Clinical Stage III Gastric Cancer AJCC v8Phase 2NCT03641313
Berzosertib and Irinotecan in Treating Patients With Progressive, Metastatic, or Unresectable TP53 Mutant Gastric or Gastroesophageal Junction Cancer
A Phase 2 study testing Berzosertib, Computed Tomography Assisted Biopsy and Endoscopic Biopsy in people with Clinical Stage III Gastric Cancer AJCC v8 and Clinical Stage III Gastroesophageal Junction Adenocarcinoma AJCC v8, run by National Cancer Institute (NCI) at 31 sites in United States.
Trial summary
This phase II trial studies the how well berzosertib and irinotecan work in treating patients with gastric or gastroesophageal junction cancer that is growing, spreading or getting worse (progressive), has spread to other places in the body (metastatic), or cannot be removed by surgery (unresectable). Read more about this study
- Who is it for?
- Ages 18 years and older
- Conditions the study is for
- Clinical Stage III Gastric Cancer AJCC v8, Clinical Stage III Gastroesophageal Junction Adenocarcinoma AJCC v8, Clinical Stage IV Gastric Cancer AJCC v8
- What is being tested?
- Berzosertib, Computed Tomography Assisted Biopsy and Endoscopic Biopsy
- Type of treatment
- Injection or infusion, Surgery or procedure
- Could I receive a placebo?
- No, everyone receives an active treatment
- How many people
- 17 participants
- Where
- 31 sitesUnited States
- Study dates
- 16 Nov 2020to 14 Sep 2026
- Phase
- Phase 2
- Are there results?
- Yes, posted in the registrySummary in the doctors' view
Key requirements
Who can take part, as listed by the sponsor. Only the study team can confirm whether you are eligible, so take this list to your doctor.
- Ages 18 years and older
- All sexes
- No healthy volunteers
- Adult, Older adult
Who may be able to join
- Patients must have histologically or cytologically confirmed progressive metastatic or unresectable gastric or GEJ adenocarcinoma.
- Patients must have measurable disease, defined as at least one lesion that can be accurately measured in at least one dimension (longest diameter to be recorded for non-nodal lesions and short axis for nodal lesions) as >= 20 mm (>= 2 cm) by chest x-ray or as >= 10 mm (>= 1 cm) with computed tomography (CT) scan, magnetic resonance imaging (MRI), or calipers by clinical exam.
- Patients must have progressed after or been intolerant of at least two lines of systemic therapy. Patients with HER2 positive gastric and GEJ adenocarcinoma must have progressed on trastuzumab plus chemotherapy in the first line setting. Patients with microsatellite unstable (MSI-H) tumors must have received prior immunotherapy with pembrolizumab.
- Age >= 18 years. Because no dosing or adverse event data are currently available on the use of M6620 in combination with irinotecan in patients < 18 years of age, children are excluded from this study, but will be eligible for future pediatric trials.
- Both men and women of all races and ethnic groups are eligible for this trial.
- Eastern Cooperative Oncology Group (ECOG) performance status =< 1 (Karnofsky >= 60%).
Show all 17Show fewer
- Leukocytes >= 3,000/mcL.
- Absolute neutrophil count >= 1,500/mcL.
- Platelets >= 100,000/mcL.
- Hemoglobin >= 9 g/dL.
- Total bilirubin within normal institutional limits.
- Aspartate aminotransferase (AST) (serum glutamic oxaloacetic transaminase [SGOT])/alanine aminotransferase (serum glutamic pyruvic transaminase [SGPT]) =< 2.5 x institutional upper limit of normal (ULN); if liver involvement =< 5 x ULN.
- Creatinine clearance >= 45 mL/min/1.73 m^2 for patients with creatinine levels above institutional normal.
- Patients must have a TP53 mutation (only those known hot-spot mutations that fall within exon 2 or exons 4-11 will be accepted) determined from available archived tumor tissue that has been subjected to next generation sequencing (NGS) through FoundationOne/FoundationOneCDx or a similar assay performed in a Clinical Laboratory Improvement Amendments (CLIA)-certified laboratory. Investigators from other sites, who have potential patients who meet study eligibility, will send copies of NGS reports from these patients via Medidata Rave case reports to the responsible study coordinator. Our research team will review each report to ensure each patient possesses the mutations of interest. Similar review will happen for each patient we enroll on the study at our institution. Case reports from all screened patients will be centrally available on the Rave study database.
- Nine patients must be willing to undergo endoscopic or CT guided tumor biopsies for mandatory correlative studies. If the biopsy is deemed not safe by the treating physician, the patient may still enroll given that the other eligibility criteria are met.
- The effects of M6620 on the developing human fetus are unknown. For this reason and because deoxyribonucleic acid (DNA)-damage response (DDR) inhibitors, as well as irinotecan, are known to be teratogenic, women of child-bearing potential and men able to father children who have female partners of child-bearing potential must agree to use adequate contraception (hormonal or barrier method of birth control; abstinence) prior to study entry, for the duration of study participation, and for 6 months after trial participant's final dose of M6620 or irinotecan (whichever agent is completed last). Should a woman become pregnant or suspect she is pregnant while she or her partner is participating in this study, she should inform her treating physician immediately.
- Ability to understand and the willingness to sign a written informed consent document.
Who cannot join
- Patients with early stage untreated or resectable gastric adenocarcinoma.
- Patients who have had chemotherapy or radiotherapy within 4 weeks (6 weeks for nitrosoureas or mitomycin C) prior to entering the study.
- Patients who have previously received irinotecan.
- Patients who have not recovered from adverse events due to prior anti-cancer therapy (i.e., have residual toxicities > grade 1, except alopecia) that was administered more than four weeks prior to starting study therapy.
- Patients who are receiving any other investigational agents.
- Patients with untreated or symptomatic brain metastases should be excluded from this clinical trial because of their poor prognosis and because they often develop progressive neurologic dysfunction that would confound the evaluation of neurologic and other adverse events.
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- History of allergic reactions attributed to compounds of similar chemical or biologic composition to M6620 or irinotecan.
- M6620 is primarily metabolized by CYP3A4, and irinotecan and its active metabolite, SN-38, are metabolized by CYP3A4 and UGT1A1, respectively; therefore, concomitant administration with strong inhibitors of CYP3A4 (e.g., ketoconazole, itraconazole, clarithromycin, ritonavir, indinavir, nelfinavir and saquinavir) or inducers of CYP3A4 (e.g. rifampin, phenytoin, carbamazepine, phenobarbital, St. John's Wort) should be avoided. Because the lists of these agents are constantly changing, it is important to regularly consult a frequently-updated medical reference for a list of drugs to avoid or minimize use of. As part of the enrollment/informed consent procedures, the patient will be counseled on the risk of interactions with other agents, and what to do if new medications need to be prescribed or if the patient is considering a new over-the-counter medicine or herbal product.
- Uncontrolled intercurrent illness including, but not limited to, ongoing or active infection, symptomatic congestive heart failure, unstable angina pectoris, cardiac arrhythmia, or psychiatric illness/social situations that would limit compliance with study requirements.
- Pregnant women are excluded from this study because M6620 as a DNA-damage response (DDR) inhibitor may have the potential for teratogenic or abortifacient effects. Because there is an unknown but potential risk for adverse events in nursing infants secondary to treatment of the mother with M6620, breastfeeding should be discontinued if the mother is treated with M6620. These potential risks also apply to irinotecan.
- Human immunodeficiency virus (HIV)-positive patients are excluded unless they have an undetectable viral load and are able to use anti-viral agents that do not interact with CYP3A4 (or regimens with agents that are not major inhibitors of cytochrome P450 enzymes).
- History of other malignancy within 36 months prior to enrollment. Patients with local cancers of any type, provided no recurrence over this timeframe, are eligible.
Trial locations and contacts
31 sites in 1 country.
31 sites in 1 country
United States31 sites
Northwestern University
Chicago, Illinois, 60611
Wake Forest University at Clemmons
Clemmons, North Carolina, 27012
Ohio State University Comprehensive Cancer Center
Columbus, Ohio, 43210
UM Sylvester Comprehensive Cancer Center at Coral Gables
Coral Gables, Florida, 33146
UM Sylvester Comprehensive Cancer Center at Deerfield Beach
Deerfield Beach, Florida, 33442
City of Hope Comprehensive Cancer Center
Duarte, California, 91010
University of Kansas Clinical Research Center
Fairway, Kansas, 66205
HaysMed
Hays, Kansas, 67601
University Health Truman Medical Center
Kansas City, Missouri, 64108
University of Kansas Cancer Center - North
Kansas City, Missouri, 64154
Lawrence Memorial Hospital
Lawrence, Kansas, 66044
University of Kansas Cancer Center - Lee's Summit
Lee's Summit, Missouri, 64064
Los Angeles General Medical Center
Los Angeles, California, 90033
USC / Norris Comprehensive Cancer Center
Los Angeles, California, 90033
University of Miami Miller School of Medicine-Sylvester Cancer Center
Miami, Florida, 33136
UM Sylvester Comprehensive Cancer Center at Kendall
Miami, Florida, 33176
Vanderbilt University/Ingram Cancer Center
Nashville, Tennessee, 37232
University of Kansas Cancer Center at North Kansas City Hospital
North Kansas City, Missouri, 64116
University of Oklahoma Health Sciences Center
Oklahoma City, Oklahoma, 73104
The University of Kansas Cancer Center - Olathe
Olathe, Kansas, 66061
UC Irvine Health/Chao Family Comprehensive Cancer Center
Orange, California, 92868
University of Kansas Cancer Center-Overland Park
Overland Park, Kansas, 66210
Mercy Hospital Pittsburg
Pittsburg, Kansas, 66762
UM Sylvester Comprehensive Cancer Center at Plantation
Plantation, Florida, 33324
University of California Davis Comprehensive Cancer Center
Sacramento, California, 95817
Salina Regional Health Center
Salina, Kansas, 67401
Huntsman Cancer Institute/University of Utah
Salt Lake City, Utah, 84112
University of Kansas Health System Saint Francis Campus
Topeka, Kansas, 66606
University of Kansas Hospital-Westwood Cancer Center
Westwood, Kansas, 66205
Wake Forest Baptist Health - Wilkes Medical Center
Wilkesboro, North Carolina, 28659
Wake Forest University Health Sciences
Winston-Salem, North Carolina, 27157
About this study
Official title: A Phase 2 Single-Arm Study of M6620 in Combination With Irinotecan in Patients With Progressive TP53 Mutant Gastric and Gastro-Esophageal Junction Cancer
This phase II trial studies the how well berzosertib and irinotecan work in treating patients with gastric or gastroesophageal junction cancer that is growing, spreading or getting worse (progressive), has spread to other places in the body (metastatic), or cannot be removed by surgery (unresectable). Berzosertib may stop the growth of tumor cells by blocking some of the enzymes needed for growth. Chemotherapy drugs, such as irinotecan, work in different ways to stop the growth of tumor cells, either by killing the cells, by stopping them from dividing, or by stopping them from spreading. Giving berzosertib and irinotecan may work better than irinotecan alone in treating patients with gastric and gastroesophageal junction cancer.
Read the detailed description
PRIMARY OBJECTIVE:
- Determine objective response rate (ORR) superiority (target 25%) in TP53 mutant patients with progressive metastatic or unresectable gastric/gastroesophageal junction (GEJ) cancer who receive berzosertib (M6620) and irinotecan compared to ORR (5%) in historical control patients treated with single agent irinotecan alone.
SECONDARY OBJECTIVES:
- Determine duration of response (DOR), time to progression (TTP), progression-free survival (PFS), and overall survival (OS) superiority in TP53 mutant gastric/GEJ cancer patients who receive M6620 and irinotecan compared to these measures in historical control patients treated with irinotecan alone.
II. Perform the following correlative studies in 9 patients: gamma-H2AX, KAP1 phosphorylated (p)-Ser 824 and p-ATR analysis from biopsies collected at 24 hours (+/- 1 hour) post-irinotecan infusion on cycle 1 day 2 (C1D2) and at 24 hours (+/- 1 hour) post-M6620 on cycle 2 day 2 (C2D2).
EXPLORATORY OBJECTIVES:
- Determine ORR, DOR, TTP, PFS, and OS in patients with other concomitant damage response defects (DDRD), such as mutations in BRCA1, BRCA2, MRE11, RAD50, RAD51, RAD52, RAD54L, NBN, ATM, H2AX, PALB2, RPA, BRIP1, BARD1, ATR, ATRX, CHK1, CHK2, MDM2, MDM4, FANCA, FANCC, FANCD2, FANCE, FANCF, FANCG, FANCL, treated with the experimental combination.
II. Determine whether patients with first line platinum sensitivity (PFS > 3 months) demonstrate improved ORR, DOR, TTP, PFS, and OS compared to patients who were platinum insensitive (PFS < 3 months).
OUTLINE:
Patients receive irinotecan intravenously (IV) over 90 minutes and berzosertib IV over 60 minutes on days 1 and 15. Cycles repeat every 28 days in the absence of disease progression or unacceptable toxicity. Patients undergo endoscopic or computed tomography (CT) assisted biopsy and magnetic resonance imaging (MRI) on study.
After completion of study treatment, patients are followed up for 30 days and then every 2 months for up to 1 year.
- Conditions
- Clinical Stage III Gastric Cancer AJCC v8, Clinical Stage III Gastroesophageal Junction Adenocarcinoma AJCC v8, Clinical Stage IV Gastric Cancer AJCC v8, Clinical Stage IV Gastroesophageal Junction Adenocarcinoma AJCC v8, Metastatic Gastric Adenocarcinoma, Metastatic Gastroesophageal Junction Adenocarcinoma
- Being tested
- Berzosertib, Computed Tomography Assisted Biopsy, Endoscopic Biopsy, Irinotecan, Magnetic Resonance Imaging
What participants receive
What participants receive. In a randomised study each person is assigned to one group by chance.
BerzosertibDrug
Also called 2-Pyrazinamine, 3-(3-(4-((Methylamino)methyl)phenyl)-5-isoxazolyl)-5-(4-((1-methylethyl)sulfonyl)phenyl)-, M 6620, M6620, VX 970
Given IV
Computed Tomography Assisted BiopsyProcedure or surgery
Also called Computed Tomography Biopsy, Computed Tomography-Guided Needle Biopsy, CT Assisted Biopsy, CT Guided Biopsy
Undergo CT assisted biopsy
Endoscopic BiopsyProcedure or surgery
Also called Endoscopy and Biopsy
Undergo endoscopic biopsy
IrinotecanDrug
Given IV
Magnetic Resonance ImagingProcedure or surgery
Also called Magnetic Resonance, Magnetic Resonance Imaging (MRI), Magnetic resonance imaging (procedure), Magnetic Resonance Imaging Scan
Undergo MRI
| Study group | Role | What they receive |
|---|---|---|
| Treatment (irinotecan and M6620) | Experimental | Patients receive irinotecan IV over 90 minutes and berzosertib IV over 60 minutes on days 1 and 15. Cycles repeat every 28 days in the absence of disease progression or unacceptable toxicity. Patients undergo endoscopic or CT assisted biopsy and MRI on study. Receives: Drug: Berzosertib; Procedure: Computed Tomography Assisted Biopsy; Procedure: Endoscopic Biopsy; Drug: Irinotecan; Procedure: Magnetic Resonance Imaging |
What is being measured
The primary outcome is the main question the study is designed to answer.
Objective Response Rate (ORR) According to Response Evaluation Criteria in Solid Tumors (RECIST) 1.1 Response Criteria
Number of patients that achieved either a partial response or complete response as measured by Response Evaluation Criteria in Solid Tumors (RECIST) 1.1 response criteria. Per RECIST v.1.1 assessed by CT or MRI: complete response (CR) is disappearance of all target lesions; partial response (PR) is >=30% decrease in the sum of the longest diameter of target lesions; Overall response (OR) = CR + PR.
Measured: Up to 1 year
Secondary outcomes (4)
Duration of Responses (DOR)
As 0 participants achieved a response (either complete response or partial response), data for this outcome measure can not be calculated.
Measured: From when patients achieve their best response (complete response [CR] or partial response [PR]) to when they progress or die for any reason, assessed up to 1 year
Time to Progression (TTP)
Time to progression was calculated for all participants. Progression was defined as: 1) using the Response Evaluation Criteria In Solid Tumors Criteria (RECIST v1.1), as a 20% increase in the sum of the longest diameter of target lesions, a measurable increase in a non-target lesion, or the appearance of new lesions; and 2) clinical progression as defined by participant's treating physician. This measure was estimated using the method of Kaplan and Meier and presented with 95% confidence intervals.
Measured: From start of treatment to time of progression or death from progression, assessed up to 1 year
Progression-free Survival (PFS)
Progression-free survival was calculated for all participants. Progression was defined as: 1) using the Response Evaluation Criteria In Solid Tumors Criteria (RECIST v1.1), as a 20% increase in the sum of the longest diameter of target lesions, a measurable increase in a non-target lesion, or the appearance of new lesions; and 2) clinical progression as defined by participant's treating physician. This measure was estimated using the method of Kaplan and Meier and presented with 95% confidence intervals.
Measured: From enrollment to disease progression or death for any reason, assessed up to 1 year
Overall Survival (OS)
Overall survival was calculated for all participants. Will be estimated using the method of Kaplan and Meier and presented with 95% confidence intervals.
Measured: From study enrollment to death for any reason, assessed up to 1 year
Timeline
From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.
- First posted22 Aug 2018
- Study start16 Nov 2020
- Primary completion1 Jul 2024
- Study completion14 Sep 2026
Resources
- Official record on ClinicalTrials.govThe registry entry this page is built from, with its full change history.
- Posted resultsParticipant flow, outcome measures and adverse events reported by the sponsor.
- Publications (1)Papers the sponsor has linked to this study.
- Other trials for Clinical Stage III Gastric Cancer AJCC v8Studies of the same condition, open and under way.
- More trials run by National Cancer Institute (NCI)The sponsor's other registered studies.
- What the trial phases meanHow a treatment moves from first tests in people to approval.
More details
For doctors and researchers: how the study is designed, who runs it, and its registry IDs.
Study design
- Study type
- Interventional
- Phase
- Phase 2
- Primary purpose
- Treatment
- Allocation
- Not applicable
- Intervention model
- Single group
- Masking
- None (open label)
- Enrolment
- 17 participants (actual)
Sponsor and investigators
- Lead sponsor
- National Cancer Institute (NCI)
- Sponsor type
- US National Institutes of Health
- Responsible party
- Sponsor
- Investigators
- Jordan D Berlin, Principal investigator, Yale University Cancer Center LAO
IDs, dates and publications
- ClinicalTrials.gov ID
- NCT03641313
- Sponsor's protocol ID
- NCI-2018-01739
- Other IDs
- NCI-2018-01739, VICC LOI#18012, 10211, 10211, UM1CA186689
- Status last verified
- Sep 2026
- First submitted
- 21 Aug 2018
- Last updated
- 20 Oct 2026
- Results posted
- Yes, on ClinicalTrials.gov
- Data monitoring committee
- No
- FDA-regulated drug
- Yes
- FDA-regulated device
- No
- Individual data sharing
- Yes: NCI is committed to sharing data in accordance with NIH policy. For more details on how clinical trial data is shared, access the link to the NIH data sharing policy page
Publications
Wheless MC, Stockton S, Soares HP, Dayyani F, Saeed A, Kim E, Jin N, Yacoub G, Florou V, Ayers GD, Guerrouahen BS, Contreras A, Li L, Ferry-Galow KV, Gore S, Das S, Berlin J. NCI 10211: a phase II, single-arm study of berzosertib in combination with irinotecan in patients with advanced TP53 mutant gastroesophageal cancer. Oncologist. 2025 Dec 1;30(12):oyaf400. doi: 10.1093/oncolo/oyaf400.
PubMed 41335461
Study at a glance
From the registry record, last updated by the sponsor on 20 Oct 2026. Recruitment status is as the sponsor reported it: confirm with the study team.
- Official title
- A Phase 2 Single-Arm Study of M6620 in Combination With Irinotecan in Patients With Progressive TP53 Mutant Gastric and Gastro-Esophageal Junction Cancer
- ClinicalTrials.gov ID
- NCT03641313
- Acronym / sponsor ID
- NCI-2018-01739
- Conditions
- Clinical Stage III Gastric Cancer AJCC v8, Clinical Stage III Gastroesophageal Junction Adenocarcinoma AJCC v8, Clinical Stage IV Gastric Cancer AJCC v8, Clinical Stage IV Gastroesophageal Junction Adenocarcinoma AJCC v8, Metastatic Gastric Adenocarcinoma, Metastatic Gastroesophageal Junction Adenocarcinoma
- Phase
- Phase 2
- Study type
- Interventional
- Recruitment status
- Completed
- Enrolment
- 17 participants (actual)
- Lead sponsor
- National Cancer Institute (NCI)US National Institutes of Health
- Study start
- 16 Nov 2020 (actual)
- Primary completion
- 1 Jul 2024 (actual)
- Study completion
- 14 Sep 2026 (actual)
- First posted
- 22 Aug 2018 (actual)
- Results
- Posted 8 Jul 2025
Clinical summary
The research question as the sponsor registered it. This describes what the study plans to test, not what it found.
This phase II trial studies the how well berzosertib and irinotecan work in treating patients with gastric or gastroesophageal junction cancer that is growing, spreading or getting worse (progressive), has spread to other places in the body (metastatic), or cannot be removed by surgery (unresectable). Berzosertib may stop the growth of tumor cells by blocking some of the enzymes needed for growth. Chemotherapy drugs, such as irinotecan, work in different ways to stop the growth of tumor cells, either by killing the cells, by stopping them from dividing, or by stopping them from spreading. Giving berzosertib and irinotecan may work better than irinotecan alone in treating patients with gastric and gastroesophageal junction cancer.
Detailed description
PRIMARY OBJECTIVE:
- Determine objective response rate (ORR) superiority (target 25%) in TP53 mutant patients with progressive metastatic or unresectable gastric/gastroesophageal junction (GEJ) cancer who receive berzosertib (M6620) and irinotecan compared to ORR (5%) in historical control patients treated with single agent irinotecan alone.
SECONDARY OBJECTIVES:
- Determine duration of response (DOR), time to progression (TTP), progression-free survival (PFS), and overall survival (OS) superiority in TP53 mutant gastric/GEJ cancer patients who receive M6620 and irinotecan compared to these measures in historical control patients treated with irinotecan alone.
II. Perform the following correlative studies in 9 patients: gamma-H2AX, KAP1 phosphorylated (p)-Ser 824 and p-ATR analysis from biopsies collected at 24 hours (+/- 1 hour) post-irinotecan infusion on cycle 1 day 2 (C1D2) and at 24 hours (+/- 1 hour) post-M6620 on cycle 2 day 2 (C2D2).
EXPLORATORY OBJECTIVES:
- Determine ORR, DOR, TTP, PFS, and OS in patients with other concomitant damage response defects (DDRD), such as mutations in BRCA1, BRCA2, MRE11, RAD50, RAD51, RAD52, RAD54L, NBN, ATM, H2AX, PALB2, RPA, BRIP1, BARD1, ATR, ATRX, CHK1, CHK2, MDM2, MDM4, FANCA, FANCC, FANCD2, FANCE, FANCF, FANCG, FANCL, treated with the experimental combination.
II. Determine whether patients with first line platinum sensitivity (PFS > 3 months) demonstrate improved ORR, DOR, TTP, PFS, and OS compared to patients who were platinum insensitive (PFS < 3 months).
OUTLINE:
Patients receive irinotecan intravenously (IV) over 90 minutes and berzosertib IV over 60 minutes on days 1 and 15. Cycles repeat every 28 days in the absence of disease progression or unacceptable toxicity. Patients undergo endoscopic or computed tomography (CT) assisted biopsy and magnetic resonance imaging (MRI) on study.
After completion of study treatment, patients are followed up for 30 days and then every 2 months for up to 1 year.
Study design
- Primary purpose
- Treatment
- Allocation
- Not applicable
- Intervention model
- Single group
- Masking
- None (open label)
- Number of arms
- 1
| Arm | Type | Receives |
|---|---|---|
| Treatment (irinotecan and M6620) | Experimental | Drug: Berzosertib, Procedure: Computed Tomography Assisted Biopsy, Procedure: Endoscopic Biopsy, Drug: Irinotecan, Procedure: Magnetic Resonance ImagingPatients receive irinotecan IV over 90 minutes and berzosertib IV over 60 minutes on days 1 and 15. Cycles repeat every 28 days in the absence of disease progression or unacceptable toxicity. Patients undergo endoscopic or CT assisted biopsy and MRI on study. |
Who may qualify
- Ages
- 18 years and older
- Sex
- All
- Healthy volunteers
- Not accepted
- Age groups
- Adult, Older adult
Key inclusion criteria (17 listed)
- Patients must have histologically or cytologically confirmed progressive metastatic or unresectable gastric or GEJ adenocarcinoma.
- Patients must have measurable disease, defined as at least one lesion that can be accurately measured in at least one dimension (longest diameter to be recorded for non-nodal lesions and short axis for nodal lesions) as >= 20 mm (>= 2 cm) by chest x-ray or as >= 10 mm (>= 1 cm) with computed tomography (CT) scan, magnetic resonance imaging (MRI), or calipers by clinical exam.
- Patients must have progressed after or been intolerant of at least two lines of systemic therapy. Patients with HER2 positive gastric and GEJ adenocarcinoma must have progressed on trastuzumab plus chemotherapy in the first line setting. Patients with microsatellite unstable (MSI-H) tumors must have received prior immunotherapy with pembrolizumab.
- Age >= 18 years. Because no dosing or adverse event data are currently available on the use of M6620 in combination with irinotecan in patients < 18 years of age, children are excluded from this study, but will be eligible for future pediatric trials.
- Both men and women of all races and ethnic groups are eligible for this trial.
Key exclusion criteria (12 listed)
- Patients with early stage untreated or resectable gastric adenocarcinoma.
- Patients who have had chemotherapy or radiotherapy within 4 weeks (6 weeks for nitrosoureas or mitomycin C) prior to entering the study.
- Patients who have previously received irinotecan.
- Patients who have not recovered from adverse events due to prior anti-cancer therapy (i.e., have residual toxicities > grade 1, except alopecia) that was administered more than four weeks prior to starting study therapy.
- Patients who are receiving any other investigational agents.
Eligibility is decided by the study team after screening; this overview does not establish that a patient qualifies. Full inclusion and exclusion criteria.
Interventions
| Intervention | Type | Arms |
|---|---|---|
| BerzosertibAlso: 2-Pyrazinamine, 3-(3-(4-((Methylamino)methyl)phenyl)-5-isoxazolyl)-5-(4-((1-methylethyl)sulfonyl)phenyl)-, M 6620, M6620, VX 970Given IV | Drug | Treatment (irinotecan and M6620) |
| Computed Tomography Assisted BiopsyAlso: Computed Tomography Biopsy, Computed Tomography-Guided Needle Biopsy, CT Assisted Biopsy, CT Guided BiopsyUndergo CT assisted biopsy | Procedure or surgery | Treatment (irinotecan and M6620) |
| Endoscopic BiopsyAlso: Endoscopy and BiopsyUndergo endoscopic biopsy | Procedure or surgery | Treatment (irinotecan and M6620) |
| IrinotecanGiven IV | Drug | Treatment (irinotecan and M6620) |
| Magnetic Resonance ImagingAlso: Magnetic Resonance, Magnetic Resonance Imaging (MRI), Magnetic resonance imaging (procedure), Magnetic Resonance Imaging ScanUndergo MRI | Procedure or surgery | Treatment (irinotecan and M6620) |
Primary outcome
Objective Response Rate (ORR) According to Response Evaluation Criteria in Solid Tumors (RECIST) 1.1 Response Criteria
Time frame: Up to 1 year
Number of patients that achieved either a partial response or complete response as measured by Response Evaluation Criteria in Solid Tumors (RECIST) 1.1 response criteria. Per RECIST v.1.1 assessed by CT or MRI: complete response (CR) is disappearance of all target lesions; partial response (PR) is >=30% decrease in the sum of the longest diameter of target lesions; Overall response (OR) = CR + PR.
4 secondary outcomes
Duration of Responses (DOR)
Time frame: From when patients achieve their best response (complete response [CR] or partial response [PR]) to when they progress or die for any reason, assessed up to 1 year
Time to Progression (TTP)
Time frame: From start of treatment to time of progression or death from progression, assessed up to 1 year
Progression-free Survival (PFS)
Time frame: From enrollment to disease progression or death for any reason, assessed up to 1 year
Overall Survival (OS)
Time frame: From study enrollment to death for any reason, assessed up to 1 year
Results and safety
Loading the posted results from ClinicalTrials.gov…
Research links
- Official record on ClinicalTrials.govLast updated by the sponsor 20 Oct 2026.
- Posted resultsParticipant flow, baseline, all outcome measures and adverse events.
- Derived from this study: PubMed 41335461Wheless MC, Stockton S, Soares HP, Dayyani F, Saeed A, Kim E, Jin N, Yacoub G, Florou V, Ayers GD, Guerrouahen BS, Contreras A, Li L, Ferry-Galow KV, Gore S, Das S, Berlin J. NCI 10211: a phase II, single-arm study of berzosertib in combination with irinotecan in patients with advanced TP53 mutant gastroesophageal cancer. Oncologist. 2025 Dec 1;30(12):oyaf400. doi: 10.1093/oncolo/oyaf400.
- Individual participant dataSharing planned: Yes. NCI is committed to sharing data in accordance with NIH policy. For more details on how clinical trial data is shared, access the link to the NIH data sharing policy page
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Referral and contact
AzTrials does not enrol participants or take referrals. Contact the study team or a site listed below; they decide who can take part. This study is not recruiting at the moment.
Jordan D Berlin principal investigator
Yale University Cancer Center LAO
31 sites in 1 country: see every site and its status.
Questions about this trial
What is this clinical trial studying?
A Phase 2 study testing Berzosertib, Computed Tomography Assisted Biopsy and Endoscopic Biopsy in people with Clinical Stage III Gastric Cancer AJCC v8 and Clinical Stage III Gastroesophageal Junction Adenocarcinoma AJCC v8, run by National Cancer Institute (NCI) at 31 sites in United States.
The full registered description is in the About this study section and the official record.
Who may be eligible to take part?
The sponsor lists 17 inclusion and 12 exclusion criteria. Eligibility is decided by the study team after screening, so read the full criteria and contact a listed site.
Is this clinical trial currently recruiting?
The record says: finished, as of the sponsor's last update on 20 Oct 2026. Status can change between updates, so confirm with the study contact before making plans.
Where is the study taking place?
The record lists 31 sites in United States. Whether a site is taking part right now should be confirmed with that site. See every site.
What are the possible benefits and risks?
They depend on the study and the treatment, and no study can promise a benefit. The study team explains the known risks during informed consent, before anyone joins; the record itself does not list them.
What does this phase mean?
Phase 2 studies give the treatment to a larger group to see whether it has the intended effect and to keep checking safety.
Not every study follows the same path, and some studies (observational studies, device studies) have no phase.
Are results available for this study?
Yes. Results are posted in the registry (first posted 8 Jul 2025). A summary is in the For doctors view, and the full results are on ClinicalTrials.gov.
How can a doctor refer a patient or contact the research team?
The record lists no contact. The official record names the sponsor, who can be asked directly. AzTrials does not enrol participants or take referrals.
What does the primary outcome measure?
Objective Response Rate (ORR) According to Response Evaluation Criteria in Solid Tumors (RECIST) 1.1 Response Criteria (time frame: Up to 1 year). It is what the study was designed to measure, not a finding.
Where can I read the original study information?
On the ClinicalTrials.gov record for NCT03641313, which also lists 1 linked publication.
Does a listing mean the treatment is approved or proven to work?
No. A listing means the study is registered. It does not show that the treatment is safe, works, or is approved by a regulator.
How often is this information updated?
AzTrials copies changed records from ClinicalTrials.gov every night and reloads the whole registry every week. The sponsor last updated this record on 20 Oct 2026.