ACTG2/FLNA Testing Yield in Adult Idiopathic Chronic Intestinal Pseudo-Obstruction (CIPO) With Reduced/Absent Distal Esophageal Contractility (CIPO_GEN)

March 3, 2026 updated by: Marina Coletta

Diagnostic Yield of ACTG2 and FLNA Gene Assessment in Adult Patients With Idiopathic Chronic Intestinal Pseudo-Obstruction and Reduced or Absent Distal Esophageal Contractility

To assess the diagnostic yield of Sanger sequencing for ACTG2 and FLNA genes evaluation on blood or saliva sample in patients with idiopathic CIPO in which high-resolution esophageal manometry (HRM) shows reduced (DCI <450 mmHg*s*cm) or absent distal esophageal contractility.

Study Overview

Status

Enrolling by invitation

Conditions

Study Type

Observational

Enrollment (Estimated)

20

Contacts and Locations

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

Study Locations

  • Italy
      • Milan, Italy, 20122
        • Ospedale Maggiore Policlinico di Milano

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
  • Older Adult

Accepts Healthy Volunteers

No

Sampling Method

Non-Probability Sample

Study Population

Study participants will be selected from adult CIPO patients referred to and followed at our tertiary referral center during the study period.

Description

Inclusion Criteria:

  • Age ≥ 18 years
  • Male or female
  • Primary chronic intestinal pseudo-obstruction (CIPO)
  • Reduced (DCI < 450 mmHg·s·cm) or absent distal esophageal contractility on high-resolution manometry (HRM)

Exclusion Criteria:

  • Secondary CIPO

  • Primary CIPO due to an autoimmune/inflammatory disorder, evidenced by the presence of any of the following antibodies:

    • anti-Hu
    • anti-GAD
    • ASMA
    • anti-gAChR

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

What is the study measuring?

Primary Outcome Measures

Outcome Measure
Time Frame
The prevalence of mutations of ACTG2 or FLNA genes in a subgroup of patients with idiopathic CIPO with a myopathic phenotype revealed by reduced or absent distal esophageal contractility evaluated with high resolution esophageal manometry
Time Frame: October 2025-October 2026
October 2025-October 2026

Collaborators and Investigators

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

Sponsor

Marina Coletta

Collaborators

Nottingham University Hospitals NHS Trust
Fondazione I.R.C.C.S. Istituto Neurologico Carlo Besta

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)

September 17, 2025

Primary Completion (Estimated)

September 30, 2026

Study Completion (Estimated)

January 30, 2027

Study Registration Dates

First Submitted

February 25, 2026

First Submitted That Met QC Criteria

February 25, 2026

First Posted (Actual)

March 4, 2026

Study Record Updates

Last Update Posted (Actual)

March 5, 2026

Last Update Submitted That Met QC Criteria

March 3, 2026

Last Verified

March 1, 2026

More Information

Terms related to this study

Keywords

Additional Relevant MeSH Terms

Other Study ID Numbers

  • ID 6328- 6328_17.09.2025_P_bis

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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