Genetic analysis and clinical picture of severe congenital neutropenia in Israel.
Pediatr Blood Cancer
; 62(1): 103-8, 2015 Jan.
Article
en En
| MEDLINE
| ID: mdl-25284454
ABSTRACT
BACKGROUND:
The relative frequency of mutated genes among patients with severe congenital neutropenia (SCN) may differ between various ethnic groups. To date, few population-based genetic studies have been reported. This study describes the genetic analysis of 32 Israeli patients with SCN. PROCEDURES Clinical data were retrieved from the prospective Israeli Inherited Bone Marrow Failure Registry. Recruitment included living and deceased patients who were diagnosed between 1982 and 2012, for whom molecular diagnosis was performed. ELANE, HAX1 and G6PC3 genes were sequenced in all patients, and GFI-1 and WAS genes were sequenced if other genes were wildtype.RESULTS:
Eleven patients (34%) had heterozygous mutations in ELANE (10 kindreds), eight (25%) had homozygous mutations in G6PC3 (5 kindreds) and 13 (41%) had no detected mutations. No patients had mutations in HAX1 or WAS. Four of the eight patients with G6PC3 mutations had congenital anomalies. The probability of survival for all patients was 50% at age of 18. Deaths were mainly due to sepsis (5 patients, 4/5 not responding to G-CSF, none with G6PC3 mutation). Two patients developed acute myelogenous leukemia (AML) and one myelodysplastic syndrome (MDS), none with G6PC3 mutation.CONCLUSIONS:
We found a unique pattern of SCN mutations in Israel with homozygous G6PC3 mutations in eight (25%) patients, the highest frequency described so far. HAX1 mutations, reported mainly in Sweden and Iran, were absent. Patients with G6PC3 mutations had congenital anomalies, appeared to have a better response to G-CSF, and so far have not developed AML or MDS.Palabras clave
Texto completo:
1
Colección:
01-internacional
Base de datos:
MEDLINE
Asunto principal:
Pruebas Genéticas
/
Glucosa-6-Fosfatasa
/
Proteínas Adaptadoras Transductoras de Señales
/
Mutación
/
Neutropenia
Tipo de estudio:
Observational_studies
/
Prognostic_studies
/
Risk_factors_studies
País/Región como asunto:
Asia
Idioma:
En
Revista:
Pediatr Blood Cancer
Asunto de la revista:
HEMATOLOGIA
/
NEOPLASIAS
/
PEDIATRIA
Año:
2015
Tipo del documento:
Article
País de afiliación:
Israel