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.
Quick facts
| Study type | Interventional |
|---|---|
| Ages | 18 Years to 100 Years |
| Sex | All |
| Enrollment | 30 (estimated) |
| Sponsor | University of South Florida Academic / other |
| Drugs / interventions | chemotherapy, radiation |
| Locations | 1 site (Tampa, Florida) |
| Status | Recruiting |
| Started | September 8, 2023 |
| Main results expected | December 2026 |
| Study ends | June 2027 |
| Registry record updated | December 10, 2025 |
| Trial ID | NCT06380101 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
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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.
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This registry collects real-world data on how locally advanced rectal cancer is treated in Austria, to see how TNT and dMMR/MSI-H cases are managed and what outcomes occur.
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Aerobic exercise and guided imagery for bowel problems after rectal cancer surgery
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Active surveillance vs chemoradiotherapy after local removal of intermediate-risk T1 rectal cancer
This study tests whether close follow-up alone after local removal of early rectal cancer can match the cancer control of adding chemoradiotherapy, while reducing treatment-related side effects.
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Different-Dose Short-Course Radiotherapy With CAPOX, PD-1 Blockade, and IL-2 in Locally Advanced Rectal Cancer
This phase II trial tests whether a low-dose short-course radiotherapy combined with CAPOX, a PD-1 blocker, and IL-2 works as well as the standard-dose short-course approach in patients with locally advanced rectal cancer.
How to take part
- Review the eligibility criteria above with your treating physician.
- Check the official listing on ClinicalTrials.gov for the latest contact details and recruitment status.
- Contact the study coordinator or principal investigator to ask for pre-screening. Pre-screening is free and never obligates you to enroll.