Effect of Obesity on Proton Pump Inhibitors (LiverLabPPI)

May 8, 2026 updated by: Kate Kyler, MD, MSc, Children's Mercy Hospital Kansas City

Physiologic Determinants of PPI Disposition in Children

This longitudinal study tests the hypothesis that obesity affects drug pharmacology of acid suppression medications in children.

Study Overview

Status

Status

Indicates the current recruitment status or the expanded access status.
Completed

Conditions

Conditions

The disease, disorder, syndrome, illness, or injury that is being studied. On ClinicalTrials.gov, conditions may also include other health-related issues, such as lifespan, quality of life, and health risks.

Intervention / Treatment

Intervention / Treatment

A process or action that is the focus of a clinical study. Interventions include drugs, medical devices, procedures, vaccines, and other products that are either investigational or already available. Interventions can also include noninvasive approaches, such as education or modifying diet and exercise.

Detailed Description

The purpose of this research study is to see how the body breaks down certain medicines. Many medicines are broken down in the liver. The liver is an organ in the belly. A person's age, size, genetics (DNA), and the health of their liver decide how quickly the body breaks down medicines and how much medication a person needs to take. Everybody's liver has some fat in it, but the amount of fat is different from person to person. The purpose of this study is to see if the amount of fat in the liver affects how quickly acid suppression medications start and stop working and get removed from the body.

Study Type

Study Type

Describes the nature of a clinical study. Study types include interventional studies (also called clinical trials), observational studies (including patient registries), and expanded access.
Interventional

Enrollment (Actual)

Enrollment

The number of participants in a clinical study. The "anticipated" enrollment is the target number of participants that the researchers need for the study.
76

Phase

Phase

The stage of a clinical trial studying a drug or biological product, based on definitions developed by the U.S. Food and Drug Administration (FDA). The phase is based on the study's objective, the number of participants, and other characteristics. There are five phases: Early Phase 1 (formerly listed as Phase 0), Phase 1, Phase 2, Phase 3, and Phase 4. Not Applicable is used to describe trials without FDA-defined phases, including trials of devices or behavioral interventions.
  • Phase 4

Contacts and Locations

This section provides the contact details for those conducting the study, and information on where this study is being conducted.

Study Contact

Study Contact

The name and contact information for the person who can answer enrollment questions for a clinical study. Each location where the study is being conducted may also have a specific contact, who may be better able to answer those questions.

Study Contact Backup

  • Name: Simone Lax
  • Phone Number: (816) 394-7542
  • Email: snlax@cmh.edu

Study Locations

  • United States
    • Missouri
      • Kansas City, Missouri, United States, 64108
        • Children's Mercy Kansas City

Participation Criteria

Researchers look for people who fit a certain description, called eligibility criteria. Some examples of these criteria are a person's general health condition or prior treatments.

Eligibility Criteria

Eligibility Criteria

The key requirements that people who want to participate in a clinical study must meet or the characteristics they must have. Eligibility criteria consist of both inclusion criteria (which are required for a person to participate in the study) and exclusion criteria (which prevent a person from participating). Types of eligibility criteria include whether a study accepts healthy volunteers, has age or age group requirements, or is limited by sex.

Ages Eligible for Study

6 years to 21 years (Child, Adult)

Accepts Healthy Volunteers

Yes

Description

Inclusion Criteria:

  • 6-21 years of age

  • Obese and non-obese individuals

    • BMI ≥10th percentile for age (6-20 years of age)
    • BMI ≥18.5 (>20 years of age)
  • Otherwise healthy; or otherwise healthy with diagnosis of GERD, NAFLD, chronic abdominal pain or obesity, according to report of medical history and/or review of the medical record
  • Receiving or not receiving pantoprazole or lansoprazole for routine medical care
  • MRI Hoop Test Clearance

Exclusion Criteria:

  • Unable or unwilling to give written permission/assent/consent
  • For PO Study Drug: Any anatomic abnormality of the GI tract as defined by history, PE, or radiographic findings, including Bariatric surgery, Nissen fundoplication or equivalent surgery.
  • For IV Study Drug: Any anatomic abnormality of the GI tract as defined by history, PE, or radiographic findings, except Bariatric surgery, Nissen fundoplication or equivalent surgery.
  • For subjects undergoing weight management, treatment in the last 7 days with proton pump inhibitors omeprazole, esomeprazole, dexlansoprazole, or grapefruit juice.
  • For subjects not undergoing weight management, treatment in the last 7 days with medications known to clinically significantly inhibit (e.g., omeprazole, esomeprazole, fluoxetine, fluvoxamine, ketoconazole, ticlopidine, felbamate, trazodone, valproic acid, topiramate) or induce (e.g., phenobarbital, carbamazepine, phenytoin) CYP2C19; and those known at therapeutic doses to significantly inhibit (e.g., erythromycin, clarithromycin, grapefruit juice, verapamil, diltiazem, cimetidine, ketoconazole) or induce (e.g., oxcarbazepine, carbamazepine, phenytoin, phenobarbital, St. John's Wort, rifampin, rifapentine) or CYP3A4 activity in the last 7 days.
  • Unable to have blood drawn for the screening lab tests
  • Unable or unwilling to fast overnight prior to the study session
  • Unable to have blood drawn for the screening lab tests
  • If taking lansoprazole or pantoprazole for clinical purposes, unable or unwilling to abstain from that PPI for 3 days prior to PK visit when the PPI is not the same as the study drug for that PK visit
  • Metal in the body or any foreign bodies that precludes MRI sequencing
  • Claustrophobia
  • Exceeds 500lbs or 227 kg in Body Weight
  • Demonstrated adverse reaction to previous pantoprazole or PPI exposure
  • Impaired hepatic activity as determined by routine liver function testing and defined as values ≥ 5 times the age-specific upper limit of normal (ULN) for AST, ALT, total bilirubin >2.0mg/dl, alkaline phosphatase ≥ 5 times the age-specific ULN
  • Impaired renal function defined as creatinine ≥ 3 times the age-specific ULN
  • Females of child-bearing age who are pregnant or breast-feeding
  • Any known infection with hepatitis B, C, or human immunodeficiency virus (HIV)

Study Plan

This section provides details of the study plan, including how the study is designed and what the study is measuring.

How is the study designed?

Design Details

  • Primary Purpose: Treatment
  • Allocation: N/A
  • Interventional Model: Single Group Assignment
  • Masking: None (Open Label)

Arms and Interventions

Participant Group / Arm

Participant Group / Arm

A group or subgroup of participants in a clinical trial that receives a specific intervention/treatment, or no intervention, according to the trial's protocol.
Intervention / Treatment

Intervention / Treatment

A process or action that is the focus of a clinical study. Interventions include drugs, medical devices, procedures, vaccines, and other products that are either investigational or already available. Interventions can also include noninvasive approaches, such as education or modifying diet and exercise.
Experimental: Children enrolled to receive proton pump inhibitor
Evaluate the effect of liver fat on pharmacology of PPI's, and if applicable midazolam
Drug: Lansoprazole
single-dose administration. Administered to a subset of participants who agreed to receive this drug upon enrollment.
Drug: Pantoprazole
single-dose administration. Administered to a subset of participants who agreed to receive this drug upon enrollment.
Drug: Midazolam
single-dose administration. Administered to a subset of participants who agreed to receive this drug upon enrollment.

What is the study measuring?

Primary Outcome Measures

Primary Outcome Measures

In a clinical study's protocol, the planned outcome measure that is the most important for evaluating the effect of an intervention/treatment. Most clinical studies have one primary outcome measure, but some have more than one.
Outcome Measure
Measure Description
Time Frame
Plasma 1/2 Life (t1/2)
Time Frame: samples collected at 0.25, 0.5, 0.75, 1, 1.5, 2, 2.5, 3, 3.5, 4, 6, and 8 hours after ingestion of study PPI drug
plasma elimination 1/2 life (t1/2)
samples collected at 0.25, 0.5, 0.75, 1, 1.5, 2, 2.5, 3, 3.5, 4, 6, and 8 hours after ingestion of study PPI drug
Weight-adjusted Clearance
Time Frame: samples collected at 0.25, 0.5, 0.75, 1, 1.5, 2, 2.5, 3, 3.5, 4, 6, and 8 hours after ingestion of study PPI drug
Weight-adjusted Drug plasma clearance (CL/F)
samples collected at 0.25, 0.5, 0.75, 1, 1.5, 2, 2.5, 3, 3.5, 4, 6, and 8 hours after ingestion of study PPI drug
AUC
Time Frame: samples collected at 0.25, 0.5, 0.75, 1, 1.5, 2, 2.5, 3, 3.5, 4, 6, and 8 hours after ingestion of study PPI drug
Plasma Area Under the Curve
samples collected at 0.25, 0.5, 0.75, 1, 1.5, 2, 2.5, 3, 3.5, 4, 6, and 8 hours after ingestion of study PPI drug
Hepatic Fat Fraction
Time Frame: MRI obtained anytime within 30 days of PK visit
Hepatic Fat Fraction as measured by liver Magnetic Resonance Imaging-Proton Density Fat Fraction (MRI-PDFF)
MRI obtained anytime within 30 days of PK visit
Tmax
Time Frame: samples collected at 0.25, 0.5, 0.75, 1, 1.5, 2, 2.5, 3, 3.5, 4, 6, and 8 hours after ingestion of study PPI drug
Time to max plasma concentration
samples collected at 0.25, 0.5, 0.75, 1, 1.5, 2, 2.5, 3, 3.5, 4, 6, and 8 hours after ingestion of study PPI drug
Cmax
Time Frame: samples collected at 0.25, 0.5, 0.75, 1, 1.5, 2, 2.5, 3, 3.5, 4, 6, and 8 hours after ingestion of study PPI drug
Weight-Adjusted maximum plasma concentration
samples collected at 0.25, 0.5, 0.75, 1, 1.5, 2, 2.5, 3, 3.5, 4, 6, and 8 hours after ingestion of study PPI drug

Secondary Outcome Measures

Secondary Outcome Measures

In a clinical study's protocol, a planned outcome measure that is not as important as the primary outcome measure for evaluating the effect of an intervention but is still of interest. Most clinical studies have more than one secondary outcome measure.
Outcome Measure
Measure Description
Time Frame
Inflammatory Cytokines
Time Frame: Cytokines obtained from blood samples collected at pantoprazole PK study visit.
Mean and standard deviation of inflammatory cytokine levels measured from 58 of 71 participants who received pantoprazole. Cytokines include: INF-γ, IL-1β, IL-6.
Cytokines obtained from blood samples collected at pantoprazole PK study visit.

Collaborators and Investigators

This is where you will find people and organizations involved with this study.

Sponsor

Sponsor

The organization or person who initiates the study and who has authority and control over the study.
Children's Mercy Hospital Kansas City

Collaborators

Collaborators

An organization other than the sponsor that provides support for a clinical study. This support may include activities related to funding, design, implementation, data analysis, or reporting.
National Institute of Diabetes and Digestive and Kidney Diseases (NIDDK)

Investigators

Investigators

A researcher involved in a clinical study. Related terms include site principal investigator, site sub-investigator, study chair, study director, and study principal investigator.
  • Principal Investigator: Kathryn Kyler, MD, MS, Children's Mercy Hospital Kansas City

Study record dates

These dates track the progress of study record and summary results submissions to ClinicalTrials.gov. Study records and reported results are reviewed by the National Library of Medicine (NLM) to make sure they meet specific quality control standards before being posted on the public website.

Study Major Dates

Study Start (Actual)

Study Start

The actual date on which the first participant was enrolled in a clinical study. The "anticipated" study start date is the date that the researchers think will be the study start date.
July 3, 2018

Primary Completion (Actual)

Primary Completion

The date on which the last participant in a clinical study was examined or received an intervention to collect final data for the primary outcome measure. Whether the clinical study ended according to the protocol or was terminated does not affect this date. For clinical studies with more than one primary outcome measure with different completion dates, this term refers to the date on which data collection is completed for all the primary outcome measures. The "anticipated" primary completion date is the date that the researchers think will be the primary completion date for the study.
December 31, 2024

Study Completion (Actual)

Study Completion

The date on which the last participant in a clinical study was examined or received an intervention/treatment to collect final data for the primary outcome measures, secondary outcome measures, and adverse events (that is, the last participant's last visit). The "anticipated" study completion date is the date that the researchers think will be the study completion date.
December 31, 2024

Study Registration Dates

First Submitted

First Submitted

The date on which the study sponsor or investigator first submitted a study record to ClinicalTrials.gov. There is typically a delay of a few days between the first submitted date and the record's availability on ClinicalTrials.gov (the first posted date).
January 27, 2020

First Submitted That Met QC Criteria

First Submitted That Met QC Criteria

The date on which the study sponsor or investigator first submits a study record that is consistent with National Library of Medicine (NLM) quality control (QC) review criteria. The sponsor or investigator may need to revise and submit a study record one or more times before NLM's QC review criteria are met. It is the responsibility of the sponsor or investigator to ensure that the study record is consistent with the NLM QC review criteria.
January 28, 2020

First Posted (Actual)

First Posted

The date on which the study record was first available on ClinicalTrials.gov after National Library of Medicine (NLM) quality control (QC) review has concluded. There is typically a delay of a few days between the date the study sponsor or investigator submitted the study record and the first posted date.
January 30, 2020

Study Record Updates

Last Update Posted (Actual)

Last Update Posted

The most recent date on which changes to a study record were made available on ClinicalTrials.gov. There may be a delay between when the changes were submitted to ClinicalTrials.gov by the study's sponsor or investigator (the last update submitted date) and the last update posted date.
June 4, 2026

Last Update Submitted That Met QC Criteria

Last Update Submitted That Met QC Criteria

The most recent date on which the study sponsor or investigator submitted changes to a study record that are consistent with National Library of Medicine (NLM) quality control (QC) review criteria. It is the responsibility of the sponsor or investigator to ensure that the study record is consistent with the NLM QC review criteria.
May 8, 2026

Last Verified

Last Verified

The most recent date on which the study sponsor or investigator confirmed the information about a clinical study on ClinicalTrials.gov as accurate and current. If a study with a recruitment status of recruiting; not yet recruiting; or active, not recruiting has not been confirmed within the past 2 years, the study's recruitment status is shown as unknown.
May 1, 2026

More Information

Terms related to this study

Additional Relevant MeSH Terms

Other Study ID Numbers

Other Study ID Numbers

Identifiers or ID numbers other than the NCT number that are assigned to a clinical study by the study's sponsor, funders, or others. These numbers may include unique identifiers from other trial registries and National Institutes of Health grant numbers.
  • STUDY00000201
  • K23DK115827-01A1 (U.S. NIH Grant/Contract)

Plan for Individual participant data (IPD)

Plan to Share Individual Participant Data (IPD)?

YES

IPD Plan Description

Deidentified experimental data may be shared with institutional collaborators outside of CMH and if it is determined that biological samples obtained from study participants must be transferred to institutions outside of CMH for the purpose of confirmatory analyses, appropriate inter-institutional material transfer agreements will first be executed. As this is a pediatric study, minimal blood volumes are being collected and we do not anticipate that biological samples will be available to share with the outside community upon completion of the study, beyond those samples that may be required for confirmatory analyses.

Drug and device information, study documents

Studies a U.S. FDA-regulated drug product

Yes

Studies a U.S. FDA-regulated device product

No

product manufactured in and exported from the U.S.

No

This information was retrieved directly from the website clinicaltrials.gov without any changes. If you have any requests to change, remove or update your study details, please contact register@clinicaltrials.gov. As soon as a change is implemented on clinicaltrials.gov, this will be updated automatically on our website as well.

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