Bile salt export pump deficiency disease: two novel, late onset, ABCB11 mutations identified by next generation sequencing



Título del documento: Bile salt export pump deficiency disease: two novel, late onset, ABCB11 mutations identified by next generation sequencing
Revue: Annals of hepatology
Base de datos: PERIÓDICA
Número de sistema: 000407214
ISSN: 1665-2681
Autores: 1
1
2
2
2
1
3
1
1
Instituciones: 1Universita di Bologna, Dipartimento di Scienze Mediche e Chirurgiche, Bolonia, Emilia Romaña. Italia
2Universita di Bologna, Centro di Ricerca Biomedica Applicata, Bolonia, Emilia Romaña. Italia
3Universita di Roma, Ospedale Pediatrico Bambino Gesu, Roma, Lazio. Italia
Año:
Periodo: Sep-Oct
Volumen: 15
Número: 5
Paginación: 795-800
País: México
Idioma: Inglés
Tipo de documento: Artículo
Enfoque: Caso clínico
Resumen en inglés Progressive familial intrahepatic cholestasis (PFIC) is a heterogeneous group of autosomal recessive cholestatic diseases of childhood and represents the main indication for liver transplantation at this age; PFIC2 involves ABCB11 gene, that encodes the ATPdependent canalicular bile salt export pump (BSEP). Benign intrahepatic cholestasis (BRIC) identifies a group of diseases involving the same genes and characterized by intermittent attacks of cholestasis with no progression to liver cirrhosis. Diagnosis with standard sequencing techniques is expensive and available only at a few tertiary centers. We report the application of next generation sequencing (NGS) in the diagnosis of the familial intrahepatic cholestasis with a parallel sequencing of three causative genes. We identified the molecular defects in ABCB11 gene in two different probands who developed a severe cholestatic disease of unknown origin. In the first patient a compound heterozygosity for the novel frameshift mutation p.Ser1100GlnfsX38 and the missense variant p.Glu135Lys was detected. In the second patient, triggered by contraceptive therapy, we identified homozygosity for a novel missense variant p.Ala523Gly. In conclusion, these mutations seem to have a late onset and a less aggressive clinical impact, acting as an intermediate form between BRIC and PFIC
Disciplinas: Medicina
Palabras clave: Gastroenterología,
Genética,
Enfermedades hereditarias,
Colestasis intrahepática progresiva familiar,
Gama-glutamiltranspeptidasa,
Fosfatasa alcalina,
Mutaciones,
Secuencia génica
Keyword: Medicine,
Gastroenterology,
Genetics,
Hereditary diseases,
Progressive familial intrahepatic cholestasis,
Gammaglutamyl transpeptidase,
Alkaline phosphatase,
Mutations,
Gene sequence
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