Genetic Variant LRFN2:p.Ser693Leu (chr6-40392235-G-A) – ACMG Classification: Likely_benign (-5 pts)

Variant summary

Our verdict is Likely benign. Variant got -5 ACMG points: 0P and 5B. BP4BS2

The NM_020737.3(LRFN2):c.2078C>T(p.Ser693Leu) variant causes a missense change involving the alteration of a conserved nucleotide. The variant allele was found at a frequency of 0.0000229 in 1,573,208 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 Uncertain significance (★).

Frequency

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

Exomes 𝑓: 0.000024 ( 0 hom. )

Consequence

LRFN2
NM_020737.3 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 9.90

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 made for transcript

Verdict is Likely_benign. Variant got -5 ACMG points.

BP4

Computational evidence support a benign effect (MetaRNN=0.2783034).

BS2

High AC in GnomAdExome4 at 34 AD gene.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
LRFN2	NM_020737.3 link	c.2078C>T	p.Ser693Leu	missense_variant	Exon 3 of 3	ENST00000338305.7	NP_065788.1	Q9ULH4
LRFN2	XM_011514762.3 link	c.2078C>T	p.Ser693Leu	missense_variant	Exon 3 of 3		XP_011513064.1	Q9ULH4

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
LRFN2	ENST00000338305.7 link	c.2078C>T	p.Ser693Leu	missense_variant	Exon 3 of 3	1	NM_020737.3	ENSP00000345985.6		Q9ULH4
LRFN2	ENST00000700335.1 link	c.*31C>T		downstream_gene_variant				ENSP00000514953.1		A0A8V8TQ63

Frequencies

GnomAD3 genomes

AF:

0.0000131

AC:

AN:

152162

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.00

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:

0.0000294

Gnomad OTH

AF:

0.00

GnomAD3 exomes

AF:

0.0000110

AC:

AN:

182634

Hom.:

AF XY:

0.0000100

AC XY:

AN XY:

99766

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 SAS exome

AF:

0.00

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.0000256

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.0000239

AC:

AN:

1421046

Hom.:

Cov.:

AF XY:

0.0000256

AC XY:

AN XY:

703746

show subpopulations

Gnomad4 AFR exome

AF:

0.00

Gnomad4 AMR exome

AF:

0.00

Gnomad4 ASJ exome

AF:

0.00

Gnomad4 EAS exome

AF:

0.00

Gnomad4 SAS exome

AF:

0.00

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

0.0000311

Gnomad4 OTH exome

AF:

0.00

GnomAD4 genome

AF:

0.0000131

AC:

AN:

152162

Hom.:

Cov.:

AF XY:

0.00

AC XY:

AN XY:

74324

show subpopulations

Gnomad4 AFR

AF:

0.00

Gnomad4 AMR

AF:

0.00

Gnomad4 ASJ

AF:

0.00

Gnomad4 EAS

AF:

0.00

Gnomad4 SAS

AF:

0.00

Gnomad4 FIN

AF:

0.00

Gnomad4 NFE

AF:

0.0000294

Gnomad4 OTH

AF:

0.00

Bravo

AF:

0.0000113

ESP6500AA

AF:

0.00

AC:

ESP6500EA

AF:

0.000119

AC:

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

not specified

Uncertain:1

Aug 01, 2024

Ambry Genetics

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

The c.2078C>T (p.S693L) alteration is located in exon 3 (coding exon 2) of the LRFN2 gene. This alteration results from a C to T substitution at nucleotide position 2078, causing the serine (S) at amino acid position 693 to be replaced by a leucine (L). Based on insufficient or conflicting evidence, the clinical significance of this alteration remains unclear. -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.15

BayesDel_addAF

Uncertain

0.046

BayesDel_noAF

Benign

-0.17

CADD

Uncertain

DANN

Uncertain

1.0

DEOGEN2

Benign

0.083

Eigen

Uncertain

0.32

Eigen_PC

Uncertain

0.43

FATHMM_MKL

Pathogenic

1.0

LIST_S2

Uncertain

0.87

M_CAP

Benign

0.037

MetaRNN

Benign

0.28

MetaSVM

Benign

-1.1

MutationAssessor

Benign

1.2

PrimateAI

Pathogenic

0.87

PROVEAN

Benign

-0.77

REVEL

Benign

0.18

Sift

Benign

0.071

Sift4G

Benign

0.15

Polyphen

0.92

Vest4

0.42

MVP

0.79

MPC

0.32

ClinPred

0.73

GERP RS

4.7

Varity_R

0.20

gMVP

0.17

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

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