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Travaglini, L.* ; Jeon, C. ; Rizza, T.* ; Novelli, A.* ; Specchio, N.* ; Piluso, A.* ; Bertini, E.* ; Iuso, A. ; Garone, G.*

Biallelic variants in SLC27A3 cause a complex form of neurodegeneration with brain iron accumulation.

Mov. Disord., DOI: 10.1002/mds.70079 (2025)
Verlagsversion Forschungsdaten DOI PMC
Open Access Hybrid
Creative Commons Lizenzvertrag
BACKGROUND: Complex lipid metabolism is one of the main biological pathways disrupted in neurodegeneration with brain iron accumulation (NBIA). SLC27A3 gene encodes for the very long-chain acyl-CoA synthetase 3, an acyl-CoA ligase that activates long and very long-chain fatty acids. OBJECTIVE: We report on a 19-year-old patient with an NBIA pattern harboring a homozygous, nonsense SLC27A3 variant. METHODS: SLC27A3 variants were identified using whole exome sequencing (WES). Their impact on protein function was assessed in patient fibroblasts using Western blot analysis, aerobic metabolism analysis, and fatty acid trafficking assays. RESULTS: The patient presented with progressive ataxia, neuropathy, optic atrophy, cognitive deterioration, mood disorder, and brain iron accumulation. WES unraveled the homozygous c.1138C>T, p.(Arg380Ter) variant in the SLC27A3 gene. Functional studies showed that proband's variants eliminate protein expression, severely impair mitochondrial respiration, and disrupt lipid turnover. CONCLUSION: Our results suggest that SLC27A3 biallelic nonsense variant may represent a novel cause of NBIA. © 2025 The Author(s). Movement Disorders published by Wiley Periodicals LLC on behalf of International Parkinson and Movement Disorder Society.
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Publikationstyp Artikel: Journalartikel
Dokumenttyp Wissenschaftlicher Artikel
Schlagwörter Slc27a3 ; Ataxia ; Iron ; Neurodegeneration With Brain Iron Accumulation (nbia) ; Neuropathy
ISSN (print) / ISBN 0885-3185
e-ISSN 1531-8257
Zeitschrift Movement Disorders
Verlag Wiley
Verlagsort 111 River St, Hoboken 07030-5774, Nj Usa
Begutachtungsstatus Peer reviewed
Institut(e) Institute of Neurogenomics (ING)
Förderungen Ministero della Salute