rs144164397

Variant names:

Variant summary

Our verdict is Likely benign. Variant got -3 ACMG points: 2P and 5B. PM2BP6BS1

The NM_198576.4(AGRN):c.1570C>T(p.Arg524Trp) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000225 in 1,607,190 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Conflicting classifications of pathogenicity (no stars). Another variant affecting the same amino acid position, but resulting in a different missense (i.e. R524Q) has been classified as Uncertain significance.

Frequency

Genomes: 𝑓 0.0011 ( 0 hom., cov: 33)

Exomes 𝑓: 0.00013 ( 0 hom. )

Consequence

AGRN
NM_198576.4 missense

Scores

Clinical Significance

Conflicting classifications of pathogenicity criteria provided, conflicting classifications U:1B:2

Conservation

PhyloP100: 2.80

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 links:

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Likely_benign. Variant got -3 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

BP6

Variant 1-1043424-C-T is Benign according to our data. Variant chr1-1043424-C-T is described in ClinVar as [Conflicting_classifications_of_pathogenicity]. Clinvar id is 446814.We mark this variant Likely_benign, oryginal submissions are: {Likely_benign=1, Uncertain_significance=1}.

BS1

Variant frequency is greater than expected in population afr. gnomad4_exome allele frequency = 0.000134 (195/1455120) while in subpopulation AFR AF= 0.00377 (126/33438). AF 95% confidence interval is 0.00323. There are 0 homozygotes in gnomad4_exome. There are 88 alleles in male gnomad4_exome subpopulation. Median coverage is 35. This position pass quality control queck.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
AGRN	NM_198576.4 link	c.1570C>T	p.Arg524Trp	missense_variant	Exon 8 of 36	ENST00000379370.7	NP_940978.2	O00468-6

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	UniProt
AGRN	ENST00000379370.7 link	c.1570C>T	p.Arg524Trp	missense_variant	Exon 8 of 36	1	NM_198576.4	ENSP00000368678.2	O00468-6
AGRN	ENST00000651234.1 link	c.1255C>T	p.Arg419Trp	missense_variant	Exon 7 of 38			ENSP00000499046.1	A0A494C1I6
AGRN	ENST00000652369.1 link	c.1255C>T	p.Arg419Trp	missense_variant	Exon 7 of 35			ENSP00000498543.1	A0A494C0G5
AGRN	ENST00000620552.4 link	c.1156C>T	p.Arg386Trp	missense_variant	Exon 8 of 39	5		ENSP00000484607.1	A0A087X208

Frequencies

GnomAD3 genomes

AF:

0.00110

AC:

167

AN:

151952

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.00360

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.000786

Gnomad ASJ

AF:

0.00

Gnomad EAS

AF:

0.00

Gnomad SAS

AF:

0.00

Gnomad FIN

AF:

0.00

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.0000441

Gnomad OTH

AF:

0.00143

GnomAD3 exomes

AF:

0.000277

AC:

AN:

235044

Hom.:

AF XY:

0.000211

AC XY:

AN XY:

128156

show subpopulations

Gnomad AFR exome

AF:

0.00342

Gnomad AMR exome

AF:

0.000240

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.00

Gnomad SAS exome

AF:

0.00

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.0000568

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.000134

AC:

195

AN:

1455120

Hom.:

Cov.:

AF XY:

0.000122

AC XY:

AN XY:

723828

show subpopulations

Gnomad4 AFR exome

AF:

0.00377

Gnomad4 AMR exome

AF:

0.000205

Gnomad4 ASJ exome

AF:

0.00

Gnomad4 EAS exome

AF:

0.0000506

Gnomad4 SAS exome

AF:

0.0000466

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

0.0000333

Gnomad4 OTH exome

AF:

0.000282

GnomAD4 genome

AF:

0.00110

AC:

167

AN:

152070

Hom.:

Cov.:

AF XY:

0.00116

AC XY:

AN XY:

74362

show subpopulations

Gnomad4 AFR

AF:

0.00359

Gnomad4 AMR

AF:

0.000785

Gnomad4 ASJ

AF:

0.00

Gnomad4 EAS

AF:

0.00

Gnomad4 SAS

AF:

0.00

Gnomad4 FIN

AF:

0.00

Gnomad4 NFE

AF:

0.0000441

Gnomad4 OTH

AF:

0.00142

Alfa

AF:

0.000131

Hom.:

Bravo

AF:

0.00130

ESP6500AA

AF:

0.00274

AC:

ESP6500EA

AF:

0.00

AC:

ExAC

AF:

0.000332

AC:

ClinVar

Significance: Conflicting classifications of pathogenicity

Submissions summary: Uncertain:1Benign:2

Revision: criteria provided, conflicting classifications

LINK: link

Submissions by phenotype

not specified

Uncertain:1

Oct 12, 2016

Athena Diagnostics

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

- -

AGRN-related disorder

Benign:1

Jul 20, 2020

PreventionGenetics, part of Exact Sciences

Significance: Likely benign

Review Status: no assertion criteria provided

Collection Method: clinical testing

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). -

Congenital myasthenic syndrome 8

Benign:1

Nov 03, 2024

Labcorp Genetics (formerly Invitae), Labcorp

Significance: Likely benign

Review Status: criteria provided, single submitter

Collection Method: clinical testing

- -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

BayesDel_addAF

Benign

-0.46

BayesDel_noAF

Benign

-0.44

CADD

Uncertain

DANN

Pathogenic

1.0

Eigen

Uncertain

0.46

Eigen_PC

Uncertain

0.32

FATHMM_MKL

Uncertain

0.87

LIST_S2

Benign

0.74

T;T

M_CAP

Benign

0.082

MetaRNN

Benign

0.040

T;T

MetaSVM

Benign

-1.1

MutationAssessor

Pathogenic

3.1

M;.

PrimateAI

Benign

0.30

PROVEAN

Uncertain

-4.3

D;.

REVEL

Benign

0.21

Sift

Uncertain

0.0040

D;.

Sift4G

Pathogenic

0.0010

D;D

Vest4

0.66

MVP

0.81

MPC

0.52

ClinPred

0.16

GERP RS

3.8

RBP_binding_hub_radar

0.0

RBP_regulation_power_radar

1.2

gMVP

0.60

Splicing

Name

Calibrated prediction

Score

Prediction

SpliceAI score (max)

0.32

Details are displayed if max score is > 0.2

DS_DG_spliceai

0.32

Position offset: -2

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

Publications

LitVar

Below is the list of publications found by LitVar. It may be empty.

Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

ACMG classification

Transcripts

RefSeq

Ensembl

Frequencies

ClinVar

Submissions by phenotype

Computational scores

Splicing

Publications

LitVar

Other links and lift over