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MK-8353

Phase 1

Solid Tumors | Small molecule | Oncology |Merck & Company, Inc.|Last Updated: Jul 27, 2023

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
UNCONTROLLEDBiomarker
Total Trials1
Total Enrollment30
FDA Designations
No designations recorded
Clinical Trials (1)
NCT IDTitlePhaseStatusEnrollmentVelocityDesignStartCompletionLast UpdatedSitesCountries
NCT03745989Study of MK-8353 + Selumetinib in Advanced/Metastatic Solid Tumors (MK-8353-014)PHASE1 COMPLETED 30Feb 22, 2019Mar 19, 2021Jul 27, 20235 United States, Canada +1
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Study Endpoints
Primary Endpoints
Number of Participants Experiencing Dose Limiting Toxicities
Cycle 1 (3-week Cycle) (Up to 3 weeks)

A dose limiting toxicity (DLT) is defined as any hematologic or non-hematologic toxicity ≥Grade 3 per National Cancer Institute (NCI) Common Terminology Criteria for Adverse Events (CTCAE) v4.0. The occurrence of any of the designated toxicities during Cycle 1 (3-week cycle) were considered a DLT, if assessed by the investigator to be possibly, probably, or definitely related to study treatment administration. The number of participants experiencing DLTs was assessed.

Number of Participants Experiencing Adverse Events
~90 days after last treatment dose (up to ~45 weeks)

An adverse event (AE) is any untoward medical occurrence in a clinical study participant, temporally associated with the use of study intervention, whether or not considered related to the study intervention. An AE can therefore be any unfavorable and unintended sign (including an abnormal laboratory finding), symptom, or disease (new or exacerbated) temporally associated with the use of a study intervention. The number of participants experiencing AEs was assessed.

Number of Participants Discontinuing Study Treatment Due to AEs
Up to ~33 weeks

An AE is any untoward medical occurrence in a clinical study participant, temporally associated with the use of study intervention, whether or not considered related to the study intervention. An AE can therefore be any unfavorable and unintended sign (including an abnormal laboratory finding), symptom, or disease (new or exacerbated) temporally associated with the use of a study intervention. The number of participants discontinuing study treatment due to AEs was assessed.

Secondary Endpoints
Area Under the Plasma Concentration-Time Curve for MK-8353 From Time 0 to 12 Hours
Study Days 1 and 4 of Cycle 1 (3-week cycle) at pre-dose and at 1, 2, 4, 6 hours, and between 8 and 12 hours post-dose
AUC0-12 for Selumetinib
Study Days 1 and 4 of Cycle 1 (3-week cycle) at pre-dose and at 1, 2, 4, 6 hours, and between 8 and 12 hours post-dose
Minimum Observed Plasma Concentration for MK-8353
Study Days 1 and 4 of Cycles 1 and 2 (3-week cycles). For Cycle 1, pre-dose and at 1, 2, 4, 6 hours, and between 8 and 12 hours post-dose; and for Cycle 2 pre-dose, and at 1 and 4 hours post-dose
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Study Design & Arms
AllocationNA
MaskingNONE
ModelSEQUENTIAL
PurposeTREATMENT
Treatment Arms
ArmTypeDescription
MK-8353 and Selumetinib Dose EscalationEXPERIMENTALParticipants will receive a combination MK-8353 and selumetinib for 4 days on and 3 days off until disease progression or discontinuation. MK-8353 will be escalated sequentially from 50 mg to 250 mg based on pharmacokinetic and safety data. Selumetinib will be escalated sequentially from 25 mg to 75 mg based on pharmacokinetic and safety data. Doses may be adjusted downward sequentially based on tolerability
Interventions
NameTypeDescription
MK-8353DRUGParticipants will receive MK-8353 orally twice daily (BID), escalated sequentially from 50 mg to 250 mg.
SelumetinibDRUGParticipants will receive selumetinib orally BID, escalated sequentially from 25 mg to 75 mg.
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Eligibility Criteria
Age Range18 Years — N/A
SexALL
Healthy VolunteersNo
Study Sites5

Inclusion Criteria: * Have a histologically- or cytologically-documented, locally-advanced or metastatic solid tumor by pathology report and have received, or been intolerant to, all treatment known to confer clinical benefit. * Provide an archival or newly obtained tumor tissue sample and blood sa...

Countries:United StatesCanadaSwitzerland
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