An Early Phase 1 interventional study of Aspirin and Placebo in Inflammatory Response, Inflammation and Sleep, sponsored by Beth Israel Deaconess Medical Center. Active, not recruiting at 1 site in United States. Open to participants aged 18 Years to 65 Years, including healthy volunteers. Per ClinicalTrials.gov, last updated 2026-10-26.
Sponsored by Beth Israel Deaconess Medical Center · Early Phase 1, Interventional, and Basic science
Goal of this project is to investigate whether increases in inflammation that result from common patterns of restricting sleep on week nights and catching up on sleep over the weekend are caused by disruption in the newly discovered inflammatory resolution pathways. These pathways are crucial in the active termination of the inflammatory response, and their disruption may contribute to ongoing unresolved inflammation, which has been observed not only during periods of sleep restriction, but also after recovery sleep has been obtained. If the hypothesis is true, it is possible that increasing the body's natural production of endogenous, inflammatory resolution mediators may provide a non-behavioral strategy to limit the inflammatory consequences in those undergoing periods of sleep restriction with intermittent recovery sleep.
Low-grade or unresolved inflammation is involved in the pathogenesis of many human diseases. Common sleep patterns of restricting sleep during the work week and "catching up" on sleep over the weekend lead to inflammatory upregulation that does not recover completely after the weekend.
The goal of this proposal is to investigate, for the first time, inflammatory resolution pathways. Inflammatory resolution mediators, such as resolvins, are derived from omega-3 free fatty acids and actively 'turn-off' inflammation. Based on preliminary data, the investigators hypothesize that common sleep restriction-recovery patterns disrupt inflammatory resolution pathways, making it difficult to return to inflammatory homeostasis. If true, pharmacologically increasing the body's natural production of endogenous inflammatory resolution mediators may provide a way to reduce the detrimental inflammatory consequences of common sleep restriction-recovery patterns.
The hypothesis will be tested using an experimental model that mimics common patterns of restricting sleep on weekdays and "catching up" on sleep on the weekend. The proposal will further utilize the unique ability of low-dose aspirin, which - like no other non-steroidal anti-inflammatory drug - is able to activate inflammatory resolution pathways. Healthy women and men between the ages of 18 to 65 years will be tested under three, 11-day in-hospital stays, during which participants will be exposed to control sleep or common patterns of sleep restriction-recovery. The three in-hospital stays will be combined with preemptive administration of low-dose aspirin or a placebo.
Targeting inflammatory resolution pathways could provide a novel, non-behavioral strategy to mitigate both inflammatory consequences and future disease risks in those undergoing periods of sleep restriction-recovery patterns - a behavior pattern that is unlikely to be eradicated in the near future, as changes in sleep are generally difficult to make and to maintain.
3,536 studies on the registry are indexed under Inflammation; 642 are open to participants now.
This study's planned enrollment of 66 is above the median of 50 across 2,577 interventional studies indexed under Inflammation.
Browse Inflammation studies →Beth Israel Deaconess Medical Center is the lead sponsor of 568 studies on the registry; 80 are open to participants now.
Of its 76 completed or terminated interventional studies of FDA-regulated products, 62 (82%) have results posted.
Counted across the registry records on this site, refreshed daily.
Go through the criteria one by one — yes, no or not sure — and take the list to your doctor or the study team. Kept in this browser only.
Exclusion Criteria:
Following blood chemistry values outside of the laboratory's normal range or the range specified below:
Underlined terms in the criteria open these too. Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.
Weight in kilograms divided by height in metres squared. Example: 70 kg and 1.75 m gives 70 ÷ (1.75 × 1.75) ≈ 22.9.
What counts as overweight or obesity differs between countries (some use lower cut-offs), so go by the range the study states.
Blood cells that help blood clot. Too few raises the risk of bleeding and bruising. A usual adult range is about 150–400 × 10⁹/L (150,000–400,000 per µL); each lab has its own reference range.
A yellow substance made when red blood cells are broken down, which the liver clears. A high level can mean a problem with the liver or the bile ducts.
Criteria often allow more for people with Gilbert’s syndrome, a harmless inherited condition that raises bilirubin.
The top of the normal range for a blood test, as set by the laboratory that runs it. Each lab prints its own range next to your result.
“≤ 2.5 × ULN” means the result can be up to two and a half times that top value.
Two enzymes measured in a routine blood test of the liver. Higher levels can mean the liver is under strain or damaged. SGPT and SGOT are older names for ALT and AST.
Criteria usually give a limit as a multiple of the upper limit of normal (ULN), often higher when cancer has spread to the liver.
A blood test of average blood sugar over the past two to three months, given as a percentage or in mmol/mol. 6.5% (48 mmol/mol) or more is the usual threshold for diabetes, normally confirmed by a second test.
Ways of preventing pregnancy. “Highly effective” methods fail less than 1% of the time a year when used correctly — for example an IUD or an implant.
Criteria usually say which methods count and how long to keep using them after the last dose, sometimes for male participants too. Some studies accept a partner’s vasectomy if it was confirmed successful and that person is the participant’s only sexual partner.
BMI (body mass index)
Weight in kilograms divided by height in metres squared. Example: 70 kg and 1.75 m gives 70 ÷ (1.75 × 1.75) ≈ 22.9.
What counts as overweight or obesity differs between countries (some use lower cut-offs), so go by the range the study states.
Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.
Platelets
Blood cells that help blood clot. Too few raises the risk of bleeding and bruising. A usual adult range is about 150–400 × 10⁹/L (150,000–400,000 per µL); each lab has its own reference range.
Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.
Bilirubin
A yellow substance made when red blood cells are broken down, which the liver clears. A high level can mean a problem with the liver or the bile ducts.
Criteria often allow more for people with Gilbert’s syndrome, a harmless inherited condition that raises bilirubin.
Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.
ULN (upper limit of normal)
The top of the normal range for a blood test, as set by the laboratory that runs it. Each lab prints its own range next to your result.
“≤ 2.5 × ULN” means the result can be up to two and a half times that top value.
Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.
ALT and AST (liver enzymes)
Two enzymes measured in a routine blood test of the liver. Higher levels can mean the liver is under strain or damaged. SGPT and SGOT are older names for ALT and AST.
Criteria usually give a limit as a multiple of the upper limit of normal (ULN), often higher when cancer has spread to the liver.
Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.
HbA1c
A blood test of average blood sugar over the past two to three months, given as a percentage or in mmol/mol. 6.5% (48 mmol/mol) or more is the usual threshold for diabetes, normally confirmed by a second test.
Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.
Contraception
Ways of preventing pregnancy. “Highly effective” methods fail less than 1% of the time a year when used correctly — for example an IUD or an implant.
Criteria usually say which methods count and how long to keep using them after the last dose, sometimes for male participants too. Some studies accept a partner’s vasectomy if it was confirmed successful and that person is the participant’s only sexual partner.
Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.
Daily intake of pill at bedtime over 2-week period prior to and during the 11-day in-hospital stay
Drug: Aspirin · Drug: Placebo
Daily intake of pill at bedtime over 2-week period prior to and during the 11-day in-hospital stay
Drug: Aspirin
Daily intake of pill at bedtime over 2-week period prior to and during the 11-day in-hospital stay
Drug: Placebo
81mg aspirin pill daily at bedtime over a 25 day period
Also known as: Non-steroidal anti-inflammatory drug
81mg non-active pill that looks like aspirin
Inflammatory Resolution Markers
Resolvins
Time frame: Change from baseline to sleep restriction, single measure in the morning
Inflammatory Markers
Interleukin-6
Time frame: Change from baseline to sleep restriction, single measure in the morning
Ran from Jun 2018 to primary completion in Dec 2025, 90 months.
Of 63 non-industry phase 1 interventional studies under Inflammation, half reached primary completion within 28 months of starting (the median), counting those still running; a quarter within 17 and three quarters within 56. This study's 90 months is above that.
Counting every sponsor, half of 82 studies reached it within 21 months; a quarter within 10 and three quarters within 51.
Completion moved once since we started tracking on Sep 25, 2026: Dec 2025 → Jun 2027, on Oct 26, 2026.
Earlier changes are on the record history on ClinicalTrials.gov ↗
How these figures are worked out, and which studies are left out of them.
From the registry record's own update history. This site started tracking changes on Sep 25, 2026; for anything earlier, see the record history on ClinicalTrials.gov ↗
This study is active, not recruiting, as verified in Oct 2026. You cannot join it, but the record below documents what was studied.
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Studies of the drug tested here: Aspirin
Beth Israel Deaconess Medical Center →