NCT07869355

Brief Summary

Explore the effect of MedDiet vs. Usual Diet on circulating and breast tumor fatty acid profiles. The investigators aim to examine impact on tumor biology in newly diagnosed participants.

Trial Health

65
Monitor

Trial Health Score

Automated assessment based on enrollment pace, timeline, and geographic reach

Enrollment
30

participants targeted

Target at below P25 for not_applicable

Timeline
19mo left

Started Feb 2027

Status
not yet recruiting

Health score is calculated from publicly available data and should be used for screening purposes only.

Trial Relationships

Click on a node to explore related trials.

Study Timeline

Key milestones and dates

First Submitted

Initial submission to the registry

October 1, 2026

Completed
8 days until next milestone

First Posted

Study publicly available on registry

October 9, 2026

Completed
4 months until next milestone

Study Start

First participant enrolled

February 15, 2027

Expected
1.5 years until next milestone

Primary Completion

Last participant's last visit for primary outcome

September 1, 2028

Same day until next milestone

Study Completion

Last participant's last visit for all outcomes

September 1, 2028

Last Updated

October 9, 2026

Status Verified

October 1, 2026

Enrollment Period

1.5 years

First QC Date

October 1, 2026

Last Update Submit

October 6, 2026

Conditions

Outcome Measures

Primary Outcomes (8)

  • Aim 1a

    Fatty acid profile (chain length and degree of saturation) in blood.

    3 weeks

  • Aim 1b

    Lipid availability in blood, tumor tissue, and interstitial fluid.

    3 weeks

  • Aim 1c

    Fatty acid profile (chain length and degree of saturation) in breast tumor tissue,

    3 weeks

  • Aim 2a

    peripheral blood monocyte cells from the electronic health record.

    3 weeks

  • Aim 2b

    Tumor tissue will explore the effects on tumor proliferation (Ki67) cells.

    3 weeks

  • Aim 2c

    Tumor tissue will explore the effects on expression of NK cells.

    3 weeks

  • Aim 2d

    Tumor tissue will explore the effects on CD8 T cells(immunohistochemistry) cells.

    3 weeks

  • Aim 2e

    Tumor tissue will explore the effects on chylomicrons (Apo48 staining) cells.

    3 weeks

Secondary Outcomes (3)

  • Exploratory aim a

    3weeks

  • Exploratory aim b

    3weeks

  • Exploratory aim c

    3weeks

Study Arms (2)

Med Diet

ACTIVE COMPARATOR

Mediterranean Diet (MedDiet) is a dietary pattern characterized by a low intake of saturated fats and a high intake of unsaturated fats, with olive oil as the primary culinary fat (7, 8).

Dietary Supplement: Explore the effect of MedDiet vs. Usual Diet on Fatty Acid ProfileDiagnostic Test: Explore the effect of MedDiet vs. Usual Diet on Breast Tumor TissueDiagnostic Test: Explore the effect of MedDiet vs. Usual Diet on LipidsDiagnostic Test: Explore the effect of MedDiet vs. Usual Diet on tumor tissue expression

Usual Diet

NO INTERVENTION

Dietary fat and cancer has been conducted in preclinical models of diet-induced obesity, where high-fat diets promote tumor growth

Interventions

Fatty acid profile (chain length and degree of saturation) in circulation of blood, tumor tissue, and tumor interstitial fluid.

Med Diet

Fatty acid profile (chain length and degree of saturation) in breast tumor tissue.

Med Diet

Lipid availability in blood, tumor tissue, and tumor interstitial fluid.

Med Diet

Tumor tissue will explore the effect of MedDiet vs. Usual Diet on tumor proliferation (Ki67) and expression of NK and CD8 T cells and chylomicrons (Apo48 staining).

Med Diet

Eligibility Criteria

Age18 Years - 80 Years
Sexfemale(Gender-based eligibility)
Gender Eligibility DetailsWomen with stage I-III luminal breast cancer.
Healthy VolunteersNo
Age GroupsAdult (18-64), Older Adult (65+)

You may qualify if:

  • Age ≥ 18 years;
  • Newly diagnosed stage I-III luminal breast cancer
  • Planned surgical resection at UI Health
  • Ability to speak, read, write, and understand English
  • A Mediterranean Eating Pattern for Americans (MEPA-III) score \<13 indicating that they do not currently follow a MedDiet;
  • ECOG performance status of 0 or 1.

You may not qualify if:

  • Currently following a MedDiet, vegan diet, or dietary restrictions (e.g., religious, food intolerance/allergy) that preclude adoption of a MedDiet;
  • Lack of access to a space to safely store and reheat foods items;
  • Living in facility that provides meals;
  • Chronic CKD stage 3+ or currently receiving dialysis treatment;
  • History of GI surgery involving removal of part of the stomach or intestines;
  • Type 1 or Type 2 diabetes;
  • Autoimmune or Inflammatory disease or immunocompromised; and
  • Cachexia.
  • We will not exclude other neoadjuvant treatments. Adults unable to consent Individuals who are not yet adults (infants, children, teenagers) Pregnant or breastfeeding women Prisoners

Contact the study team to confirm eligibility.

Sponsors & Collaborators

MeSH Terms

Conditions

Obesity

Condition Hierarchy (Ancestors)

OverweightOvernutritionNutrition DisordersNutritional and Metabolic DiseasesBody WeightSigns and SymptomsPathological Conditions, Signs and Symptoms

Study Design

Study Type
interventional
Phase
not applicable
Allocation
RANDOMIZED
Masking
NONE
Purpose
TREATMENT
Intervention Model
PARALLEL
Model Details: MedDiet vs. Usual Diet
Sponsor Type
OTHER
Responsible Party
PRINCIPAL INVESTIGATOR
PI Title
Principal Investigator

Study Record Dates

First Submitted

October 1, 2026

First Posted

October 9, 2026

Study Start (Estimated)

February 15, 2027

Primary Completion (Estimated)

September 1, 2028

Study Completion (Estimated)

September 1, 2028

Last Updated

October 9, 2026

Record last verified: 2026-10