VCV001794440.3 - ClinVar

NM_003002.4(SDHD):c.266_267dup (p.Ala90fs)

Germline

Classification

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.

(1)

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.

Pathogenic

criteria provided, single submitter

Somatic

No data submitted for somatic clinical impact

Somatic

No data submitted for oncogenicity

Variant Details

Identifiers

NM_003002.4(SDHD):c.266_267dup (p.Ala90fs)

Variation ID: 1794440 Accession: VCV001794440.3

Type and length

Microsatellite, 2 bp

Location

Cytogenetic: 11q23.1 11: 112088960-112088961 (GRCh38) [ NCBI UCSC ] 11: 111959684-111959685 (GRCh37) [ NCBI UCSC ]

Timeline in ClinVar

	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	Nov 29, 2022	Aug 11, 2024	Jun 18, 2024

HGVS

Nucleotide	Protein	Molecular consequence
NM_003002.4:c.266_267dup MANE Select Help Transcripts from the Matched Annotation from the NCBI and EMBL-EBI (MANE) collaboration.	NP_002993.1:p.Ala90fs	frameshift
NM_001276503.2:c.169+988CT[3]		intron variant
NM_001276504.2:c.149_150dup	NP_001263433.1:p.Ala51fs	frameshift
NM_001276506.2:c.266_267dup	NP_001263435.1:p.Ala90fs	frameshift
NR_077060.2:n.299CT[3]		non-coding transcript variant
NC_000011.10:g.112088961CT[3]
NC_000011.9:g.111959685CT[3]
NG_012337.3:g.7115CT[3]
NG_033145.1:g.2835AG[3]
LRG_9:g.7115CT[3]
LRG_9t1:c.266_267dup	LRG_9p1:p.Ala90fs

... more HGVS ... less HGVS

Protein change

A90fs, A51fs

Other names

Canonical SPDI

NC_000011.10:112088960:CTCT:CTCTCT

Functional consequence Help The effect of the variant on RNA or protein function, based on experimental evidence from submitters.

Global minor allele frequency (GMAF) Help The 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.

Allele frequency Help The frequency of the allele represented by this VCV record.

Links

VarSome

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
Gene	OMIM	HI score Help The haploinsufficiency score for the gene, curated by ClinGen’s Dosage Sensitivity Curation task team.	TS score Help 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 Help 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.
SDHD		Sufficient evidence for dosage pathogenicity	No evidence available	GRCh38 GRCh37	657	798

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.
Hereditary cancer-predisposing syndrome	Pathogenic (1)	criteria provided, single submitter	Jun 18, 2024	RCV002428739.3

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.
Pathogenic (Jun 18, 2024)	criteria provided, single submitter (Ambry Variant Classification Scheme 2023) Method: clinical testing	Hereditary cancer-predisposing syndrome Affected status: unknown Allele origin: germline	Ambry Genetics Accession: SCV002743485.3 First in ClinVar: Nov 29, 2022 Last updated: Aug 11, 2024	Comment: The c.266_267dupCT pathogenic mutation, located in coding exon 3 of the SDHD gene, results from a duplication of CT at nucleotide position 266, causing a … (more) The c.266_267dupCT pathogenic mutation, located in coding exon 3 of the SDHD gene, results from a duplication of CT at nucleotide position 266, causing a translational frameshift with a predicted alternate stop codon (p.A90Lfs*46). This alteration occurs at the 3' terminus of theSDHD gene, is not expected to trigger nonsense-mediated mRNA decay, and only impacts the last 43% of the protein. However, premature stop codons are typically deleterious in nature, a significant portion of the protein is affected, and the impacted region is critical for protein function (Ambry internal data). In addition, this variant has been observed in at least one individual with a personal and/or family history that is consistent with SDHD-related paraganglioma-pheochromocytoma syndrome (Ambry internal data). This variant is considered to be rare based on population cohorts in the Genome Aggregation Database (gnomAD). As such, this alteration is interpreted as a disease-causing mutation. (less)

Comment:

The c.266_267dupCT pathogenic mutation, located in coding exon 3 of the SDHD gene, results from a duplication of CT at nucleotide position 266, causing a translational frameshift with a predicted alternate stop codon (p.A90Lfs*46). This alteration occurs at the 3' terminus of theSDHD gene, is not expected to trigger nonsense-mediated mRNA decay, and only impacts the last 43% of the protein. However, premature stop codons are typically deleterious in nature, a significant portion of the protein is affected, and the impacted region is critical for protein function (Ambry internal data). In addition, this variant has been observed in at least one individual with a personal and/or family history that is consistent with SDHD-related paraganglioma-pheochromocytoma syndrome (Ambry internal data). This variant is considered to be rare based on population cohorts in the Genome Aggregation Database (gnomAD). As such, this alteration is interpreted as a disease-causing mutation.

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.

Comment:

Citations for germline classification of this variant

There are no citations for germline classification of this variant in ClinVar. If you know of citations for this variation, please consider submitting that information to ClinVar.

Text-mined citations for this variant ...

Record last updated Aug 11, 2024

ClinVar Genomic variation as it relates to human health

NM_003002.4(SDHD):c.266_267dup (p.Ala90fs)

Variant Details

Genes

Conditions - Germline

Submissions - Germline

Germline Functional Evidence

Citations for germline classification of this variant

Text-mined citations for this variant ...