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Pembrolizumab

Phase 2

Lung Cancer, Non-Small Cell | Small molecule | Oncology |GSK plc|Last Updated: Feb 3, 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
RandomizedACTIVE_CONTROLLEDBiomarker
Total Trials2
Total Enrollment391
FDA Designations
No designations recorded
Clinical Trials (2)
NCT IDTitlePhaseStatusEnrollmentVelocityDesignStartCompletionLast UpdatedSitesCountries
NCT05565378A Platform Study of Novel Immunotherapy Combinations in Participants With Previously Untreated, Advanced/Metastatic Non-Small-Cell Lung CancerPHASE2 ACTIVE NOT_RECRUITING 351Oct 14, 2022Feb 26, 2027Jan 8, 202699 United States, Argentina +20
NCT06405230Evaluation of Programmed Death Ligand 1 (PDL1) Response to Treatment in Extracellular Vesicles (EVs), Patient-derived Organoid (PDOs)s and Immune-marker Positron Emission Tomography (PET) Scanning in Non-small Cell Lung Cancer (NSCLC)PHASE1 RECRUITING 40Dec 30, 2025Oct 10, 2029Feb 3, 20261 United Kingdom
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Study Endpoints
Primary Endpoints
Number of Participants with Treatment Emergent Adverse Events (TEAEs) and Serious Adverse Events (SAEs)
Up to 228 weeks
Number of Participants with TEAEs or SAEs leading to dose modifications or treatment discontinuation
Up to 228 weeks
Spearman's rank correlation coefficient between treatment-induced PDL1 modulation in, 1o PDOs and/or extracellular vesicles (EVs) and PET after treatment
Up to approximately 29 months

The primary endpoint is the correlation between "treatment-induced change in PDL1 in PDOs which will be evaluated as the ratio of PDL1 positive cells before and after treatment using flow cytometry and multiplex immunofluorescence analysis" AND/OR "treatment-induced change in PDL1 in EVs which will be evaluated as the ratio of PDL1 positive cells before and after treatment using flow cytometry and multiplex immunofluorescence analysis" and "changes in PET which will be evaluated as the percentage difference in PDL1-PET standard uptake volume (SUV) uptake in lesions from the baseline to on-treatment" using the formula for Spearman's rank correlation coefficient. The Spearmans rank correlation coefficient can take values from +1 to -1 where a value of +1 indicates a perfect positive association, a value of 0 indicates no association and a value of -1 indicates a perfect negative association.

Secondary Endpoints
Spearman's rank correlation coefficient between treatment-induced PDL1 modulation in 1o PDOs and tumour response to anti- Programmed death 1 (PD1) based first line (1L) advanced/metastatic NSCLC treatment
Up to approximately 34.5 months
Spearman's rank correlation coefficient between treatment-induced PDL1 modulation in EVs and tumour response to anti- Programmed death 1 (PD1) based first line (1L) advanced/metastatic NSCLC treatment
Up to approximately 34.5 months
Spearman's rank correlation coefficient between treatment-induced PDL1 modulation by PET and radiological tumour response to anti-PD1 based 1L advanced/metastatic NSCLC treatment
Up to approximately 34.5 months
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Study Design & Arms
AllocationRANDOMIZED
MaskingNONE
ModelPARALLEL
PurposeTREATMENT
Treatment Arms
ArmTypeDescription
Pembrolizumab MonotherapyACTIVE_COMPARATORParticipants will be administered with pembrolizumab as monotherapy in a fixed dose.
Dostarlimab MonotherapyEXPERIMENTALParticipants will be administered with dostarlimab as monotherapy in a fixed dose.
Substudy 1AEXPERIMENTALParticipants will be administered with dostarlimab in a fixed dose followed by belrestotug in a fixed dose (Dose A).
Substudy 1BEXPERIMENTALParticipants will be administered with dostarlimab in a fixed dose followed by belrestotug in a fixed dose (Dose B).
Substudy 1CEXPERIMENTALParticipants will be administered with dostarlimab in a fixed dose followed by belrestotug in a fixed dose (Dose C).
Substudy 2AEXPERIMENTALParticipants will be administered with dostarlimab, fixed dose belrestotug, and fixed dose nelistotug
Pembrolizumab ± Platinum-based chemotherapy doublet (PBCD)EXPERIMENTALParticipants will receive pembrolizumab with or without PBCD.
Dostarlimab ± PBCDEXPERIMENTALParticipants will receive dostarlimab with or without PBCD.
Interventions
NameTypeDescription
PembrolizumabDRUGPembrolizumab will be administered.
DostarlimabDRUGDostarlimab will be administered
BelrestotugDRUGBelrestotug will be administered.
NelistotugDRUGNelistotug will be administered.
Pemetrexed+ (carboplatin or cisplatin)DRUGPBCD consisting of pemetrexed+ (carboplatin or cisplatin) will be administered.
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Eligibility Criteria
Age Range18 Years — N/A
SexALL
Healthy VolunteersNo
Study Sites99

Inclusion Criteria: * Histologically or cytologically confirmed diagnosis of locally advanced unresectable NSCLC not eligible for curative surgery and/or definitive radiotherapy with or without chemotherapy or metastatic NSCLC (squamous or non squamous) * No prior systemic therapy for their locally...

Countries:United StatesArgentinaBelgiumBrazilFinlandFranceGermanyGreeceHungaryItalyJapanMexicoNetherlandsPolandPortugalSouth AfricaSouth KoreaSpainThailandTurkey (Türkiye)United Arab EmiratesUnited Kingdom
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Recent Changes (Last 90 Days)
LOWMay 26, 2026NCT06405230primaryCompletionDate: changed
LOWMay 26, 2026NCT05565378primaryCompletionDate: changed
LOWMay 24, 2026NCT06405230studyFirstPostDate: changed
LOWMay 24, 2026NCT05565378studyFirstPostDate: changed