PLA2G6 mutations associated with a continuous clinical spectrum from neuroaxonal dystrophy to hereditary spastic paraplegia

B. Ozes, N. Karagoz, R. Schüle, A. Rebelo, M. J. Sobrido, F. Harmuth, M. Synofzik, S. I.P. Pascual, M. Colak, B. Ciftci-Kavaklioglu, B. Kara, A. Ordóñez-Ugalde, B. Quintáns, M. A. Gonzalez, A. Soysal, Stephan L Zuchner, E. Battaloglu

Research output: Contribution to journalArticle

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Abstract

PLA2G6-associated neurodegeneration (PLAN) and hereditary spastic paraplegia (HSP) are 2 groups of heterogeneous neurodegenerative diseases. In this study, we report PLA2G6 gene mutations in 3 families from Turkey, Morocco, and Romania. Two affected Turkish siblings presenting HSP adds the disease to PLAN phenotypes. They were homozygous for the PLA2G6 missense c.2239C>T, p.Arg747Trp variant and the ages of onset were 9 and 21. Parkinsonism, dystonia or cognitive decline were not the clinical elements in these patients contrary to the cases that has been previously reported with the same variant, however, iron accumulation was evident in their cranial magnetic resonance imaging. The Moroccan patient was homozygous for a novel missense c.1786C>T, p.Leu596Phe variant and the Romanian patient had 2 novel mutations; c.1898C>T, p.Ala633Val and c.1765_1768del, p.Ser589ThrfsTer76. Both of these patients conformed better to childhood onset PLAN with the age of onset at 4 and 7years, respectively. Interestingly, all identified mutations were affecting the highly conserved patatin-like phospholipase domain of the PLA2G6 protein.

Original languageEnglish (US)
JournalClinical Genetics
DOIs
StateAccepted/In press - 2017

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Neuroaxonal Dystrophies
Hereditary Spastic Paraplegia
Mutation
Age of Onset
Morocco
Romania
Dystonia
Phospholipases
Parkinsonian Disorders
Turkey
Neurodegenerative Diseases
Siblings
Iron
Magnetic Resonance Imaging
Phenotype
Genes

Keywords

  • PLA2G6-associated neurodegeneration, PLAN
  • Hereditary spastic paraplegia
  • HSP, next-generation sequencing

ASJC Scopus subject areas

  • Genetics
  • Genetics(clinical)

Cite this

Ozes, B., Karagoz, N., Schüle, R., Rebelo, A., Sobrido, M. J., Harmuth, F., ... Battaloglu, E. (Accepted/In press). PLA2G6 mutations associated with a continuous clinical spectrum from neuroaxonal dystrophy to hereditary spastic paraplegia. Clinical Genetics. https://doi.org/10.1111/cge.13008

PLA2G6 mutations associated with a continuous clinical spectrum from neuroaxonal dystrophy to hereditary spastic paraplegia. / Ozes, B.; Karagoz, N.; Schüle, R.; Rebelo, A.; Sobrido, M. J.; Harmuth, F.; Synofzik, M.; Pascual, S. I.P.; Colak, M.; Ciftci-Kavaklioglu, B.; Kara, B.; Ordóñez-Ugalde, A.; Quintáns, B.; Gonzalez, M. A.; Soysal, A.; Zuchner, Stephan L; Battaloglu, E.

In: Clinical Genetics, 2017.

Research output: Contribution to journalArticle

Ozes, B, Karagoz, N, Schüle, R, Rebelo, A, Sobrido, MJ, Harmuth, F, Synofzik, M, Pascual, SIP, Colak, M, Ciftci-Kavaklioglu, B, Kara, B, Ordóñez-Ugalde, A, Quintáns, B, Gonzalez, MA, Soysal, A, Zuchner, SL & Battaloglu, E 2017, 'PLA2G6 mutations associated with a continuous clinical spectrum from neuroaxonal dystrophy to hereditary spastic paraplegia', Clinical Genetics. https://doi.org/10.1111/cge.13008
Ozes, B. ; Karagoz, N. ; Schüle, R. ; Rebelo, A. ; Sobrido, M. J. ; Harmuth, F. ; Synofzik, M. ; Pascual, S. I.P. ; Colak, M. ; Ciftci-Kavaklioglu, B. ; Kara, B. ; Ordóñez-Ugalde, A. ; Quintáns, B. ; Gonzalez, M. A. ; Soysal, A. ; Zuchner, Stephan L ; Battaloglu, E. / PLA2G6 mutations associated with a continuous clinical spectrum from neuroaxonal dystrophy to hereditary spastic paraplegia. In: Clinical Genetics. 2017.
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AU - Ozes, B.

AU - Karagoz, N.

AU - Schüle, R.

AU - Rebelo, A.

AU - Sobrido, M. J.

AU - Harmuth, F.

AU - Synofzik, M.

AU - Pascual, S. I.P.

AU - Colak, M.

AU - Ciftci-Kavaklioglu, B.

AU - Kara, B.

AU - Ordóñez-Ugalde, A.

AU - Quintáns, B.

AU - Gonzalez, M. A.

AU - Soysal, A.

AU - Zuchner, Stephan L

AU - Battaloglu, E.

PY - 2017

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AB - PLA2G6-associated neurodegeneration (PLAN) and hereditary spastic paraplegia (HSP) are 2 groups of heterogeneous neurodegenerative diseases. In this study, we report PLA2G6 gene mutations in 3 families from Turkey, Morocco, and Romania. Two affected Turkish siblings presenting HSP adds the disease to PLAN phenotypes. They were homozygous for the PLA2G6 missense c.2239C>T, p.Arg747Trp variant and the ages of onset were 9 and 21. Parkinsonism, dystonia or cognitive decline were not the clinical elements in these patients contrary to the cases that has been previously reported with the same variant, however, iron accumulation was evident in their cranial magnetic resonance imaging. The Moroccan patient was homozygous for a novel missense c.1786C>T, p.Leu596Phe variant and the Romanian patient had 2 novel mutations; c.1898C>T, p.Ala633Val and c.1765_1768del, p.Ser589ThrfsTer76. Both of these patients conformed better to childhood onset PLAN with the age of onset at 4 and 7years, respectively. Interestingly, all identified mutations were affecting the highly conserved patatin-like phospholipase domain of the PLA2G6 protein.

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