Diffuse parenchymal lung disease as first clinical manifestation of GATA-2 deficiency in childhood

. 2015 Feb 10 ; 15 () : 8. [epub] 20150210

Jazyk angličtina Země Anglie, Velká Británie Médium electronic

Typ dokumentu kazuistiky, časopisecké články, práce podpořená grantem

Perzistentní odkaz   https://www.medvik.cz/link/pmid25879889
Odkazy

PubMed 25879889
PubMed Central PMC4340788
DOI 10.1186/s12890-015-0006-2
PII: 10.1186/s12890-015-0006-2
Knihovny.cz E-zdroje

BACKGROUND: GATA-2 transcription factor deficiency has recently been described in patients with a propensity towards myeloid malignancy associated with other highly variable phenotypic features: chronic leukocytopenias (dendritic cell-, monocyto-, granulocyto-, lymphocytopenia), increased susceptibility to infections, lymphatic vasculature abnormalities, and sensorineural deafness. Patients often suffer from opportunistic respiratory infections; chronic pulmonary changes have been found in advanced disease. CASE PRESENTATION: We present a case of a 17-year-old previously healthy Caucasian male who was admitted to the hospital with fever, malaise, headache, cough and dyspnea. A chest X-ray revealed bilateral interstitial infiltrates and pneumonia was diagnosed. Despite prompt clinical improvement under antibiotic therapy, interstitial changes remained stable. A high resolution computer tomography showed severe diffuse parenchymal lung disease, while the patient's pulmonary function tests were normal and he was asymptomatic. Lung tissue biopsy revealed chronic reparative and resorptive reaction with organizing vasculitis. At the time of the initial presentation to the hospital, serological signs of acute infection with Epstein-Barr virus (EBV) were present; EBV viremia with atypical serological response persisted during two-year follow up. No other infectious agents were found. Marked monocytopenia combined with B-cell lymphopenia led to a suspicion of GATA-2 deficiency. Diagnosis was confirmed by detection of the previously published heterozygous mutation in GATA2 (c.1081 C > T, p.R361C). The patient's brother and father were both carriers of the same genetic defect. The brother had no clinically relevant ailments despite leukocyte changes similar to the index patient. The father suffered from spondylarthritis, and apart from B-cell lymphopenia, no other changes within the leukocyte pool were seen. CONCLUSION: We conclude that a diagnosis of GATA-2 deficiency should be considered in all patients with diffuse parenchymal lung disease presenting together with leukocytopenia, namely monocyto-, dendritic cell- and B-lymphopenia, irrespective of severity of the clinical phenotype. Genetic counseling and screening for GATA2 mutations within the patient's family should be provided as the phenotype is highly variable and carriers without apparent immunodeficiency are still in danger of developing myeloid malignancy. A prompt recognition of this rare condition helps to direct clinical treatment strategies and follow-up procedures.

Center for Chronic Immunodeficiency University Medical Center and University of Freiburg Freiburg im Breisgau Germany

Department of Clinical Immunology and Allergology Medical Faculty Masaryk University Brno Brno Czech Republic

Department of Medical Microbiology 2nd Faculty of Medicine Charles University Prague and University Hospital Motol Prague Czech Republic

Department of Pathology and Molecular Medicine 2nd Faculty of Medicine Charles University Prague and University Hospital Motol Prague Czech Republic

Department of Pathology and Molecular Medicine Thomayer's University Hospital Prague Czech Republic

Department of Pediatric Hematology and Oncology 2nd Faculty of Medicine Charles University Prague and University Hospital Motol Prague Czech Republic

Department of Pediatric Infectious Diseases and Rheumatology Center of Pediatrics and Adolescent Medicine University Medical Center and University of Freiburg Mathildenstrasse 1 79106 Freiburg im Breisgau Germany

Department of Pediatrics 2nd Faculty of Medicine Charles University Prague and University Hospital Motol Prague Czech Republic

Department of Pediatrics 3rd Faculty of Medicine Charles University Prague and University Hospital Kralovske Vinohrady Prague Czech Republic

Department of Radiology 2nd Faculty of Medicine Charles University Prague and University Hospital Motol Prague Czech Republic

Department of Respiratory Medicine Thomayer's University Hospital Prague Czech Republic

Molecular Genetics Lab Centre for Cardiovascular Surgery and Transplantation Brno Czech Republic

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