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A Study to Evaluate the Safety and Antitumor Activity of GS-1206 in Adults With Solid Tumors

A Phase 1 Study to Evaluate the Safety, Tolerability, and Antitumor Activity of GS-1206 in Adults With Solid Tumors

Status
Recruiting
Phases
Phase 1
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT07703878
Enrollment
302
Registered
2026-07-15
Start date
2026-07-17
Completion date
2029-09-01
Last updated
2026-09-08

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

Conditions

Solid Tumor

Brief summary

The goal of this clinical study is to learn more about the study drug GS-1206, including its safety, tolerability, and antitumor activity in adult participants with solid tumors.

Interventions

DRUGGS-1206

Administered Orally

Sponsors

Gilead Sciences
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

Key Inclusion Criteria: * All individuals must have a tumor with protocol-specified mutation as determined by local health-authority approved test. * For Part A (including backfill cohorts): Individuals with histologically confirmed advanced or metastatic solid tumors who have progressed following treatment in the advanced or metastatic setting known to confer clinical benefit, unless the individual refused, is intolerant to, or is not eligible for standard-of-care (SOC) treatment. * For Part B dose expansion, individuals with protocol-specified tumor types will be enrolled. Key

Exclusion criteria

* Use of any of the therapies listed below within the specified time frames: 1. Investigational drugs (drugs not marketed for any indication) within 28 days prior to Cycle 1 Day 1. 2. Anticancer biologic agent or immunotherapy within 28 days prior to Cycle 1 Day 1. 3. Anticancer chemotherapy or targeted approved small molecule therapy within 21 days prior to Cycle 1 Day 1, or 42 days for nitrosoureas or mitomycin. 4. Hormonal or other adjunctive therapy for cancers other than the cancer under evaluation in this study that started within 14 days prior to planned Cycle 1 Day 1 are not permitted. Exceptions: hormonal therapy, bisphosphonates, somatostatin analogues, and leuprolide are permitted if started at least 14 days prior to Cycle 1 Day 1. 5. Major surgery (excluding minor procedures, eg, placement of vascular access, gastrointestinal/biliary stent, biopsy) within 28 days prior to Cycle 1 Day 1, and any toxicity or complications have recovered to Grade 1 or less. 6. Radiation therapy within 21 days prior to Cycle 1 Day 1. Exception: limited (eg, pain palliation) radiation therapy is allowed if any radiation associated toxicity is resolved to Grade 1 or less, and the radiation is not administered to a target lesion. Note: Other protocol defined Inclusion/

Design outcomes

Primary

MeasureTime frame
Percentage of Participants Experiencing any Dose-limiting Toxicities (DLTs)First dose up to 21 days post first dose
Percentage of Participants Experiencing Treatment-Emergent Adverse Events (AEs) and Serious Adverse Events (SAE) Based on National Cancer Institute (NCI) Common Terminology Criteria for Adverse Events (CTCAE) v6.0.First dose date up to 30 days post last dose (Up to 3 years)
Percentage of Participants Experiencing Clinical Laboratory Abnormalities Based National Cancer Institute (NCI) Common Terminology Criteria for Adverse Events (CTCAE) v6.0.First dose date up to 30 days post last dose (Up to 3 years)

Secondary

MeasureTime frameDescription
Plasma Concentrations of GS-1206 and its Metabolites After Single Dose and Repeated Dose AdministrationPredose and postdose up to end of treatment (up to 2 years)
Pharmacokinetic (PK) Parameter: Cmax of GS-1206 and its MetabolitesUp to 2 yearsCmax is defined as the maximum observed concentration of drug
PK Parameter: Tmax of GS-1206 and its MetabolitesUp to 2 yearsTmax is defined as the time (observed time point) of Cmax
PK Parameter: AUC0-24h of GS-1206 and its MetabolitesUp to 2 yearsAUC0-24h is defined as the partial area under the concentration versus time curve from time 0 to time 24
Objective Response Rate (ORR)Up to 3 yearsORR is defined as the percentage of participants who have measurable disease at baseline and have achieved complete response (CR) or partial response (PR) according to Response Evaluation Criteria in Solid Tumors (RECIST) v1.1 and assessed by the investigator at the local site.
Duration of Response (DOR)Up to 3 yearsDOR is defined as the measurement from the time of first response (CR or PR) as assessed by the investigator at local site, per RECIST v1.1 until the date of first documented disease progression or death, whichever occurs first.
Best Overall Response (BOR)Up to 3 yearsBOR is defined as the best response recorded from first dosing date until disease progression identified by RECIST v1.1, death, or the participant discontinues study treatment, whichever occurs first.
Progression-Free Survival (PFS)Up to 3 yearsPFS is defined as the time from first dosing date until disease progression or death from any cause, whichever comes first as measured per RECIST v1.1.
Disease Control Rate (DCR)Up to 3 yearsDCR is defined as the measurement by the percentage of participants who achieve confirmed response of CR or PR or stable disease.

Countries

United States

Contacts

CONTACTGilead Clinical Study Information Center
GileadClinicalTrials@gilead.com1-833-445-3230 (GILEAD-0)
STUDY_DIRECTORGilead Study Director

Gilead Sciences

Outcome results

None listed

Source: ClinicalTrials.gov · Data processed: Sep 9, 2026