Precision radiation and immunotherapy join forces against inoperable stomach cancer
NCT ID NCT07607119
First seen Jun 25, 2026 · Last updated Jun 27, 2026 · Updated 2 times
Summary
This study is testing a new way to give radiation therapy (called PULSAR) along with standard chemotherapy and immunotherapy for people with advanced stomach cancer that cannot be removed with surgery. The radiation is given in high doses every few weeks, tailored to each patient's tumor. The goal is to see if this combination can stop the cancer from growing for at least a year. The study plans to enroll 53 adults with a specific type of stomach cancer (HER2-negative, EBV-negative, and microsatellite stable).
What this could mean
Our plain-language read of the trial. This is informational only, not medical advice or a prediction.
- Active substance
- PULSAR (personalized radiation therapy) combined with immunotherapy and standard systemic therapy
- What this could lead to
- If successful, this could offer a new treatment option for people with advanced gastric cancer that cannot be removed by surgery, potentially delaying disease progression.
- What could go wrong
- This is a small, early-phase study (53 people) at a single center, so results may not apply broadly. The combination of radiation and immunotherapy may cause side effects, and it is not yet known if it will improve survival.
This is an AI summary of the original study and may miss details. Read our disclaimer.
Study facts
What this study's own registry entry says, in plain language.
- Phase
-
Not a phased trial
Phase numbers describe drug development. The registry uses this when they do not apply, as it does for trials of devices, procedures or behaviour changes, and for observational studies.
- Participants
-
About 53 people
The number the study aims to enrol. It can still change while the study runs.
- Started
-
May 2026
- Expected to finish
-
Apr 2030
An estimate. End dates often move.
- Lead sponsor
-
Other sponsor
The registry's catch-all category, for sponsors it does not file as a company, a government agency, or a research network.
Who can take part
This study's own entry requirements. Only the study team can say for certain whether you qualify.
- Ages
-
19 years and older
- Sex
-
Anyone
- Healthy volunteers
-
Not accepted
This study is not open to healthy volunteers. The entry requirements below say who it is open to.
Show the full entry requirements Hide the full entry requirements
Copied word for word from the study's registry entry, so the wording is the study team's rather than ours.
Inclusion Criteria: Age 19 or more years. Eastern Cooperative Oncology Group (ECOG) Performance Status of 0-2. Histologically confirmed gastric adenocarcinoma. Tumor biomarker status: HER-2 negative, EBV negative, and Microsatellite Stable (MSS). Unresectable, locally advanced extent at initial staging (Para-aortic lymph node \[PALN\] and Supraclavicular lymph node \[SCN\] metastases are allowed). Has completed 3 or more cycles of first-line systemic therapy combined with immunotherapy without evidence of disease progression. Presence of at least one evaluable lesion according to RECIST v1.1 that is deemed safely irradiable by the investigator. Voluntary written informed consent provided by the subject. Exclusion Criteria: Pregnant or lactating women. Presence of brain metastases or leptomeningeal involvement. Prior history of radiation therapy to the intended target site. Severe uncontrolled comorbidities that, in the investigator's opinion, limit study participation or treatment compliance (e.g., uncontrolled infection, heart failure, arrhythmia, psychiatric illness). Inability or unwillingness to comply with the study protocol procedures. Any condition deemed inappropriate for study participation by the principal investigator or attending physician.
Get updates
Get notified about this study
Sign up to get updates when this study changes or when new studies for Gastric adenocarcinoma are added.
Genom att skicka in godkänner du våra Användarvillkor
Conditions
The condition(s) this trial relates to.
As listed by the trial registrant
The condition terms exactly as the trial's registrant entered them.
How to take part
Only the study team decides who joins. These are the ways to reach them.
-
The places running it
1 site. The list below names each one and where it is.
-
The official record
ClinicalTrials.gov lists the study team's own contact details, including names and phone numbers. We don't republish those.
-
A doctor treating you
A doctor who knows your case can contact a study site on your behalf, and can tell you whether this study is worth pursuing at all.
Contacts and locations
Locations
-
Samsung Medical Center
RECRUITINGSeoul, Select Province/State, 06351, South Korea
More trials for these conditions
Other studies related to the condition(s) this trial covers.
- One small incision vs several: robotic stomach cancer surgery put to the test
- Can PET scans reveal which stomach cancers will respond to immunotherapy?
- Robotic surgery vs standard approaches: does the platform change cancer outcomes?
- Can a direct hit to tumors make immunotherapy work better?
- Can a vaccine stop GI cancers from returning?
- Can a Chemo-Immunotherapy cocktail extend life in advanced stomach cancer?