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Morel V, Campana-Salort E, Boyer A, Esselin F, Walther-Louvier U, Querin G, Latour P, Lia AS, Magdelaine C, Beze-Beyrie P, Behin A, Delague V, Levy N, Stojkovic T, Attarian S, Bonello-Palot N. HINT1 neuropathy: Expanding the genotype and phenotype spectrum. Clin Genet 2022; 102:379-390. [PMID: 35882622 DOI: 10.1111/cge.14198] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/02/2022] [Revised: 07/20/2022] [Accepted: 07/21/2022] [Indexed: 01/07/2023]
Abstract
Inherited peripheral neuropathy (IPN) is a heterogeneous group of disorders due to pathogenic variation in more than 100 genes. In 2012, the first cases of IPN associated with HINT1 pathogenic variations were described in 33 families sharing the same phenotype characterized by an axonal neuropathy with neuromyotonia and autosomal recessive inheritance (NMAN: OMIM #137200). Histidine Triad Nucleotide Binding Protein 1 regulates transcription, cell-cycle control, and is possibly involved in neuropsychiatric pathophysiology. Herein, we report seven French patients with NMAN identified by Next Generation Sequencing. We conducted a literature review and compared phenotypic and genotypic features with our cohort. We identified a new HINT1 pathogenic variation involved in NMAN: c.310G>C p.(Gly104Arg). This cohort is comparable with literature data regarding age of onset (7,4yo), neuronal involvement (sensorimotor 3/7 and motor pure 4/7), and skeletal abnormalities (scoliosis 3/7, feet anomalies 6/7). We expand the phenotypic spectrum of HINT1-related neuropathy by describing neurodevelopmental or psychiatric features in six out of seven individuals such as generalized anxiety disorder (GAD), obsessive-compulsive disorder (OCD), mood disorder and attention deficit hyperactivity disorder (ADHD). However, only 3/128 previously described patients had neuropsychiatric symptomatology or neurodevelopmental disorder. These features could be part of HINT1-related disease, and we should further study the clinical phenotype of the patients.
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Affiliation(s)
- Victor Morel
- APHM, CHU Timone, Département de Génétique Médicale, Marseille, France
| | - Emmanuelle Campana-Salort
- APHM, CHU Timone, Centre de référence des Maladies Neuromusculaires et de la SLA, ERN-NMD, Marseille, France
| | - Amandine Boyer
- APHM, CHU Timone, Département de Génétique Médicale, Marseille, France
| | - Florence Esselin
- CHU Montpellier, Centre de référence des Maladies du Motoneurone et des Maladies Neuromusculaires, Montpellier, France
| | - Ulrike Walther-Louvier
- CHU Montpellier, Service de Neuropédiatrie, Centre de référence des Maladies Neuromusculaires AOC (Atlantique-Occitanie-Caraïbe), Montpellier, France
| | - Giorgia Querin
- APHP, Hôpital Pitié-Salpêtrière, Centre de Référence des Maladies Neuromusculaires Nord/Est/Ile de France, Paris, France.,Institut de Myologie I-Motion clinical trials platform, Hôpital Pitié-Salpêtrière, Paris, France
| | - Philippe Latour
- CHU de Lyon, GH Est, Service de Biochimie et Biologie Moléculaire Grand Est, Bron, France
| | - Anne-Sophie Lia
- Service de Biochimie et Génétique Moléculaire, CHU, Limoges, France
| | | | | | - Anthony Behin
- APHP, Hôpital Pitié-Salpêtrière, Centre de Référence des Maladies Neuromusculaires Nord/Est/Ile de France, Paris, France
| | - Valérie Delague
- INSERM, MMG, U 1251, Marseille, France, Aix Marseille Univ, Marseille, France
| | - Nicolas Levy
- APHM, CHU Timone, Département de Génétique Médicale, Marseille, France.,INSERM, MMG, U 1251, Marseille, France, Aix Marseille Univ, Marseille, France
| | - Tanya Stojkovic
- APHP, Hôpital Pitié-Salpêtrière, Centre de Référence des Maladies Neuromusculaires Nord/Est/Ile de France, Paris, France
| | - Shahram Attarian
- APHM, CHU Timone, Centre de référence des Maladies Neuromusculaires et de la SLA, ERN-NMD, Marseille, France.,INSERM, MMG, U 1251, Marseille, France, Aix Marseille Univ, Marseille, France
| | - Nathalie Bonello-Palot
- APHM, CHU Timone, Département de Génétique Médicale, Marseille, France.,INSERM, MMG, U 1251, Marseille, France, Aix Marseille Univ, Marseille, France
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Abstract
PURPOSE OF REVIEW To provide an update on recent developments regarding acquired, antibody-mediated, neuromuscular hyperexcitability syndromes, including Isaac's and Morvan's syndromes, cramp-fasciculation syndrome and rippling muscle disease, and their genetic differential diagnoses. RECENT FINDINGS Antibodies in auto-immune peripheral nerve hyperexcitability syndromes (PNHS) are directed against CASPR2 and LGI1, proteins of the voltage-gated potassium channel (VGKC) complex. We discuss the significance of 'double-negative' VGKC antibodies in PNHS and the rationale for ceasing VGKC antibody testing (but testing CASPR2 and LGI1 antibodies instead) in clinical practice. Recent case reports also expand the possible clinical phenotypes related to CASPR2/LGI1 antibodies, but the interpretation of these findings is complicated by the frequent association of antibody-mediated neuromuscular hyperexcitability syndromes with other auto-immune disorders (e.g. myasthenia gravis).Finally, a hereditary origin of neuromuscular hyperexcitability should always be considered, even in non-VGKC-related genes, as evidenced by the recently discovered high frequency of HINT1 mutations in people of Slavic origin. SUMMARY This review provides an update on recent clinical, immunological and genetic developments in neuromuscular hyperexcitability syndromes. We also provide a guide for the clinician for diagnosing and managing these disorders in clinical practice, with a special focus on the main differential diagnoses.
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Amor-Barris S, Høyer H, Brauteset LV, De Vriendt E, Strand L, Jordanova A, Braathen GJ, Peeters K. HINT1 neuropathy in Norway: clinical, genetic and functional profiling. Orphanet J Rare Dis 2021; 16:116. [PMID: 33663550 PMCID: PMC7934415 DOI: 10.1186/s13023-021-01746-z] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/18/2020] [Accepted: 02/16/2021] [Indexed: 12/30/2022] Open
Abstract
Background Autosomal recessive axonal neuropathy with neuromyotonia has been linked to loss of functional HINT1. The disease is particularly prevalent in Central and South-East Europe, Turkey and Russia due to the high carrier frequency of the c.110G > C (p.Arg37Pro) founder variant. Results In a cohort of 748 Norwegian patients with suspected peripheral neuropathy, we identified two seemingly unrelated individuals, compound heterozygous for a new variant (c.284G > A, p.Arg95Gln) and the most common pathogenic founder variant (c.110G > C, p.Arg37Pro) in the HINT1 gene. Probands presented with motor greater than sensory neuropathy of various onset, accompanied by muscle stiffness and cramps in the limbs. Furthermore, they displayed non-classical symptoms, including pain in the extremities and signs of central nervous system involvement. Haplotype analysis in both patients revealed a common chromosomal background for p.Arg95Gln; moreover, the variant was identified in Swedish carriers. Functional characterization in HINT1-knockout and patient-derived cellular models, and in HNT1-knockout yeast, suggested that the new variant is deleterious for the function of HINT1 and provided mechanistic insights allowing patient stratification for future treatment strategies. Conclusion Our findings broaden the genetic epidemiology of HINT1-neuropathy and have implications for molecular diagnostics of inherited peripheral neuropathies in Scandinavia.
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Affiliation(s)
- Silvia Amor-Barris
- Molecular Neurogenomics Group, VIB-UAntwerp Center for Molecular Neurology, University of Antwerp, Unversiteitsplein 1, Building V, 2610, Antwerpen, Belgium.,Molecular Neurogenomics Group, Department of Biomedical Sciences, University of Antwerp, Antwerpen, Belgium
| | - Helle Høyer
- Department of Medical Genetics, Telemark Hospital Trust, Sykehuset Telemark, Postboks 2900 Kjørbekk, 3710, Skien, Norway
| | - Lin V Brauteset
- Division Elverum-Hamar, Department of Children and Youth, Innlandet Hospital Trust, Elverum, Norway
| | - Els De Vriendt
- Molecular Neurogenomics Group, VIB-UAntwerp Center for Molecular Neurology, University of Antwerp, Unversiteitsplein 1, Building V, 2610, Antwerpen, Belgium.,Molecular Neurogenomics Group, Department of Biomedical Sciences, University of Antwerp, Antwerpen, Belgium
| | - Linda Strand
- Department of Medical Genetics, Telemark Hospital Trust, Sykehuset Telemark, Postboks 2900 Kjørbekk, 3710, Skien, Norway
| | - Albena Jordanova
- Molecular Neurogenomics Group, VIB-UAntwerp Center for Molecular Neurology, University of Antwerp, Unversiteitsplein 1, Building V, 2610, Antwerpen, Belgium.,Molecular Medicine Center, Department of Medical Chemistry and Biochemistry, Medical University-Sofia, Sofia, Bulgaria
| | - Geir J Braathen
- Department of Medical Genetics, Telemark Hospital Trust, Sykehuset Telemark, Postboks 2900 Kjørbekk, 3710, Skien, Norway.
| | - Kristien Peeters
- Molecular Neurogenomics Group, VIB-UAntwerp Center for Molecular Neurology, University of Antwerp, Unversiteitsplein 1, Building V, 2610, Antwerpen, Belgium. .,Molecular Neurogenomics Group, Department of Biomedical Sciences, University of Antwerp, Antwerpen, Belgium.
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