A Phase 1 interventional study of IDE892 and IDE397 in NSCLC Adenocarcinoma, Gastroesophageal Cancer (GC) and Gastric Adenocarcinoma, sponsored by IDEAYA Biosciences. Recruiting at 23 sites in United States. Open to participants aged 18 Years and older. Per ClinicalTrials.gov, last updated 2026-09-28.
Sponsored by IDEAYA Biosciences · Phase 1, Interventional, and Treatment
This is a multicenter clinical study to evaluate the safety, efficacy, and Pharmacokinetics (PK) of IDE892 as monotherapy and in combination with other agents including IDE397 in participants with methylthioadenosine phosphorylase (MTAP)-deleted advanced solid tumors within indications of interest.
The purpose of this study is to evaluate safety, efficacy, and PK of IDE892 as monotherapy and combination therapy in adult participants with MTAP-deleted tumors who have progressed after standard therapy and represent a high unmet need. In the current stage, the combination will be focused on IDE892 with IDE397, an oral inhibitor of methionine adenosyltransferase 2A (MAT2A), to fully exploit the vulnerabilities associated with methylthioadenosine (MTA) accumulation in MTAP-deleted tumors while maintaining a substantial therapeutic index. The mechanistic rationale for this study is discussed in the following sections.
354 studies on the registry are indexed under Adenocarcinoma Of Esophagus; 81 are open to participants now.
This study's planned enrollment of 260 is above the median of 51 across 277 interventional studies indexed under Adenocarcinoma Of Esophagus.
Browse Adenocarcinoma Of Esophagus studies →IDEAYA Biosciences is the lead sponsor of 11 studies on the registry; 7 are open to participants now.
Counted across the registry records on this site, refreshed daily.
Go through the criteria one by one — yes, no or not sure — and take the list to your doctor or the study team. Kept in this browser only.
Exclusion Criteria:
Disease-Specific Eligibility Criteria Eligibility Criteria for Participants with NSCLC (All Parts)
Eligibility Criteria for Participants with Urothelial Cancer (Bladder and Upper Urinary Tract), Mesothelioma (Pleural or Peritoneal), Pancreatic Adenocarcinoma or Biliary Tract Carcinomas (Intrahepatic and Extrahepatic Cholangiocarcinoma, and Gallbladder Cancer) (Parts 1 and 3)
Underlined terms in the criteria open these too. Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.
The diagnosis was confirmed by looking at a sample under a microscope: tissue from a biopsy or surgery (histology), or cells from a fluid or needle sample (cytology).
Your pathology report is the document that shows this.
Cancer that has spread from where it began to other parts of the body. “Metastatic” cancer is cancer that has spread this way.
A line of therapy is one course of treatment, which may combine several drugs. First-line is the first course given; second-line follows when that stops working or is not tolerated.
“Two prior lines” means two courses that count separately under the study’s rules — not simply two drugs. Ask the study team if you are unsure how yours are counted.
A biopsy takes a small piece of tissue to examine. “Archival tissue” is a sample already taken, for example at diagnosis, and kept by the hospital.
Whether a stored sample will do depends on when it was taken, how much there is and what the study needs. Ask whether the study accepts your stored sample or needs a new biopsy.
The amount of disease can be tracked with a defined measurement, so the study can see whether it shrinks or grows. It might be a tumour measured on a scan or, in some blood cancers such as myeloma, a marker measured in blood or urine.
The criteria or the study team say which measurement counts — having no tumour visible on a scan does not by itself rule you out.
The standard rules for measuring tumours on CT or MRI scans, to tell whether a cancer is shrinking, stable or growing during treatment.
“Measurable disease per RECIST 1.1” usually means at least one tumour 10 mm or more at its longest on a CT scan, or a lymph node 15 mm or more across its short axis.
A scale of how much an illness limits everyday activity. For people being assessed to join a study, scores run from 0 (fully active) to 4; lower is more active.
Studies most often ask for 0–1 or 0–2. Your doctor gives the score; the WHO scale uses the same steps. The full scale also has 5, which records death.
The study doctor’s estimate of how long someone is likely to live. Criteria use it so that people can stay in the study long enough for it to answer its question.
Ways of preventing pregnancy. “Highly effective” methods fail less than 1% of the time a year when used correctly — for example an IUD or an implant.
Criteria usually say which methods count and how long to keep using them after the last dose, sometimes for male participants too. Some studies accept a partner’s vasectomy if it was confirmed successful and that person is the participant’s only sexual partner.
Cancer deposits in the brain from a cancer that started elsewhere in the body (CNS metastases include the spinal cord).
Studies differ: some leave out any brain metastases, some accept ones treated and stable for some weeks. Check what this study allows.
Anti-inflammatory medicines such as prednisone, prednisolone and dexamethasone — not the anabolic steroids used for muscle.
Studies differ in what they allow: check which steroid medicines, routes (tablets, injections, creams, inhalers, eye drops) and doses this study accepts.
Malignancy means cancer. Criteria about another or earlier malignancy ask whether you have had a different cancer, usually within a set number of years.
Some are commonly allowed, such as treated skin cancers other than melanoma and early cancers removed completely — check the exceptions this study lists.
Judged by the study doctor to matter for your health or for the study. It is a doctor’s decision, so ask the study team if you are unsure whether something counts.
The human immunodeficiency virus, which weakens the immune system.
Many studies now accept people whose HIV is controlled on treatment, judged by the viral load and the CD4 count. Check the limits this study sets.
The US National Cancer Institute’s scale of how severe an adverse event is — any unwanted medical event during a study, such as a symptom, an illness or an abnormal test result, whether or not a treatment caused it. Whether it did is judged separately.
“Side effects of earlier treatment resolved to grade 1 or less” means they have settled to mild or gone.
A drug or device being studied in a clinical trial.
It may be new, or already approved and being studied for another use, dose or form. Criteria often leave out people who took part in another study of one within a recent period, commonly 30 days or five half-lives.
CYP3A is a group of enzymes, mainly CYP3A4, in the liver and gut that break down many medicines. Some medicines, supplements and foods (grapefruit, St John’s wort) slow them down or speed them up, which changes how much of a study drug stays in the body.
Studies list them so they can be avoided or switched; bring a list of everything you take, including supplements.
On an ECG, the QT interval is the time the heart’s lower chambers take to activate electrically and recover in each beat. QTc is that time adjusted for heart rate (QTcF by Fridericia’s formula, QTcB by Bazett’s). Some medicines lengthen it, and a long QTc can raise the risk of a dangerous heart rhythm.
The study may name a correction formula and a limit in milliseconds, often around 450–480.
An allergy, or another reaction of the immune system, to a substance. “Hypersensitivity to the study drug” means a known allergic reaction to it — not every side effect a medicine can have.
PD-1, PD-L1 and CTLA-4 are proteins that act as brakes on the immune system. Checkpoint inhibitors, such as pembrolizumab or nivolumab, block them so the immune system can attack a cancer.
PD-L1 can also be measured in a tumour sample. Some scores count stained tumour cells only (TPS); others also count certain immune cells (CPS). The study names the score and the minimum it uses.
A reason a treatment, test or procedure should not be given to a particular person, such as an allergy, another illness or a medicine they take.
Histologically or cytologically confirmed
The diagnosis was confirmed by looking at a sample under a microscope: tissue from a biopsy or surgery (histology), or cells from a fluid or needle sample (cytology).
Your pathology report is the document that shows this.
Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.
Metastases
Cancer that has spread from where it began to other parts of the body. “Metastatic” cancer is cancer that has spread this way.
Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.
Line of therapy
A line of therapy is one course of treatment, which may combine several drugs. First-line is the first course given; second-line follows when that stops working or is not tolerated.
“Two prior lines” means two courses that count separately under the study’s rules — not simply two drugs. Ask the study team if you are unsure how yours are counted.
Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.
Biopsy and archival tissue
A biopsy takes a small piece of tissue to examine. “Archival tissue” is a sample already taken, for example at diagnosis, and kept by the hospital.
Whether a stored sample will do depends on when it was taken, how much there is and what the study needs. Ask whether the study accepts your stored sample or needs a new biopsy.
Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.
Measurable disease
The amount of disease can be tracked with a defined measurement, so the study can see whether it shrinks or grows. It might be a tumour measured on a scan or, in some blood cancers such as myeloma, a marker measured in blood or urine.
The criteria or the study team say which measurement counts — having no tumour visible on a scan does not by itself rule you out.
Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.
RECIST
The standard rules for measuring tumours on CT or MRI scans, to tell whether a cancer is shrinking, stable or growing during treatment.
“Measurable disease per RECIST 1.1” usually means at least one tumour 10 mm or more at its longest on a CT scan, or a lymph node 15 mm or more across its short axis.
Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.
ECOG performance status
A scale of how much an illness limits everyday activity. For people being assessed to join a study, scores run from 0 (fully active) to 4; lower is more active.
Studies most often ask for 0–1 or 0–2. Your doctor gives the score; the WHO scale uses the same steps. The full scale also has 5, which records death.
Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.
Life expectancy
The study doctor’s estimate of how long someone is likely to live. Criteria use it so that people can stay in the study long enough for it to answer its question.
Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.
Contraception
Ways of preventing pregnancy. “Highly effective” methods fail less than 1% of the time a year when used correctly — for example an IUD or an implant.
Criteria usually say which methods count and how long to keep using them after the last dose, sometimes for male participants too. Some studies accept a partner’s vasectomy if it was confirmed successful and that person is the participant’s only sexual partner.
Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.
Brain metastases
Cancer deposits in the brain from a cancer that started elsewhere in the body (CNS metastases include the spinal cord).
Studies differ: some leave out any brain metastases, some accept ones treated and stable for some weeks. Check what this study allows.
Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.
Corticosteroids (steroids)
Anti-inflammatory medicines such as prednisone, prednisolone and dexamethasone — not the anabolic steroids used for muscle.
Studies differ in what they allow: check which steroid medicines, routes (tablets, injections, creams, inhalers, eye drops) and doses this study accepts.
Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.
Cancer (malignancy)
Malignancy means cancer. Criteria about another or earlier malignancy ask whether you have had a different cancer, usually within a set number of years.
Some are commonly allowed, such as treated skin cancers other than melanoma and early cancers removed completely — check the exceptions this study lists.
Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.
Clinically significant
Judged by the study doctor to matter for your health or for the study. It is a doctor’s decision, so ask the study team if you are unsure whether something counts.
Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.
HIV
The human immunodeficiency virus, which weakens the immune system.
Many studies now accept people whose HIV is controlled on treatment, judged by the viral load and the CD4 count. Check the limits this study sets.
Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.
CTCAE grade
The US National Cancer Institute’s scale of how severe an adverse event is — any unwanted medical event during a study, such as a symptom, an illness or an abnormal test result, whether or not a treatment caused it. Whether it did is judged separately.
“Side effects of earlier treatment resolved to grade 1 or less” means they have settled to mild or gone.
Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.
Investigational drug or device
A drug or device being studied in a clinical trial.
It may be new, or already approved and being studied for another use, dose or form. Criteria often leave out people who took part in another study of one within a recent period, commonly 30 days or five half-lives.
Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.
CYP3A (CYP3A4) inhibitors and inducers
CYP3A is a group of enzymes, mainly CYP3A4, in the liver and gut that break down many medicines. Some medicines, supplements and foods (grapefruit, St John’s wort) slow them down or speed them up, which changes how much of a study drug stays in the body.
Studies list them so they can be avoided or switched; bring a list of everything you take, including supplements.
Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.
QT and QTc
On an ECG, the QT interval is the time the heart’s lower chambers take to activate electrically and recover in each beat. QTc is that time adjusted for heart rate (QTcF by Fridericia’s formula, QTcB by Bazett’s). Some medicines lengthen it, and a long QTc can raise the risk of a dangerous heart rhythm.
The study may name a correction formula and a limit in milliseconds, often around 450–480.
Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.
Hypersensitivity
An allergy, or another reaction of the immune system, to a substance. “Hypersensitivity to the study drug” means a known allergic reaction to it — not every side effect a medicine can have.
Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.
PD-1, PD-L1 and checkpoint inhibitors
PD-1, PD-L1 and CTLA-4 are proteins that act as brakes on the immune system. Checkpoint inhibitors, such as pembrolizumab or nivolumab, block them so the immune system can attack a cancer.
PD-L1 can also be measured in a tumour sample. Some scores count stained tumour cells only (TPS); others also count certain immune cells (CPS). The study names the score and the minimum it uses.
Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.
Contraindication
A reason a treatment, test or procedure should not be given to a particular person, such as an allergy, another illness or a medicine they take.
Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.
Participants with advanced or metastatic solid tumors harboring MTAP deletion (including mesothelioma, gastroesophageal cancers, pancreatic and biliary tract tumors, non-small cell lung cancer, and urothelial cancer) will receive IDE892. Dose levels will be escalated sequentially using a Bayesian Optimal Interval (BOIN) design to evaluate safety, tolerability, and to determine the maximum tolerated dose and/or recommended dose for expansion. PK and pharmacodynamics (PD) and preliminary antitumor activity will also be assessed.
Drug: IDE892
Participants with advanced or metastatic NSCLC with MTAP deletion will receive IDE892. One or more dose levels at or below the maximum tolerated dose from Part 1 will be further evaluated to determine the recommended Phase 2 dose and to assess antitumor activity.
Drug: IDE892
Participants with advanced or metastatic solid tumors harboring MTAP deletion (including mesothelioma, gastroesophageal cancers, pancreatic and biliary tract tumors, non-small cell lung cancer, and urothelial cancer) will receive IDE892 in combination with IDE397. Dose levels will be escalated using a modified toxicity probability interval (mTPI) design to evaluate safety, tolerability, and to determine the maximum tolerated dose and/or recommended dose for expansion. PK, PD, and preliminary antitumor activity will also be assessed.
Drug: IDE892 · Drug: IDE397
Participants with advanced or metastatic NSCLC with MTAP deletion will receive IDE892 in combination with IDE397. One or more dose levels at or below the maximum tolerated dose from Part 3 will be further evaluated to determine the recommended Phase 2 dose and to assess antitumor activity.
Drug: IDE892 · Drug: IDE397
IDE892 is an inhibitor of the Protein arginine methyltransferase 5 (PRMT5) that is being developed by IDEAYA Biosciences, Inc. as an anticancer therapeutic for patients with advanced or metastatic cancer harboring MTAP deletions.
IDE397 is an oral MAT2A inhibitor that is being developed by IDEAYA Biosciences, Inc. as an anticancer therapeutic for patients with advanced or metastatic cancer harboring MTAP deletions. In this study, IDE397 will be evaluated in combination with IDE892 (Parts 3 and 4) in participants with MTAP-deleted advanced solid tumors.
Incidence of Dose-limiting Toxicities (DLTs) of IDE892 (Parts 1 and 3)
Incidence of DLTs of IDE892 will be determined in Parts 1 and 3
Time frame: 21 days following the first dose of IDE892 (each cycle is 21 days)
Incidence of AEs and SAEs (Parts 1, 2, 3, and 4)
Incidence and severity of adverse events (AEs)/serious adverse events (SAEs) (graded based on Common Terminology Criteria for Adverse Events \[CTCAE\] version 5.0) will be determined in Parts 1, 2, 3, and 4.
Time frame: From first dose until 28 days after last dose (each cycle is 21 days)
Objective response rate (ORR) and duration of response (DOR) per Response Evaluation Criteria in Solid Tumors (RECIST) version 1.1 (Parts 2 and 4)
Objective response rate (ORR: best objective response of complete response \[CR\] + partial response \[PR\]) and duration of response (DOR) per Response Evaluation Criteria in Solid Tumors (RECIST) version 1.1 as assessed by the Investigator
Time frame: Approximately 2 years
Overall response rate (ORR) and duration of response (DOR) per RECIST version 1.1 (Parts 1 and 3)
ORR and DOR per RECIST version 1.1 as assessed by the Investigator
Time frame: Approximately 2 years
Disease control rate (DCR) and duration of stable disease per RECIST version 1.1 (Parts 1, 2, 3, and 4)
Disease control rate (disease control rate \[DCR\]: CR + PR + stable disease \[SD\]) and duration of SD per RECIST version 1.1 as assessed by the Investigator
Time frame: Approximately 2 years
Maximum Observed Plasma Concentration (Cmax) (Parts 1, 2, 3, and 4)
Cmax is the highest observed plasma concentration of the study drug following administration of IDE892 as a single agent or in combination with IDE397
Time frame: Cycle 1 Day 1 and Cycle 1 Day 15 (each cycle is 21 days)
Time to Maximum Observed Concentration (Tmax)
Time to Maximum Observed Concentration (Tmax) after administration of IDE892 as a single agent or in combination with IDE397
Time frame: Cycle 1 Day 1 and Cycle 1 Day 15 (each cycle is 21 days)
Area Under the Plasma Concentration-Time Curve From Time Zero to Last Quantifiable Concentration (AUClast)
AUClast reflects total drug exposure from dosing until the last measurable concentration after administration of IDE892 as a single agent or in combination with IDE397
Time frame: Cycle 1 Day 1 and Cycle 1 Day 15 (each cycle is 21 days)
Time of Last Quantifiable Concentration (Tlast)
Tlast is the time at which the final measurable drug concentration is observed after administration of IDE892 as a single agent or in combination with IDE397
Time frame: Cycle 1 Day 1 and Cycle 1 Day 15 (each cycle is 21 days)
Area Under the Plasma Concentration-Time Curve From Time Zero to Infinity (AUCinf)
AUCinf represents total drug exposure extrapolated to infinite time after administration of IDE892 as a single agent or in combination with IDE397
Time frame: Cycle 1 Day 1 and Cycle 1 Day 15 (each cycle is 21 days)
Terminal Elimination Half-Life (t½)
t½ is the time required for the plasma concentration of the drug to decrease by half during the terminal elimination phase after administration of IDE892 as a single agent or in combination with IDE397
Time frame: Cycle 1 Day 1 and Cycle 1 Day 15 (each cycle is 21 days)
Maximum Observed Plasma Concentration at Steady State (Cmax,ss)
Cmax,ss is the maximum observed plasma concentration after achieving steady state after administration of IDE892 as a single agent or in combination with IDE397
Time frame: Cycle 1 Day 15 (each cycle is 21 days)
Time to Maximum Concentration at Steady State (Tmax,ss)
Tmax,ss is the time from dosing to Cmax at steady state after administration of IDE892 as a single agent or in combination with IDE397
Time frame: Cycle 1 Day 15 (each cycle is 21 days)
Trough Plasma Concentration at Steady State (Ctrough)
Ctrough is the concentration obtained immediately prior to the next scheduled dose at steady state after administration of IDE892 as a single agent or in combination with IDE397
Time frame: Cycle 1 Day 15 (each cycle is 21 days)
Area Under the Plasma Concentration-Time Curve Over the Dosing Interval (AUCtau)
AUCtau represents drug exposure over one full dosing interval at steady state after administration of IDE892 as a single agent or in combination with IDE397
Time frame: Cycle 1 Day 15 (each cycle is 21 days)
Apparent Clearance (CL/F)
CL/F is the apparent clearance of the drug after extravascular dosing after administration of IDE892 as a single agent or in combination with IDE397
Time frame: Cycle 1 Day 1 and Cycle 1 Day 15 (each cycle is 21 days)
Apparent Volume of Distribution (Vz/F)
Vz/F is the apparent volume of distribution following extravascular dosing after administration of IDE892 as a single agent or in combination with IDE397
Time frame: Cycle 1 Day 1 and Cycle 1 Day 15 (each cycle is 21 days)
Accumulation Ratio (Rac)
Rac is calculated as the ratio of AUC or Cmax at steady state compared with first dose, reflecting drug accumulation after administration of IDE892 as a single agent or in combination with IDE397
Time frame: Cycle 1 Day 1 and Cycle 1 Day 15 (each cycle is 21 days)
From the registry record's own update history. This site started tracking changes on Sep 25, 2026; for anything earlier, see the record history on ClinicalTrials.gov ↗
Eligibility is decided by the study team. Share this record with your doctor or contact the team directly.
Contact study teamGet an email when the registry record changes — status, dates, results — or when someone posts here.
Sign in to followQuestions and observations about this study, from anyone following it. Not medical advice, and not a channel to the study team — their contact details are on the registry record.
Sign in to join the discussion. Reading takes no account; posting does. You choose a display name, and a pseudonym is the default.
Nothing here yet. If you are running this trial, taking part in it, or weighing whether to, this is the place to say so.
IDEAYA Biosciences