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A Dose-escalation, Dose-finding, and Expansion Study of XL495 in Participants With Locally Advanced or Metastatic Solid Tumors

A Dose-escalation, Dose-finding, and Expansion Study of XL495 as a Single Agent and in Combination Therapy in Participants With Locally Advanced or Metastatic Solid Tumors

Status
Terminated
Phases
Phase 1
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT06630247
Enrollment
9
Registered
2024-10-08
Start date
2024-10-17
Completion date
2025-05-07
Last updated
2025-06-25

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

Conditions

Locally Advanced Solid Tumor, Metastatic Solid Tumor, Solid Cancers, Solid Tumor Cancer, Solid Tumor Malignancy, Urothelial Cancer of Renal Pelvis, Urothelial Cancer (Urinary Bladder, Ureters, or Renal Pelvis Cancer)

Keywords

solid tumor, renal tumor, metastatic solid tumor, urothelial carcinoma

Brief summary

The goal of this study is to obtain safety, tolerability, PK, and preliminary clinical antitumor activity for XL495 as a single agent and in combination with select cytotoxic agents in participants with locally advanced or metastatic tumors for whom life-prolonging therapies do not exist or available therapies are intolerable/no longer effective.

Interventions

DRUGXL495

oral doses of XL495

DRUGADC cytotoxic agents

intravenous infusion of anti-cancer combination agent

Sponsors

Exelixis
Lead SponsorINDUSTRY

Study design

Allocation
NON_RANDOMIZED
Intervention model
SEQUENTIAL
Primary purpose
TREATMENT
Masking
NONE

Intervention model description

This study is divided into three stages: The first stage is the dose escalation stage that evaluates how much of XL495 alone patients can safely tolerate. The second is the dose finding stage that evaluates how much of XL495 to give patients in combination with other anti-cancer medications. The third stage is the expansion stage that evaluates how XL495 performs in patients in combination with other anti-cancer medications.

Eligibility

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

Inclusion criteria

* For All Participants * Have received at least one standard therapy unless it does not exist, or available therapies are intolerable or no longer effective. * For participants, who qualify for approved molecularly selected therapies such as RAS inhibitors, they must have progressed on, relapsed from, been intolerant to, ineligible, or refused those therapies. * Expansion Stage * Diagnosis of metastatic advanced UC (primary tumor: renal pelvis, ureter, urinary bladder, or urethra). * At least one measurable lesion as defined by RECIST, version 1.1. * Participants must be eligible for sacituzumab govitecan treatment as their next line of therapy. * At least one but no more than 3 prior lines of therapy. * Eastern Cooperative Oncology Group (ECOG) Performance Status (0-2 for monotherapy; 0-1 for combo)

Exclusion criteria

* Prior anticancer treatment, including: * Radiation therapy within 2 weeks before first dose of study treatment. * Known brain metastases or cranial epidural disease * Current or recent severe illness * Known history or positive test for human immunodeficiency virus (HIV) unless meets specific criteria. * Active infection with hepatitis B virus or hepatitis C virus. * Malabsorption syndrome. * History of solid organ, autologous or allogenic stem cell transplant. * Diagnosis of another cancer within 2 years before first dose of study treatment, except for superficial skin cancers, or localized, low-grade tumors deemed cured and not treated with standard therapy. * Active autoimmune disease with skin involvement.

Design outcomes

Primary

MeasureTime frameDescription
Dose-escalation and Dose-finding Stages: Number of Participants with Treatment-Emergent Adverse EventsUp to 18 months
Dose-escalation and Dose-finding Stages: Number of Participants with Dose-limiting ToxicitiesUp to 18 months
Expansion Stage: Number of Participants with Treatment-Emergent Adverse EventsUp to 19 months
Expansion Stage: Objective Response Rate (ORR) As Assessed by Investigator Per RECIST 1.1Until disease progression or death, up to approximately 19 monthsORR is defined as the percentage of participants with the best overall response (BOR) of confirmed complete response (CR) or confirmed partial response (PR), as assessed by the Investigator per RECIST 1.1.

Secondary

MeasureTime frameDescription
Dose-escalation and Dose-finding Stages: PK Parameter Apparent Clearance with Oral Administration of XL495 (CL/F)Pre-dose and multiple post-dose time points, up to 18 months
Dose-escalation and Dose-finding Stages: PK Parameter Apparent Terminal Elimination Half-life of XL495 (t1/2)Pre-dose and multiple post-dose time points, up to 18 months
Expansion Stage: Duration of Response (DOR) As Assessed by Investigator per RECIST 1.1Until disease progression or death, up to approximately 19 months.DOR is defined as the time from the first documented objective response (CR or PR) until the earlier of radiographic progressive disease (PD) as assessed by the investigator per RECIST 1.1 or censoring due to lack of these events or start of non-protocol anti-cancer therapy.
Expansion Stage: Progression-free Survival (PFS), as Assessed by Investigator per RECIST 1.1Until disease progression or death, up to approximately 19 months.PFS is defined as the time from start of study treatment to the earlier of either radiographic PD per RECIST 1.1 or death from any cause.
Expansion Stage: Concentration of XL495 in PlasmaPre-dose and multiple post-dose time points, up to 18 months
Dose-escalation and Dose-finding Stages: Concentration of XL495 in PlasmaPre-dose and multiple post-dose time points, up to 18 months
Expansion Stage: PK Parameter Maximum Plasma Concentration of XL495 (Cmax)Pre-dose and multiple post-dose time points, up to 18 months
Expansion Stage: PK Parameter Time to Cmax of XL495 (Tmax)Pre-dose and multiple post-dose time points, up to 18 months
Expansion Stage: PK Parameter Apparent Clearance with Oral Administration of XL495 (CL/F)Pre-dose and multiple post-dose time points, up to 18 months
Expansion Stage: PK Parameter Apparent Terminal Elimination Half-life of XL495 (t1/2)Pre-dose and multiple post-dose time points, up to 18 months
Expansion Stage: Pharmacokinetic (PK) Parameter Area Under the Plasma Concentration Time Curve (AUC) of XL495Pre-dose and multiple post-dose time points, up to 18 months
Dose-escalation and Dose-finding Stages: Pharmacokinetic (PK) Parameter Area Under the Plasma Concentration Time Curve (AUC) of XL495Pre-dose and multiple post-dose time points, up to 18 months
Dose-escalation and Dose-finding Stages: PK Parameter Maximum Plasma Concentration of XL495 (Cmax)Pre-dose and multiple post-dose time points, up to 18 months
Dose-escalation and Dose-finding Stages: PK Parameter Time to Cmax of XL495 (Tmax)Pre-dose and multiple post-dose time points, up to 18 months

Countries

United States

Outcome results

None listed

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