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Recruiting NCT05987631

NCT05987631 Predictors of Weight Loss and Metabolic Health After Bariatric Surgery

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Clinical Trial Summary
NCT ID NCT05987631
Status Recruiting
Phase
Sponsor Academisch Medisch Centrum - Universiteit van Amsterdam (AMC-UvA)
Condition Obesity, Morbid
Study Type OBSERVATIONAL
Enrollment 1,200 participants
Start Date 2023-01-19
Primary Completion 2024-08-31

Eligibility & Interventions

Sex All sexes
Min Age 18 Years
Max Age 75 Years
Study Type OBSERVATIONAL

Eligibility Fast-Check

Enter your details for a quick preliminary check. This does not replace medical advice.

What to Expect as a Participant

This is an observational study. You will not receive an experimental treatment; researchers will collect data based on your existing condition or standard treatment.

This trial targets 1,200 participants in total. It began in 2023-01-19 with a primary completion date of 2024-08-31.

⚠ This information is for research awareness only. Always consult your physician before joining any clinical trial. Participation is voluntary and you may withdraw at any time.

Brief Summary

In this prospective study the investigators aim to identify preoperative predictors of improvement of metabolic health and weight loss after bariatric surgery focusing on inflammation, insulin sensitivity (in a subgroup of patients), glucoregulatory determinants, psychological traits, feeding behavior characteristics and cardiorespiratory fitness

Eligibility Criteria

Inclusion Criteria: * Ability to provide informed consent * Patient is ≥ 18 and ≤ 75 years old * BMI ≥ 40 kg/m2 or ≥ 35 kg/m2 with obesity related comorbidity * Scheduled for primary bariatric procedure: Roux-en-Y gastric bypass (RYGB) or Sleeve Gastrectomy (SG) * Stable weight 3 months prior to inclusion weight (\<10% change in body weight for 3 months prior to assessments) In order to be eligible to participate in the subgroup of this study, we will use the following inclusion criteria: * Ability to provide informed consent * Patient is ≥ 18 and ≤ 75 years old * BMI ≥ 40 kg/m2 or ≥ 35 kg/m2 with obesity related comorbidity * Patients scheduled for RYGB * Patients who are insulin resistant (impaired fasting glucose (\> 5.6 mmol/L) or fasting insulin \> 74 pmol/L) * Postmenopausal women (to prevent bias due to the effect of sex hormones on insulin sensitivity) Exclusion Criteria: * Any actual medical condition except for obesity related health issues or well treated hypothyroidism * Pregnancy anticipated in the first two years following surgery A potential subject who meet the following criteria will be excluded from participation in the subgroup of this study: * Coagulation disorders and/or use anticoagulants * Use of any medication except for statins, antihypertensives (except for Angiotensine converting enzyme (ACE)- or angiotensin receptor blockers) and thyroid hormone * Diabetes mellitus type 2

Contact & Investigator

Central Contact

Rieneke van der Meer, Drs.

✉ r.vandermeer1@amsterdamumc.nl

📞 +31703204703

Principal Investigator

Mireille JM Serlie, Prof. Dr.

PRINCIPAL INVESTIGATOR

Academisch Medisch Centrum - Universiteit van Amsterdam (AMC-UvA)

Frequently Asked Questions

Who can join the NCT05987631 clinical trial?

This trial is open to participants of all sexes, aged 18 Years or older, up to 75 Years, studying Obesity, Morbid. Full inclusion and exclusion criteria are listed in the Eligibility Criteria section. Always confirm your eligibility with the research team before applying.

Is NCT05987631 currently recruiting?

Yes, NCT05987631 is actively recruiting participants. Contact the research team at r.vandermeer1@amsterdamumc.nl for enrollment information.

Where is the NCT05987631 trial being conducted?

This trial is being conducted at Gouda, Netherlands, The Hague, Netherlands, Nieuwegein, Netherlands.

Who is sponsoring the NCT05987631 clinical trial?

NCT05987631 is sponsored by Academisch Medisch Centrum - Universiteit van Amsterdam (AMC-UvA). The principal investigator is Mireille JM Serlie, Prof. Dr. at Academisch Medisch Centrum - Universiteit van Amsterdam (AMC-UvA). The trial plans to enroll 1,200 participants.

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ClinicalMetric — Independent clinical trial intelligence platform. Not affiliated with NIH, ClinicalTrials.gov, the U.S. FDA, or any pharmaceutical company, hospital, or clinical research organization. Trial data is sourced from ClinicalTrials.gov for informational purposes only and does not constitute medical advice. Do not make any treatment, enrollment, or health decisions based solely on information found here — always consult a qualified healthcare professional. Full Disclaimer  ·  Last Reviewed: April 2026  ·  Data Methodology