Evaluation of Therapeutic Adherence Among Patients Followed in the Department of Hereditary Metabolic Diseases at Necker Hospital (OBSERVANCE MHM)

June 11, 2026 updated by: Assistance Publique - Hôpitaux de Paris
The purpose of this study is to evaluate treatment adherence among patients followed in the Department of Inherited Metabolic Diseases at Necker Hospital, in order to assess the need for implementing a therapeutic education workshop focused on medication adherence.

Study Overview

Status

Status

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

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

There is limited data in the literature regarding treatment adherence in children with metabolic disorders. A 2011 study on phenylketonuria highlighted a decline in dietary adherence during adolescence. Another study, dating from 1996 and focusing on urea cycle disorders, emphasized the importance of good treatment adherence for maintaining disease control. Furthermore, larger-scale research in epileptic patients has identified several barriers to treatment compliance, highlighting the crucial role of treatment adherence in improving disease control.

The purpose of this study is to evaluate treatment adherence among patients followed in the Department of Inherited Metabolic Diseases at Necker Hospital, in order to assess the need for implementing a therapeutic education workshop focused on medication adherence.

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.
Observational

Enrollment (Estimated)

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.
200

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

Study Locations

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

  • Child
  • Adult

Accepts Healthy Volunteers

No

Sampling Method

Non-Probability Sample

Study Population

Patients followed in the department of hereditary metabolic diseases at Necker Hospital, having specific oral drug treatment, and having a scheduled care appointment at Necker Hospital as part of their usual follow-up, during the study inclusion period.

Description

Inclusion Criteria:

  • All patients followed in the Hereditary Metabolic Diseases department of Necker Hospital during their visit to the department for their usual care and having a specific daily oral medication treatment.
  • Children aged at least 7 years and adolescents/young adults
  • Holders of parental authority and children or adolescents or adults' patients informed and consenting to participate in the study

Exclusion Criteria:

  • Metabolic disease without oral medication (intravenous treatments, amino acid mixtures, and dietary regimens are not evaluated).
  • Patient and parents not proficient in French.
  • Refusal by the patient's holders of parental authority or adult patient to participate in the study and/or refusal of the child/adolescent.

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

Cohorts and Interventions

Group / Cohort

Group / Cohort

A group or subgroup of participants in an observational study that is assessed for biomedical or health outcomes.
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.
Patients
Patients, children aged at least 7 years and adolescents/young adults followed in the pediatric department of hereditary metabolic diseases of Necker Hospital, having specific oral drug treatment.
Other: Questionnaire
A pseudonymized questionnaire assessing treatment adherence, understanding of the illness, knowledge of medications, and the number of oral medications taken is given to patients and/or their parents during a follow-up visit, whether in a consultation, day hospital, or conventional hospitalization. It is completed by parents and children aged 7 and older, as well as by adolescents and young adults. The responses will not be disclosed to the physicians in the department.
Other: Calculation of the metabolic balance score
For patients with urea cycle deficiency, a metabolic balance score will be calculated independently from retrospective data from the medical record, in the last two years preceding the completion of the questionnaire.

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
Assessment of therapeutic adherence
Time Frame: Time 0
Therapeutic adherence score, established from the declarations of patients and their parents to the study questionnaire.
Time 0

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
Number of treatments taken each day
Time Frame: Time 0
Quantification of the number of medications taken daily based on the declarations of patients and their parents to the study questionnaire.
Time 0
Knowledge of the disease
Time Frame: Time 0
Assessment of patients' and their parents' knowledge of the disease establish from the declarations of patients and their parents to the study questionnaire.
Time 0
Correlation between the therapeutic adherence score and the number of medications taken daily by patients
Time Frame: Time 0
The therapeutic adherence score and the number of medications taken daily are established from the declarations of patients and their parents to the study questionnaire.
Time 0
Correlation between the therapeutic adherence score and the age of patients
Time Frame: Time 0
Therapeutic adherence score, established from the declarations of patients and their parents to the study questionnaire.
Time 0
Correlation between the therapeutic adherence score and patients' and their parents' knowledge of the disease
Time Frame: Time 0
The therapeutic adherence score and the knowledge of the disease are established from the declarations of patients and their parents to the study questionnaire.
Time 0
Correlation between the therapeutic adherence score and patients' and their parents' knowledge of treatments
Time Frame: Time 0
The therapeutic adherence score and the knowledge of treatments are established from the declarations of patients and their parents to the study questionnaire and on the patient's prescription.
Time 0
Correlation between therapeutic adherence score and metabolic balance for patients cared for urea cycle deficiency
Time Frame: Time 0

For patients with urea cycle deficiency, a metabolic balance score will be calculated independently from retrospective data from the medical record, in the last two years preceding the completion of the questionnaire based on the following clinical data:

  • Number of ammonia levels > 100 µmol/L,
  • Mean and median follow-up ammonia levels,
  • Number of glutamine levels > 1000 µmol/L,
  • Number of hospitalizations for decompensation.
Time 0
Knowledge of treatments
Time Frame: Time 0
Accordance of patients' and their parents' knowledge of treatments, based on the declarations of patients and their parents in the study questionnaire and the patient's prescriptions in the medical record.
Time 0
Assessment of medication adherence in the event of a travel
Time Frame: Time 0
Assessment of patients' and their parents' medication adherence in the event of a travel, established from the declarations of patients and their parents to the study questionnaire.
Time 0

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.
Assistance Publique - Hôpitaux de Paris

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.
URC-CIC Paris Descartes Necker Cochin

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: Margaux MD GASCHIGNARD, M.D., Assistance Publique - Hôpitaux de Paris
  • Study Director: Pascale de LONLAY, M.D., PhD, Assistance Publique - Hôpitaux de Paris

Publications and helpful links

The person responsible for entering information about the study voluntarily provides these publications. These may be about anything related to the study.

General Publications

  • Modi AC, et al. "Adolescent adherence to antiepileptic drug therapy: determinants and clinical outcomes." JAMA, 2011.
  • Maestri NE, et al. "Outcome of urea cycle disorder patients: importance of metabolic control and compliance." Journal of Pediatrics, 1996.
  • Ten Hoedt AE, et al. "Adherence to treatment in phenylketonuria: challenges and improvements." Molecular Genetics and Metabolism, 2011.

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.
February 23, 2026

Primary Completion (Estimated)

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.
February 23, 2028

Study Completion (Estimated)

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.
February 23, 2028

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).
December 17, 2025

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 14, 2026

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 21, 2026

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 15, 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.
June 11, 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.
June 1, 2026

More Information

Terms related to this study

Keywords

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.
  • APHP251413

Plan for Individual participant data (IPD)

Plan to Share Individual Participant Data (IPD)?

NO

Drug and device information, study documents

Studies a U.S. FDA-regulated drug product

No

Studies a U.S. FDA-regulated device product

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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