The TOPP-2 registry is an international, non-interventional, prospective registry including children and adolescents newly diagnosed with pulmonary hypertension (PH) to gain further insights in the disease course and long-term outcome of PH in childhood. Patients will undergo clinical assessments and receive standard medical care, as determined by treating physicians in their daily clinical practice. The TOPP-2 registry is specifically designed to capture the variables that have been proposed as treatment goals in PePH and the reasons for changes in treatment strategy. The TOPP-2 registry uses the new clinical classification of PH as outlined at the 5th World Symposium for Pulmonary Hypertension (WSPH) in Nice 2013 and includes new characterizations for children with PH. The registry is planned and implemented under the scientific leadership of the Association for Pediatric Pulmonary Hypertension (PePH), independently from the financial sponsors. At least 200 of the enrolled patients will have a follow-up period of 3 years.



Eligible Ages
Between 3 Months and 18 Years
Eligible Genders
Accepts Healthy Volunteers

Inclusion Criteria

  • Patient must be an incident patient, i.e.newly diagnosed with PH
  • Age at time of diagnosis is at least 3 months and less than 18 years
  • Patients must present with PH belonging to one of the following categories
  • Group 1 according to updated Nice clinical classification
  • Group 3 according to updated Nice clinical classification
  • Group 4 according to updated Nice clinical classification
  • Group 5 according to updated Nice clinical classification
  • PH confirmed by heart catheterisation (HC)
  • At HC, the patient must present with mean pulmonary arterial pressure (PAP) of at least 25 mmHg at rest, a pulmonary vascular resistance index (PVRi) equal to or below 3 Wood units*m^2 and mean pulmonary arterial wedge pressure (PAWP) below or equal to 15 mmHg
  • In case of congenital heart disease (CHD) patients who had undergone palliative procedure or repair to close systemic to pulmonary shunt, the diagnosis of PH must have been confirmed by HC at least 6 months after surgery/palliative procedure took place
  • For patients with PAH-CHD open shunt, only those considered not operable due to advanced pulmonary vascular disease are eligible
  • Patients to be included into the registry, and/or their legal guardians, must give informed consent. Where applicable patients will be asked for their written assent
  • Participating sites must agree to adhere to the recommendations of the WSPH 2015 Nice, Pediatric Taskforce.

Exclusion Criteria

  • Patients belonging to Group 2 according to updated Nice clinical classification

Study Design

Study Type
Observational [Patient Registry]
Observational Model
Time Perspective

Recruiting Locations

Children's National and nearby locations

Children's National Medical Center
Washington, District of Columbia 20010
John Berger, Dr

More Details

Association for Pediatric Pulmonary Hypertension

Study Contact

Fabrizio Canonaco, Dr


Study information shown on this site is derived from ClinicalTrials.gov (a public registry operated by the National Institutes of Health). The listing of studies provided is not certain to be all studies for which you might be eligible. Furthermore, study eligibility requirements can be difficult to understand and may change over time, so it is wise to speak with your medical care provider and individual research study teams when making decisions related to participation.