Impact of Endotest on Patients' Quality of Life: a Cohort Study (ENDOLIFE)

May 20, 2026 updated by: ZIWIG

Ziwig Endotest® ('Endotest') is marketed in several countries, including Switzerland, which was the first country to make it available in 2022. Since February 2025, several French clinical investigation sites have been offering Endotest, developed by Ziwig, under the innovation funding. Initially, this innovation funding enabled 2,500 patients to be included in a clinical trial (ENDOBEST: ID-RCB 2024-A02092-45). Since the end of December 2025, it has been expanded and now covers a further 22,500 patients whose are not included in the trial. This medical device is based on Next-Generation Sequencing combined with analytical algorithms and enables the identification of endometriosis from a saliva sample. This non-invasive test aims to improve patient care by reducing diagnostic delays and guiding treatment strategies.

Despite the available data on its diagnostic performance, the impact of Endotest on patients' quality of life, their emotional experience, their coping strategies, and their care pathways remains insufficiently documented. Indeed, the Endotest result (positive or negative) can significantly influence these various aspects. This cohort study aims to assess the impact of Endotest on patients' quality of life, primarily using validated self-report questionnaires and clinical data from medical records. By including a large sample of patients, this study aims to provide robust and generalisable data that will be useful for clinicians and patients themselves.

Study Overview

Status

Recruiting

Conditions

Intervention / Treatment

Study Type

Observational

Enrollment (Estimated)

20000

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 Locations

  • France
    • Gironde
      • Bordeaux, Gironde, France, 33000
        • Recruiting
        • Clinique Tivoli Ducos
        • Contact:
    • Ille-et-Vilaine
      • Saint-Grégoire, Ille-et-Vilaine, France, 35760
        • Not yet recruiting
        • Hôpital privé Saint-Grégoire
        • Contact:
    • Morbihan
      • Lorient, Morbihan, France, 56100
        • Not yet recruiting
        • Groupe Hospitalier Bretagne Sud - GHBS - Lorient
        • Contact:
    • Moselle
    • Pays de la Loire Region
      • Saint-Priest-en-Jarez, Pays de la Loire Region, France, 42270
    • Pyrénées Atlantiques
      • Pau, Pyrénées Atlantiques, France, 64000
        • Not yet recruiting
        • Centre Hospitalier De Pau
        • Contact:
    • Seine-maritime
      • Montivilliers, Seine-maritime, France, 76290
        • Not yet recruiting
        • Hôpital Jacques Monod - GH du Havre
        • Contact:

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

Ages Eligible for Study

  • Adult

Accepts Healthy Volunteers

No

Sampling Method

Probability Sample

Study Population

Patient with endometriosis for whom an Endotest is prescribed

Description

Inclusion Criteria:

  • Women with a prescription for Endotest
  • Women aged 18 to 43
  • Who have dated and signed the consent form
  • Affiliated with the French healthcare system or covered by health insurance abroad

Exclusion Criteria:

  • Contraindications for the use of Endotest:

    1. Current pregnancy;
    2. Medical history of cancer or HIV infection;
    3. Active infection at the time of saliva collection;
  • Significant difficulty reading and understanding the language of the country in which the participant is located.

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
Intervention / Treatment
Endometriosis cohort performing Ziwig ENDOTEST®
Other: Questionnaire
EHP 5+6, RAND-36 et 6 and 12 months follow-up visits

What is the study measuring?

Primary Outcome Measures

Outcome Measure
Measure Description
Time Frame
To assess the impact of Endotest on quality of life and identify the factors associated with quality of life.
Time Frame: Day 1, 6 months and 12 months.

Endometriosis-specific quality of life score on the EHP-5 + 6 questionnaire (Endometriosis Health Profile - 11 items).

Score goes from 0 to 44. Higher the score is, worse the outcome is.
Day 1, 6 months and 12 months.
To assess the impact of Endotest on quality of life and identify the factors associated with quality of life.
Time Frame: Day 1, 6 months and 12 months
Score for each of the 8 dimensions of quality of life on the RAND-36 questionnaire (declined version of the 36-Item Short Form Survey (SF-36)) Score goes from 0 to 100 for each ones of the 8 dimensions. Higher the score is, better the outocome is.
Day 1, 6 months and 12 months
To assess the impact of Endotest on quality of life and identify the factors associated with quality of life.
Time Frame: 6 months

Factors associated with the level of endometriosis-specific quality of life (EHP-5+6 (Endometriosis Health Profile - 11 items)) at 6 months.

Score goes from 0 to 44. Higher the score is, worse the outcome is.
6 months
To assess the impact of Endotest on quality of life and identify the factors associated with quality of life.
Time Frame: 6 months

Factors associated with the level of each of the 8 dimensions of general quality of life (RAND-36 (declined version of the 36-Item Short Form Survey (SF-36)) at 6 months.

Score goes from 0 to 100 for each ones of the 8 dimensions. Higher the score is, better the outocome is.
6 months

Secondary Outcome Measures

Outcome Measure
Measure Description
Time Frame
Describe the impact of Endotest on adaptation strategies.
Time Frame: 6 months
Brief-COPE score (Brief Coping Orientation to Problems Experienced) Score goes from 1 to 4 for the 3 subscales (Problem Focussed, Emotion Focussed, Avoidant) There is no direct correlation between higher/lower scores and better/worse outcomes
6 months
Describe the impact of Endotest on the assisted reproductive technology (ART) journey (including infertility assessment and fertility preservation).
Time Frame: Through study completion, an average of 1 year
Number of patients starting an assisted reproductive technology (ART) treatment programme
Through study completion, an average of 1 year
Describe the impact of Endotest on the assisted reproductive technology (ART) journey (including infertility assessment and fertility preservation).
Time Frame: Through study completion, an average of 1 year
Number of patients for whom the ART treatment plan is amended (e.g. switching from intrauterine insemination to IVF, surgery)
Through study completion, an average of 1 year
Describe the impact of Endotest's results immediately following the announcement.
Time Frame: 1 month
Personalised questionnaire on immediate emotional reactions
1 month
Describe the impact of Endotest on patient care: tests, treatments, and additional procedures (e.g., laparoscopy).
Time Frame: Through study completion, an average of 1 year
Number and type of additional tests or procedures performed (ultrasound, MRI, laparoscopy, etc.).
Through study completion, an average of 1 year
Describe the impact of Endotest on patient care: tests, treatments, and additional procedures (e.g., laparoscopy).
Time Frame: Through study completion, an average of 1 year
Initiation or modification of treatments (hormonal, pain relievers, etc.).
Through study completion, an average of 1 year
To assess the impact of Endotest on anxiety levels.
Time Frame: 1 month
Visual Analog Scale Anxiety Score Score goes from 0 to 100 Lower the score is, better the outcome is
1 month
Compare the care provided to patients with a positive Endotest result across participating countries.
Time Frame: Through study completion, an average of 1 year
Type of coverage and waiting period
Through study completion, an average of 1 year
Compare pelvic sensitivity based on Endotest results
Time Frame: Day 1 and 12 months
Convergences Score for Pelvic-Perineal Pain Score goes from 0 to 10 Lower the score is, better the outcome is.
Day 1 and 12 months

Collaborators and Investigators

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

Sponsor

ZIWIG

Collaborators

Monitoring Force Group

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)

May 6, 2026

Primary Completion (Estimated)

July 31, 2029

Study Completion (Estimated)

July 31, 2029

Study Registration Dates

First Submitted

April 8, 2026

First Submitted That Met QC Criteria

April 23, 2026

First Posted (Actual)

May 1, 2026

Study Record Updates

Last Update Posted (Actual)

May 26, 2026

Last Update Submitted That Met QC Criteria

May 20, 2026

Last Verified

May 1, 2026

More Information

Terms related to this study

Keywords

Additional Relevant MeSH Terms

Other Study ID Numbers

  • 2025ZW03
  • 2026-A00166-45 (Other Identifier: ANSM)

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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