CompletedNot Applicable

Shift Work, Heredity, Insulin, and Food Timing Study

United States365 participantsStarted 2017-02-24

Plain-language summary

The purpose of this study is to determine whether night time eating that coincides with elevated endogenous melatonin impairs glucose tolerance, particularly in carriers of the MTNR1B risk allele.

Who can participate

Age range

18 Years – 60 Years

Sex

ALL

See this in plain English?

AI-rewrites the medical criteria so a patient or caregiver can understand them. Always confirm with the trial site.

Inclusion Criteria: * Male or non-pregnant female * 18-60 years * Currently employed (night shift workers and day workers), graduate students, part-time workers, or unemployed * Able and willing to give consent relevant to genetic investigation Exclusion Criteria: * Currently taking any medications for the treatment of diabetes * Currently taking medications known to affect glycemic parameters, such as glucocorticoids, growth hormone or fluoroquinolones * Pregnant, nursing or at risk of becoming pregnant * Chronic renal failure, hepatic diseases, or cancer diagnoses * Bulimia diagnosis, prone to binge eating * Eating disorder diagnosis such as anorexia, binge eating, or bulimia * With psychiatric illness, such as schizophrenia or bipolar affective disorder * Blind * History of bariatric surgery

Questions worth asking your doctor

Bring these to your next appointment. They're a starting point for a shared conversation — not a sign you qualify or a recommendation to enrol.

1Based on my diagnosis and history, is this trial worth exploring for me — or is there a standard treatment we should try first?
2What does this trial's phase tell us about how much is already known about its safety and benefit?
3What would taking part actually involve for me — visits, tests, time, and travel?
4What are the known and possible risks or side effects I should weigh, and how would they be monitored?
5If this trial isn't the right fit, what other options or trials would you suggest I look into?

Generated to help you prepare — always confirm anything about your own eligibility and care with the study team and your doctor.

Questions for the trial coordinator

The trial coordinator is the person who runs the study day to day. These cover the practical side — logistics, costs, and what taking part would actually mean for your life. The study team confirms whether you meet the criteria; these are questions to ask, not a sign you qualify.

1What does taking part actually involve week to week — how many visits, where, and how long does each one take?
2What costs are covered by the study, and what might I have to pay for myself, including travel, parking, or time off work?
3What happens during screening, and what happens if the study team confirms I don't meet the criteria after those tests?
4Who pays for the scans, blood work, and other tests the trial requires — the study, my insurance, or me?
5How will being in the trial affect my regular care, and will my own doctor stay informed and involved?
6Can I leave the trial at any point if I change my mind, and what would happen to my care if I do?

A starting point for the conversation — always confirm anything about your own eligibility, costs, and care with the study team and your doctor.

What they're measuring

Area Under the Curve (AUC) glucose

Timeframe: Between 0-120 minutes, Visit 2 and 3

Disposition index

Timeframe: Between 0-120 minutes, Visit 2 and 3

Trial details

NCT IDNCT02997319

SponsorMassachusetts General Hospital

Sponsor typeOTHER

Study typeOBSERVATIONAL

Primary completion2021-05-08

View on ClinicalTrials.gov More Shift Work Type Circadian Rhythm Sleep Disorder trials

Who can participate

Age range

18 Years – 60 Years

Sex

ALL

See this in plain English?

AI-rewrites the medical criteria so a patient or caregiver can understand them. Always confirm with the trial site.