chr1-1048025-G-A

Variant names:

Variant summary

Our verdict is Benign. The variant received -13 ACMG points: 0P and 13B. BP4_StrongBP6_Very_StrongBP7

The NM_198576.4(AGRN):c.3765G>A(p.Ala1255Ala) variant causes a synonymous change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00049 in 1,584,542 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 Benign (★★).

Frequency

Genomes: 𝑓 0.0011 ( 0 hom., cov: 32)

Exomes 𝑓: 0.00043 ( 0 hom. )

Consequence

AGRN
NM_198576.4 synonymous

Scores

Clinical Significance

Benign criteria provided, multiple submitters, no conflicts B:3

Conservation

PhyloP100: -4.63

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:

Genome browser will be placed here

ACMG classification

Classification was made for transcript

Our verdict: Benign. The variant received -13 ACMG points.

BP4

Computational evidence support a benign effect (BayesDel_noAF=-0.83).

BP6

Variant 1-1048025-G-A is Benign according to our data. Variant chr1-1048025-G-A is described in ClinVar as Benign. ClinVar VariationId is 585379.Status of the report is criteria_provided_multiple_submitters_no_conflicts, 2 stars.

BP7

Synonymous conserved (PhyloP=-4.63 with no splicing effect.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
AGRN	NM_198576.4 link	c.3765G>A	p.Ala1255Ala	synonymous_variant	Exon 23 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.3765G>A	p.Ala1255Ala	synonymous_variant	Exon 23 of 36	1	NM_198576.4	ENSP00000368678.2		O00468-6

Frequencies

GnomAD3 genomes

AF:

0.00104

AC:

158

AN:

152068

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.00329

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.000458

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:

0.000221

Gnomad OTH

AF:

0.00

GnomAD2 exomes

AF:

0.000527

AC:

106

AN:

201276

AF XY:

0.000524

show subpopulations

Gnomad AFR exome

AF:

0.00374

Gnomad AMR exome

AF:

0.00108

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.00

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.000283

Gnomad OTH exome

AF:

0.000384

GnomAD4 exome

AF:

0.000430

AC:

616

AN:

1432358

Hom.:

Cov.:

AF XY:

0.000419

AC XY:

298

AN XY:

710798

show subpopulations

African (AFR)

AF:

0.00270

AC:

AN:

33000

American (AMR)

AF:

0.000921

AC:

AN:

42368

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

25710

East Asian (EAS)

AF:

0.00

AC:

AN:

38428

South Asian (SAS)

AF:

0.0000240

AC:

AN:

83222

European-Finnish (FIN)

AF:

0.00

AC:

AN:

42724

Middle Eastern (MID)

AF:

0.000174

AC:

AN:

5742

European-Non Finnish (NFE)

AF:

0.000416

AC:

458

AN:

1101726

Other (OTH)

AF:

0.000454

AC:

AN:

59438

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.475

Heterozygous variant carriers

107

142

178

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Age Distribution

Exome Het

Variant carriers

104

130

<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

AF:

0.00105

AC:

160

AN:

152184

Hom.:

Cov.:

AF XY:

0.00108

AC XY:

AN XY:

74404

show subpopulations

African (AFR)

AF:

0.00332

AC:

138

AN:

41504

American (AMR)

AF:

0.000458

AC:

AN:

15298

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

3470

East Asian (EAS)

AF:

0.00

AC:

AN:

5176

South Asian (SAS)

AF:

0.00

AC:

AN:

4832

European-Finnish (FIN)

AF:

0.00

AC:

AN:

10596

Middle Eastern (MID)

AF:

0.00

AC:

AN:

294

European-Non Finnish (NFE)

AF:

0.000221

AC:

AN:

67988

Other (OTH)

AF:

0.00

AC:

AN:

2114

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.492

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Age Distribution

Genome 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

Alfa

AF:

0.000692

Hom.:

Bravo

AF:

0.00136

ClinVar

Significance: Benign

Submissions summary: Benign:3

Revision: criteria provided, multiple submitters, no conflicts

LINK: link

Submissions by phenotype

not provided

Benign:1

Nov 06, 2017

Athena Diagnostics

Significance:Benign

Review Status:criteria provided, single submitter

Collection Method:clinical testing

- -

AGRN-related disorder

Benign:1

Jun 26, 2019

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

Dec 17, 2024

Labcorp Genetics (formerly Invitae), Labcorp

Significance:Benign

Review Status:criteria provided, single submitter

Collection Method:clinical testing

- -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

BayesDel_noAF

Benign

-0.83

CADD

Benign

0.18

(source)

DANN

Benign

0.41

PhyloP100

-4.6

RBP_binding_hub_radar

0.0

RBP_regulation_power_radar

1.1

Mutation Taster

=100/0

polymorphism

(source)

Splicing

Name

Calibrated prediction

Score

Prediction

SpliceAI score (max)

0.020

Details are displayed if max score is > 0.2

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

Publications

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Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

Publications

ACMG classification

Transcripts

RefSeq

Ensembl

Frequencies

Age Distribution

Age Distribution

ClinVar

Submissions by phenotype

Computational scores

Splicing

Publications

Other links and lift over