In systemic scleroderma, the incidence has been estimated to be 8 to 12% of all patients; in rheumatoid arthritis it is rare. However, in systemic lupus erythematosus it is 4 to 14%, and in sickle cell disease, it ranges from 20 to 40%. Up to 4% of people who develop a pulmonary embolism go on to develop chronic thromboembolic disease including pulmonary hypertension. A small percentage of patients with COPD develop pulmonary hypertension with no other disease to explain the high pressure. On the other hand, obesity-hypoventilation syndrome is very commonly associated with right heart failure due to pulmonary hypertension. Research
For people that inherited the disease, gene therapy is being studied. Notable cases
Elaine Kaufman, American restaurateur
Ina Balin, American Broadway and TV actress
Chloe Temtchine, American singer-songwriter
Natalie Cole, American singer

See also
Pulmonary Hypertension Association
Cambridge Pulmonary Hypertension Outcome Review (CAMPHOR)

References
Further reading
Rubin LJ, Badesch DB (August 2005). "Evaluation and management of the patient with pulmonary arterial hypertension". Annals of Internal Medicine. 143 (4): 282–92. CiteSeerX 10.1.1.463.8466. doi:10.7326/0003-4819-143-4-200508160-00009. PMID 16103472. S2CID 28841269. Abman SH, Hansmann G, Archer SL, Ivy DD, Adatia I, Chung WK,  et al. (November 2015). "Pediatric Pulmonary Hypertension: Guidelines From the American Heart Association and American Thoracic Society". Circulation. 132 (21): 2037–99. doi:10.1161/CIR.0000000000000329. PMID 26534956. S2CID 7412370. External links
The Merck Manual Home Edition: Pulmonary Hypertension
Increases and/or decreases in the genes expression regulate the progression of these immature cells toward their final forms as blood cells such as erythrocytess, certain types of lymphocytes, monocytes, and platelets) as well as certain types of tissue cells such as macrophages and mast cells. The GATA2 gene is also expressed in human endothelium, certain types of non-hematological stem cells, and, to lesser extents, prostate, endometrium, and some cancerous tissues.Monosomy of chromosome 7 (i.e. lose of one of the two chromosomes 7) or deletion of the "q" (i.e. short) in one of these two chromosomes often occurs in the various GATA2 deficiency manifestations including the Emberger syndrome. These genetic abnormalities are known causes of acute myeloid leukemia and, while not essential for, may contribute to the development of acute myeloid leukemia in the syndrome  by, for example, lowering the age and/or increasing the chances of the disorder evolving into acute myeloid leukemia. GATA2 transcription factor
The GATA2 transcription factor contains two zinc finger (i.e. ZnF) structural motifs. C-ZnF is located toward the proteins C-terminus and is responsible for binding to specific DNA sites. N-ZnF is located toward the proteins N-terminus and is responsible for interacting with various other nuclear proteins that regulate its activity.