Detection of Structural Variants by NGS: Revealing Missing Alleles in Lysosomal Storage Diseases

Lysosomal storage diseases (LSDs) are a heterogeneous group of rare multisystem metabolic disorders occurring mostly in infancy and childhood, characterized by a gradual accumulation of non-degraded substrates inside the cells. Although biochemical enzymatic assays are considered the gold standard f...

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Main Authors: Valentina La Cognata, Sebastiano Cavallaro
Format: Article
Language:English
Published: MDPI AG 2022-07-01
Series:Biomedicines
Subjects:
Online Access:https://www.mdpi.com/2227-9059/10/8/1836
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author Valentina La Cognata
Sebastiano Cavallaro
author_facet Valentina La Cognata
Sebastiano Cavallaro
author_sort Valentina La Cognata
collection DOAJ
description Lysosomal storage diseases (LSDs) are a heterogeneous group of rare multisystem metabolic disorders occurring mostly in infancy and childhood, characterized by a gradual accumulation of non-degraded substrates inside the cells. Although biochemical enzymatic assays are considered the gold standard for diagnosis of symptomatic patients, genotyping is a requirement for inclusion in enzyme replacement programs and is a prerequisite for carrier tests in relatives and DNA-based prenatal diagnosis. The emerging next-generation sequencing (NGS) technologies are now offering a powerful diagnostic tool for genotyping LSDs patients by providing faster, cheaper, and higher-resolution testing options, and are allowing to unravel, in a single integrated workflow SNVs, small insertions and deletions (indels), as well as major structural variations (SVs) responsible for the pathology. Here, we summarize the current knowledge about the most recurrent and private SVs involving LSDs-related genes, review advantages and drawbacks related to the use of the NGS in the SVs detection, and discuss the challenges to bring this type of analysis in clinical diagnostics.
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spelling doaj.art-f80f941d19a6443996da6e4c4bce6c932023-12-01T23:27:18ZengMDPI AGBiomedicines2227-90592022-07-01108183610.3390/biomedicines10081836Detection of Structural Variants by NGS: Revealing Missing Alleles in Lysosomal Storage DiseasesValentina La Cognata0Sebastiano Cavallaro1Institute for Biomedical Research and Innovation, National Research Council, 95126 Catania, ItalyInstitute for Biomedical Research and Innovation, National Research Council, 95126 Catania, ItalyLysosomal storage diseases (LSDs) are a heterogeneous group of rare multisystem metabolic disorders occurring mostly in infancy and childhood, characterized by a gradual accumulation of non-degraded substrates inside the cells. Although biochemical enzymatic assays are considered the gold standard for diagnosis of symptomatic patients, genotyping is a requirement for inclusion in enzyme replacement programs and is a prerequisite for carrier tests in relatives and DNA-based prenatal diagnosis. The emerging next-generation sequencing (NGS) technologies are now offering a powerful diagnostic tool for genotyping LSDs patients by providing faster, cheaper, and higher-resolution testing options, and are allowing to unravel, in a single integrated workflow SNVs, small insertions and deletions (indels), as well as major structural variations (SVs) responsible for the pathology. Here, we summarize the current knowledge about the most recurrent and private SVs involving LSDs-related genes, review advantages and drawbacks related to the use of the NGS in the SVs detection, and discuss the challenges to bring this type of analysis in clinical diagnostics.https://www.mdpi.com/2227-9059/10/8/1836lysosomal storage diseasesdiagnosistNGSstructural variantsCNVs
spellingShingle Valentina La Cognata
Sebastiano Cavallaro
Detection of Structural Variants by NGS: Revealing Missing Alleles in Lysosomal Storage Diseases
Biomedicines
lysosomal storage diseases
diagnosis
tNGS
structural variants
CNVs
title Detection of Structural Variants by NGS: Revealing Missing Alleles in Lysosomal Storage Diseases
title_full Detection of Structural Variants by NGS: Revealing Missing Alleles in Lysosomal Storage Diseases
title_fullStr Detection of Structural Variants by NGS: Revealing Missing Alleles in Lysosomal Storage Diseases
title_full_unstemmed Detection of Structural Variants by NGS: Revealing Missing Alleles in Lysosomal Storage Diseases
title_short Detection of Structural Variants by NGS: Revealing Missing Alleles in Lysosomal Storage Diseases
title_sort detection of structural variants by ngs revealing missing alleles in lysosomal storage diseases
topic lysosomal storage diseases
diagnosis
tNGS
structural variants
CNVs
url https://www.mdpi.com/2227-9059/10/8/1836
work_keys_str_mv AT valentinalacognata detectionofstructuralvariantsbyngsrevealingmissingallelesinlysosomalstoragediseases
AT sebastianocavallaro detectionofstructuralvariantsbyngsrevealingmissingallelesinlysosomalstoragediseases