NM_002087.4:c.1253G>A

Variant names:

Variant summary

Our verdict is Benign. The variant received -9 ACMG points: 0P and 9B. BP4_StrongBP6BS1

The NM_002087.4(GRN):c.1253G>A(p.Arg418Gln) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000174 in 1,613,732 control chromosomes in the GnomAD database, including 1 homozygotes. In-silico tool predicts a benign outcome for this variant. 16/22 in silico tools predict 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. R418P) has been classified as Uncertain significance.

Frequency

Genomes: 𝑓 0.00021 ( 0 hom., cov: 33)

Exomes 𝑓: 0.00017 ( 1 hom. )

Consequence

GRN
NM_002087.4 missense

Scores

Clinical Significance

Conflicting classifications of pathogenicity criteria provided, conflicting classifications U:2B:4O:1

Conservation

PhyloP100: -0.992

Publications

5 publications found

Variant links:

Genes affected

GRN (HGNC:4601): (granulin precursor) Granulins are a family of secreted, glycosylated peptides that are cleaved from a single precursor protein with 7.5 repeats of a highly conserved 12-cysteine granulin/epithelin motif. The 88 kDa precursor protein, progranulin, is also called proepithelin and PC cell-derived growth factor. Cleavage of the signal peptide produces mature granulin which can be further cleaved into a variety of active, 6 kDa peptides. These smaller cleavage products are named granulin A, granulin B, granulin C, etc. Epithelins 1 and 2 are synonymous with granulins A and B, respectively. Both the peptides and intact granulin protein regulate cell growth. However, different members of the granulin protein family may act as inhibitors, stimulators, or have dual actions on cell growth. Granulin family members are important in normal development, wound healing, and tumorigenesis. [provided by RefSeq, Jul 2008]

GRN Gene-Disease associations (from GenCC):

frontotemporal dementia and/or amyotrophic lateral sclerosis
Inheritance: AD Classification: DEFINITIVE Submitted by: ClinGen
neuronal ceroid lipofuscinosis
Inheritance: AR Classification: DEFINITIVE Submitted by: ClinGen
GRN-related frontotemporal lobar degeneration with Tdp43 inclusions
Inheritance: AD Classification: STRONG Submitted by: Labcorp Genetics (formerly Invitae), Genomics England PanelApp
neuronal ceroid lipofuscinosis 11
Inheritance: AR Classification: STRONG, MODERATE, SUPPORTIVE Submitted by: Labcorp Genetics (formerly Invitae), Genomics England PanelApp, Ambry Genetics, G2P, Orphanet

GRN links:

Genome browser will be placed here

ACMG classification

Classification was made for transcript

Our verdict: Benign. The variant received -9 ACMG points.

BP4

Computational evidence support a benign effect (MetaRNN=0.021225005).

BP6

Variant 17-44352088-G-A is Benign according to our data. Variant chr17-44352088-G-A is described in ClinVar as Conflicting_classifications_of_pathogenicity. ClinVar VariationId is 98178.

BS1

Variant frequency is greater than expected in population amr. GnomAd4 allele frequency = 0.00021 (32/152074) while in subpopulation AMR AF = 0.000327 (5/15278). AF 95% confidence interval is 0.000129. There are 0 homozygotes in GnomAd4. There are 14 alleles in the male GnomAd4 subpopulation. Median coverage is 33. This position passed quality control check.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
GRN	NM_002087.4 link	c.1253G>A	p.Arg418Gln	missense_variant	Exon 11 of 13	ENST00000053867.8	NP_002078.1	P28799-1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	UniProt
GRN	ENST00000053867.8 link	c.1253G>A	p.Arg418Gln	missense_variant	Exon 11 of 13	1	NM_002087.4	ENSP00000053867.2	P28799-1
GRN	ENST00000589265.5 link	c.782G>A	p.Arg261Gln	missense_variant	Exon 7 of 9	5		ENSP00000467616.1	K7EQ05
GRN	ENST00000586443.1 link	c.692G>A	p.Arg231Gln	missense_variant	Exon 6 of 7	3		ENSP00000465673.1	K7EKL3
GRN	ENST00000586242.1 link	c.-116G>A		upstream_gene_variant		3		ENSP00000467837.1	K7EQI0

Frequencies

GnomAD3 genomes

AF:

0.000210

AC:

AN:

152074

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.000121

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.000327

Gnomad ASJ

AF:

0.00317

Gnomad EAS

AF:

0.00

Gnomad SAS

AF:

0.00

Gnomad FIN

AF:

0.00

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.000162

Gnomad OTH

AF:

0.00

GnomAD2 exomes

AF:

0.000247

AC:

AN:

251182

AF XY:

0.000221

show subpopulations

Gnomad AFR exome

AF:

0.0000616

Gnomad AMR exome

AF:

0.000260

Gnomad ASJ exome

AF:

0.00258

Gnomad EAS exome

AF:

0.00

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.000185

Gnomad OTH exome

AF:

0.000816

GnomAD4 exome

AF:

0.000170

AC:

249

AN:

1461658

Hom.:

Cov.:

AF XY:

0.000176

AC XY:

128

AN XY:

727170

show subpopulations

African (AFR)

AF:

0.0000299

AC:

AN:

33480

American (AMR)

AF:

0.000291

AC:

AN:

44720

Ashkenazi Jewish (ASJ)

AF:

0.00287

AC:

AN:

26136

East Asian (EAS)

AF:

0.00

AC:

AN:

39700

South Asian (SAS)

AF:

0.0000116

AC:

AN:

86254

European-Finnish (FIN)

AF:

0.00

AC:

AN:

53212

Middle Eastern (MID)

AF:

0.000693

AC:

AN:

5768

European-Non Finnish (NFE)

AF:

0.000112

AC:

125

AN:

1111996

Other (OTH)

AF:

0.000497

AC:

AN:

60392

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.485

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Age Distribution

Exome Het

Exome Hom

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

AF:

0.000210

AC:

AN:

152074

Hom.:

Cov.:

AF XY:

0.000188

AC XY:

AN XY:

74284

show subpopulations

African (AFR)

AF:

0.000121

AC:

AN:

41412

American (AMR)

AF:

0.000327

AC:

AN:

15278

Ashkenazi Jewish (ASJ)

AF:

0.00317

AC:

AN:

3470

East Asian (EAS)

AF:

0.00

AC:

AN:

5184

South Asian (SAS)

AF:

0.00

AC:

AN:

4824

European-Finnish (FIN)

AF:

0.00

AC:

AN:

10624

Middle Eastern (MID)

AF:

0.00

AC:

AN:

316

European-Non Finnish (NFE)

AF:

0.000162

AC:

AN:

67968

Other (OTH)

AF:

0.00

AC:

AN:

2088

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.495

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:

0.000373

Hom.:

Bravo

AF:

0.000196

ESP6500AA

AF:

0.00

AC:

ESP6500EA

AF:

0.000233

AC:

ExAC

AF:

0.000206

AC:

EpiCase

AF:

0.000218

EpiControl

AF:

0.000237

ClinVar

Significance: Conflicting classifications of pathogenicity

Submissions summary: Uncertain:2Benign:4Other:1

Revision: criteria provided, conflicting classifications

LINK: link

Submissions by phenotype

GRN-related frontotemporal lobar degeneration with Tdp43 inclusions;C3539123:Neuronal ceroid lipofuscinosis 11

Uncertain:1Benign:1

Jan 06, 2025

Labcorp Genetics (formerly Invitae), Labcorp

Significance:Likely benign

Review Status:criteria provided, single submitter

Collection Method:clinical testing

- -

Oct 31, 2018

Fulgent Genetics, Fulgent Genetics

Significance:Uncertain significance

Review Status:criteria provided, single submitter

Collection Method:clinical testing

- -

not provided

Uncertain:1Other:1

Jul 20, 2016

Eurofins Ntd Llc (ga)

Significance:Uncertain significance

Review Status:criteria provided, single submitter

Collection Method:clinical testing

- -

VIB Department of Molecular Genetics, University of Antwerp

Significance:not provided

Review Status:no classification provided

Collection Method:literature only

- -

not specified

Benign:1

Feb 10, 2021

Athena Diagnostics

Significance:Benign

Review Status:criteria provided, single submitter

Collection Method:clinical testing

- -

Inborn genetic diseases

Benign:1

Mar 25, 2022

Ambry Genetics

Significance:Likely benign

Review Status:criteria provided, single submitter

Collection Method:clinical testing

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. -

GRN-related frontotemporal lobar degeneration with Tdp43 inclusions

Benign:1

Apr 28, 2017

Illumina Laboratory Services, Illumina

Significance:Likely benign

Review Status:criteria provided, single submitter

Collection Method:clinical testing

This variant was observed as part of a predisposition screen in an ostensibly healthy population. A literature search was performed for the gene, cDNA change, and amino acid change (where applicable). Publications were found based on this search. The evidence from the literature, in combination with allele frequency data from public databases where available, was sufficient to determine this variant is unlikely to cause disease. Therefore, this variant is classified as likely benign. -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.076

BayesDel_addAF

Benign

-0.37

BayesDel_noAF

Benign

-0.47

CADD

Benign

0.84

(source)

DANN

Uncertain

0.99

DEOGEN2

Benign

0.13

T;T

Eigen

Benign

-0.82

Eigen_PC

Benign

-0.97

FATHMM_MKL

Benign

0.046

LIST_S2

Benign

0.53

T;T

M_CAP

Benign

0.053

MetaRNN

Benign

0.021

T;T

MetaSVM

Benign

-0.86

MutationAssessor

Benign

1.4

L;.

PhyloP100

-0.99

PrimateAI

Benign

0.22

PROVEAN

Benign

-1.1

N;.

REVEL

Benign

0.13

Sift

Benign

0.039

D;.

Sift4G

Benign

0.34

T;T

Polyphen

0.94

P;.

Vest4

0.17

MVP

0.71

MPC

0.28

ClinPred

0.019

GERP RS

-2.2

PromoterAI

0.0064

Neutral

(source)

Varity_R

0.062

gMVP

0.69

Mutation Taster

=91/9

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

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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