Recent Updates
Recently added Catalysts

EOS301984

Phase 1

Advanced Solid Tumors | Small molecule | Oncology |iTeos Therapeutics, Inc.|Last Updated: Aug 13, 2025

Target and mechanism

Molecular targetPD-1
ModalitySmall molecule

Success Probability

Subscribe to view

Market & Valuation

Subscribe to view

Trial Design

CONTROLLED
Total Trials1
Total Enrollment55

FDA Designations

No designations recorded

Clinical trial landscape

EOS301984 · 1 trial · 1 indication

Phase 1 1
NCT06547957A First-in-Human Study of EOS301984 as Monotherapy or Combination Therapy in Adult Participants With Advanced Solid TumorsAdvanced Solid Tumors
ACTIVE NOT_RECRUITING55 Analytics
PHASE1ACTIVE NOT_RECRUITING
A First-in-Human Study of EOS301984 as Monotherapy or Combination Therapy in Adult Participants With Advanced Solid Tumors
Advanced Solid TumorsUnlock trial analytics

Study Endpoints

Primary Endpoints

To characterize the safety and tolerability of EOS301984 alone and in combination with other anticancer agents in participants with advanced solid tumors
From first study treatment administration to last participant last follow-up (Up to 4 years)
Incidence and severity of AEs in patients receiving EEOS301984
From first study treatment administration to last participant last follow-up (Up to 4 years)

Secondary Endpoints

Mean and median Area under the curve (AUC) of EOS301984 following first dose and repeated administration at each dose level
From first dose up to 21 days repeated cycles
Mean and median Maximum concentration (Cmax) of EOS301984 following first dose and repeated administration at each dose level
From first dose up to 21 days repeated cycles
Define the recommended Phase 2 dose (RP2D) in participants with advanced tumors.
From first study treatment administration to last participant last follow-up (Up to 4 years)
Unlock Study Endpoints

Study Design & Arms

AllocationNON_RANDOMIZED
MaskingNONE
ModelSEQUENTIAL
PurposeTREATMENT

Treatment Arms

ArmTypeDescription
Part 1A dose escalationEXPERIMENTALEOS301984 dose escalation as monotherapy
Part 1B dose escalationEXPERIMENTALEOS301984 in combination with other cancer therapies

Interventions

NameTypeDescription
EOS301984DRUGMultiple doses of EOS301984
Anti-PD-1 monoclonal antibodyDRUGMultiple doses of EOS301984 in combination with Anti-PD-1
Unlock Study Design Details

Eligibility Criteria

Age Range18 Years to N/A
SexALL
Healthy VolunteersNo
Study Sites6

INCLUSION CRITERIA * Provide a signed written informed consent before any study-specific evaluation. * Be at least 18 years old on the day of signing informed consent. * Have a histologically confirmed advanced solid tumor for which no standard approved treatment is available, or are ineligible for...

Countries:Belgium
Unlock Eligibility Criteria

Competitive Landscape -Other Solid Tumors 9 trials (matched to "Advanced Solid Tumors")

Frequently asked questions about EOS301984

What is EOS301984 used for in advanced solid tumors?

EOS301984 is an investigational small molecule being developed for the treatment of advanced solid tumors. It is currently in Phase 1 clinical development as a potential therapy for adult patients with advanced solid tumors.

What does EOS301984 target?

EOS301984 targets PD-1, a protein involved in immune checkpoint regulation. By targeting PD-1, the drug is designed to modulate the immune system's response to cancer cells, though its full mechanism of action is still under investigation.

Who makes EOS301984?

EOS301984 is being developed by iTeos Therapeutics, Inc., a biopharmaceutical company traded on the NASDAQ under the ticker symbol ITOS. The company is conducting a first-in-human study of the drug in advanced solid tumors.

What phase is EOS301984 in?

EOS301984 is in Phase 1 clinical development. It is an investigational drug and has not been approved by regulatory authorities. The ongoing Phase 1 trial is a first-in-human study evaluating the drug as monotherapy or combination therapy.

What clinical trials is EOS301984 in?

EOS301984 is being studied in a Phase 1 clinical trial with the identifier NCT06547957. This first-in-human study is evaluating the drug as monotherapy or combination therapy in adult participants with advanced solid tumors, with an enrollment of 55 participants.

Is EOS301984 the same as any other drug?

EOS301984 is a unique investigational compound developed by iTeos Therapeutics. No alternative names for this drug have been reported in the available clinical trial information.