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A First-in-Human Study of EOS301984 as Monotherapy or Combination Therapy in Adult Participants With Advanced Solid Tumors

A First-in-Human Open-label, Phase I Dose Escalation and Expansion Cohort Study of EOS301984 as Monotherapy and in Combination With Other,Anticancer Treatments in Participants With Advanced Solid Tumors

Status
Active, not recruiting
Phases
Phase 1
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT06547957
Enrollment
55
Registered
2024-08-09
Start date
2023-07-07
Completion date
2025-12-31
Last updated
2025-08-13

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Advanced Solid Tumors

Keywords

Advanced solid tumors, neoplasm, cancer, phase I, immunotherapy, anticancer

Brief summary

APT-008 is an open-label, Phase I/Ib, dose escalation and expansion cohort study to evaluate the safety, tolerability, Pharmacokinetic (PK), Pharmacodynamic (PD), and preliminary efficacy of EOS301984 as monotherapy and in combination with other anticancer therapies in participants with advanced solid tumors.

Interventions

DRUGEOS301984

Multiple doses of EOS301984

DRUGAnti-PD-1 monoclonal antibody

Multiple doses of EOS301984 in combination with Anti-PD-1

Sponsors

iTeos Therapeutics
Lead SponsorINDUSTRY

Study design

Allocation
NON_RANDOMIZED
Intervention model
SEQUENTIAL
Primary purpose
TREATMENT
Masking
NONE

Eligibility

Sex/Gender
ALL
Age
18 Years to No maximum
Healthy volunteers
No

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, or did not tolerate standard approved treatment. * Have at least one tumor lesion measurable per Response Evaluation Criteria in Solid Tumors (RECIST) v1.1. * Have an Eastern Cooperative Oncology Group (ECOG) performance status of 0 or 1. * Have adequate organ and marrow function. * Agree to use adequate highly effective method of contraception during the study is mandatory, if Women of Childbearing Potential (WOCBP) or male.

Exclusion criteria

* Have received prior systemic anticancer treatment including investigational agents within 4 weeks before the first dose of study treatment. * Have major surgery planned or have had a major surgery within 5 weeks before the first dose of the study treatment. * Have received prior radiotherapy within 2 weeks before the first dose of study treatment. * Have allergy to study treatment(s) or any of its components. * Have a history or current evidence of uncontrolled or significant cardiovascular disease. Unable to comply with the requirements of the study or who, in the opinion of the Investigator, should not participate in the study. * Pregnant or breastfeeding women.

Design outcomes

Primary

MeasureTime frame
To characterize the safety and tolerability of EOS301984 alone and in combination with other anticancer agents in participants with advanced solid tumorsFrom first study treatment administration to last participant last follow-up (Up to 4 years)
Incidence and severity of AEs in patients receiving EEOS301984From first study treatment administration to last participant last follow-up (Up to 4 years)

Secondary

MeasureTime frame
Mean and median Area under the curve (AUC) of EOS301984 following first dose and repeated administration at each dose levelFrom 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 levelFrom 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)
Percentage of participants with Objective Response as determined by Investigator according to Response Evaluation Criteria in Solid Tumors (RECIST) v1.1From first study treatment administration to last participant last follow-up (Up to 4 years)

Countries

Belgium

Outcome results

None listed

Source: ClinicalTrials.gov · Data processed: Feb 4, 2026