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D-1553

Phase 1

Solid Tumor, Adult | Small molecule | Oncology |Merck & Company, Inc.|Last Updated: Mar 18, 2025

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 Enrollment180
FDA Designations
No designations recorded
Clinical Trials (1)
NCT IDTitlePhaseStatusEnrollmentVelocityDesignStartCompletionLast UpdatedSitesCountries
NCT04585035Study to Evaluate D-1553 in Subjects With Solid TumorsPHASE1 ACTIVE NOT_RECRUITING 180Oct 2, 2020Dec 1, 2025Mar 18, 202525 United States, Australia +2
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Study Endpoints
Primary Endpoints
Subject incidence of Dose-limiting toxicities (DLT)
through out the DLT period, approximately 21 days
Number of subjects participants with adverse events
Through study completion, approximately 3 years
Plasma concentration of D-1553 as a single agent or in combination with other therapies in subjects wiht advanced or metastatic solid tumors with KRas G12C mutation.
Through study completion, approximately 3 years
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Study Design & Arms
AllocationNON_RANDOMIZED
MaskingNONE
ModelSEQUENTIAL
PurposeTREATMENT
Treatment Arms
ArmTypeDescription
Dose escalation of D-1553 monotherapyEXPERIMENTALPhase 1a will evaluate up to 7 sequential cohorts with different doses of D-1553 to determine safety, tolerability, MTD and RDE in patients with solid tumors with KRasG12C mutation.
Dose combination of D-1553 with other therapiesEXPERIMENTALPhase 1b will determine the MTD of D-1553 in combination treatment in subjects with advanced or metastatic NSCLC, CRC and other solid tumors. There are multiple groups in Phase 1b for different tumor types and treatment combinations to evaluate safety, MTD and RP2D.
Phase 2 of D-1553 monotherapy and combination therapiesEXPERIMENTALThe Phase 2 portion is a multi-arm, parallel, open label study to evaluate the efficacy of D- 1553 single agent and combination treatments in subjects with advanced or metastatic solid tumors with KRas G12C mutation. Enrollment into phase 2 will be opened after confirmation of the recommended phase 2 dose.
Interventions
NameTypeDescription
D-1553DRUGD-1553 is a novel, targeted KRasG12C inhibitor that is being developed as a potential oral agent for advanced or metastatic solid tumors with KRasG12C mutation.
D-1553 in combination with Drug: pembrolizumab, Drug:KEYTRUDA® , Drug: cetuximab, Drug: otherDRUGStandard treatment of solid tumor, NSCLC or CRC
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Eligibility Criteria
Age Range18 Years — N/A
SexALL
Healthy VolunteersNo
Study Sites25

Inclusion criteria * Subject with histologically proven, locally advanced, unresectable and/or metastatic solid tumor, for which no standard treatment is available, or the subject is refractory to or intolerant of existing standard treatment. * Subject has KRasG12C mutation in tumor tissue or other...

Countries:United StatesAustraliaSouth KoreaTaiwan
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Recent Changes (Last 90 Days)
LOWMay 24, 2026NCT04585035studyFirstPostDate: changed