ClinVar Genomic variation as it relates to human health
NM_016042.4(EXOSC3):c.92G>C (p.Gly31Ala)
The aggregate germline classification for this variant, typically for a monogenic or Mendelian disorder as in the ACMG/AMP guidelines, or for response to a drug. This value is calculated by NCBI based on data from submitters. Read our rules for calculating the aggregate classification.
Stars represent the aggregate review status, or the level of review supporting the aggregate germline classification for this VCV record. This value is calculated by NCBI based on data from submitters. Read our rules for calculating the review status. The number of submissions which contribute to this review status is shown in parentheses.
No data submitted for somatic clinical impact
No data submitted for oncogenicity
Variant Details
- Identifiers
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NM_016042.4(EXOSC3):c.92G>C (p.Gly31Ala)
Variation ID: 31691 Accession: VCV000031691.54
- Type and length
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single nucleotide variant, 1 bp
- Location
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Cytogenetic: 9p13.2 9: 37784953 (GRCh38) [ NCBI UCSC ] 9: 37784950 (GRCh37) [ NCBI UCSC ]
- Timeline in ClinVar
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First in ClinVar Help The date this variant first appeared in ClinVar with each type of classification.
Last submission Help The date of the most recent submission for each type of classification for this variant.
Last evaluated Help The most recent date that a submitter evaluated this variant for each type of classification.
Germline Feb 27, 2015 Oct 26, 2024 Mar 1, 2024 - HGVS
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Nucleotide Protein Molecular
consequenceNM_016042.4:c.92G>C MANE Select Help Transcripts from the Matched Annotation from the NCBI and EMBL-EBI (MANE) collaboration.
NP_057126.2:p.Gly31Ala missense NM_001002269.2:c.92G>C NP_001002269.1:p.Gly31Ala missense NC_000009.12:g.37784953C>G NC_000009.11:g.37784950C>G NG_032780.1:g.5140G>C Q9NQT5:p.Gly31Ala - Protein change
- G31A
- Other names
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- Canonical SPDI
- NC_000009.12:37784952:C:G
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Functional
consequence HelpThe effect of the variant on RNA or protein function, based on experimental evidence from submitters.
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Global minor allele
frequency (GMAF) HelpThe global minor allele frequency calculated by the 1000 Genomes Project. The minor allele at this location is indicated in parentheses and may be different from the allele represented by this VCV record.
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Allele frequency
Help
The frequency of the allele represented by this VCV record.
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Trans-Omics for Precision Medicine (TOPMed) 0.00000
Exome Aggregation Consortium (ExAC) 0.00001
The Genome Aggregation Database (gnomAD), exomes 0.00002
- Links
Genes
Gene | OMIM | ClinGen Gene Dosage Sensitivity Curation |
Variation Viewer
Help
Links to Variation Viewer, a genome browser to view variation data from NCBI databases. |
Related variants | ||
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HI score
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The haploinsufficiency score for the gene, curated by ClinGen’s Dosage Sensitivity Curation task team. |
TS score
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The triplosensitivity score for the gene, curated by ClinGen’s Dosage Sensitivity Curation task team. |
Within gene
Help
The number of variants in ClinVar that are contained within this gene, with a link to view the list of variants. |
All
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The number of variants in ClinVar for this gene, including smaller variants within the gene and larger CNVs that overlap or fully contain the gene. |
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EXOSC3 | - | - |
GRCh38 GRCh37 |
246 | 336 |
Conditions - Germline
Condition
Help
The condition for this variant-condition (RCV) record in ClinVar. |
Classification
Help
The aggregate germline classification for this variant-condition (RCV) record in ClinVar. The number of submissions that contribute to this aggregate classification is shown in parentheses. (# of submissions) |
Review status
Help
The aggregate review status for this variant-condition (RCV) record in ClinVar. This value is calculated by NCBI based on data from submitters. Read our rules for calculating the review status. |
Last evaluated
Help
The most recent date that a submitter evaluated this variant for the condition. |
Variation/condition record
Help
The RCV accession number, with most recent version number, for the variant-condition record, with a link to the RCV web page. |
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Pathogenic/Likely pathogenic (16) |
criteria provided, multiple submitters, no conflicts
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Aug 16, 2023 | RCV000024369.42 | |
Pathogenic (1) |
criteria provided, single submitter
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Oct 9, 2019 | RCV000853550.9 | |
Pathogenic (4) |
criteria provided, multiple submitters, no conflicts
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May 2, 2022 | RCV001092265.36 | |
Pathogenic (1) |
criteria provided, single submitter
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Mar 1, 2024 | RCV004586024.1 |
Submissions - Germline
Classification
Help
The submitted germline classification for each SCV record. (Last evaluated) |
Review status
Help
Stars represent the review status, or the level of review supporting the submitted (SCV) record. This value is calculated by NCBI based on data from the submitter. Read our rules for calculating the review status. This column also includes a link to the submitter’s assertion criteria if provided, and the collection method. (Assertion criteria) |
Condition
Help
The condition for the classification, provided by the submitter for this submitted (SCV) record. This column also includes the affected status and allele origin of individuals observed with this variant. |
Submitter
Help
The submitting organization for this submitted (SCV) record. This column also includes the SCV accession and version number, the date this SCV first appeared in ClinVar, and the date that this SCV was last updated in ClinVar. |
More information
Help
This column includes more information supporting the classification, including citations, the comment on classification, and detailed evidence provided as observations of the variant by the submitter. |
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Pathogenic
(Aug 11, 2014)
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criteria provided, single submitter
Method: clinical testing
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Pontocerebellar hypoplasia, type 1B
Affected status: yes
Allele origin:
germline
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Genetic Services Laboratory, University of Chicago
Accession: SCV000247330.1
First in ClinVar: Oct 05, 2015 Last updated: Oct 05, 2015 |
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Pathogenic
(Nov 28, 2017)
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criteria provided, single submitter
Method: clinical testing
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Pontocerebellar hypoplasia type 1B
(Autosomal recessive inheritance)
Affected status: yes
Allele origin:
germline
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Institute of Human Genetics Munich, Klinikum Rechts Der Isar, TU München
Accession: SCV000680221.1
First in ClinVar: Feb 08, 2018 Last updated: Feb 08, 2018 |
Sex: female
Tissue: blood
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Pathogenic
(Oct 09, 2019)
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criteria provided, single submitter
Method: clinical testing
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Severe intrauterine growth retardation
Fetal akinesia deformation sequence 1 Lissencephaly Microcephaly Abnormal cerebellum morphology Hypoplasia of the pons Paucity of anterior horn motor neurons (Autosomal recessive inheritance)
Affected status: yes
Allele origin:
inherited
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Department of Genetics, Rouen University Hospital, Normandy Center for Genomic and Personalized Medicine
Accession: SCV000995079.1
First in ClinVar: Nov 02, 2019 Last updated: Nov 02, 2019 |
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Pathogenic
(Nov 18, 2016)
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criteria provided, single submitter
Method: clinical testing
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not provided
Affected status: yes
Allele origin:
germline
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Clinical Genetics and Genomics, Karolinska University Hospital
Accession: SCV001450345.1
First in ClinVar: Dec 12, 2020 Last updated: Dec 12, 2020 |
Number of individuals with the variant: 1
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Pathogenic
(Jan 01, 2022)
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criteria provided, single submitter
Method: clinical testing
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Pontocerebellar hypoplasia type 1B
Affected status: yes
Allele origin:
paternal
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Provincial Medical Genetics Program of British Columbia, University of British Columbia
Accession: SCV002496393.1
First in ClinVar: Apr 11, 2022 Last updated: Apr 11, 2022 |
Sex: female
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Likely pathogenic
(Feb 25, 2022)
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criteria provided, single submitter
Method: clinical testing
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Pontocerebellar hypoplasia type 1B
Affected status: yes
Allele origin:
germline
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Institute of Human Genetics, University Hospital Muenster
Accession: SCV002499697.1
First in ClinVar: Apr 23, 2022 Last updated: Apr 23, 2022 |
Comment:
ACMG categories: PM2,PM3,PP3,PP5
Number of individuals with the variant: 1
Clinical Features:
Global developmental delay (present)
Age: 0-9 years
Sex: male
Tissue: blood
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Pathogenic
(Jun 29, 2022)
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criteria provided, single submitter
Method: clinical testing
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Pontocerebellar hypoplasia type 1B
Affected status: yes
Allele origin:
germline
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MGZ Medical Genetics Center
Accession: SCV002580899.1
First in ClinVar: Oct 15, 2022 Last updated: Oct 15, 2022
Comment:
ACMG criteria applied: PS4, PM3, PS3_SUP, PM2_SUP, PP1, PP3
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Number of individuals with the variant: 3
Sex: female
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Pathogenic
(Feb 16, 2022)
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criteria provided, single submitter
Method: clinical testing
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Pontocerebellar hypoplasia type 1B
Affected status: unknown
Allele origin:
unknown
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Fulgent Genetics, Fulgent Genetics
Accession: SCV002810939.1
First in ClinVar: Dec 31, 2022 Last updated: Dec 31, 2022 |
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Pathogenic
(May 02, 2022)
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criteria provided, single submitter
Method: clinical testing
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Not Provided
Affected status: yes
Allele origin:
germline
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GeneDx
Accession: SCV001801416.3
First in ClinVar: Aug 21, 2021 Last updated: Mar 04, 2023 |
Comment:
Published yeast functional studies demonstrate a damaging effect with impaired pre-rRNA processing (Gillespie et al., 2017); Not observed at a significant frequency in large population … (more)
Published yeast functional studies demonstrate a damaging effect with impaired pre-rRNA processing (Gillespie et al., 2017); Not observed at a significant frequency in large population cohorts (gnomAD); In silico analysis, which includes protein predictors and evolutionary conservation, supports a deleterious effect; This variant is associated with the following publications: (PMID: 30986545, 27777260, 27876572, 23883322, 28053271, 29096039, 22544365, 30221345, 30025162, 29656927, 34426522, 31589614, 31770597, 24524299) (less)
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Pathogenic
(Jul 24, 2022)
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criteria provided, single submitter
Method: clinical testing
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Pontocerebellar hypoplasia type 1B
Affected status: yes
Allele origin:
germline
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Laboratorio de Genetica e Diagnostico Molecular, Hospital Israelita Albert Einstein
Accession: SCV003807523.1
First in ClinVar: Mar 04, 2023 Last updated: Mar 04, 2023 |
Comment:
ACMG classification criteria: PS3 supporting, PS4 strong, PM2 moderated, PM3 strong, PP1 strong, PP3 supporting
Number of individuals with the variant: 1
Clinical Features:
Primary Caesarian section (present) , Abnormal delivery (present) , Caesarian section (present) , Generalized hypotonia (present) , Global developmental delay (present)
Geographic origin: Brazil
Method: Paired-end whole-genome sequencing
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Pathogenic
(-)
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criteria provided, single submitter
Method: research
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Pontocerebellar hypoplasia type 1B
(Autosomal recessive inheritance)
Affected status: yes
Allele origin:
germline
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Department Of Human Genetics, Institute Of Clinical And Translational Research, Biomedical Research Center, Slovak Academy Of Sciences
Accession: SCV004227980.1
First in ClinVar: Jan 06, 2024 Last updated: Jan 06, 2024 |
Comment:
The p.(Gly31Ala) variant has a low general population frequency (G = 0.000020 in gnomAD) and it has not been found in the general Slovak population … (more)
The p.(Gly31Ala) variant has a low general population frequency (G = 0.000020 in gnomAD) and it has not been found in the general Slovak population (PMID: 31054297). It is frequent in Czech Roma patients (the founder effect was suggested) and 4.4 % of unrelated Czech Roma control individuals were carriers (PMID: 23883322). Slovak patients show the same or highly similar haplotype, indicating a common origin (PMID: 35852507) (there has been a close connection between the Slovak and Czech populations). Interestingly, in the study PMID: 24524299 all patients who carried this variant were of Roma/Gypsy descent, although living in different countries (Sweden and Hungary) (a common founder?) (PMID: 23284067, PMID: 23883322). The variant is in the EXOSC3 N-terminal domain that is important for intersubunit interactions: residue Gly31 has been shown tightly packed against the surface of EXOSC5, indicating its importance for EXOSC3-EXOSC5 interactions (PMID: 29093021, PMID: 27777260). Patients homozygous for this variant manifest a severe disease course including death during infancy and hypoplasia of the pons (PMID: 24524299). (less)
Number of individuals with the variant: 3
Family history: yes
Secondary finding: no
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Pathogenic
(Feb 19, 2022)
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criteria provided, single submitter
Method: clinical testing
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Pontocerebellar hypoplasia type 1B
Affected status: unknown
Allele origin:
germline
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Revvity Omics, Revvity
Accession: SCV003823866.2
First in ClinVar: Mar 04, 2023 Last updated: Feb 04, 2024 |
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Pathogenic
(Aug 16, 2023)
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criteria provided, single submitter
Method: clinical testing
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Pontocerebellar hypoplasia type 1B
Affected status: unknown
Allele origin:
germline
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Labcorp Genetics (formerly Invitae), Labcorp
Accession: SCV002238472.3
First in ClinVar: Mar 28, 2022 Last updated: Feb 14, 2024 |
Comment:
For these reasons, this variant has been classified as Pathogenic. Experimental studies have shown that this missense change affects EXOSC3 function (PMID: 22544365, 28053271). This … (more)
For these reasons, this variant has been classified as Pathogenic. Experimental studies have shown that this missense change affects EXOSC3 function (PMID: 22544365, 28053271). This sequence change replaces glycine, which is neutral and non-polar, with alanine, which is neutral and non-polar, at codon 31 of the EXOSC3 protein (p.Gly31Ala). This variant is present in population databases (rs387907196, gnomAD 0.003%). This missense change has been observed in individuals with pontocerebellar hypoplasia (PMID: 22544365, 30221345). It has also been observed to segregate with disease in related individuals. ClinVar contains an entry for this variant (Variation ID: 31691). Advanced modeling of protein sequence and biophysical properties (such as structural, functional, and spatial information, amino acid conservation, physicochemical variation, residue mobility, and thermodynamic stability) performed at Invitae indicates that this missense variant is expected to disrupt EXOSC3 protein function. (less)
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Pathogenic
(Mar 01, 2024)
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criteria provided, single submitter
Method: research
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Congenital myopathy
Affected status: yes
Allele origin:
germline
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Muscle and Diseases Team, Institut de Génétique et Biologie Moléculaire et Cellulaire
Accession: SCV005038553.1
First in ClinVar: Jul 15, 2024 Last updated: Jul 15, 2024 |
Comment:
PS1+PM1+PM2+PP2+PP3+PP4+PP5
Number of individuals with the variant: 1
Sex: male
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Pathogenic
(Jan 01, 2020)
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criteria provided, single submitter
Method: clinical testing
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not provided
Affected status: yes
Allele origin:
germline
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CeGaT Center for Human Genetics Tuebingen
Accession: SCV001248685.26
First in ClinVar: May 12, 2020 Last updated: Oct 20, 2024 |
Number of individuals with the variant: 3
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Pathogenic
(Oct 23, 2020)
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criteria provided, single submitter
Method: clinical testing
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not provided
(Unknown mechanism)
Affected status: yes
Allele origin:
germline
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Institute of Medical Genetics and Applied Genomics, University Hospital Tübingen
Accession: SCV001447486.1
First in ClinVar: Nov 28, 2020 Last updated: Nov 28, 2020 |
Clinical Features:
Hypotonia (present) , Axial hypotonia (present) , Tongue fasciculations (present)
Sex: male
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Likely pathogenic
(-)
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criteria provided, single submitter
Method: clinical testing
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Pontocerebellar hypoplasia type 1B
Affected status: yes
Allele origin:
unknown
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3billion
Accession: SCV004013766.1
First in ClinVar: Jul 22, 2023 Last updated: Jul 22, 2023 |
Comment:
The variant is observed at an extremely low frequency in the gnomAD v2.1.1 dataset (total allele frequency: 0.002%). In silico tool predictions suggest damaging effect … (more)
The variant is observed at an extremely low frequency in the gnomAD v2.1.1 dataset (total allele frequency: 0.002%). In silico tool predictions suggest damaging effect of the variant on gene or gene product (REVEL: 0.74; 3Cnet: 0.81). Same nucleotide change resulting in same amino acid change has been previously reported as pathogenic/likely pathogenic with strong evidence (ClinVar ID: VCV000031691 / PMID: 22544365). The variant has been reported to be in trans with a pathogenic variant as either compound heterozygous or homozygous in at least one similarly affected unrelated individual (PMID: 22544365). Therefore, this variant is classified as Likely pathogenic according to the recommendation of ACMG/AMP guideline. (less)
Clinical Features:
Generalized hypotonia (present) , Areflexia (present) , Hip contracture (present) , Elbow flexion contracture (present) , Ankle flexion contracture (present) , Knee flexion contracture (present) … (more)
Generalized hypotonia (present) , Areflexia (present) , Hip contracture (present) , Elbow flexion contracture (present) , Ankle flexion contracture (present) , Knee flexion contracture (present) , Abnormal facial shape (present) (less)
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Pathogenic
(Dec 01, 2013)
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no assertion criteria provided
Method: literature only
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PONTOCEREBELLAR HYPOPLASIA, TYPE 1B
Affected status: not provided
Allele origin:
germline
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OMIM
Accession: SCV000045662.3
First in ClinVar: Apr 04, 2013 Last updated: Feb 27, 2015 |
Comment on evidence:
In 2 Czech sibs with pontocerebellar hypoplasia type 1B (PCH1B; 614678), Wan et al. (2012) identified compound heterozygosity for 2 mutations in the EXOSC3 gene: … (more)
In 2 Czech sibs with pontocerebellar hypoplasia type 1B (PCH1B; 614678), Wan et al. (2012) identified compound heterozygosity for 2 mutations in the EXOSC3 gene: a 92G-C transversion in exon 1, resulting in a gly31-to-ala (G31A) substitution at a highly conserved residue in the N-terminal domain, and a 712T-C transition in exon 4, resulting in a trp238-to-arg (W238R; 606489.0005) substitution at a highly conserved residue in the putative RNA-binding KH domain. Another unrelated Czech boy with the disorder was homozygous for the G31A mutation. Neither mutation was found in 379 control individuals. Schwabova et al. (2013) identified a homozygous G31A mutation in 2 unrelated Czech children of Roma descent with PCH1B. The heterozygous mutation was found in 4 (4.4%) of 90 unrelated Roma control individuals, and haplotype analysis suggested a founder effect. The patients had a severe form of the disorder, with death in the first year of life. (less)
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Likely pathogenic
(-)
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no assertion criteria provided
Method: clinical testing
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Pontocerebellar hypoplasia type 1B
Affected status: yes
Allele origin:
germline
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Genomics England Pilot Project, Genomics England
Accession: SCV001760238.1
First in ClinVar: Jul 31, 2021 Last updated: Jul 31, 2021 |
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Likely pathogenic
(Jun 01, 2022)
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no assertion criteria provided
Method: provider interpretation
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Pontocerebellar hypoplasia type 1B
Affected status: yes
Allele origin:
inherited
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Solve-RD Consortium
Accession: SCV005091396.1
First in ClinVar: Oct 26, 2024 Last updated: Oct 26, 2024
Comment:
Variant identified during reanalysis of unsolved cases by the Solve-RD project. The Solve-RD project has received funding from the European Union’s Horizon 2020 research and … (more)
Variant identified during reanalysis of unsolved cases by the Solve-RD project. The Solve-RD project has received funding from the European Union’s Horizon 2020 research and innovation programme under grant agreement No 779257. (less)
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Comment:
Variant confirmed as disease-causing by referring clinical team
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Pathogenic
(Nov 02, 2021)
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no assertion criteria provided
Method: clinical testing
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Pontocerebellar hypoplasia type 1B
Affected status: yes
Allele origin:
germline
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Clinical Genetics Laboratory, University Hospital Schleswig-Holstein
Accession: SCV002583327.1
First in ClinVar: Oct 15, 2022 Last updated: Oct 15, 2022 |
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not provided
(-)
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no classification provided
Method: literature only
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Pontocerebellar hypoplasia type 1B
Affected status: yes
Allele origin:
germline
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GeneReviews
Accession: SCV000189383.2
First in ClinVar: Oct 11, 2015 Last updated: Oct 01, 2022 |
Ethnicity/Population group: Prevalent among the Roma population.
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Germline Functional Evidence
There is no functional evidence in ClinVar for this variation. If you have generated functional data for this variation, please consider submitting that data to ClinVar. |
Citations for germline classification of this variant
HelpTitle | Author | Journal | Year | Link |
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Exome sequencing in undiagnosed congenital myopathy reveals new genes and refines genes-phenotypes correlations. | de Feraudy Y | Genome medicine | 2024 | DOI: 10.1186/s13073-024-01353-0 |
EXOSC3 Pontocerebellar Hypoplasia. | Adam MP | - | 2020 | PMID: 25144110 |
Sarcomeric disorganization and nemaline bodies in muscle biopsies of patients with EXOSC3-related type 1 pontocerebellar hypoplasia. | Pinto MM | Muscle & nerve | 2019 | PMID: 30025162 |
Genomic screening in rare disorders: New mutations and phenotypes, highlighting ALG14 as a novel cause of severe intellectual disability. | Kvarnung M | Clinical genetics | 2018 | PMID: 30221345 |
Mutations of EXOSC3/Rrp40p associated with neurological diseases impact ribosomal RNA processing functions of the exosome in S. cerevisiae. | Gillespie A | RNA (New York, N.Y.) | 2017 | PMID: 28053271 |
EXOSC3 mutations in pontocerebellar hypoplasia type 1: novel mutations and genotype-phenotype correlations. | Eggens VR | Orphanet journal of rare diseases | 2014 | PMID: 24524299 |
Homozygous EXOSC3 mutation c.92G→C, p.G31A is a founder mutation causing severe pontocerebellar hypoplasia type 1 among the Czech Roma. | Schwabova J | Journal of neurogenetics | 2013 | PMID: 23883322 |
Mutations in the RNA exosome component gene EXOSC3 cause pontocerebellar hypoplasia and spinal motor neuron degeneration. | Wan J | Nature genetics | 2012 | PMID: 22544365 |
Text-mined citations for rs387907196 ...
HelpRecord last updated Nov 10, 2024
This date represents the last time this VCV record was updated. The update may be due to an update to one of the included submitted records (SCVs), or due to an update that ClinVar made to the variant such as adding HGVS expressions or a rs number. So this date may be different from the date of the “most recent submission” reported at the top of this page.