NM_198576.4:c.6022G>A

Variant names:

Variant summary

Our verdict is Likely benign. The variant received -1 ACMG points: 0P and 1B. BP6

The NM_198576.4(AGRN):c.6022G>A(p.Ala2008Thr) variant causes a missense change involving the alteration of a conserved nucleotide. The variant allele was found at a frequency of 0.0000178 in 1,405,554 control chromosomes in the GnomAD database, with no homozygous occurrence. Variant has been reported in ClinVar as Conflicting classifications of pathogenicity (no stars). Synonymous variant affecting the same amino acid position (i.e. A2008A) has been classified as Likely benign.

Frequency

Genomes: not found (cov: 33)

Exomes 𝑓: 0.000018 ( 0 hom. )

Consequence

AGRN
NM_198576.4 missense

Scores

Clinical Significance

Conflicting classifications of pathogenicity criteria provided, conflicting classifications U:1B:1O:1

Conservation

PhyloP100: 7.88

Publications

0 publications found

Variant links:

Genes affected

AGRN (HGNC:329): (agrin) This gene encodes one of several proteins that are critical in the development of the neuromuscular junction (NMJ), as identified in mouse knock-out studies. The encoded protein contains several laminin G, Kazal type serine protease inhibitor, and epidermal growth factor domains. Additional post-translational modifications occur to add glycosaminoglycans and disulfide bonds. In one family with congenital myasthenic syndrome affecting limb-girdle muscles, a mutation in this gene was found. Alternative splicing results in multiple transcript variants encoding different isoforms. [provided by RefSeq, Mar 2015]

AGRN Gene-Disease associations (from GenCC):

congenital myasthenic syndrome 8
Inheritance: AR Classification: STRONG Submitted by: PanelApp Australia, Labcorp Genetics (formerly Invitae), Genomics England PanelApp
presynaptic congenital myasthenic syndrome
Inheritance: AD Classification: SUPPORTIVE Submitted by: Orphanet
postsynaptic congenital myasthenic syndrome
Inheritance: AR Classification: SUPPORTIVE Submitted by: Orphanet

AGRN links:

ENSG00000242590 (HGNC:):

ENSG00000242590 links:

Genome browser will be placed here

ACMG classification

Classification was made for transcript

Our verdict: Likely_benign. The variant received -1 ACMG points.

BP6

Variant 1-1054865-G-A is Benign according to our data. Variant chr1-1054865-G-A is described in ClinVar as Conflicting_classifications_of_pathogenicity. ClinVar VariationId is 574619.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
AGRN	NM_198576.4 link	c.6022G>A	p.Ala2008Thr	missense_variant	Exon 36 of 36	ENST00000379370.7	NP_940978.2	O00468-6

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
AGRN	ENST00000379370.7 link	c.6022G>A	p.Ala2008Thr	missense_variant	Exon 36 of 36	1	NM_198576.4	ENSP00000368678.2		O00468-6

Frequencies

GnomAD3 genomes

Cov.:

GnomAD2 exomes

AF:

0.0000548

AC:

AN:

164116

AF XY:

0.0000797

show subpopulations

Gnomad AFR exome

AF:

0.00

Gnomad AMR exome

AF:

0.00

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.00

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.00

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.0000178

AC:

AN:

1405554

Hom.:

Cov.:

AF XY:

0.0000274

AC XY:

AN XY:

694474

show subpopulations

African (AFR)

AF:

0.00

AC:

AN:

32190

American (AMR)

AF:

0.00

AC:

AN:

37328

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

25266

East Asian (EAS)

AF:

0.00

AC:

AN:

36656

South Asian (SAS)

AF:

0.000313

AC:

AN:

79828

European-Finnish (FIN)

AF:

0.00

AC:

AN:

47584

Middle Eastern (MID)

AF:

0.00

AC:

AN:

4230

European-Non Finnish (NFE)

AF:

0.00

AC:

AN:

1084294

Other (OTH)

AF:

0.00

AC:

AN:

58178

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.517

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Age Distribution

Exome Het

Variant carriers

<30

30-35

35-40

40-45

45-50

50-55

55-60

60-65

65-70

70-75

75-80

>80

Age

GnomAD4 genome

Cov.:

ExAC

AF:

0.0000350

AC:

ClinVar

Significance: Conflicting classifications of pathogenicity

Submissions summary: Uncertain:1Benign:1Other:1

Revision: criteria provided, conflicting classifications

LINK: link

Submissions by phenotype

Congenital myasthenic syndrome 8

Uncertain:1Benign:1Other:1

Jan 29, 2018

Labcorp Genetics (formerly Invitae), Labcorp

Significance:Uncertain significance

Review Status:criteria provided, single submitter

Collection Method:clinical testing

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. Algorithms developed to predict the effect of missense changes on protein structure and function do not agree on the potential impact of this missense change (SIFT: "Deleterious"; PolyPhen-2: "Probably Damaging"; Align-GVGD: "Class C0"). This variant has not been reported in the literature in individuals with AGRN-related disease. This variant is present in population databases (rs766962416, ExAC 0.03%). This sequence change replaces alanine with threonine at codon 2008 of the AGRN protein (p.Ala2008Thr). The alanine residue is highly conserved and there is a small physicochemical difference between alanine and threonine. -

Sep 20, 2024

3billion

Significance:Likely benign

Review Status:criteria provided, single submitter

Collection Method:clinical testing

The homozygous variant was found in patients diagnosed with another variant in a different gene, with no symptoms related to the gene containing the homozygous variant. -

GenomeConnect, ClinGen

Significance:not provided

Review Status:no classification provided

Collection Method:phenotyping only

Variant interpretted as Uncertain significance and reported on 02-08-2018 by Lab or GTR ID 500031. GenomeConnect assertions are reported exactly as they appear on the patient-provided report from the testing laboratory. GenomeConnect staff make no attempt to reinterpret the clinical significance of the variant. -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.20

BayesDel_addAF

Benign

-0.13

BayesDel_noAF

Benign

-0.10

CADD

Uncertain

(source)

DANN

Uncertain

1.0

Eigen

Uncertain

0.61

Eigen_PC

Uncertain

0.55

FATHMM_MKL

Pathogenic

0.99

LIST_S2

Pathogenic

0.98

D;D

M_CAP

Pathogenic

0.44

MetaRNN

Uncertain

0.43

T;T

MetaSVM

Uncertain

-0.058

PhyloP100

7.9

PrimateAI

Uncertain

0.75

PROVEAN

Uncertain

-2.5

D;.

REVEL

Uncertain

0.50

Sift

Uncertain

0.022

D;.

Sift4G

Pathogenic

0.0

D;D

Vest4

0.32

MVP

0.85

MPC

0.56

ClinPred

0.48

GERP RS

4.9

RBP_binding_hub_radar

0.0

RBP_regulation_power_radar

1.9

gMVP

0.40

Mutation Taster

=52/48

polymorphism

(source)

Splicing

Name

Calibrated prediction

Score

Prediction

SpliceAI score (max)

0.0

Details are displayed if max score is > 0.2

Find out detailed SpliceAI scores and Pangolin per-transcript scores at spliceailookup.broadinstitute.org

Publications

You must be logged in to view publications. This limit was set because tens of millions (!) of queries from AI bots are generated daily.

Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

Publications

ACMG classification

Transcripts

RefSeq

Ensembl

Frequencies

Age Distribution

ClinVar

Submissions by phenotype

Computational scores

Splicing

Publications

Other links and lift over