Han family with essential tremor caused by the P421L variant of the TENM4 gene in China
- PMID: 36689009
- DOI: 10.1007/s10072-023-06603-4
Han family with essential tremor caused by the P421L variant of the TENM4 gene in China
Abstract
Background: Essential tremor (ET) is an autosomal dominant inheritance disorder. Mutations in fusion sarcoma (FUS), mitochondrial serine peptidase 2 (HTRA2), teneurin transmembrane protein 4 (TENM4), sortilin1 (SORT1), SCN11A, and notch2N-terminal-like (NOTCH2NLC) genes are associated with familial ET.
Methods: A proband with ET was tested using whole-exome sequencing and repeat-primed polymerase chain reaction. Subsequently, the family members were screened for the suspected mutation, and the results were verified using Sanger sequencing. The relationship between pedigree and phenotype was also analyzed, and structural and functional changes in the variants were predicted using bioinformatics analysis.
Results: In a family with ET, the proband (III4) and the proband's father (II1), grandfather (I1), uncle (II2), and cousin (III5) all presented with involuntary tremors of both upper limbs. The responsible mutation was identified as TENM4 c.1262C > T (p.P421L), which showed genetic co-segregation in the family survey. AlphaFold predicted a change in the spatial position of TENM4 after the P421L mutation, which may have affected its stability. AlphaFold also predicted P421L to be a deleterious variation, which would lead to lower degrees of freedom of the TENM4 protein, thereby affecting the protein's structure and stability. According to the bioinformatics analysis, TENM4 (p.P421L) may reduce the signal reaching the nucleus by affecting the expression of TENM4 messenger RNA (mRNA), thereby impairing the normal oligodendrocyte differentiation process and leading to impaired myelination.
Conclusion: This study revealed that the TENM4 (p.P421L) pathogenic missense variation was responsible for ET in the proband.
Keywords: Essential tremor; Missense variation; Myelin sheath; Oligodendrocyte; TENM4.
© 2023. Fondazione Società Italiana di Neurologia.
Similar articles
-
Missense mutations in TENM4, a regulator of axon guidance and central myelination, cause essential tremor.Hum Mol Genet. 2015 Oct 15;24(20):5677-86. doi: 10.1093/hmg/ddv281. Epub 2015 Jul 17. Hum Mol Genet. 2015. PMID: 26188006 Free PMC article.
-
Genetic testing of FUS, HTRA2, and TENM4 genes in Chinese patients with essential tremor.CNS Neurosci Ther. 2020 Aug;26(8):837-841. doi: 10.1111/cns.13305. Epub 2020 Mar 20. CNS Neurosci Ther. 2020. PMID: 32196977 Free PMC article.
-
Parkinson's Disease in Teneurin Transmembrane Protein 4 (TENM4) Mutation Carriers.Front Genet. 2020 Dec 22;11:598064. doi: 10.3389/fgene.2020.598064. eCollection 2020. Front Genet. 2020. PMID: 33414808 Free PMC article.
-
Genomic Markers for Essential Tremor.Pharmaceuticals (Basel). 2021 May 27;14(6):516. doi: 10.3390/ph14060516. Pharmaceuticals (Basel). 2021. PMID: 34072005 Free PMC article. Review.
-
[Progress in genetic research on essential tremor].Zhonghua Yi Xue Yi Chuan Xue Za Zhi. 2017 Oct 10;34(5):767-771. doi: 10.3760/cma.j.issn.1003-9406.2017.05.032. Zhonghua Yi Xue Yi Chuan Xue Za Zhi. 2017. PMID: 28981951 Review. Chinese.
Cited by
-
Six Myths and Misconceptions about Essential Tremor.Tremor Other Hyperkinet Mov (N Y). 2024 Sep 25;14:49. doi: 10.5334/tohm.948. eCollection 2024. Tremor Other Hyperkinet Mov (N Y). 2024. PMID: 39346807 Free PMC article. Review.
References
-
- Benito-Leon J, Louis ED (2006) Essential tremor: emerging views of a common disorder. Nat Clin Pract Neurol 2(12):666–78. https://doi.org/10.1038/ncpneuro0347 . (quiz 2p following 91) - DOI - PubMed
-
- Tallon-Barranco A, Vazquez A, Javier Jimenez-Jimenez F, Orti-Pareja M, Gasalla T, Cabrera-Valdivia F et al (1997) Clinical features of essential tremor seen in neurology practice: a study of 357 patients. Parkinsonism Relat Disord 3(4):187–190. https://doi.org/10.1016/s1353-8020(97)00031-x - DOI - PubMed
-
- Jimenez-Jimenez FJ, Alonso-Navarro H, Garcia-Martin E, Lorenzo-Betancor O, Pastor P, Agundez JA (2013) Update on genetics of essential tremor. Acta Neurol Scand 128(6):359–371. https://doi.org/10.1111/ane.12148 - DOI - PubMed
-
- Siokas V, Aloizou AM, Tsouris Z, Liampas I, Aslanidou P, Dastamani M et al (2020) Genetic risk factors for essential tremor: a review. Tremor Other Hyperkinet Mov (N Y) 10:4. https://doi.org/10.5334/tohm.67 - DOI - PubMed
-
- Louis ED (2001) Etiology of essential tremor: should we be searching for environmental causes? Mov Disord 16(5):822–829. https://doi.org/10.1002/mds.1183 - DOI - PubMed
MeSH terms
Substances
Grants and funding
LinkOut - more resources
Full Text Sources
Molecular Biology Databases