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Genetic Research of Bone Morphogenetic Protein Receptor-II Gene in Taiwanese Patient With Primary Pulmonary Hypertension

NCT00173537 · Status: UNKNOWN · Phase: NA · Type: INTERVENTIONAL · Enrollment: 1

Last updated 2012-12-27

No results posted yet for this study

Summary

Primary pulmonary hypertension (PPH) is a rare lung disorder in which the blood pressure in the pulmonary artery rises far above normal levels for no apparent reason. The pulmonary artery is a blood vessel carrying oxygen-poor blood from the right ventricle (one of the heart's pumping chambers) to the lungs. In the lungs, the blood picks up oxygen, then flows to the heart's left side, where the left ventricle pumps it to the rest of the body through the aorta. In the United States, an estimated 500 to 1,000 new cases of primary pulmonary hypertension are diagnosed each year. The greatest number is reported in women between ages 20 and 40. However, men and women in all age ranges as well as very young children can develop PPH. Researchers have identified more than 40 BMPR2 mutations that can cause primary pulmonary hypertension. Many of these mutations introduce a stop signal that halts protein production prematurely, decreasing the amount of functional BMPR2 protein. Other mutations prevent the BMPR2 protein from reaching the cell surface, or alter its structure so it cannot form a complex with other proteins. It remains unclear how BMPR2 mutations cause primary pulmonary hypertension. Researchers suggest that a mutation in this gene prevents cell death or promotes cell proliferation, resulting in an overgrowth of cells in the blood vessels of the lungs. Cell overgrowth can narrow the diameter of the vessels, restricting blood flow and resulting in elevated blood pressure. However, it has not yet been reported regarding the genetic variants in Taiwan. Further details have been described in this project proposal.

Conditions

  • Pulmonary Hypertension

Interventions

PROCEDURE

for BMPR II study

GENETIC

BMPRII

Sponsors & Collaborators

  • National Taiwan University Hospital

    lead OTHER

Principal Investigators

  • Hsao-Hsun Hsu, MD · Department of Surgery, National Taiwan University Hospital

Study Design

Allocation
NON_RANDOMIZED
Purpose
DIAGNOSTIC
Masking
SINGLE
Model
SINGLE_GROUP

Eligibility

Sex
ALL
Healthy Volunteers
Yes

Timeline & Regulatory

Start
2005-07-31
Primary Completion
2009-11-30
Completion
2013-12-31

Countries

  • Taiwan

Study Locations

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Read the full study record

This page highlights key information. For complete eligibility criteria, study locations, investigator contacts, and the full protocol, visit the original record on ClinicalTrials.gov.

View NCT00173537 on ClinicalTrials.gov