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NT219

Phase 1

Head and Neck Cancer | Small molecule | Oncology |Purple Biotech Ltd.|Last Updated: Apr 6, 2026

Success Probability
Approval Probability 71%
TA Base Rate26%
Adjusted LOA41%
ML RiskLOW_RISK
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Market & Valuation
rNPV $3.2B
Market Size $9.4B
Revenue Basis $1.6B
Competitors 6
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Trial Design
CONTROLLEDDMCBiomarker
Total Trials1
Total Enrollment29
FDA Designations
No designations recorded
Clinical Trials (1)
NCT IDTitlePhaseStatusEnrollmentVelocityDesignStartCompletionLast UpdatedSitesCountries
NCT06919666NT219 Combined With Standard of Care Biologic Therapy in Recurrent/Metastatic Head and Neck Squamous Cell CarcinomaPHASE1 ACTIVE NOT_RECRUITING 29Jun 12, 2025Feb 1, 2031Apr 6, 20262 United States
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Study Endpoints
Primary Endpoints
Objective Response Rate following treatment with NT219 plus pembrolizumab (cohort 1) or cetuximab (cohort 2).
Tumor assessments will be completed every 9 weeks from enrollment/baseline until the final study visit. Additional imaging can occur at 60 days post-treatment +/- 7 days at the discretion of the investigator.

Objective response rate is defined as the percentage of participants who have confirmed best response of complete response or partial response as determined by the investigator. Response will be assessed by RECIST 1.1 or iRECIST (when applicable, cohort 1 only) at baseline (within 28 days of C1D1) and every 9 weeks +/- 10 days while on treatment. All scans during study intervention will be repeated using the same method (CT, PET-CT, or MRI).

Secondary Endpoints
Rate of occurence of dose-limiting toxicity (DLT) within the first 21-day cycle of NT219 plus pembrolizumab (Cohort 1 only)
DLTs will be collected from C1D1 to C1D21 of NT219 plus pembrolizumab
Occurence of treatment-emergent and treatment-related adverse events (AEs) in patients treated with NT219 plus pembrolizumab (cohort 1) or cetuximab (cohort 2).
AEs will be collected from C1D1 until the final study visit
Progression-free survival (PFS) in patients treated with NT219 plus pembrolizumab (Cohort 1) or cetuximab (Cohort 2)
First dose of NT219 plus pembrolizumab (Cohort 1) or cetuximab (Cohort 2) until progressive disease, death, or loss of follow-up.
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Study Design & Arms
AllocationNON_RANDOMIZED
MaskingNONE
ModelSEQUENTIAL
PurposeTREATMENT
Treatment Arms
ArmTypeDescription
Cohort 1 NT219 plus pembrolizumabEXPERIMENTALCohort 1 will enroll patients who have not received PD-1 inhibition in the relapsed/metastatic setting or have received and derived significant clinical benefit from PD-1 inhibition as their first line of therapy. Patients will be treated with NT219 75 mg/kg IV once weekly plus pembrolizumab 200 mg once every three weeks. The first 6 patients will be required to clear a DLT window of 21 days as an abbreviated safety lead-in.
Cohort 2 NT219 plus cetuximabEXPERIMENTALCohort 2 will enroll patients who had progression of disease without clinical benefit from PD-1 inhibition or have received ≥2 prior lines of therapy and are good candidates for cetuximab. Patients will be treated with NT219 75mg/kg IV once weekly plus cetuximab given as an initial loading dose of 400 mg/m2 followed by maintenance dosing of 250 mg/m2 once weekly.
Interventions
NameTypeDescription
NT219DRUGNT219 is a first-in-class small molecule targeting IRS 1/2 and STAT3. Preclinical studies in melanoma have shown NT219 induces PD-L1 expression in vitro and in vivo, resulting in increased efficacy of PD-1 inhibition via synergistic antitumor effect in PD-1 sensitive models and restoration of sensitivity in resistant models. NT219 also synergized with cetuximab in vitro and reversed cetuximab resistance in a head and neck cancer xenograft platform.
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Eligibility Criteria
Age Range18 Years — N/A
SexALL
Healthy VolunteersNo
Study Sites2

Inclusion Criteria: * Age 18 and over. * ECOG PS 0-2. * Incurable head and neck squamous cell carcinoma of mucosal origin (oral cavity, tongue, oropharynx, pharynx, larynx, sinonasal and non-EBV-driven NPC). * Adequate organ and marrow function as defined by routine lab testing including calculated...

Countries:United States
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Competitive Landscape -Head and Neck Cancer 156 trials
CompanyTickerTrialsLead PhaseDrugs
AstraZeneca PLCAZN9PHASE3Monalizumab, Cetuximab, volrustomig, Volrustomig, Cisplatin
GSK plc Sponsored ADRGSK3PHASE3Dostarlimab, Belrestotug, Nelistotug, Remzistotug, Niraparib
Merck & Co., Inc.MRK3PHASE3Pembrolizumab, Cisplatin /m^2, pembrolizumab, Cisplatin, Docetaxel
Johnson & JohnsonJNJ4PHASE3JNJ-90301900, Cetuximab, Amivantamab, Pembrolizumab, Carboplatin
Pfizer Inc.PFE6PHASE2tisotumab vedotin, pembrolizumab, carboplatin, cisplatin, Palbociclib
Regeneron Pharmaceuticals, Inc.REGN4PHASE2cemiplimab, Platinum Doublet, fianlimab, fianlimab+cemiplimab, Cemiplimab
PDS Biotechnology Corp.PDSB1PHASE3Combination Treatment of PDS0101 and Pembrolizumab, Pembrolizumab Monotherapy
Exelixis, Inc.EXEL4PHASE2Zanzalintinib, Pembrolizumab, cabozantinib, atezolizumab, Nivolumab
Merus B.V.MRUS4PHASE3Petosemtamab, Pembrolizumab, MCLA-129, Osimertinib, Chemotherapy
Bristol-Myers Squibb CompanyBMY3PHASE2Nivolumab, Relatlimab, Ipilimumab, Intratumoral Ipilimumab, BMS-986340
Bicara Therapeutics Inc.BCAX3PHASE2Ficerafusp alfa, Nivolumab, Pembrolizumab, BCA101
Gilead Sciences, Inc.GILD2PHASE2Domvanalimab, Zimberelimab, Paclitaxel, Carboplatin
Inhibrx Biosciences, Inc.INBX2PHASE2INBRX-106, Pembrolizumab, INBRX-106 - Hexavalent OX40 agonist antibody, pembrolizumab, Carboplatin AUC-5
Incyte CorporationINCY1PHASE2Retifanlimab, INCAGN02385, INCAGN02390
BioNTech SE Sponsored ADRBNTX1PHASE2BNT113, Pembrolizumab
Coherus Oncology, Inc.CHRS4PHASE2Toripalimab, Carboplatin, Cisplatin, Paclitaxel, Docetaxel
ALX Oncology Holdings, Inc.ALXO3PHASE2evorpacept, pembrolizumab, Cisplatin/Carboplatin; 5FU, ALX2004
ImmunityBio IncIBRX2PHASE2N-803 + Pembrolizumab, PD-L1 t-haNK, Cetuximab, NAI
Summit Therapeutics IncSMMT2PHASE3Ivonescimab /kg, Ligufalimab, Pembrolizumab, Ivonescimab
IO Biotech, Inc.IOBT1PHASE2IO102-IO103, Pembrolizumab KEYTRUDA
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Recent Changes (Last 90 Days)
MEDIUMMay 26, 2026NCT06919666Status: RECRUITING → ACTIVE_NOT_RECRUITING
LOWMay 24, 2026NCT06919666studyFirstPostDate: changed