NCT03519906

Brief Summary

Changes to gastric pH, gastric emptying time, gastrointestinal transit-time or the pre-systemic metabolizing effect of enzymes secreted in the mucosa may all alter the pharmacokinetics of medicines. These factors are potentially influenced by bariatric surgery. Little is so far known about how gastric bypass and sleeve gastrectomy impacts the biological availability of medication. In this study the pharmacokinetic effects of bariatric surgery on metoprolol are investigated.

Trial Health

77
On Track

Trial Health Score

Automated assessment based on enrollment pace, timeline, and geographic reach

Enrollment
12

participants targeted

Target at below P25 for all trials

Timeline
5mo left

Started Nov 2016

Longer than P75 for all trials

Geographic Reach
1 country

1 active site

Status
recruiting

Health score is calculated from publicly available data and should be used for screening purposes only.

Trial Relationships

Click on a node to explore related trials.

Study Timeline

Key milestones and dates

Study Progress96%
Nov 2016Oct 2026

Study Start

First participant enrolled

November 2, 2016

Completed
1.5 years until next milestone

First Submitted

Initial submission to the registry

May 8, 2018

Completed
1 day until next milestone

First Posted

Study publicly available on registry

May 9, 2018

Completed
8.4 years until next milestone

Primary Completion

Last participant's last visit for primary outcome

October 1, 2026

Expected
Same day until next milestone

Study Completion

Last participant's last visit for all outcomes

October 1, 2026

Last Updated

June 6, 2025

Status Verified

June 1, 2025

Enrollment Period

9.9 years

First QC Date

May 8, 2018

Last Update Submit

June 5, 2025

Conditions

Obesity, Morbid

Keywords

Bariatric surgeryGastrointestinal tractBiological availabilityPharmacokineticsMetoprolol

Outcome Measures

Primary Outcomes (1)

  • Metaprolol concentration in blood serum (area under curve (AUC))

    From baseline to 1 year postoperatively

Interventions

MetoprololDRUG

Patients are tested for their normal prescription metaprolol medication

Also known as: Betaloc, Lopressor, Spesicor, Toprol

Eligibility Criteria

Age18 Years - 70 Years
Sexall
Healthy VolunteersNo
Age GroupsAdult (18-64), Older Adult (65+)
Sampling MethodNon-Probability Sample
Study Population

Patients referred for bariatric surgery (gastric bypass or sleeve gastrectomy)

You may qualify if:

  • Preparing to undergo gastric bypass or sleeve gastrectomy in Central Norway
  • Being a Norwegian citizen

You may not qualify if:

  • Having previously undergone resections in the GI-tract

Contact the study team to confirm eligibility.

Sponsors & Collaborators

Study Sites (1)

St. Olavs University Hospital

Trondheim, Norway

RECRUITING

Biospecimen

Retention: SAMPLES WITH DNA

Blood

MeSH Terms

Conditions

Obesity, Morbid

Interventions

Metoprolol

Condition Hierarchy (Ancestors)

ObesityOverweightOvernutritionNutrition DisordersNutritional and Metabolic DiseasesBody WeightSigns and SymptomsPathological Conditions, Signs and Symptoms

Intervention Hierarchy (Ancestors)

PhenoxypropanolaminesPropanolaminesAmino AlcoholsAlcoholsOrganic ChemicalsPropanolsAmines

Study Officials

  • Magnus Strømmen, MSc

    St. Olavs University Hospital

    PRINCIPAL INVESTIGATOR

Central Study Contacts

Magnus Strømmen, MSc

CONTACT

0047 72829970magnus.strommen@stolav.no

Study Design

Study Type
observational
Observational Model
CASE ONLY
Time Perspective
PROSPECTIVE
Sponsor Type
OTHER
Responsible Party
SPONSOR

Study Record Dates

First Submitted

May 8, 2018

First Posted

May 9, 2018

Study Start

November 2, 2016

Primary Completion (Estimated)

October 1, 2026

Study Completion (Estimated)

October 1, 2026

Last Updated

June 6, 2025

Record last verified: 2025-06

Locations

NO(1)