Identification of p.A684V missense mutation in the WFS1 gene as a frequent cause of autosomal dominant optic atrophy and hearing impairment

Nanna D Rendtorff; Marianne Lodahl; Houda Boulahbel; Ida R Johansen; Arti Pandya; Katherine O Welch; Virginia W Norris; Kathleen S Arnos; Maria Bitner-Glindzicz; Sarah B Emery; Marilyn B Mets; Toril Fagerheim; Kristina Eriksson; Lars Hansen; Helene Bruhn; Claes Möller; Sture Lindholm; Stefan Ensgaard; Marci M Lesperance; Lisbeth Tranebjaerg

doi:10.1002/ajmg.a.33970

Identification of p.A684V missense mutation in the WFS1 gene as a frequent cause of autosomal dominant optic atrophy and hearing impairment

Nanna D Rendtorff, Marianne Lodahl, Houda Boulahbel, Ida R Johansen, Arti Pandya, Katherine O Welch, Virginia W Norris, Kathleen S Arnos, Maria Bitner-Glindzicz, Sarah B Emery, Marilyn B Mets, Toril Fagerheim, Kristina Eriksson, Lars Hansen, Helene Bruhn, Claes Möller, Sture Lindholm, Stefan Ensgaard, Marci M Lesperance, Lisbeth Tranebjaerg

Medical Genetics Program

59 Citations (Scopus)

Abstract

Optic atrophy (OA) and sensorineural hearing loss (SNHL) are key abnormalities in several syndromes, including the recessively inherited Wolfram syndrome, caused by mutations in WFS1. In contrast, the association of autosomal dominant OA and SNHL without other phenotypic abnormalities is rare, and almost exclusively attributed to mutations in the Optic Atrophy-1 gene (OPA1), most commonly the p.R445H mutation. We present eight probands and their families from the US, Sweden, and UK with OA and SNHL, whom we analyzed for mutations in OPA1 and WFS1. Among these families, we found three heterozygous missense mutations in WFS1 segregating with OA and SNHL: p.A684V (six families), and two novel mutations, p.G780S and p.D797Y, all involving evolutionarily conserved amino acids and absent from 298 control chromosomes. Importantly, none of these families harbored the OPA1 p.R445H mutation. No mitochondrial DNA deletions were detected in muscle from one p.A684V patient analyzed. Finally, wolframin p.A684V mutant ectopically expressed in HEK cells showed reduced protein levels compared to wild-type wolframin, strongly indicating that the mutation is disease-causing. Our data support OA and SNHL as a phenotype caused by dominant mutations in WFS1 in these additional eight families. Importantly, our data provide the first evidence that a single, recurrent mutation in WFS1, p.A684V, may be a common cause of ADOA and SNHL, similar to the role played by the p.R445H mutation in OPA1. Our findings suggest that patients who are heterozygous for WFS1 missense mutations should be carefully clinically examined for OA and other manifestations of Wolfram syndrome.

Original language	English
Journal	American Journal of Medical Genetics. Part A
Volume	155
Issue number	6
Pages (from-to)	1298-313
Number of pages	16
ISSN	1552-4825
DOIs	https://doi.org/10.1002/ajmg.a.33970
Publication status	Published - Jun 2011

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Rendtorff, N. D., Lodahl, M., Boulahbel, H., Johansen, I. R., Pandya, A., Welch, K. O., Norris, V. W., Arnos, K. S., Bitner-Glindzicz, M., Emery, S. B., Mets, M. B., Fagerheim, T., Eriksson, K., Hansen, L., Bruhn, H., Möller, C., Lindholm, S., Ensgaard, S., Lesperance, M. M., & Tranebjaerg, L. (2011). Identification of p.A684V missense mutation in the WFS1 gene as a frequent cause of autosomal dominant optic atrophy and hearing impairment. American Journal of Medical Genetics. Part A, 155(6), 1298-313. https://doi.org/10.1002/ajmg.a.33970

Identification of p.A684V missense mutation in the WFS1 gene as a frequent cause of autosomal dominant optic atrophy and hearing impairment. / Rendtorff, Nanna D; Lodahl, Marianne; Boulahbel, Houda et al.
In: American Journal of Medical Genetics. Part A, Vol. 155, No. 6, 06.2011, p. 1298-313.

Research output: Contribution to journal › Journal article › Research › peer-review

Rendtorff, ND, Lodahl, M, Boulahbel, H, Johansen, IR, Pandya, A, Welch, KO, Norris, VW, Arnos, KS, Bitner-Glindzicz, M, Emery, SB, Mets, MB, Fagerheim, T, Eriksson, K, Hansen, L, Bruhn, H, Möller, C, Lindholm, S, Ensgaard, S, Lesperance, MM & Tranebjaerg, L 2011, 'Identification of p.A684V missense mutation in the WFS1 gene as a frequent cause of autosomal dominant optic atrophy and hearing impairment', American Journal of Medical Genetics. Part A, vol. 155, no. 6, pp. 1298-313. https://doi.org/10.1002/ajmg.a.33970

@article{36c57fa162564d1d8437310e68813569,

title = "Identification of p.A684V missense mutation in the WFS1 gene as a frequent cause of autosomal dominant optic atrophy and hearing impairment",

abstract = "Optic atrophy (OA) and sensorineural hearing loss (SNHL) are key abnormalities in several syndromes, including the recessively inherited Wolfram syndrome, caused by mutations in WFS1. In contrast, the association of autosomal dominant OA and SNHL without other phenotypic abnormalities is rare, and almost exclusively attributed to mutations in the Optic Atrophy-1 gene (OPA1), most commonly the p.R445H mutation. We present eight probands and their families from the US, Sweden, and UK with OA and SNHL, whom we analyzed for mutations in OPA1 and WFS1. Among these families, we found three heterozygous missense mutations in WFS1 segregating with OA and SNHL: p.A684V (six families), and two novel mutations, p.G780S and p.D797Y, all involving evolutionarily conserved amino acids and absent from 298 control chromosomes. Importantly, none of these families harbored the OPA1 p.R445H mutation. No mitochondrial DNA deletions were detected in muscle from one p.A684V patient analyzed. Finally, wolframin p.A684V mutant ectopically expressed in HEK cells showed reduced protein levels compared to wild-type wolframin, strongly indicating that the mutation is disease-causing. Our data support OA and SNHL as a phenotype caused by dominant mutations in WFS1 in these additional eight families. Importantly, our data provide the first evidence that a single, recurrent mutation in WFS1, p.A684V, may be a common cause of ADOA and SNHL, similar to the role played by the p.R445H mutation in OPA1. Our findings suggest that patients who are heterozygous for WFS1 missense mutations should be carefully clinically examined for OA and other manifestations of Wolfram syndrome.",

author = "Rendtorff, {Nanna D} and Marianne Lodahl and Houda Boulahbel and Johansen, {Ida R} and Arti Pandya and Welch, {Katherine O} and Norris, {Virginia W} and Arnos, {Kathleen S} and Maria Bitner-Glindzicz and Emery, {Sarah B} and Mets, {Marilyn B} and Toril Fagerheim and Kristina Eriksson and Lars Hansen and Helene Bruhn and Claes M{\"o}ller and Sture Lindholm and Stefan Ensgaard and Lesperance, {Marci M} and Lisbeth Tranebjaerg",

note = "Copyright {\textcopyright} 2011 Wiley-Liss, Inc.",

year = "2011",

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doi = "10.1002/ajmg.a.33970",

language = "English",

volume = "155",

pages = "1298--313",

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TY - JOUR

T1 - Identification of p.A684V missense mutation in the WFS1 gene as a frequent cause of autosomal dominant optic atrophy and hearing impairment

AU - Rendtorff, Nanna D

AU - Lodahl, Marianne

AU - Boulahbel, Houda

AU - Johansen, Ida R

AU - Pandya, Arti

AU - Welch, Katherine O

AU - Norris, Virginia W

AU - Arnos, Kathleen S

AU - Bitner-Glindzicz, Maria

AU - Emery, Sarah B

AU - Mets, Marilyn B

AU - Fagerheim, Toril

AU - Eriksson, Kristina

AU - Hansen, Lars

AU - Bruhn, Helene

AU - Möller, Claes

AU - Lindholm, Sture

AU - Ensgaard, Stefan

AU - Lesperance, Marci M

AU - Tranebjaerg, Lisbeth

PY - 2011/6

Y1 - 2011/6

N2 - Optic atrophy (OA) and sensorineural hearing loss (SNHL) are key abnormalities in several syndromes, including the recessively inherited Wolfram syndrome, caused by mutations in WFS1. In contrast, the association of autosomal dominant OA and SNHL without other phenotypic abnormalities is rare, and almost exclusively attributed to mutations in the Optic Atrophy-1 gene (OPA1), most commonly the p.R445H mutation. We present eight probands and their families from the US, Sweden, and UK with OA and SNHL, whom we analyzed for mutations in OPA1 and WFS1. Among these families, we found three heterozygous missense mutations in WFS1 segregating with OA and SNHL: p.A684V (six families), and two novel mutations, p.G780S and p.D797Y, all involving evolutionarily conserved amino acids and absent from 298 control chromosomes. Importantly, none of these families harbored the OPA1 p.R445H mutation. No mitochondrial DNA deletions were detected in muscle from one p.A684V patient analyzed. Finally, wolframin p.A684V mutant ectopically expressed in HEK cells showed reduced protein levels compared to wild-type wolframin, strongly indicating that the mutation is disease-causing. Our data support OA and SNHL as a phenotype caused by dominant mutations in WFS1 in these additional eight families. Importantly, our data provide the first evidence that a single, recurrent mutation in WFS1, p.A684V, may be a common cause of ADOA and SNHL, similar to the role played by the p.R445H mutation in OPA1. Our findings suggest that patients who are heterozygous for WFS1 missense mutations should be carefully clinically examined for OA and other manifestations of Wolfram syndrome.

AB - Optic atrophy (OA) and sensorineural hearing loss (SNHL) are key abnormalities in several syndromes, including the recessively inherited Wolfram syndrome, caused by mutations in WFS1. In contrast, the association of autosomal dominant OA and SNHL without other phenotypic abnormalities is rare, and almost exclusively attributed to mutations in the Optic Atrophy-1 gene (OPA1), most commonly the p.R445H mutation. We present eight probands and their families from the US, Sweden, and UK with OA and SNHL, whom we analyzed for mutations in OPA1 and WFS1. Among these families, we found three heterozygous missense mutations in WFS1 segregating with OA and SNHL: p.A684V (six families), and two novel mutations, p.G780S and p.D797Y, all involving evolutionarily conserved amino acids and absent from 298 control chromosomes. Importantly, none of these families harbored the OPA1 p.R445H mutation. No mitochondrial DNA deletions were detected in muscle from one p.A684V patient analyzed. Finally, wolframin p.A684V mutant ectopically expressed in HEK cells showed reduced protein levels compared to wild-type wolframin, strongly indicating that the mutation is disease-causing. Our data support OA and SNHL as a phenotype caused by dominant mutations in WFS1 in these additional eight families. Importantly, our data provide the first evidence that a single, recurrent mutation in WFS1, p.A684V, may be a common cause of ADOA and SNHL, similar to the role played by the p.R445H mutation in OPA1. Our findings suggest that patients who are heterozygous for WFS1 missense mutations should be carefully clinically examined for OA and other manifestations of Wolfram syndrome.

U2 - 10.1002/ajmg.a.33970

DO - 10.1002/ajmg.a.33970

M3 - Journal article

C2 - 21538838

SN - 1552-4825

VL - 155

SP - 1298

EP - 1313

JO - American Journal of Medical Genetics. Part A

JF - American Journal of Medical Genetics. Part A

IS - 6

ER -

Identification of p.A684V missense mutation in the WFS1 gene as a frequent cause of autosomal dominant optic atrophy and hearing impairment

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