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Study of XB010 in Subjects With Solid Tumors

A Dose-Escalation and Expansion Study of XB010 as a Single Agent and Combination Therapy in Subjects With Locally Advanced or Metastatic Solid Tumors

Status
Recruiting
Phases
Phase 1
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT06545331
Enrollment
396
Registered
2024-08-09
Start date
2024-08-06
Completion date
2027-10-20
Last updated
2026-06-22

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

Conditions

Esophageal Squamous Cell Cancer, Head and Neck Squamous Cell Cancer, Hormone-receptor-positive Breast Cancer, Locally Advanced or Metastatic Solid Tumors, NSCLC (Non-small Cell Lung Cancer), Triple Negative Breast Cancer (TNBC)

Brief summary

This is a FIH study is to evaluate the safety, tolerability, PK, immunogenicity, and preliminary antitumor activity of XB010 as a single agent and in combination with pembrolizumab in subjects with locally advanced or metastatic solid tumors for whom alternative therapies do not exist or available therapies are intolerable or no longer effective.

Detailed description

This study consists of Dose-Escalation and Cohort-Expansion Stages. The Dose-Escalation Stage is designed to determine the maximum tolerated dose (MTD) and/or recommended dosage(s) for expansion (RDE\[s\]) of XB010 as a single agent, and to evaluate XB010 monotherapy RDE(s) in combination with pembrolizumab. The Cohort-Expansion Stage is designed to explore the clinical activity and further characterize the safety and tolerability of XB010 as monotherapy in multiple tumor-specific cohorts.

Interventions

DRUGXB010

IV administration of XB010

DRUGPembrolizumab

IV administration of Pembrolizumab

Sponsors

Exelixis
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

* Age 18 years or older on the day of consent. * Eastern Cooperative Oncology Group (ECOG) Performance Status of 0-1. * Adequate organ and marrow function. * Cytologically or histologically and radiologically confirmed solid tumor that is inoperable, locally advanced, metastatic, or recurrent. * The Cohort Expansion stage will enroll subjects with multiple tumor types (non-small cell lung cancer, hormone-receptor-positive breast cancer, head and neck cancer, esophageal squamous cell, triple-negative breast cancer). * Capable of understanding and complying with the protocol requirements and must have signed the informed consent document.

Design outcomes

Primary

MeasureTime frameDescription
Dose-Escalation Stage: Maximum tolerated dose (MTD) and/or Recommended dose(s) for Expansion [RDE(s)] for XB01018 monthsTo determine the MTD and/or RDE(s) for further evaluation of IV administration of XB010 alone and in combination therapy.
Dose-Escalation Stage: Safety of XB01018 monthsTo evaluate the safety of XB010 alone and in combination therapy through the evaluation of incidence and severity of nonserious adverse events (AEs) and serious adverse events (SAEs)
Dose-Escalation Stage: Duration of exposure of XB010 [Tolerability]18 monthsTo evaluate the tolerability of XB010 alone and in combination therapy through the evaluation of the duration of exposure of each component
Dose-Escalation Stage: Dose intensity of XB010 [Tolerability]18 monthsTo evaluate the tolerability of XB010 alone and in combination therapy through the evaluation of the dose intensity of each component
Cohort-Expansion Stage: Preliminary antitumor activity of XB01024 monthsObjective Response Rate (ORR) as assessed by the Investigator per RECIST 1.1

Secondary

MeasureTime frameDescription
Dose-Escalation Stage: Maximum Plasma Concentration (Cmax) of XB01018 MonthsTo evaluate the maximum plasma concentration of XB010 alone and in combination.
Dose-Escalation Stage: Time to Maximum Plasma Concentration (Tmax) of XB01018 MonthsTo evaluate the time to maximum plasma concentration of XB010 alone and in combination.
Dose-Escalation Stage: Clearance of XB01018 MonthsTo evaluate the volume of plasma cleared of XB010 alone and in combination for a specified time period
Dose-Escalation Stage: Area Under the Plasma Concentration Curve (AUC) of XB01018 MonthsTo measure the Area Under the Plasma Concentration Curve of XB010 alone and in combination
Dose-Escalation Stage: Minimum Plasma Concentration (Cmin) of XB01018 MonthsTo evaluate the minimum plasma concentration of XB010 alone and in combination
Dose-Escalation Stage: Immunogenicity of XB01018 MonthsTo assess the immunogenicity of XB010 alone and in combination as measured by anti-drug antibody (ADA) analysis
Cohort-Expansion Stage: Duration of exposure of XB010 [Tolerability]24 MonthsTo evaluate the tolerability of XB010 through the evaluation of the duration of exposure
Cohort-Expansion Stage: Dose intensity of XB010 [Tolerability]24 MonthsTo evaluate the tolerability of XB010 through the evaluation of the dose intensity
Cohort-Expansion Stage: Maximum Plasma Concentration (Cmax) of XB01024 MonthsTo evaluate the maximum plasma concentration of XB010
Cohort-Expansion Stage: Time to Maximum Plasma Concentration (Tmax) of XB01024 MonthsTo evaluate the time to maximum plasma concentration of XB010
Cohort-Expansion Stage: Clearance of XB01024 MonthsTo evaluate the volume of plasma cleared of XB010 for a specified time period
Cohort-Expansion Stage: Area Under the Plasma Concentration Curve (AUC) of XB01024 MonthsTo measure the Area Under the Plasma Concentration Curve of XB010
Cohort-Expansion Stage: Minimum Plasma Concentration (Cmin) of XB01024 MonthsTo evaluate the minimum plasma concentration of XB010
Cohort-Expansion Stage: Immunogenicity of XB01024 MonthsTo assess the immunogenicity of XB010 as measured by anti-drug antibody (ADA) analysis

Countries

United Kingdom, United States

Contacts

CONTACTExelixis Clinical Trials
druginfo@exelixis.com1-888-EXELIXIS (888-393-5494)
CONTACTBackup or International
650-837-7400
STUDY_DIRECTORStudy Director

Exelixis

Outcome results

None listed

Source: ClinicalTrials.gov · Data processed: Jun 23, 2026