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Scientists investigate Histidine's role in boosting immunotherapy for colorectal cancer

NCT ID NCT07586293

Knowledge-focused Sponsor: Jing-yuan Fang, MD, Ph. D Source: ClinicalTrials.gov ↗

What the study statuses mean

This study's is highlighted.

Recruitment status, easiest to join first

Recruiting now
This trial is taking on new participants right now.
Not yet recruiting This study
Registered, but not yet taking participants.
By invitation only
Not open to general applications. Only people the study team invites can take part.
Paused
Paused for now. It may or may not start again.
Ongoing
Running, but no longer taking on new participants.
Completed
The trial has finished. Results may not be published yet.
Stopped early
Stopped early, before it reached the end. That can be for many reasons, including safety.
Cancelled
Cancelled before anyone took part.

Expanded access (not trials)

Expanded access
Not a trial. This treatment can be requested outside a study, case by case, for people who qualify.
Expanded access (paused)
Not a trial. The treatment can normally be requested outside a study, but is unavailable right now.
Expanded access (ended)
Not a trial. The treatment could once be requested outside a study, but no longer can.
Approved
The treatment has been approved, so it is available normally rather than through this programme.

When the status isn't known

Details not published
The full record has not been published yet, so there is little to show here.
Status unknown
This status has not been confirmed recently, so it may be out of date.

First seen Jun 25, 2026 · Last updated Jun 27, 2026 · Updated 1 time

Summary

This observational study looks at how histidine, a common amino acid, and its transporter SLC15A3 influence colorectal cancer's sensitivity to immunotherapy. Researchers will analyze tumor tissue and blood samples from 150 patients to understand why some cancers resist treatment. The goal is to find new targets that could improve immunotherapy effectiveness.

What this could mean

Our plain-language read of the trial. This is informational only, not medical advice or a prediction.

What this could lead to
If successful, this study could point toward new ways to make colorectal cancer more responsive to immunotherapy.
What could go wrong
This is an observational study, not a treatment trial, so it won't directly test any new therapy. Results may not lead to immediate clinical changes.

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.

Participants

About 150 people

The number the study aims to enrol. It can still change while the study runs.

Expected to start

May 2026

An estimate. Start dates often move.

Expected to finish

Jun 2027

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.

Who is studied

Patients with pathologically confirmed colorectal cancer who received care at the Department of Gastroenterology, Department of Oncology, or Department of General Surgery at Renji Hospital, Shanghai Jiao Tong University School of Medicine.

Ages

18 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

Copied word for word from the study's registry entry, so the wording is the study team's rather than ours.

Inclusion Criteria: 1. Participants aged ≥18 years and ≤100 years. 2. Patients pathologically diagnosed with colorectal cancer based on colonoscopy or surgical specimens and biopsy examination; or patients who previously received PD-1 monoclonal antibody immunotherapy for colorectal cancer. Exclusion Criteria: 1. Age \<18 years. 2. Presence of poorly controlled metabolic diseases, including hypertension, diabetes mellitus, hyperlipidemia, hyperuricemia, or hyperthyroidism. 3. Presence of other severe gastrointestinal diseases, including inflammatory bowel disease, ischemic bowel disease, familial adenomatous polyposis, liver cirrhosis, MUTYH-associated polyposis (MAP), Lynch syndrome (LS), or Peutz-Jeghers syndrome (PJS). 4. History of other malignant tumors, or pathological diagnosis of colorectal inflammatory polyps, hyperplastic polyps, neuroendocrine tumors, neuroendocrine carcinoma, or mixed neuroendocrine-non-neuroendocrine neoplasms. 5. History of neurological or psychiatric disorders, such as epilepsy or depression. 6. Unqualified specimens, including hemolyzed serum samples or tissue samples that were not properly preserved in time.

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Conditions

The condition(s) this trial relates to.

colorectal cancer colorectal neoplasm

As listed by the trial registrant

The condition terms exactly as the trial's registrant entered them.

Colorectal cancer

How to take part

Only the study team decides who joins. These are the ways to reach them.

  1. The official record

    ClinicalTrials.gov lists the study team's own contact details, including names and phone numbers. We don't republish those.

    Open the record ↗

  2. 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.

More trials for these conditions

Other studies related to the condition(s) this trial covers.