Syndrome with pulmonary hypertension as a major feature

"Syndrome with pulmonary hypertension as a major feature" is a grouping category used by Orphanet (ORPHA:275853) to classify rare genetic or developmental syndromes in which pulmonary hypertension (PH) is a prominent and defining clinical characteristic rather than a secondary or incidental finding. Pulmonary hypertension refers to abnormally elevated blood pressure in the pulmonary arteries, which carry blood from the heart to the lungs. Over time, this increased pressure forces the right side of the heart to work harder, potentially leading to right heart failure. Patients may experience progressive shortness of breath, fatigue, chest pain, dizziness, and swelling in the legs or abdomen. Because this is a classification group rather than a single discrete disease entity, it encompasses multiple rare syndromes where pulmonary hypertension is a major defining feature. These may include conditions caused by mutations in genes such as BMPR2, EIF2AK4, TBX4, and others, each with distinct inheritance patterns and associated clinical findings. The body systems most commonly affected include the cardiovascular system (particularly the pulmonary vasculature and right heart), the respiratory system, and in some syndromic forms, the skeletal, immune, or hematologic systems. Treatment depends on the specific underlying syndrome and typically involves pulmonary vasodilator therapies such as endothelin receptor antagonists, phosphodiesterase-5 inhibitors, and prostacyclin pathway agents. Supportive care including supplemental oxygen, diuretics, and anticoagulation may also be employed. In severe or refractory cases, lung transplantation may be considered. Early diagnosis and management by a multidisciplinary team including pulmonologists, cardiologists, and clinical geneticists is essential for optimizing outcomes.

Data sourced from FDA regulatory filings and ClinicalTrials.gov. Updated periodically.

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