Genetic Variant NM_020737.3:c.1852G>A (chr6-40392461-C-T) – ACMG Classification: Benign (-8 pts)

Variant summary

Our verdict is Benign. The variant received -8 ACMG points: 0P and 8B. BP4_StrongBS2

The NM_020737.3(LRFN2):c.1852G>A(p.Ala618Thr) variant causes a missense change. The variant allele was found at a frequency of 0.0000389 in 1,567,516 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 15/22 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★). Another variant affecting the same amino acid position, but resulting in a different missense (i.e. A618S) has been classified as Uncertain significance.

Frequency

Genomes: 𝑓 0.000013 ( 0 hom., cov: 32)

Exomes 𝑓: 0.000042 ( 0 hom. )

Consequence

LRFN2
NM_020737.3 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 3.71

Publications

3 publications found

Variant links:

Genes affected

LRFN2 (HGNC:21226): (leucine rich repeat and fibronectin type III domain containing 2) Predicted to be involved in modulation of chemical synaptic transmission and regulation of postsynapse organization. Predicted to be located in plasma membrane. Predicted to be active in Schaffer collateral - CA1 synapse and cell surface. Predicted to be integral component of postsynaptic density membrane. [provided by Alliance of Genome Resources, Apr 2022]

LRFN2 links:

Genome browser will be placed here

ACMG classification

Classification was made for transcript

Our verdict: Benign. The variant received -8 ACMG points.

BP4

Computational evidence support a benign effect (MetaRNN=0.067810744).

BS2

High AC in GnomAdExome4 at 59 AD gene.

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_020737.3. You can select a different transcript below to see updated ACMG assignments.

RefSeq Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	LRFN2	NM_020737.3	MANE Select	c.1852G>A	p.Ala618Thr	missense	Exon 3 of 3	NP_065788.1	Q9ULH4

Ensembl Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	LRFN2	ENST00000338305.7	TSL:1 MANE Select	c.1852G>A	p.Ala618Thr	missense	Exon 3 of 3	ENSP00000345985.6	Q9ULH4
	LRFN2	ENST00000700335.1		c.1852G>A	p.Ala618Thr	missense	Exon 4 of 4	ENSP00000514953.1	A0A8V8TQ63

Frequencies

GnomAD3 genomes

AF:

0.0000131

AC:

AN:

152248

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.0000241

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.00

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:

0.00

Gnomad OTH

AF:

0.000478

GnomAD2 exomes

AF:

0.0000671

AC:

AN:

163930

AF XY:

0.0000335

show subpopulations

Gnomad AFR exome

AF:

0.00

Gnomad AMR exome

AF:

0.000113

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.00

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.0000787

Gnomad OTH exome

AF:

0.000665

GnomAD4 exome

AF:

0.0000417

AC:

AN:

1415150

Hom.:

Cov.:

AF XY:

0.0000500

AC XY:

AN XY:

700296

show subpopulations

African (AFR)

AF:

0.000435

AC:

AN:

32190

American (AMR)

AF:

0.000106

AC:

AN:

37830

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

25376

East Asian (EAS)

AF:

0.00

AC:

AN:

36730

South Asian (SAS)

AF:

0.0000122

AC:

AN:

81830

European-Finnish (FIN)

AF:

0.00

AC:

AN:

48634

Middle Eastern (MID)

AF:

0.000878

AC:

AN:

5698

European-Non Finnish (NFE)

AF:

0.0000294

AC:

AN:

1088268

Other (OTH)

AF:

0.0000512

AC:

AN:

58594

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.477

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

AF:

0.0000131

AC:

AN:

152366

Hom.:

Cov.:

AF XY:

0.0000134

AC XY:

AN XY:

74512

show subpopulations

African (AFR)

AF:

0.0000240

AC:

AN:

41588

American (AMR)

AF:

0.00

AC:

AN:

15312

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

3472

East Asian (EAS)

AF:

0.00

AC:

AN:

5180

South Asian (SAS)

AF:

0.00

AC:

AN:

4834

European-Finnish (FIN)

AF:

0.00

AC:

AN:

10630

Middle Eastern (MID)

AF:

0.00

AC:

AN:

294

European-Non Finnish (NFE)

AF:

0.00

AC:

AN:

68030

Other (OTH)

AF:

0.000473

AC:

AN:

2114

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.600

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:

0.00000725

Hom.:

Bravo

AF:

0.0000378

TwinsUK

AF:

0.000539

AC:

ALSPAC

AF:

0.00

AC:

ExAC

AF:

0.0000519

AC:

ClinVar

ClinVar submissions

Significance:Uncertain significance

Revision:criteria provided, single submitter

View on ClinVar

Pathogenic

VUS

Benign

Condition

not specified (1)

Computational scores

Source: dbNSFP v4.9

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.069

BayesDel_addAF

Benign

-0.43

BayesDel_noAF

Benign

-0.58

CADD

Benign

(source)

DANN

Benign

0.60

DEOGEN2

Benign

0.056

Eigen

Benign

-0.68

Eigen_PC

Benign

-0.59

FATHMM_MKL

Benign

0.20

LIST_S2

Benign

0.73

M_CAP

Benign

0.019

MetaRNN

Benign

0.068

MetaSVM

Benign

-1.0

MutationAssessor

Benign

0.0

PhyloP100

3.7

PrimateAI

Uncertain

0.55

PROVEAN

Benign

-0.060

REVEL

Benign

0.14

Sift

Benign

0.41

Sift4G

Benign

0.54

Polyphen

0.012

Vest4

0.082

MutPred

0.089

Gain of phosphorylation at A618 (P = 0.0262)

MVP

0.56

MPC

0.33

ClinPred

0.059

GERP RS

2.8

Varity_R

0.043

gMVP

0.10

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

Variant Effect in Transcripts

RefSeq Transcripts

Ensembl Transcripts

Frequencies

Age Distribution

Age Distribution

ClinVar

Computational scores

Splicing

Publications

Other links and lift over