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IDE849

Phase 1

Small-cell Lung Cancer | Small molecule | Oncology |IDEAYA Biosciences, Inc.|Trials Updated: Jul 9, 2026

IDE849 development status

Highest phase Phase 1
Registered trials 1 across 1 sponsor since Sep 2025

IDE849 target and mechanism

Molecular targetDLL3
ModalitySmall molecule

Success Probability

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Market & Valuation

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Trial Design

CONTROLLEDDMCBiomarker
Total Trials1
Total Enrollment262

FDA Designations

No designations recorded

IDE849 clinical trials

IDE849 · 1 trial · 3 indications

Phase 1 1
NCT07174583A Study of IDE849 in Patients With DLL3 Expressing Tumors Including Small Cell Lung CancerSmall-cell Lung Cancer
RECRUITING262 Analytics
PHASE1RECRUITING
A Study of IDE849 in Patients With DLL3 Expressing Tumors Including Small Cell Lung Cancer
Small-cell Lung CancerUnlock trial analytics

Study Endpoints

Primary Endpoints

Part 1A: Safety and Tolerability of IDE849 (Monotherapy)
approximately 4 years total study duration

Incidence of dose-limiting toxicities, incidence and severity AEs and SAEs as measured by CTCAE V5.0.

Part 1B: Safety and Tolerability of IDE849 in Combination with durvalumab or IDE161
approximately 4 years total study duration

Incidence of dose-limiting toxicities, incidence and severity AEs and SAEs as measured by CTCAE V5.0.

Part 2: Safety and Tolerability of IDE849 (Monotherapy Dose Expansion)
approximately 4 years total study duration

Incidence and severity and relationship of AEs and SAEs as measured by CTCAE V5.0

Part 2: Safety and Tolerability of IDE849 in Combination with durvalumab or IDE161 or durvalumab + carboplatin (Dose Expansion)
approximately 4 years total study duration

Incidence and severity and relationship of AEs and SAEs graded as measured by CTCAE V 5.0.

Part 2: Objective Response Rate (ORR) and Investigator Assessment of IDE849 ORR per RECIST 1.1
approximately 4 years total study duration

ORR per RECIST v1.1, defined as the proportion of subjects with a Complete Response (CR) or Partial Response (PR) as assessed by the Investigator.

Part 2: Duration of Response (DOR) and Investigator Assessment of IDE849 DOR per RECIST 1.1
approximately 4 years total study duration

DOR per RECIST v1.1, defined as the time from the first documented Complete Response (CR) or Partial Response (PR) to disease progression or death, whichever occurs first, as assessed by the Investigator.

Secondary Endpoints

Part 1 and Part 2: Disease Control Rate (DCR) and Investigator Assessment of IDE849 DCR per RECIST 1.
approximately 4 years total study duration
Part 2: Progression-Free Survival (PFS) PFS per RECIST1.1 PFS per RECIST1.1.
approximately 4 years total study duration
Part 2: Overall Survival (OS)
approximately 4 years total study duration
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Study Design & Arms

AllocationNON_RANDOMIZED
MaskingNONE
ModelPARALLEL
PurposeTREATMENT

Treatment Arms

ArmTypeDescription
Part 1A IDE849 Monotherapy (Dose Escalation)EXPERIMENTALSuccessive cohorts of participants will be treated with escalating doses of IDE849 until the maximum tolerated dose and dose for expansion are determined
Part 1B IDE849 + durvalumab, or IDE849 + durvalumab + carboplatin (Dose Escalation)EXPERIMENTALMultiple doses of IDE849 will be tested in combination with durvalumab or in combination with durvalumab + carboplatin to identify the optimal combination dose.
Part 1B IDE849 + IDE161 (Dose Escalation)EXPERIMENTALMultiple doses of IDE849 will be tested in combination with IDE161 to identify the optimal combination dose.
Part 2 IDE849 Monotherapy RDE 1 for SCLC (Dose Expansion)EXPERIMENTALChosen monotherapy doses of IDE849 will be tested in additional participants.
Part 2 IDE849 Monotherapy RDE 2 for SCLC (Dose Expansion)EXPERIMENTALChosen monotherapy doses of IDE849 will be tested in additional participants
Part 2 IDE849 Monotherapy for NEC (Dose Expansion)EXPERIMENTALChosen monotherapy doses of IDE849 will be tested in additional participants.
Part 2 IDE849 + durvalumab (Dose Expansion)EXPERIMENTALChosen combination dose of IDE849 + durvalumab will be tested in additional participants.
Part 2 IDE849 + durvalumab + carboplatin (Dose Expansion)EXPERIMENTALChosen combination dose of IDE849 + durvalumab + carboplatin will be tested in additional participants.
Part 2 IDE849 + IDE161 (Dose Expansion)EXPERIMENTALChosen combination dose of IDE849 + IDE161 will be testing in additional participants

Interventions

NameTypeDescription
IDE849DRUGIV administration
durvalumabDRUGIV administration
IDE161DRUGoral administration
CarboplatinDRUGIV administration
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Eligibility Criteria

Age Range18 Years to N/A
SexALL
Healthy VolunteersNo
Study Sites13

Inclusion Criteria: 1. Are willing to participate in this clinical study, understand the study procedures, and are able to sign the written ICF. 2. Subjects with histologically or cytologically confirmed ES- SCLC, neuroendocrine carcinoma (NEC), DLL3+ solid tumors, are eligible per protocol. Subjec...

Countries:United States
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Competitive Landscape -Non-Small Cell Lung Cancer 541 trials (matched to "Small-cell Lung Cancer")

Top 20 of 90 competitors

CompanyTickerTrialsLead PhaseDrugs
Merck & Co., Inc.MRK37PHASE3Pembrolizumab, Olaparib, Sacituzumab tirumotecan, Intismeran autogene, Pembrolizumab Berahyaluronidase alfa
Revolution Medicines, Inc.RVMD9PHASE3Daraxonrasib, Zoldonrasib, Elironrasib, RMC-5127
Eli Lilly and CompanyLLY18PHASE3Selpercatinib, Pemetrexed, Abemaciclib, Olomorasib, LY3537982
AbbVie, Inc.ABBV12PHASE3ABBV-1480, Telisotuzumab vedotin, Telisotuzumab Adizutecan, Livmoniplimab, Budigalimab
AstraZeneca PLCAZN68PHASE3Datopotamab deruxtecan, Durvalumab, Oleclumab, Monalizumab, Tremelimumab
Gilead Sciences, Inc.GILD7PHASE3Sacituzumab govitecan, Zimberelimab, Domvanalimab, Etrumadenant, TUB-040- Dose escalation
Bristol-Myers Squibb CompanyBMY24PHASE3Repotrectinib, Nivolumab, Pumitamig, Relatlimab, Adagrasib
Johnson & JohnsonJNJ19PHASE3Lazertinib, Amivantamab, JNJ-90301900, JNJ-86974680, Cetrelimab
BioNTech SE Sponsored ADRBNTX7PHASE3Gotistobart, Pumitamig, BNT326, BNT116, BNT324
Pfizer Inc.PFE20PHASE3Lorlatinib, Crizotinib, Avelumab, Talazoparib, Axitinib
Amgen Inc.AMGN4PHASE3ABP 234, Sotorasib, Anvumetostat
Novartis AG Sponsored ADRNVS12PHASE3Opnurasib, TNO155, DKY709, Spartalizumab, trametinib
GSK plc Sponsored ADRGSK3PHASE3Dostarlimab, Belrestotug, Nelistotug, Cobolimab
ArriVent BioPharma, Inc.AVBP9PHASE3Firmonertinib
Summit Therapeutics IncSMMT2PHASE3Ivonescimab
Nuvation Bio, Inc. Class ANUVB4PHASE3Taletrectinib
Genmab A/S Sponsored ADRGMAB4PHASE3Acasunlimab, Rina-S, GEN1042
Regeneron Pharmaceuticals, Inc.REGN7PHASE2Cemiplimab, Marlotamig, Fianlimab, REGN5093
Nuvalent, Inc. Class ANUVL1PHASE3Neladalkib
BeOne Medicines Ltd. Sponsored ADRONC7PHASE3Tislelizumab, BGB-A445, LBL-007, BGB-15025, BGB-43395
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Frequently asked questions about IDE849

What is IDE849?

IDE849 is an investigational small molecule developed by IDEAYA Biosciences, Inc. (ticker IDYA) for DLL3 expressing tumors, including small-cell lung cancer. It is in Phase 1 clinical development and is being studied in a single recruiting trial in the United States. It has not been approved by the FDA.

What is IDE849 used for in small-cell lung cancer?

IDE849 is being evaluated for the treatment of DLL3 expressing tumors, including small-cell lung cancer, as well as neuroendocrine carcinomas and other solid tumors shown to express DLL3. It is an investigational therapy in Phase 1 testing and is not approved for any indication.

What does IDE849 target?

IDE849 targets DLL3, a protein expressed on the surface of certain tumor cells. By binding DLL3, the small molecule is designed to act on tumors that express this target. The Phase 1 trial enrolls patients whose tumors are selected for DLL3 expression.

Who is developing IDE849?

IDE849 is being developed by IDEAYA Biosciences, Inc., which trades on the Nasdaq under the ticker IDYA. The company is running the Phase 1 study of IDE849 in the United States.

What phase is IDE849 in?

IDE849 is in Phase 1 clinical development. It is an investigational drug and has not been approved by the FDA. The single Phase 1 trial is currently recruiting participants and is designed to enroll 262 patients.

What clinical trial is IDE849 in?

IDE849 is being studied in the Phase 1 trial NCT07174583, titled A Study of IDE849 in Patients With DLL3 Expressing Tumors Including Small Cell Lung Cancer. The trial is recruiting in the United States, enrolls adults 18 years and older of all sexes, and has a controlled design.