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A Study of PARG Inhibitor IDE161 in Participants With Advanced Solid Tumors

A Study of PARG Inhibitor IDE161 in Participants With Advanced Solid Tumors

Status
Active, not recruiting
Phases
Phase 1
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT05787587
Enrollment
216
Registered
2023-03-28
Start date
2023-04-18
Completion date
2027-05-01
Last updated
2026-07-13

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

Conditions

Advanced or Metastatic Solid Tumors, Breast Cancer, Colorectal Cancer, Endometrial Cancer, Extensive Stage Small Cell Lung Cancer (ES-SCLC), Head and Neck Cancers, NSCLC, Ovarian Cancer, Prostate Cancer

Keywords

PARPi, PARP inhibitor, BRCA, HRD gene alteration, Breast, Ovarian, Advanced solid tumors, Metastatic solid tumors, BRCA 1, BRCA 2, Homologous recombination, PARG, PARG Inhibition, ATM, BARD1, BRIP1, CDK12, CHEK1, CHEK2, FANCL, PALB2, PPP2R2A, RAD51C, RAD51D, RAD54L, NBN, FANCA, HRD+, Endometrial, Pembro, Pembrolizumab, HR genes, genomic instability score, GIS, GI+, gLOH, genomic loss of heterozygosity, MSS, MSI, MMR, PD-L1, ES-SCLC, SCLC, Extensive Stage Small Cell Lung Cancer

Brief summary

The purpose of this study is to characterize the safety, tolerability, and efficacy of IDE161 as a single agent and in combination with pembrolizumab.

Detailed description

The purpose of this study is to characterize the safety, tolerability including determination of maximum tolerated dose (MTD), maximum accepted dose (MAD), recommended dose(s) for expansion (RDE) and/or recommended Phase 2 dose (RP2D), pharmacokinetics (PK), pharmacodynamics (PD) and preliminary anti-tumor activity of IDE161 as a single agent in participants with advanced or metastatic solid tumors harboring BRCA1/2 loss of function alterations and/or other defects in the homologous recombination (HR) pathway and in combination with pembrolizumab in participants with advanced/recurrent endometrial cancer.

Interventions

DRUGIDE-161

Oral Medication

DRUGPembrolizumab

Intravenous Infusion

Sponsors

IDEAYA Biosciences
Lead SponsorINDUSTRY
Merck Sharp & Dohme LLC
CollaboratorINDUSTRY

Study design

Allocation
NON_RANDOMIZED
Intervention model
SEQUENTIAL
Primary purpose
TREATMENT
Masking
NONE

Intervention model description

Sequential

Eligibility

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

Inclusion criteria

1. Adult participants must be 18 years of age or older 2. Advanced or metastatic solid tumors excluding primary central nervous system (CNS) tumors 3. For Module 1 only, Have documented evidence of BRCA1/2 and/or genetic alterations conferring homologous recombination deficiency (HRD) (ATM, BARD1, BRIP1, CDK12, CHEK1, CHEK2, FANCL, PALB2, PPP2R2A, RAD51B, RAD51C, RAD51D, RAD54L, NBN, FANCA) For Module 2 only, results of MSI and/or MMR testing required. For Module 2 only, results of BRCA1/2 and HRD gene testing required. 4. Participant must have progressed on at least one prior line of therapy in the advanced or metastatic setting that is considered an appropriate standard of care, or for which the participant has documented intolerance 5. For Module 2 only, advanced or metastatic Endometrial Cancer (uterine carcinosarcoma is excluded) 6. For Module 2 only, Must have progressed on treatment with an anti-PD-1/L1 monoclonal antibody (MAB)

Exclusion criteria

1. Known primary CNS malignancy 2. Impairment of GI function or GI disease that may significantly alter the absorption of IDE161 3. Have active, uncontrolled infection 4. Clinically significant cardiac abnormalities 5. Major surgery within 4 weeks prior to enrollment 6. Radiation therapy within 2 weeks prior to enrollment 7. Systemic cytotoxic chemotherapy within 4 weeks prior to enrollment 8. Radioimmunotherapy within 6 weeks of enrollment 9. Treatment with a therapeutic antibody within 4 weeks prior to enrollment 10. Treatment with an anti-cancer small molecule within 5 half-lives (t1/2), or 2 weeks, whichever is shorter 11. Have current active liver or biliary disease 12. For Module 2 only, History or allogeneic tissue/solid organ transplant 13. For Module 2 only, Active autoimmune disease that has required systemic treatment in past 2 years 14. For Module 2 only, History of (noninfectious) pneumonitis/interstitial lung disease that required steroids or has current pneumonitis/interstitial lung disease

Design outcomes

Primary

MeasureTime frameDescription
Part 1 (Dose Escalation): To characterize the safety and tolerability of IDE161 monotherapy or in combination with pembrolizumab to determine the MTD and/or RDEApproximately 2 years* Incidence of Dose Limiting Toxicities * Incidence of treatment-emergent Adverse Events as characterized by type, frequency, severity (as graded by NCI CTCAE version 5.0), timing, seriousness, and relationship to study therapy * Laboratory abnormalities as characterized by type, frequency, severity (as graded by NCI CTCAE version 5.0), and timing
Part 2 (Dose Expansion): To further assess the safety and tolerability of IDE monotherapy and in combination with pembrolizumab at the RDEApproximately 4 years* Incidence of treatment-emergent AEs as characterized by type, frequency, severity (as graded by NCI CTCAE version 5.0), timing, seriousness, and relationship to study therapy * Laboratory abnormalities as characterized by type, frequency, severity (as graded by NCI CTCAE v5.0), and timing
Part 2 (Dose Expansion): To evaluate preliminary anti-tumor activity of IDE161 monotherapy or in combination with pembrolizumabApproximately 4 yearsTumor response: Overall Response Rate assessed using RECIST criteria v1.1

Secondary

MeasureTime frameDescription
Part 2 (Dose Expansion) Assess the risk/benefit at an IDE161 monotherapy dose and exposure alternative to the initial expansion dose; as well as an IDE161 dose in combination with a fixed dose of pembrolizumab and exposure alternative to the initialApproximately 4 yearsDescriptively compare the totality of emerging data (efficacy, safety, PK, PD) between the initial expansion dose cohort and dose optimization cohort
To characterize the single dose PK Peak Plasma Concentration (Cmax) of IDE161 monotherapy and in combination with pembrolizumab.Approximately 4 yearsSingle-dose PK parameters of IDE161
To characterize the multiple dose PK Peak Plasma Concentration (Cmax) of IDE161 monotherapy and in combination with pembrolizumab.Approximately 4 yearsMultiple-dose PK parameters of IDE161
To characterize the single dose PK Area under the plasma concentration versus time curve (AUC) of IDE161 monotherapy and in combination with pembrolizumab.Approximately 4 yearsSingle-dose PK parameters of IDE161
To characterize the multiple dose PK Area under the plasma concentration versus time curve (AUC) of IDE161 monotherapy and in combination with pembrolizumab.Approximately 4 yearsMultiple-dose PK parameters of IDE161
To characterize the single dose PK Time to Peak drug Concentration (Tmax) of IDE161 monotherapy and in combination with pembrolizumab.Approximately 4 yearsSingle-dose PK parameters of IDE161
To characterize the multiple dose PK Time to Peak drug Concentration (Tmax) of IDE161 monotherapy and in combination with pembrolizumab.Approximately 4 yearsMultiple-dose PK parameters of IDE161

Countries

United States

Contacts

STUDY_DIRECTORDarrin Beaupre, MD,PhD

IDEAYA Biosciences

Outcome results

None listed

Source: ClinicalTrials.gov · Data processed: Jul 14, 2026