Time Restricted Eating for HER2-Negative Breast Cancer

This study is looking at whether a special eating plan called Time Restricted Eating (TRE), also known as intermittent fasting, can be helpful for people with HER2-negative breast cancer (a type of breast cancer that doesn't have too much of a protein called HER2) who are starting chemotherapy before surgery (neoadjuvant chemotherapy). You would follow a 16:8 schedule, meaning you fast for 16 hours and eat during an 8-hour window each day, for 16 weeks. The main goal is to see how many people can stick to this eating plan at least 70% of the time while on chemotherapy. This study is for adults aged 18 or older with stage I-III breast cancer and a BMI between 25 and 40.

Study design
This is an interventional study, meaning participants will receive a specific intervention (Time Restricted Eating). It plans to enroll 55 participants.
What's involved
Participants will follow a 16:8 Time Restricted Eating schedule for 16 weeks while receiving neoadjuvant chemotherapy. There will be check-ins to help with adherence.
Compensation
Not stated in the trial record.
Follow-up
The primary endpoint, adherence to Time Restricted Eating, is measured while undergoing neoadjuvant chemotherapy.

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NCT05327608

Neoadjuvant Breast Cancer Time Restricted Eating

Recruiting
PHASE2Ages 18+InterventionalSupportive care
Thomas Jefferson University
~55 participants
Updated 2026-08-11 on ClinicalTrials.gov
What's tested:Time Restricted Eating

At a glance

Recruiting sites
1 of 1 listed site is recruiting right now
RecruitingSuspended, closed, or not yet open
What they're measuring
1. Proportion of patients who can adhere to time restricted eating (TRE) >= 70% of days
Measured over While undergoing neoadjuvant chemotherapy
Anatomic Stage I Breast Cancer AJCC v8
Anatomic Stage II Breast Cancer AJCC v8
Anatomic Stage III Breast Cancer AJCC v8
Breast Ductal Carcinoma in Situ
HER2 Negative Breast Carcinoma
Hormone Receptor Positive Breast Carcinoma
Invasive Breast Carcinoma
1 sites across 1 states
Pennsylvania1
  • Maysa Abu-Khalaf, MD, MBA · PRINCIPAL_INVESTIGATOR · Sidney Kimmel Comprehensive Cancer Center at Thomas Jefferson University

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  • 1. Proportion of patients who can adhere to time restricted eating (TRE) >= 70% of daysWhile undergoing neoadjuvant chemotherapy

    A patient's adherence will be measured as the percent (%) of days where a patient reports on the survey that they were able to complete at least 14 or more hours of fasting per 24 hours (each day) during 16 weeks (112 days) of neoadjuvant chemotherapy. A patient will be considered adherent to TRE if percent (%) of days where a patient reports on the survey that they were able to complete at least 14 or more hours of fasting per 24 hours (each day) during 16 weeks is 70% or higher. For patients who complete \< 16 weeks of chemotherapy from the date of starting TRE, adherence will be computed based on number of days of chemotherapy cycles received. If the proportion of days with confirmed TRE adherence is 70% or greater, then the patient is considered to have achieved overall TRE adherence.