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Pembrolizumab

Phase 3

Glioblastoma | Small molecule | Oncology |NovoCure Limited|Last Updated: May 1, 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
RandomizedDouble-BlindCONTROLLEDDMCBiomarker
Total Trials2
Total Enrollment781
FDA Designations
No designations recorded
Clinical Trials (2)
NCT IDTitlePhaseStatusEnrollmentVelocityDesignStartCompletionLast UpdatedSitesCountries
NCT06556563EF-41/KEYNOTE D58: Phase 3 Study of Optune Concomitant With Temozolomide Plus Pembrolizumab in Newly Diagnosed GlioblastomaPHASE3 RECRUITING 741Feb 3, 2025Apr 1, 2029May 1, 202693 United States, Canada +10
NCT03405792Study Testing The Safety and Efficacy of Adjuvant Temozolomide Plus TTFields (Optune®) Plus Pembrolizumab in Patients With Newly Diagnosed Glioblastoma (2-THE-TOP)PHASE2 ACTIVE NOT_RECRUITING 40Feb 23, 2018Dec 1, 2027Feb 6, 20261 United States
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Study Endpoints
Primary Endpoints
Overall survival
24 months

Overall survival (OS) is defined as the time from randomization to death due to any cause

Progression-free Survival Between the Groups From Time of Enrollment
Assessed up to 24 months

Time from enrollment to progression or death or censoring, whichever occurs first. The study team will use the one-sample log-rank test to compare PFS in the triple combination arm relative to the historical control arm to determine whether the triple combination treatment increases PFS in newly diagnosed GBM patients when compared to TTFields+TMZ historical control patients from the EF-14 study. Evaluability for progression free survival required participants to receive adjuvant TMZ, Optune and at least 1 dose of pembrolizumab.

Secondary Endpoints
Progression-Free Survival (PFS) per RANO 2.0 assessed by investigator
24 months
Number of Participants With Toxicities, Serious Adverse Events and/or Other Adverse Events Treated With Triple Combination Treatment
Assessed up to 24 months
Overall Survival (OS)
Assessed up to 5 years
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Study Design & Arms
AllocationRANDOMIZED
MaskingQUADRUPLE
ModelPARALLEL
PurposeTREATMENT
Treatment Arms
ArmTypeDescription
Treatment GroupEXPERIMENTAL -
Control GroupPLACEBO_COMPARATOR -
Optune System combined with Temozolomide (TMZ) + PembrolizumabEXPERIMENTALPatients with newly-diagnosed GBM who undergo maximal safe resection (biopsy alone is eligible) followed by chemoradiation consisting of concomitant TMZ daily and radiation therapy (RT) with minimal RT will be eligible for this trial. Four to six weeks after finishing chemoradiation, patients will start monthly cycles of adjuvant TMZ. Treatment with Optune will start at approximately the same time as the first cycle of adjuvant TMZ and continue until second disease progression or a maximum of 2 years. Within one week after starting Cycle 2 of adjuvant TMZ and Optune therapy, patients will begin open-label treatment with pembrolizumab every 3 weeks until first disease progression or unacceptable toxicities or 2 years, whichever comes first.
Historical ControlOTHERHistorical control of patients treated with Optune System combined with Temozolomide alone from the EF-14 study will be compared with the Optune System combined with Temozolomide (TMZ) + pembrolizumab
Interventions
NameTypeDescription
Optune® deviceDEVICEOptune® device delivering TTFields therapy at 200 kHz.
TemozolomideDRUGTemozolomide per approved labeling.
PembrolizumabDRUGPembrolizumab dose throughout this study is 200 mg IV Q3W for a maximum of 35 cycles.
PlaceboDRUGPlacebo (saline solution) dose throughout this study is 200 mg IV Q3W for a maximum of 35 cycles.
Temozolomide (TMZ)DRUGPatients will begin treatment with adjuvant TMZ at least 4 weeks but no more than 6 weeks from last dose of concomitant temozolomide or radiation therapy (the latter of the two). A minimum of 6 and maximum of 12 cycles of adjuvant TMZ will be given depending on tolerability and toxicity.
Optune SystemDEVICEPatients will undergo 24-months of planned treatment with Optune therapy.
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Eligibility Criteria
Age Range18 Years — N/A
SexALL
Healthy VolunteersNo
Study Sites93

Inclusion Criteria: 1. The participant (or legally acceptable representative) has provided documented informed consent for the study. 2. Be ≥ 18 years of age on day of providing informed consent. 3. Participant with new diagnosis of GBM according to World Health Organization (WHO) 2021 Classificati...

Countries:United StatesCanadaCzechiaFranceGermanyIsraelItalyJapanPolandSpainSwitzerlandUnited Kingdom
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Recent Changes (Last 90 Days)
LOWMay 26, 2026NCT06556563primaryCompletionDate: changed
LOWMay 24, 2026NCT06556563studyFirstPostDate: changed
LOWMay 24, 2026NCT03405792studyFirstPostDate: changed