Literature DB >> 32437637

Phenotype and Outcomes of Pulmonary Hypertension Associated with Neurofibromatosis Type 1.

Etienne-Marie Jutant1,2, Xavier Jaïs3, Barbara Girerd4, Laurent Savale5, Maria-Rosa Ghigna6,7, Frédéric Perros8, Xavier Mignard9,10,11, Mitja Jevnikar3, Delphine Bourlier12, Grégoire Prevot13, Cécile Tromeur14, Fabrice Bauer15, Emmanuel Bergot16, Claire Dauphin17, Nicolas Favrolt18, Julie Traclet19, Thibaud Soumagne20, Pascal De Groote21, Céline Chabanne22, Pascal Magro23, Laurent Bertoletti24,25, Jean-Pierre Gueffet26, Ari Chaouat27, François Goupil28, Pamela Moceri29, Raphael Borie30, Elie Fadel31, Pierre Wolkenstein32, Pierre-Yves Brillet33, Gérald Simonneau34, Olivier Sitbon35, Marc Humbert36, David Montani5,37.   

Abstract

RATIONALE: Pulmonary hypertension associated with neurofibromatosis type 1 (PH-NF1) is a rare and largely unknown complication of NF1.
OBJECTIVES: To describe characteristics and outcomes of PH-NF1.
METHODS: We reported the clinical, functional, radiologic, histologic and hemodynamic characteristics, response to pulmonary arterial hypertension (PAH)-approved drugs and transplant-free survival of patients with PH-NF1 from the French PH registry.
RESULTS: We identified 49 PH-NF1 cases, characterized by a female/male ratio of 3.9 and a median age at diagnosis of 62 [18-82] years. At diagnosis, 92% were in New York Heart Association (NYHA) functional class III or IV. The 6-minute walk distance was 211 [0-460] m. Pulmonary function tests showed low diffusing capacity of the lung for carbon monoxide (DLCO) (30 [12-79] %) and severe hypoxemia (PaO2 56 [38-99] mmHg). Right heart catheterization showed severe precapillary pulmonary hypertension (PH) with a mean pulmonary artery pressure of 45 (10) mmHg and a pulmonary vascular resistance of 10.7 (4.2) WU. High-resolution computed tomography revealed cysts (76%), ground glass opacities (73%), emphysema (49%) and reticulations (39%). Forty patients received PAH-approved drugs with a significant improvement in functional class and hemodynamic parameters. Transplant-free survival at 1, 3 and 5 years was 87%, 54% and 42%, respectively, and 4 patients were transplanted. Pathologic assessment showed nonspecific interstitial pneumonia and major pulmonary vascular remodeling.
CONCLUSIONS: PH-NF1 is characterized by a female predominance, a low DLCO and severe functional and hemodynamic impairment. Despite a potential benefit of PAH treatment, prognosis remains poor, and double-lung transplantation is an option for eligible patients.

Entities:  

Keywords:  Interstitial lung disease; Neurofibromatosis type 1; Outcomes; Pulmonary hypertension

Year:  2020        PMID: 32437637     DOI: 10.1164/rccm.202001-0105OC

Source DB:  PubMed          Journal:  Am J Respir Crit Care Med        ISSN: 1073-449X            Impact factor:   21.405


  3 in total

1.  Neurofibromatosis Type 1 With Cherubism-like Phenotype, Multiple Osteolytic Bone Lesions of Lower Extremities, and Alagille-syndrome: Case Report With Literature Survey.

Authors:  Reinhard E Friedrich; Jozef Zustin; Andreas M Luebke; Thorsten Rosenbaum; Martin Gosau; Christian Hagel; Felix K Kohlrusch; Ilse Wieland; Martin Zenker
Journal:  In Vivo       Date:  2021 May-Jun       Impact factor: 2.155

2.  The Elephant Man Meets Pulmonary Hypertension. A Cautionary Tale.

Authors:  Nicole F Ruopp; Harrison W Farber
Journal:  Am J Respir Crit Care Med       Date:  2020-09-15       Impact factor: 21.405

Review 3.  Epidemiology, Pathogenesis, and Clinical Approach in Group 5 Pulmonary Hypertension.

Authors:  Mazen Al-Qadi; Barbara LeVarge; H James Ford
Journal:  Front Med (Lausanne)       Date:  2021-03-25
  3 in total

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