   Years="4"
Months="6"
Days="0" 
Recruitment Status of Trial (Global)
Modification(s)  
Open to Recruitment 
Recruitment Status of Trial (India)  Open to Recruitment 
Publication Details   N/A 
Individual Participant Data (IPD) Sharing Statement

Will individual participant data (IPD) be shared publicly (including data dictionaries)?  

Response - NO
Brief Summary  

The purpose of this study is to compare eftilagimod alfa (efti) in combination with pembrolizumab and chemotherapy versus placebo in combination with pembrolizumab and chemotherapy with respect to overall survival (OS) and progression-free survival (PFS) per Response Evaluation Criteria in Solid Tumors Version 1.1 (RECIST 1.1) among adults with metastatic non-small cell lung cancer (NSCLC).

The trial has a double-blind, randomized design. Subjects will be randomized 1:1 to receive either combination of efti, pembrolizumab and histology-based platinum doublet chemotherapy (E+SoC arm) or efti-matching placebo plus pembrolizumab in combination with histology-based platinum doublet

chemotherapy (Placebo+SoC arm).

 
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