ClinicalTrials.gg
CompletedNCT03468179NAPEUpdated Dec 13, 2019Results posted

Oatmeal Effect on N-acyl-phosphatidylethanolamines

An interventional study of Oatmeal in Obesity and Cardiovascular Diseases, sponsored by Vanderbilt University Medical Center. Completed at 1 site in United States. Open to participants aged 18 Years to 65 Years, including healthy volunteers. Per ClinicalTrials.gov, last updated 2019-12-13.

Sponsored by Vanderbilt University Medical Center · Not applicable, Interventional, and Basic science

Phase
Not applicable
Study type
Interventional
Enrollment
10
Allocation
Not applicable
Ages
18 Years to 65 Years
Sex
All
01

Where this study stands

Counted across the records on this site · 2026-11-12

Among 40 studies in Obesity by Vanderbilt University Medical Center — 7 open to participants now, 12 under way, 1 of them phase 3. Obesity · Vanderbilt University Medical Center.

Enrollment
27th of 33
10 · median 29
Started
2018
with 3 others
No phase
9 of 40
2 open now
Registered
22nd of 40
by date

Among the 40 studies in Obesity by Vanderbilt University Medical Center, this one is the 27th largest by enrollment of the 33 interventional ones that give a count, is one of 4 that started in 2018, is one of 9 with no phase, and was the 22nd registered.

Obesity

11,522 studies on the registry are indexed under Obesity; 2,033 are open to participants now.

This study's enrollment of 10 is below the median of 67 across 9,006 interventional studies indexed under Obesity.

Browse Obesity studies →

Open to participants now

7 of the 40 studies in Obesity by Vanderbilt University Medical Center are open now, in 1 country. Each count lists the studies.

All 7 open studies →

Where they have run

Who these studies take

Of the 1,336 Obesity studies recruiting now, 377 (28%) set no upper age limit and 856 (64%) stop at 75 or younger; 168 take children under 18; 491 take healthy volunteers.

This study: 18 Years to 65 Years · all sexes · healthy volunteers too.

The full table on the hub →
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02

Study summary

N-acyl-phosphatidylethanolamine (NAPEs) and their active metabolites, N-acyl-ethanolamides (NAEs) are lipid satiety factors that are normally biosynthesized in the intestinal tract in response to food intake. Reduced levels of NAPEs and NAEs have been found in obese individuals, and increasing plasma NAPE and NAEs levels may be beneficial to obese individuals trying to lose weight or to keep off weight gain after losing weight. We have found that oatmeal has large amounts of NAPEs, and based on previous mouse studies, we hypothesize that a single dose of dietary oatmeal is sufficient to double plasma NAE from baseline, possibly inducing satiety and increasing basal metabolic rate. To test this hypothesis, we will feed volunteers a single weight-based serving of oatmeal while monitoring its effects on serum glucose, NAPE and NAE levels as well as on subjective satiety.

Read the detailed description

N-acyl-phosphatidylethanolamine (NAPEs) and their active metabolites, N-acyl-ethanolamides (NAEs) are lipid satiety factors that are normally biosynthesized in the intestinal tract in response to food intake. Reduced levels of NAPEs and NAEs have been found in obese individuals, so that increasing plasma NAPE and NAEs levels may be beneficial to obese individuals trying to lose weight or to keep off weight gain after losing weight. While NAPEs are endogenously synthesized by mammals in their intestinal tract, many other organisms, including plants, also biosynthesize NAPEs. Recent screening of a wide range of foods by our lab demonstrated that oatmeal (Regular Instant Oatmeal) had very large amounts of NAPEs (0.17 mg NAPE / g dry oatmeal), suggesting that consumption of oatmeal may be a straightforward mechanism for elevating plasma NAPE and NAE levels in obese individuals. Based on our previous mouse studies with synthetic NAPE and with bacteria biosynthesizing NAPE, we hypothesize that a dose of oatmeal sufficient to deliver 0.135 mg NAPE per kg body should be sufficient to double plasma NAE levels from baseline, thereby inducing satiety and increasing basal metabolic rate. For a 100 kg person, 80 grams of dry regular instant oatmeal (2 servings) provides this 0.135 mg / kg dose. (The dose of dry oatmeal per person = (body weight in kg / 100 kg)* 80 g dry oatmeal. Thus for 50 kg person, 40 g dry oatmeal (1 serving) provides the required dose.) This amount of dry oatmeal is converted to the test meal by adding sufficient water to overtop oatmeal by about 1 cm (or to consistency desired by volunteer) and then microwaving for \~3-4 minutes on high. In the initial testing, no additives such as butter, cream, or brown sugar should be used in preparation or serving oatmeal. Water can be consumed ad lib.

03

Conditions studied

  • Obesity
  • Cardiovascular Diseases

Keywords

  • Diet
  • N-acyl-phosphatidylethanolamine
  • N-acyl-ethanolamine
  • NAPE
  • NAE
  • Oatmeal
04

Who can participate

Ages eligible
18 Years to 65 Years
Sexes eligible
All
Accepts healthy volunteers
Yes

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.

Inclusion criteria

  • Adult
  • non-pregnant
  • normal (20-25)

Exclusion criteria

Exclusion Criteria:

  • Obese
  • underweight
  • diabetes mellitus
  • coronary artery disease
  • oatmeal allergies
  • hyper/hypocoagulability
  • food intolerances
  • Irritable bowel syndrome
  • Inflammatory bowel disease
  • Celiac disease
  • pregnancy
Terms in these criteria, in plain language(1)

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.

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.

05

Study design

Phase
Not applicable
Primary purpose
Basic science
Allocation
Not applicable
Intervention model
Single group
Masking
None (open label)
Enrollment
10 participants (actual)

Study arms

  • Experimental
    Oatmeal

    Subjects will arrive for study fasting. IV access will be obtained, and baseline blood drawn. They will be fed 80gm/100kg oatmeal, and blood levels will be drawn at 30, 60, 90, and 120 minutes.

    Dietary Supplement: Oatmeal

Interventions

  • Dietary supplementOatmeal

    Subjects will be fed a calculated serving of oatmeal.

06

What researchers measure

Primary outcomes

  1. Change in Serum N-acyl-phosphatidylethanolamine (NAPE)

    Change in serum NAPE from baseline to 120 minutes post-oatmeal challenge

    Time frame: Baseline to 120 minutes

Secondary outcomes

  1. Serum NAPE

    Serum NAPE Levels at 30, 60, and 90 minutes

    Time frame: 30, 60, and 90 minutes

  2. Serum N-acyl-ethanolamides (NAE)

    Serum NAE levels at baseline, 30, 60, 90 and 120 minutes

    Time frame: baseline 30, 60, 90 and 120 minutes

07

Results

Posted Dec 13, 2019
Limitations and caveats
Limitation of this study was that only 1 dose of oatmeal was used and the study group was relatively small.

Participant flow

Participant flow — Overall Study
MilestoneOatmeal
Started10
Completed10
Not completed0

Outcome measures

PrimaryChange in Serum N-acyl-phosphatidylethanolamine (NAPE)

Change in serum NAPE from baseline to 120 minutes post-oatmeal challenge

Time frame:
Baseline to 120 minutes
Reported as:
Mean · nmol/L
Change in Serum N-acyl-phosphatidylethanolamine (NAPE)
nmol/LOatmeal
Change in Serum N-acyl-phosphatidylethanolamine (NAPE)-4.02 ± 10.57
SecondarySerum NAPE

Serum NAPE Levels at 30, 60, and 90 minutes

Time frame:
30, 60, and 90 minutes
Reported as:
Mean · nmol/L
Serum NAPE
nmol/LOatmeal
30 minutes3.36 ± 7.38
60 minutes2.78 ± 4.17
90 minutes4.12 ± 7.71
SecondarySerum N-acyl-ethanolamides (NAE)

Serum NAE levels at baseline, 30, 60, 90 and 120 minutes

Time frame:
baseline 30, 60, 90 and 120 minutes
Reported as:
Mean · nmol/L
Serum N-acyl-ethanolamides (NAE)
nmol/LOatmeal
Baseline0.09 ± 0.02
30 minutes0.08 ± 0.012
60 minutes0.07 ± 0.013
90 minutes0.06 ± 0.010
120 minutes0.07 ± 0.009

Adverse events

Collected over Adverse event data was collected for each participant for 1 study day.. Non-serious events are listed at a 0% frequency threshold.

Adverse event summary by group
GroupDeathsSeriousOther
Oatmeal0/10 (0%)0/10 (0%)1/10 (10%)
Most frequent other events
Most frequent other events
EventOatmeal
light-headed / dizzinessInjury, poisoning and procedural complications1/10

Baseline characteristics

Age, Categorical
Age, Categorical(Participants)Oatmeal
<=18 years0
Between 18 and 65 years10
>=65 years0
Sex: Female, Male
Sex: Female, Male(Participants)Oatmeal
Female5
Male5
Race (NIH/OMB)
Race (NIH/OMB)(Participants)Oatmeal
American Indian or Alaska Native0
Asian1
Native Hawaiian or Other Pacific Islander0
Black or African American0
White9
More than one race0
Unknown or Not Reported0
Region of Enrollment
Region of Enrollment(participants)Oatmeal
United States10
08

Study locations

1 site
  • Vanderbilt University Medical Center
    Nashville, Tennessee 37232, United States
09

References and documents

Study documents

PDFs hosted by the registry, ClinicalTrials.gov.

Individual participant data

Plan to share: No

10

Timeline

Tracking since Sep 25, 2026
ElapsedEstimatedEstimated, not yet reachedSimilar studies: half by the dot; the band is the middle halfHalf of similar studies reached it by the dot; the band is the middle half, from a quarter to three quarters

Ran from Oct 2018 to primary completion in Dec 2018, 2 months.

Results were first posted in Dec 2019, 11 months after primary completion.

Of 3,680 non-industry interventional studies with no phase under Obesity, half reached primary completion within 23 months of starting (the median), counting those still running; a quarter within 10 and three quarters within 43. This study's 2 months is below that.

Counting every sponsor, half of 3,843 studies reached it within 22 months; a quarter within 10 and three quarters within 42.

How these figures are worked out, and which studies are left out of them.

Registered
Mar 9, 2018
First posted
Mar 16, 2018
StartActual
Oct 7, 2018
Primary completionActual
Dec 31, 2018
CompletionActual
Dec 31, 2018
Results first posted
Dec 13, 2019
Last update
Dec 13, 2019
What these dates mean
Start.
When the first participant enrolled; while estimated, when the study expects to open to recruitment.
Primary completion.
When the last participant was examined or treated to collect data for the study's main question, its primary outcome. A study that stopped early gives the date its data collection stopped.
Completion.
When the last participant's last visit took place, for every outcome, secondary ones and side effects included: the end of the study. Often later than primary completion, sometimes the same day.
Actual and Est.
Actual means the registry says the date has happened. Est. (estimated) is a date the sponsor plans or expects. It can still move, and the sponsor is expected to change it to actual once it has passed.
No changes since tracking began. The registry record was last updated on Dec 13, 2019, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
11

Registry details

Key details

Study ID
NCT03468179
Responsible party
Sean Davies (Associate Professor, Vanderbilt University Medical Center) — Principal investigator
First posted
Mar 16, 2018
Start date
Oct 7, 2018
Primary completion
Dec 31, 2018
Completion
Dec 31, 2018
Results posted
Dec 13, 2019
Last update
Dec 13, 2019

Study contacts

Sean Davies, PhD
principal investigator · Vanderbilt University Medical Center

Oversight

Data monitoring committee
No
FDA-regulated drug
No
FDA-regulated device
No
View the source record on ClinicalTrials.gov ↗

Not currently enrolling

This study is completed, as verified in Nov 2019. You cannot join it, but the record below documents what was studied.

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Studies of the drug tested here: Oatmeal

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