NM_015338.6(ASXL1):c.1957G>A (p.Gly653Arg) AND not provided

Germline classification:: Conflicting interpretations of pathogenicity (2 submissions)
Last evaluated:: Sep 29, 2023
Review status:: criteria provided, conflicting classifications

Somatic classification of clinical impact:: None
Review status:: (0/4) 0 stars out of maximum of 4 stars
no assertion criteria provided

Somatic classification of oncogenicity:: None
Review status:: (0/4) 0 stars out of maximum of 4 stars
no assertion criteria provided

Record status:: current
Accession:: RCV001530708.9

Allele description [Variation Report for NM_015338.6(ASXL1):c.1957G>A (p.Gly653Arg)]

NM_015338.6(ASXL1):c.1957G>A (p.Gly653Arg)

Gene:

ASXL1:ASXL transcriptional regulator 1 [Gene - OMIM - HGNC]

Variant type:

single nucleotide variant

Cytogenetic location:

20q11.21

Genomic location:

Preferred name:

NM_015338.6(ASXL1):c.1957G>A (p.Gly653Arg)

HGVS:

NC_000020.11:g.32434669G>A
NG_027868.1:g.81326G>A
NM_001363734.1:c.1774G>A
NM_015338.6:c.1957G>AMANE SELECT
NP_001350663.1:p.Gly592Arg
NP_056153.2:p.Gly653Arg
LRG_630t1:c.1957G>A
LRG_630:g.81326G>A
NC_000020.10:g.31022472G>A
NM_015338.5:c.1957G>A

Protein change:

G592R

Links:

dbSNP: rs537734228

NCBI 1000 Genomes Browser:

rs537734228

Molecular consequence:

NM_001363734.1:c.1774G>A - missense variant - [Sequence Ontology: SO:0001583]
NM_015338.6:c.1957G>A - missense variant - [Sequence Ontology: SO:0001583]

Condition(s)

Synonyms:: none provided
Identifiers:: MedGen: C3661900

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Submission Accession	Submitter	Review Status (Assertion method)	Clinical Significance (Last evaluated)	Origin	Method	Citations
SCV001745603	GeneDx	criteria provided, single submitter (GeneDx Variant Classification Process June 2021)	Benign (Nov 9, 2020)	germline	clinical testing	Citation Link,
SCV002215386	Labcorp Genetics (formerly Invitae), Labcorp	criteria provided, single submitter (Invitae Variant Classification Sherloc (09022015))	Uncertain significance (Sep 29, 2023)	germline	clinical testing	PubMed (1) [See all records that cite this PMID]

Submission Accession

Submitter

Review Status
(Assertion method)

Clinical Significance
(Last evaluated)

Origin

Method

Citations

SCV001745603

GeneDx

criteria provided, single submitter

(GeneDx Variant Classification Process June 2021)

Benign
(Nov 9, 2020)

germline

clinical testing

Citation Link,

SCV002215386

Labcorp Genetics (formerly Invitae), Labcorp

criteria provided, single submitter

(Invitae Variant Classification Sherloc (09022015))

Uncertain significance
(Sep 29, 2023)

germline

clinical testing

PubMed (1)
[See all records that cite this PMID]

Help

Summary from all submissions

Ethnicity	Origin	Affected	Individuals	Families	Chromosomes tested	Number Tested	Family history	Method
not provided	germline	yes	not provided	not provided	not provided	not provided	not provided	clinical testing
not provided	germline	unknown	not provided	not provided	not provided	not provided	not provided	clinical testing

Citations

PubMed

Sherloc: a comprehensive refinement of the ACMG-AMP variant classification criteria.

Nykamp K, Anderson M, Powers M, Garcia J, Herrera B, Ho YY, Kobayashi Y, Patil N, Thusberg J, Westbrook M; Invitae Clinical Genomics Group, Topper S.

Genet Med. 2017 Oct;19(10):1105-1117. doi: 10.1038/gim.2017.37. Epub 2017 May 11. Erratum in: Genet Med. 2020 Jan;22(1):240. doi: 10.1038/s41436-019-0624-9.

PubMed [citation]

PMID:: 28492532
PMCID:: PMC5632818

Details of each submission

From GeneDx, SCV001745603.1

#	Ethnicity	Individuals	Chromosomes Tested	Family History	Method	Citations
1	not provided	not provided	not provided	not provided	clinical testing	not provided

#	Sample				Method		Observation
#	Origin	Affected	Number tested	Tissue	Purpose	Method	Individuals	Allele frequency	Families	Co-occurrences
1	germline	yes	not provided	not provided	not provided		not provided	not provided	not provided	not provided

From Labcorp Genetics (formerly Invitae), Labcorp, SCV002215386.3

#	Ethnicity	Individuals	Chromosomes Tested	Family History	Method	Citations
1	not provided	not provided	not provided	not provided	clinical testing	PubMed (1)

Description

This sequence change replaces glycine, which is neutral and non-polar, with arginine, which is basic and polar, at codon 653 of the ASXL1 protein (p.Gly653Arg). This variant is present in population databases (rs537734228, gnomAD 0.06%), 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 ASXL1-related conditions. ClinVar contains an entry for this variant (Variation ID: 1175529). Algorithms developed to predict the effect of missense changes on protein structure and function output the following: SIFT: "Not Available"; PolyPhen-2: "Benign"; Align-GVGD: "Not Available". The arginine 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.

#	Sample				Method		Observation
#	Origin	Affected	Number tested	Tissue	Purpose	Method	Individuals	Allele frequency	Families	Co-occurrences
1	germline	unknown	not provided	not provided	not provided		not provided	not provided	not provided	not provided

Last Updated: Sep 29, 2024

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