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CompletedNCT03006016OmegobeseUpdated Feb 21, 2022

Preoperative Omega-3 Polyunsaturated Fatty Acids in Morbidly Obese to Reduce Liver Volume and Steatosis

An interventional study of Omega-3 Fatty Acid and Placebo in Morbid Obesity D009765, sponsored by Centre Hospitalier Universitaire de Nice. Completed at 2 sites in France. Open to participants aged 18 Years to 60 Years. Per ClinicalTrials.gov, last updated 2022-02-21.

Sponsored by Centre Hospitalier Universitaire de Nice · Not applicable, Interventional, and Prevention

Phase
Not applicable
Study type
Interventional
Enrollment
44
Allocation
Randomized
Ages
18 Years to 60 Years
Sex
All
01

Study summary

Hepatomegaly is common in the morbidly obese patients and it may hamper the access to the hiatal region during bariatric surgery. The doctors made a preliminary prospective study that showed that a preoperative 4-week course of 1.500 Mg/ day without caloric restriction resulted in a 20 % reduction in the volume of the left liver lobe (segment 2 and 3) on ultrasounds.

The aim of this study is to determine whether a 4-week preoperative course with omega-3 without caloric restriction (1650 mg of omega-3 / day for 4 weeks) may reduce liver volume and its fat content, rendering thus surgery easier.

The primary end point is the reduction of the volume of the left liver lobe as measured by magnetic resonance imaging.

Secondary end points are: the reduction of the whole liver volume, liver steatosis, liver injuries during surgery, and duration of surgery, the evolution of liver tests as well as the correlation between preoperative MRI data and intraoperative liver biopsy for the quantification of liver steatosis.

Study design: This is an interventional, prospective, multicentric, randomized, double blinded clinical trial. Morbidly obese patients with metabolic syndrome candidate to bariatric surgery fulfilling criteria for bariatric surgery as established by the Haute Autorité de Santé are elegible for the study. Number of subjects to be enrolled: 44 patients in 12 months.

Study time schedule: At the time of the enrollment visit two visits are scheduled, the first before the beginning of the study and the last at the end. Surgery is scheduled no more than 7 days after the end of the treatment. At time of these two visits a clinical examination is performed avec calculation of the BMI, blood tests (ASAT, ALAT; GGT, total, HDL and LDL cholesterol, triglycerides, glycemia, C-peptide, HbA1c, insulin, HOMA-IR, C reactive protein) and a MRI to evaluate the volume and the fat content of the liver. At time of surgery duration of surgery and any eventual liver injury are recorded and a liver biopsy is performed.

The hypothesis is that, as shown by the preliminary study, the omega-3, will result in a reduction in the volume of the left liver lobe of 20 %.

Conclusion: If a 4-week preoperative course of omega-3 without caloric restriction results in a significant reduction of liver volume and steatosis before bariatric surgery, it may be recommended as a systematic preoperative treatment.

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Conditions studied

  • Morbid Obesity D009765

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03

In context

Obesity, Morbid

922 studies on the registry are indexed under Obesity, Morbid; 172 are open to participants now.

This study's enrollment of 44 is below the median of 60 across 590 interventional studies indexed under Obesity, Morbid.

Browse Obesity, Morbid studies →

Lead sponsor

Centre Hospitalier Universitaire de Nice is the lead sponsor of 709 studies on the registry; 176 are open to participants now.

Counted across the registry records on this site, refreshed daily.

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Who can participate

Ages eligible
18 Years to 60 Years
Sexes eligible
All
Accepts healthy volunteers
No

Inclusion criteria

  • Age 18 - 60 years
  • Karnofsky Index de > 70
  • BMI > 35 kg/m2 associated with metabolic syndrome define by three or more of the following: waistline that measures at least 80 centimeters for european women and 94 centimeters for european men; High triglyceride level less than 1.5 g/l or specific medications; Reduced high-density lipoprotein (HDL) cholesterol less than 1.04 mmol/L in men or less than 1.3 mmol/L in women; Increased blood pressure 130/85 millimeters of mercury (mm Hg) or higher or specific medications; Elevated fasting blood sugar 100 mg/dL (5.6 mmol/L) or higher or specific médications.
  • Failure of previous medical treatment of morbid obesity well conducted by a multidisciplinary team for at least 6 months.
  • Multidisciplinary team agreement for bariatric surgery
  • Patients affiliated to the French Health Care System (Sécurité Sociale)
  • Patients having signed the informed consent

Exclusion criteria

Exclusion Criteria:

  • Contraindications to MRI (pace-maker, metallic foreign bodies, claustrophobia)
  • Psychiatric contraindications to bariatric surgery
  • Anesthesiology contraindications to surgery
  • Progressive malignancies
  • Chronic alcoholism (>30 gr/day)
  • Uncontrolled sepsis
  • History of liver disease
  • Renal failure (Cockroft \<30ml/min)
  • Long term treatment with steroids
  • Regular assumption of alimentary complements enriched with proteins and/or amino acids)
  • Pregnancy (pregnancy test will be done before surgery in fertile women)
  • History of bariatric surgery of supramesocolic surgery rendering the access to the hiatal region difficult.
  • Forseeable difficulies in completing follow-up
  • Patients under judicial protection
  • Patients unable to understand or put in practice medical prescription as omega-3 oral supplementation.
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Study design

Phase
Not applicable
Primary purpose
Prevention
Allocation
Randomized
Intervention model
Parallel assignment
Masking
Triple (Participant, Care provider, Investigator)
Enrollment
44 participants (actual)

Study arms

  • Experimental
    Omega 3

    The patient will take Omega 3 before intervention 4-week course of 1.500 Mg/ day without caloric restriction

    Drug: Omega-3 Fatty Acid

  • Placebo comparator
    Placebo

    The patient will take placebo before intervention 4-week course of 1.500 Mg/ day without caloric restriction

    Other: Placebo

Interventions

  • DrugOmega-3 Fatty Acid

    The enrollment in the study is proposed by an investigator (surgeon) in each centre at the time of a preoperative visit (V0). Randomization takes place the week before the visit with the investigating surgeon in charge of the patient (V1) when the bariatric procedure is scheduled: omega-3 group (1650 mg of omega-3 / day for 4 weeks without caloric restriction) or placebo group.

  • OtherPlacebo

    The enrollment in the study is proposed by an investigator (surgeon) in each centre at the time of a preoperative visit (V0). Randomization takes place the week before the visit with the investigating surgeon in charge of the patient (V1) when the bariatric procedure is scheduled: omega-3 group (1650 mg of omega-3 / day for 4 weeks without caloric restriction) or placebo group.

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What researchers measure

Primary outcomes

  1. The volume of the left liver lobe

    Reduction of the volume of the left liver lobe as measured by magnetic resonance imaging between the beginning of the study and its end (4 weeks)

    Time frame: 4 weeks

Secondary outcomes

  1. The whole liver volume

    Reduction of the whole liver volume (as measured on MRI)

    Time frame: 4 weeks

  2. The liver injuries

    liver injuries during surgery (surgeon report)

    Time frame: 4 weeks

Other outcomes

  1. the liver steatosis

    Reduction of the whole liver steatosis (as measured on MRI)

    Time frame: 4 weeks

07

Study locations

2 sites
  • CHU de Nice - Chirurgie Digestive- Hôpital Archet
    Nice, Alpes-maritimes 06200, France
  • CHU de Montpellier - Chirurgie digestive
    Montpellier, Languedoc - Roussillon 34000, France
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References and documents

Individual participant data

Plan to share: No

No publications or documents are linked to this record.

09

Updates

Tracking since Sep 25, 2026
No changes since tracking began. The registry record was last updated on Feb 21, 2022, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
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Registry details

Key details

Study ID
NCT03006016
Lead sponsor
Centre Hospitalier Universitaire de Nice
Responsible party
Sponsor
First posted
Dec 30, 2016
Start date
Apr 12, 2017
Primary completion
Mar 31, 2020
Completion
Aug 7, 2020
Last update
Feb 21, 2022

Study contacts

IANNELLI Antonio, PhD
principal investigator · Centre Hospitalier Universitaire de Nice

Oversight

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

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