Genetic Hallmarks of Patients With Congenital Portosystemic Shunts and Portopulmonary Hypertension (Gen-PoPH-CPSS)

Prof. Valérie Mc Lin

Status

Not yet enrolling

Conditions

Portopulmonary Hypertension

Pulmonary Arterial Hypertension (PAH)

Congenital Portosystemic Shunt

Treatments

Genetic: targeted gene panels analysis

Genetic: whole genome analysis

Study type

Observational

Funder types

Other

Identifiers

NCT07314814

2024-01698 (Other Identifier)

Details and patient eligibility

About

Congenital portosystemic shunt (CPSS) are rare vascular malformations causing blood from the intestines to bypass the liver and directly flow into body's general circulation. Such liver bypass can cause several health problems, one of the most severe being portopulmonary hypertension (PoPH).

The goal of this study is to identify pathogenic and potentially pathogenic genetic variants in patients who have both CPSS and PoPH. Future research will assess the contribution of these genetic variants to the development of PoPH.

The long-term goal is to use genetic information to identify patients with congenital portosystemic shunts (CPSS) or chronic liver disease who are at risk of developing PoPH to offer anticipatory management.

Children and adult patients with both CPSS and PoPH, as well as their close relatives (patient's parents and siblings) can take part in the study. Genetic variations within each family will be studied.

Enrollment

120 estimated patients

Sex

All

Ages

1 day to 99 years old

Volunteers

Accepts Healthy Volunteers

Inclusion criteria

Patient is a participant to the IRCPSS with history of PoPH
Trios composed of CPSS PoPH patients and their parents (trios are mandatory)
Brother/sister of an enrolled patient
Trios accept to provide biological samples (blood), sign the inform consent.
Siblings and/or siblings' legal representatives accept to provide biological samples (blood), sign the inform consent.

Exclusion criteria

Trio condition is not met.
No genuine parent-offspring trios (check for medically assisted procreation with donors, and adoption)
For siblings, half-brothers or half-sisters are excluded, as well as adopted children, or children issued from medically assisted procreation with donors.
Secondary portosystemic shunts
The refusal by the patient or the patient's legal representatives to provide biological samples or agree with the proposed procedure or after voluntary withdrawal from the project.
The refusal of one of the parents to provide biological samples or to agree with the proposed procedure or after voluntary withdrawal from the project.