VCV002071281.4 - ClinVar

NM_020754.4(ARHGAP31):c.1267G>C (p.Ala423Pro)

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.

(4)

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.

Conflicting classifications of pathogenicity
Uncertain significance(2); Likely benign(1)

criteria provided, conflicting classifications

Somatic

No data submitted for somatic clinical impact

Somatic

No data submitted for oncogenicity

Variant Details

Identifiers

NM_020754.4(ARHGAP31):c.1267G>C (p.Ala423Pro)

Variation ID: 2071281 Accession: VCV002071281.4

Type and length

single nucleotide variant, 1 bp

Location

Cytogenetic: 3q13.33 3: 119402019 (GRCh38) [ NCBI UCSC ] 3: 119120866 (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	Feb 8, 2023	Oct 8, 2024	Apr 15, 2024

HGVS

Nucleotide	Protein	Molecular consequence
NM_020754.4:c.1267G>C MANE Select Help Transcripts from the Matched Annotation from the NCBI and EMBL-EBI (MANE) collaboration.	NP_065805.2:p.Ala423Pro	missense
NM_020754.3:c.1267G>C
NC_000003.12:g.119402019G>C
NC_000003.11:g.119120866G>C
NG_007665.2:g.112647G>C

... more HGVS ... less HGVS

Protein change

A423P

Other names

Canonical SPDI

NC_000003.12:119402018:G:C

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

ClinGen: CA2553789 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.
ARHGAP31		No evidence available	No evidence available	GRCh38 GRCh37	497	518

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.
Inborn genetic diseases	Likely benign (1)	criteria provided, single submitter	Feb 25, 2022	RCV002949269.2
not provided	Uncertain significance (1)	criteria provided, single submitter	May 25, 2022	RCV002975457.2
not specified	Uncertain significance (1)	criteria provided, single submitter	Apr 15, 2024	RCV004587399.1
ARHGAP31-related disorder	Likely benign (1)	no assertion criteria provided	Jul 16, 2024	RCV004753603.1

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.
Uncertain significance (May 25, 2022)	criteria provided, single submitter (Invitae Variant Classification Sherloc (09022015)) Method: clinical testing	not provided Affected status: unknown Allele origin: germline	Labcorp Genetics (formerly Invitae), Labcorp Accession: SCV003282699.1 First in ClinVar: Feb 07, 2023 Last updated: Feb 07, 2023	Comment: This sequence change replaces alanine, which is neutral and non-polar, with proline, which is neutral and non-polar, at codon 423 of the ARHGAP31 protein (p.Ala423Pro). … (more) This sequence change replaces alanine, which is neutral and non-polar, with proline, which is neutral and non-polar, at codon 423 of the ARHGAP31 protein (p.Ala423Pro). This variant is present in population databases (rs200205441, gnomAD 0.05%), and has an allele count higher than expected for a pathogenic variant. This variant has not been reported in the literature in individuals affected with ARHGAP31-related conditions. Algorithms developed to predict the effect of missense changes on protein structure and function output the following: SIFT: "Tolerated"; PolyPhen-2: "Benign"; Align-GVGD: "Class C0". The proline amino acid residue is found in multiple mammalian species, which suggests that this missense change does not adversely affect protein function. In summary, the available evidence is currently insufficient to determine the role of this variant in disease. Therefore, it has been classified as a Variant of Uncertain Significance. (less)
Likely benign (Feb 25, 2022)	criteria provided, single submitter (Ambry Variant Classification Scheme 2023) Method: clinical testing	Inborn genetic diseases Affected status: unknown Allele origin: germline	Ambry Genetics Accession: SCV003693179.2 First in ClinVar: Feb 07, 2023 Last updated: May 01, 2024	Comment: This alteration is classified as likely benign based on a combination of the following: seen in unaffected individuals, population frequency, intact protein function, lack of … (more) This alteration is classified as likely benign based on a combination of the following: seen in unaffected individuals, population frequency, intact protein function, lack of segregation with disease, co-occurrence, RNA analysis, in silico models, amino acid conservation, lack of disease association in case-control studies, and/or the mechanism of disease or impacted region is inconsistent with a known cause of pathogenicity. (less)
Uncertain significance (Apr 15, 2024)	criteria provided, single submitter (LabCorp Variant Classification Summary - May 2015) Method: clinical testing	not specified Affected status: unknown Allele origin: germline	Women's Health and Genetics/Laboratory Corporation of America, LabCorp Accession: SCV005076206.1 First in ClinVar: Jul 15, 2024 Last updated: Jul 15, 2024	Comment: Variant summary: ARHGAP31 c.1267G>C (p.Ala423Pro) results in a non-conservative amino acid change in the encoded protein sequence. Four of five in-silico tools predict a benign … (more) Variant summary: ARHGAP31 c.1267G>C (p.Ala423Pro) results in a non-conservative amino acid change in the encoded protein sequence. Four of five in-silico tools predict a benign effect of the variant on protein function. The variant allele was found at a frequency of 4.8e-05 in 1614018 control chromosomes, predominantly at a frequency of 0.00059 within the African or African-American subpopulation in the gnomAD database (v4.0.0). To our knowledge, no occurrence of c.1267G>C in individuals affected with Adams-Oliver Syndrome 1 and no experimental evidence demonstrating its impact on protein function have been reported. ClinVar contains an entry for this variant (Variation ID: 2071281). Based on the evidence outlined above, the variant was classified as uncertain significance. (less)
Likely benign (Jul 16, 2024)	no assertion criteria provided Method: clinical testing	ARHGAP31-related condition Affected status: unknown Allele origin: germline	PreventionGenetics, part of Exact Sciences Accession: SCV005353451.1 First in ClinVar: Oct 08, 2024 Last updated: Oct 08, 2024	Comment: This variant is classified as likely benign based on ACMG/AMP sequence variant interpretation guidelines (Richards et al. 2015 PMID: 25741868, with internal and published modifications).

Comment:

This sequence change replaces alanine, which is neutral and non-polar, with proline, which is neutral and non-polar, at codon 423 of the ARHGAP31 protein (p.Ala423Pro). This variant is present in population databases (rs200205441, gnomAD 0.05%), and has an allele count higher than expected for a pathogenic variant. This variant has not been reported in the literature in individuals affected with ARHGAP31-related conditions. Algorithms developed to predict the effect of missense changes on protein structure and function output the following: SIFT: "Tolerated"; PolyPhen-2: "Benign"; Align-GVGD: "Class C0". The proline amino acid residue is found in multiple mammalian species, which suggests that this missense change does not adversely affect protein function. In summary, the available evidence is currently insufficient to determine the role of this variant in disease. Therefore, it has been classified as a Variant of Uncertain Significance.

Comment:

This alteration is classified as likely benign based on a combination of the following: seen in unaffected individuals, population frequency, intact protein function, lack of segregation with disease, co-occurrence, RNA analysis, in silico models, amino acid conservation, lack of disease association in case-control studies, and/or the mechanism of disease or impacted region is inconsistent with a known cause of pathogenicity.

Comment:

Variant summary: ARHGAP31 c.1267G>C (p.Ala423Pro) results in a non-conservative amino acid change in the encoded protein sequence. Four of five in-silico tools predict a benign effect of the variant on protein function. The variant allele was found at a frequency of 4.8e-05 in 1614018 control chromosomes, predominantly at a frequency of 0.00059 within the African or African-American subpopulation in the gnomAD database (v4.0.0). To our knowledge, no occurrence of c.1267G>C in individuals affected with Adams-Oliver Syndrome 1 and no experimental evidence demonstrating its impact on protein function have been reported. ClinVar contains an entry for this variant (Variation ID: 2071281). Based on the evidence outlined above, the variant was classified as uncertain significance.

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 Oct 13, 2024

ClinVar Genomic variation as it relates to human health

NM_020754.4(ARHGAP31):c.1267G>C (p.Ala423Pro)

Variant Details

Genes

Conditions - Germline

Submissions - Germline

Germline Functional Evidence

Citations for germline classification of this variant

Text-mined citations for this variant ...