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IDE397

Phase 1

Solid Tumor | Small molecule | Oncology |IDEAYA Biosciences, Inc.|Trials Updated: Apr 9, 2026

IDE397 development status

Highest phase Phase 1
Registered trials 3 across 2 sponsors since Mar 2021

IDE397 target and mechanism

Molecular targetMAT2A
Target classEnzyme
ModalitySmall molecule

Success Probability

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Market & Valuation

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Trial Design

CONTROLLEDBiomarker
Total Trials1
Total Enrollment169

FDA Designations

No designations recorded

IDE397 clinical trials

IDE397 · 1 trial · 1 indication

Phase 1 1
NCT04794699Study of IDE397 in Participants With Solid Tumors Harboring MTAP DeletionSolid Tumor
ACTIVE NOT_RECRUITING169 Analytics
PHASE1ACTIVE NOT_RECRUITING
Study of IDE397 in Participants With Solid Tumors Harboring MTAP Deletion
Solid TumorUnlock trial analytics

Study Endpoints

Primary Endpoints

Dose-limiting Toxicities (DLTs) of IDE397
21 days following the first dose of IDE397

Incidence of DLTs of IDE397 will be determined

Dose-limiting Toxicities (DLTs) of IDE397 in combination with sacituzumab govitecan
21 - 28 days following the first dose of IDE397

Incidence of DLTs of IDE397 in a combination setting will be determined

Maximum Tolerated Dose (MTD) and/or Recommended Phase 2 Dose (RP2D) of IDE397
Approximately 2 years

MTD and RP2D of IDE397 will be determined

Maximum Tolerated Dose (MTD) and/or Recommended Phase 2 Dose (RP2D) of IDE397 in combination with sacituzumab govitecan
Approximately 2 years

MTD and RP2D of IDE397 in a combination setting will be determined

To evaluate preliminary anti-tumor activity of IDE397 as monotherapy and in combination with sacituzumab govitecan-hziy in expansion arms
Approximately 2 years

Objective Response Rate (ORR) and Duration of Response (DoR)

Secondary Endpoints

Plasma Pharmacokinetics of IDE397 and metabolite
Approximately 2 years
Drug interaction between IDE397 and sacituzumab govitecan
Approximately 2 years
Pharmacodynamic effect of IDE397 as a single agent and in combination with sacituzumab govitecan
Approximately 2 years
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Study Design & Arms

AllocationNON_RANDOMIZED
MaskingNONE
ModelPARALLEL
PurposeTREATMENT

Treatment Arms

ArmTypeDescription
Part 1: Dose Escalation Monotherapy (Solid Tumors)EXPERIMENTAL -
Part 2: Monotherapy Dose Expansion (NSCLC and Urothelial)EXPERIMENTAL -
Part 5: Combination Dose Escalation with sacituzumab govitecan (SG) (NSCLC and Urothelial)EXPERIMENTAL -
Part 6: Combination Dose Expansion with sacituzumab govitecan (SG) (NSCLC and Urothelial)EXPERIMENTAL -

Interventions

NameTypeDescription
IDE397DRUGIDE397 dosed orally
Sacituzumab govitecanDRUGIntravenous infusion
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Eligibility Criteria

Age Range18 Years to N/A
SexALL
Healthy VolunteersNo
Study Sites37

Inclusion Criteria: * Participant must be at least 18 years of age * Advanced or metastatic solid tumor that has progressed on at least one prior line of treatment or is intolerant to additional effective standard therapy * Have evidence of homozygous loss of MTAP or MTAP deletion * Willing to unde...

Countries:United StatesAustraliaFranceGermanySouth KoreaSpainTaiwan
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Competitive Landscape -Other Solid Tumors 10 trials (matched to "Solid Tumor")

Frequently asked questions about IDE397

What is IDE397?

IDE397 is an investigational small molecule developed by IDEAYA Biosciences for the treatment of solid tumors. It is being studied in patients whose tumors harbor an MTAP deletion, a biomarker-selected population. IDE397 is currently in Phase 1 clinical development and has not been approved by the FDA.

What does IDE397 target?

IDE397 targets MAT2A, an enzyme. By acting on this enzyme, IDE397 is designed to affect tumors that carry an MTAP deletion, which is the biomarker used to select patients for its clinical study. MAT2A is the molecular target of the small molecule.

Who makes IDE397?

IDE397 is being developed by IDEAYA Biosciences, Inc., which trades under the ticker IDYA. The company is the sponsor of the clinical program evaluating IDE397 in solid tumors harboring MTAP deletion.

What phase is IDE397 in?

IDE397 is in Phase 1 clinical development. It is an investigational drug and is not FDA approved. The Phase 1 study is currently active but not recruiting participants, and no completed trials of IDE397 have been reported.

What clinical trials is IDE397 in?

IDE397 is being evaluated in one clinical trial, NCT04794699, titled Study of IDE397 in Participants With Solid Tumors Harboring MTAP Deletion. The Phase 1 trial has enrolled 169 participants, is active but not recruiting, and is conducted in the United States, Australia, France, Germany, South Korea, Spain, and Taiwan.

What is IDE397 used for in solid tumors?

IDE397 is being studied for the treatment of solid tumors that harbor an MTAP deletion. The Phase 1 trial NCT04794699 enrolls adults 18 years and older with this biomarker-selected tumor type. Use of IDE397 remains investigational, as the drug is still in clinical development.