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Study of GS-2426 in Participants With Advanced Solid Tumors

A Phase 1, Multicenter, Open-Label Clinical Study to Evaluate the Safety and Tolerability of GS-2426 in Participants With Advanced MTAP-Deleted Solid Tumors

Status
Recruiting
Phases
Phase 1
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT07601243
Enrollment
174
Registered
2026-05-22
Start date
2026-06-02
Completion date
2029-01-01
Last updated
2026-08-03

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

Conditions

Advanced Solid Tumors

Brief summary

The goal of this clinical study is to learn more about the study drug GS-2426, and how safe and tolerable it is in participants with advanced methylthioadenosine phosphorylase (MTAP)-deleted solid tumors. The primary objective of this study is to evaluate the safety and tolerability of GS-2426 in participants with MTAP-deleted advanced solid tumors and to determine the maximum tolerated dose (MTD)/maximum administered dose (MAD) and the recommended phase II dose (RP2D).

Interventions

DRUGGS-2426

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: * Participants 18 years of age or older (≥ 19 years old for participants in South Korea). * Histologically or cytologically confirmed advanced malignant solid tumors, who have progressed on, are intolerant to or are ineligible for standard therapy, or have no standard treatment options. * Participant tumors are methylthioadenosine phosphorylase (MTAP)-deficient. * Adequate organ function * Eastern Cooperative Oncology Group (ECOG) performance status of 0 or 1 * All participants must provide a pretreatment tumor tissue sample. Key

Exclusion criteria

* Participants with plans to breastfeed during the study period or within 7 days following the last dose of study intervention. * Have not recovered (ie, returned to Grade 1 or baseline) from clinically significant adverse events (AEs) due to a previously administered agent or a previous intervention as assessed by the investigator. * Active second malignancy. Individuals with a history of malignancy who have been completely treated with no evidence of active cancer for 5 years prior to enrollment, or individuals with surgically cured tumors with low risk of recurrence may be enrolled. * Requirement for ongoing therapy with any prohibited medications . * Prior therapy with a protein arginine methyltransferase 5 (PRMT5) inhibitor or methionine adenosine transferase 2a (MAT2A) inhibitor. * Have serious infection requiring antibiotics within 14 days prior to the first dose. * Uncontrolled concurrent diseases Note: Other protocol defined Inclusion/

Design outcomes

Primary

MeasureTime frame
Percentage of Participants Experiencing Treatment-Emergent Adverse Events (AEs) and Serious Adverse Events (SAE)First dose up to 30 days post last dose (up to 105 weeks)
Percentage of Participants Experiencing Clinical Laboratory AbnormalitiesFirst dose up to 30 days post last dose (up to 105 weeks)
Percentage of Participants Experiencing Any Dose-limiting Toxicities (DLTs)First dose up to 21 days post first dose
Maximum Tolerated Dose (MTD)/Maximum Administered Dose (MAD)First dose up to 21 days post first dose
Recommended Phase 2 Dose (RP2D)Predose to end of study (up to 105 weeks)

Secondary

MeasureTime frameDescription
Plasma Concentration of GS-2426Predose and postdose up to end of treatment (up to 105 weeks)
Pharmacokinetic (PK) Parameter: AUC0-24h of GS-2426Predose and postdose up to end of treatment (up to 105 weeks)AUC0-24h is defined as the area under concentration versus time from 0 to 24 hours.
PK Parameters: Cmax of GS-2426Predose and postdose up to end of treatment (up to 105 weeks)Cmax is defined as the maximum observed plasma drug concentration.
PK Parameters: Tmax of GS-2426Predose and postdose up to end of treatment (up to 105 weeks)Tmax is defined as the time to peak plasma drug concentration of GS-2426.

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: Aug 4, 2026