Sultan, Tipu;
Scorrano, Giovanna;
Panciroli, Marta;
Christoforou, Marilena;
Raza Alvi, Javeria;
Di Ludovico, Armando;
Qureshi, Sameen;
... Houlden, Henry; + view all
(2024)
Clinical and molecular heterogeneity of VPS13D-related neurodevelopmental and movement disorders.
Gene
, 899
, Article 148119. 10.1016/j.gene.2023.148119.
Preview |
Text
Efthymiou_VPS13D draft Sep_23_VS.pdf Download (234kB) | Preview |
Abstract
BACKGROUND: The VPS13 family of proteins has been implicated in lipid transport and trafficking between endoplasmic reticulum and organelles, to maintain homeostasis of subcellular membranes. Recently, pathogenic variants in each human VPS13S gene, have been linked to distinct human neurodevelopmental or neurodegenerative disorders. Within the VPS13 family of genes, VPS13D is known to be implicated in mitochondria homeostasis and function. METHODS: We investigated a Pakistani sibship affected with neurodevelopmental impairment and severe hyperkinetic (choreoathetoid) movements. Whole exome sequencing (WES) and Sanger sequencing were performed to identify potential candidate variants segregating in the family. We described clinical phenotypes and natural history of the disease during a 3-year clinical follow-up and summarized literature data related to previously identified patients with VPS13D-related neurological disorders. RESULTS: We identified by WES an homozygous non-synonymous variant in VPS13D (c.5723 T > C; p.Ile1908Thr) as the potential underlying cause of the disease in our family. Two young siblings developed an early-onset neurological impairment characterized by global developmental delay, with impaired speech and motor milestones, associated to hyperkinetic movement disorders as well as progressive and non-progressive neurological abnormalities. CONCLUSION: In this study we delineated the heterogeneity of VPS13D-related clinical phenotypes and described a novel VPS13D homozygous variant associated with severe neurological impairment. Further studies will be pivotal to understand the exact VPS13D function and its impact on mitochondria homeostasis, brain development and regulation of movements, to further clarify genotype-phenotype correlations and provide crucial prognostic information and potential therapeutic implications.
| Type: | Article |
|---|---|
| Title: | Clinical and molecular heterogeneity of VPS13D-related neurodevelopmental and movement disorders |
| Location: | Netherlands |
| Open access status: | An open access version is available from UCL Discovery |
| DOI: | 10.1016/j.gene.2023.148119 |
| Publisher version: | http://dx.doi.org/10.1016/j.gene.2023.148119 |
| Language: | English |
| Additional information: | This version is the author accepted manuscript. For information on re-use, please refer to the publisher’s terms and conditions. |
| Keywords: | Chorea, Epilepsy, Mitochondria function, Movement disorders, Neurodevelopmental disorders, Vacuolar protein sorting 13, VSP13D |
| UCL classification: | UCL UCL > Provost and Vice Provost Offices > School of Life and Medical Sciences UCL > Provost and Vice Provost Offices > School of Life and Medical Sciences > Faculty of Brain Sciences UCL > Provost and Vice Provost Offices > School of Life and Medical Sciences > Faculty of Brain Sciences > UCL Queen Square Institute of Neurology UCL > Provost and Vice Provost Offices > School of Life and Medical Sciences > Faculty of Brain Sciences > UCL Queen Square Institute of Neurology > Department of Neuromuscular Diseases |
| URI: | https://discovery-pp.ucl.ac.uk/id/eprint/10186023 |
Archive Staff Only
 |
View Item |
