Phenotypic variability of non-syndromic hearing loss in patients heterozygous for both c.35delG of GJB2 and the 342-kb deletion involving GJB6.
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Phenotypic variability of non-syndromic hearing loss in patients heterozygous for both c.35delG of GJB2 and the 342-kb deletion involving GJB6. / Bolz, Hanno; Götz, Schade; Ehmer, Stefanie; Kothe, Christian; Hess, Markus; Gal, Andreas.
in: HEARING RES, Jahrgang 188, Nr. 1-2, 1-2, 2004, S. 42-46.Publikationen: SCORING: Beitrag in Fachzeitschrift/Zeitung › SCORING: Zeitschriftenaufsatz › Forschung › Begutachtung
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T1 - Phenotypic variability of non-syndromic hearing loss in patients heterozygous for both c.35delG of GJB2 and the 342-kb deletion involving GJB6.
AU - Bolz, Hanno
AU - Götz, Schade
AU - Ehmer, Stefanie
AU - Kothe, Christian
AU - Hess, Markus
AU - Gal, Andreas
PY - 2004
Y1 - 2004
N2 - Mutations in GJB2, encoding the gap junction protein connexin 26, are the most common cause of inherited non-syndromic hearing loss (NSHL), with a broad spectrum of mutations leading to recessive as well as dominant forms. It has been shown that patients who are compound heterozygous for a 342-kb deletion (Delta(GJB6-D13S1830)) involving a large portion of the 5'-part of GJB6, encoding connexin 30, and a GJB2 mutation develop NSHL due to a trait with a digenic pattern of inheritance. We have used a mutation-specific polymerase chain reaction assay to screen NSHL patients for the presence of Delta(GJB6-D13S1830) and identified two families segregating both c.35delG in GJB2 and Delta(GJB6-D13S1830). Remarkably, the severity of hearing loss due to heterozygosity for c.35delG in GJB2 in conjunction with Delta(GJB6-D13S1830) is considerably different in members of the two families, ranging from congenital deafness in one to moderate/severe hearing loss with congenital onset in the other case.
AB - Mutations in GJB2, encoding the gap junction protein connexin 26, are the most common cause of inherited non-syndromic hearing loss (NSHL), with a broad spectrum of mutations leading to recessive as well as dominant forms. It has been shown that patients who are compound heterozygous for a 342-kb deletion (Delta(GJB6-D13S1830)) involving a large portion of the 5'-part of GJB6, encoding connexin 30, and a GJB2 mutation develop NSHL due to a trait with a digenic pattern of inheritance. We have used a mutation-specific polymerase chain reaction assay to screen NSHL patients for the presence of Delta(GJB6-D13S1830) and identified two families segregating both c.35delG in GJB2 and Delta(GJB6-D13S1830). Remarkably, the severity of hearing loss due to heterozygosity for c.35delG in GJB2 in conjunction with Delta(GJB6-D13S1830) is considerably different in members of the two families, ranging from congenital deafness in one to moderate/severe hearing loss with congenital onset in the other case.
M3 - SCORING: Zeitschriftenaufsatz
VL - 188
SP - 42
EP - 46
JO - HEARING RES
JF - HEARING RES
SN - 0378-5955
IS - 1-2
M1 - 1-2
ER -