Clinical trial Recruiting at 1 site Interventional Ages 18 to 100

Using a special medical food with standard treatment for advanced rectal cancer

Official title: Prospective, Single Arm IIA Study to Evaluate the Feasibility of a Standardized Nonessential Amino Acid Restriction (NEAAR) Medical Food in Combination With Total Neoadjuvant Therapy (TNT) for Management of Locally Advanced Rectal Cancer (LARC) NEAAR-LARC

Run by University of South Florida · NCT06380101 · Data updated 2026-11-12

This study is testing a special medical food to see if it helps adults with advanced rectal cancer stick to their treatment plan while they receive standard radiation and chemotherapy.

More Rectal Cancer trials

Quick facts

Study typeInterventional
Ages18 Years to 100 Years
SexAll
Enrollment30 (estimated)
SponsorUniversity of South Florida
Academic / other
Drugs / interventionschemotherapy, radiation
Locations1 site (Tampa, Florida)
StatusRecruiting
StartedSeptember 8, 2023
Main results expectedDecember 2026
Study endsJune 2027
Registry record updatedDecember 10, 2025
Trial IDNCT06380101 on ClinicalTrials.gov

Is this trial a fit for you?

Likely a good fit

Ideal candidates are adults aged 18 and older with histologically confirmed adenocarcinoma of the rectum at clinical stage II or III, who are eligible for total mesorectal excision.

Probably not a fit

Patients with serious cachexia, those requiring high protein intake, or those with certain metabolic conditions may not benefit from this study.

A plain-English reading of the study's rules. Only the study team can confirm whether you qualify.

What this trial studies

This clinical study evaluates the feasibility, safety, tolerability, and compliance of a Nonessential Amino Acid Restriction (NEAAR) medical food in adult patients diagnosed with locally advanced rectal cancer. Participants will receive this medical food alongside standard short-course radiotherapy followed by chemotherapy. The study aims to determine how well patients can adhere to this dietary intervention while undergoing conventional cancer treatments.

Why it matters

Potential benefit: If successful, this approach could enhance treatment outcomes for patients with locally advanced rectal cancer by improving their nutritional status and treatment tolerance.

How similar studies have gone: While the specific approach of NEAAR medical food is novel, similar dietary interventions in cancer treatment have shown promising results in other studies.

Who can join: the full rules

Show full inclusion / exclusion criteria
Inclusion Criteria:

* Histologically confirmed diagnosis of adenocarcinoma of the rectum
* Clinical stage II (cT3-4, N-) or Stage III (cT any, N+) based on MRI
* Eligible for total mesorectal excision
* No evidence of distant metastasis
* No prior pelvic radiation therapy
* No prior chemotherapy
* Age ≥18 years

Exclusion Criteria:

* Patients unable to undergo MRI
* Other anticancer or experimental therapy
* Body mass index (BMI) \<18.5 kg/m2 or \>40 kg/m2
* Serious or refractive cachexia or anorexia
* Insulin-dependent diabetes Taking or needs to take any protein or amino acid containing nutritional supplements (e.g., Ensure®) Patients with a condition where high-fat or fatty food is contraindicated History of confirmed food allergy Active wound or skin graft that would require a significant increase in protein requirements for skin integrity and healing

Where it's running

  • University of South Florida
    Tampa, Florida, United States
    Recruiting

Study contacts

  • Principal investigator: Richard R Tuli, MD — University of South Florida
  • Study coordinator: Richard R Tuli, MD
  • Email: rtuli@usf.edu
  • Phone: 813 844 7585

Similar studies

Other studies for the same condition or treatment. Recruiting studies are listed first.

How to take part

  1. Review the eligibility criteria above with your treating physician.
  2. Check the official listing on ClinicalTrials.gov for the latest contact details and recruitment status.
  3. Contact the study coordinator or principal investigator to ask for pre-screening. Pre-screening is free and never obligates you to enroll.
Last reviewed 2026-11-14 by the Find a Trial editorial team. Information on this page is for educational purposes and is not medical advice. Always consult qualified healthcare professionals about clinical trial participation.