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HRO761

Phase 1

MSIhi or dMMR Advanced Unresectable or Metastatic Solid Tumors, Including Colorectal Cancers | Small molecule | Oncology |Novartis AG|Last Updated: Mar 24, 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 Enrollment123
FDA Designations
No designations recorded
Clinical Trials (1)
NCT IDTitlePhaseStatusEnrollmentVelocityDesignStartCompletionLast UpdatedSitesCountries
NCT05838768Study of HRO761 Alone or in Combination in Cancer Patients With Specific DNA Alterations Called Microsatellite Instability or Mismatch Repair Deficiency.PHASE1 ACTIVE NOT_RECRUITING 123Jun 27, 2023Aug 31, 2027Mar 24, 202628 United States, Belgium +13
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Study Endpoints
Primary Endpoints
Incidence and severity of Adverse Events (AEs) and Serious Adverse Events (SAEs)
at month 36

Month 36 is assumed to be study end. Incidence and severity of AEs and SAEs by treatment group, including changes in vital signs, electrocardiograms (ECGs) and laboratory results qualifying and reported as AEs.

Incidence of dose limiting toxicities (DLTs) of treatment (Escalation only)
at Day 28

A DLT is defined as an adverse event or abnormal laboratory value that is not primarily related to disease, disease progression, intercurrent illness/injury, or concomitant medications that occurs within the first 28 days of study treatment and meets a defined criteria.

Frequency of dose interuptions as a measure of tolerability
at month 36

Month 36 is assumed to be study end Number of dose interruptions by treatment group/arm as a measure of tolerability.

Frequency of dose discontinuations as a measure of tolerability
at month 36

Month 36 is assumed to be study end Number of dose discontinuations by treatment group/arm as a measure of tolerability.

Frequency of dose reductions as a measure of tolerability
at month 36

Month 36 is assumed to be study end Number of dose reductions by treatment group/arm as a measure of tolerability.

Secondary Endpoints
Overall Response Rate (ORR) per RECIST v1.1
at month 36
Disease Control Rate (DCR) per RECIST v1.1
at month 36
Progression Free Survival (PFS) per RECIST v1.1
at month 36
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Study Design & Arms
AllocationNON_RANDOMIZED
MaskingNONE
ModelSEQUENTIAL
PurposeTREATMENT
Treatment Arms
ArmTypeDescription
A: HRO761 single agentEXPERIMENTALphase Ib (Dose finding (Escalation and Optimization) and expansion)
B: HRO761 + pembrolizumabEXPERIMENTALphase Ib (Dose escalation and expansion)
C: HRO761 + irinotecanEXPERIMENTALphase Ib (Dose escalation and expansion)
Interventions
NameTypeDescription
HRO761DRUGTablet
pembrolizumabBIOLOGICALConcentrate for solution for infusion
irinotecanDRUGConcentrate for solution for infusion
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Eligibility Criteria
Age Range18 Years — 100 Years
SexALL
Healthy VolunteersNo
Study Sites28

Key Inclusion criteria: * Patients with advanced unresectable or metastatic MSIhi or MMR deficient (dMMR) solid tumors who have progressed after or are intolerant to prior standard therapy. * Arm A and C: Patients must have progressed on the most recent therapy for advanced disease including one...

Countries:United StatesBelgiumChinaFranceGermanyIsraelItalyJapanNorwaySingaporeSouth KoreaSpainSwedenTaiwanUnited Kingdom
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Recent Changes (Last 90 Days)
HIGHMay 26, 2026NCT05838768Enrollment: 327 → 123
LOWMay 24, 2026NCT05838768studyFirstPostDate: changed