Genetic Variant LYNX1:p.Cys39Tyr (chr8-142775631-C-T) – ACMG Classification: Uncertain_significance (4 pts)

Variant summary

Our verdict is Uncertain significance. Variant got 4 ACMG points: 4P and 0B. PM2PP3_Moderate

The NM_177477.4(LYNX1):c.116G>A(p.Cys39Tyr) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00000437 in 1,602,400 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a pathogenic outcome for this variant. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar. Another variant affecting the same amino acid position, but resulting in a different missense (i.e. C39S) has been classified as Uncertain significance.

Frequency

Genomes: 𝑓 0.0000066 ( 0 hom., cov: 34)

Exomes 𝑓: 0.0000041 ( 0 hom. )

Consequence

LYNX1
NM_177477.4 missense

Scores

Clinical Significance

Not reported in ClinVar

Conservation

PhyloP100: 1.28

Variant links:

Genes affected

LYNX1 (HGNC:29604): (Ly6/neurotoxin 1) This gene encodes a GPI-anchored, cell membrane bound member of the Ly6/uPAR (LU) superfamily of proteins containing the unique three-finger LU domain. This protein interacts with nicotinic acetylcholine receptors (nAChRs), and is thought to function as a modulator of nAChR activity to prevent excessive excitation. Alternatively spliced transcript variants have been found for this gene. Read-through transcription between this gene and the neighboring downstream gene (SLURP2) generates naturally-occurring transcripts (LYNX1-SLURP2) that encode a fusion protein comprised of sequence sharing identity with each individual gene product. [provided by RefSeq, Sep 2017]

LYNX1 links:

LYNX1-SLURP2 (HGNC:52291): (LYNX1-SLURP2 readthrough) This locus represents naturally occurring read-through transcription between the neighboring LYNX1 and SLURP2 genes. The readthrough transcript encodes a fusion protein comprised of sequence sharing identity with each individual gene product. The significance of this read-through transcription and the function of the resulting protein product have not yet been determined. [provided by RefSeq, Sep 2017]

LYNX1-SLURP2 links:

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Uncertain_significance. Variant got 4 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

PP3

MetaRNN computational evidence supports a deleterious effect, 0.873

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
LYNX1	NM_177477.4 link	c.116G>A	p.Cys39Tyr	missense_variant	Exon 3 of 4	ENST00000652477.1	NP_803430.1	P0DP58-1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
LYNX1	ENST00000652477.1 link	c.116G>A	p.Cys39Tyr	missense_variant	Exon 3 of 4		NM_177477.4	ENSP00000498325.1		P0DP58-1
LYNX1-SLURP2	ENST00000615007.4 link	c.116G>A	p.Cys39Tyr	missense_variant	Exon 3 of 5	1		ENSP00000479586.1

Frequencies

GnomAD3 genomes

AF:

0.00000657

AC:

AN:

152226

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:

0.00

GnomAD3 exomes

AF:

0.00000876

AC:

AN:

228228

Hom.:

AF XY:

0.00000811

AC XY:

AN XY:

123294

show subpopulations

Gnomad AFR exome

AF:

0.000142

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:

0.00

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.00000414

AC:

AN:

1450174

Hom.:

Cov.:

AF XY:

0.00000278

AC XY:

AN XY:

720140

show subpopulations

Gnomad4 AFR exome

AF:

0.000180

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:

0.00

Gnomad4 OTH exome

AF:

0.00

GnomAD4 genome

AF:

0.00000657

AC:

AN:

152226

Hom.:

Cov.:

AF XY:

0.0000134

AC XY:

AN XY:

74362

show subpopulations

Gnomad4 AFR

AF:

0.0000241

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:

0.00

Gnomad4 OTH

AF:

0.00

Bravo

AF:

0.00000378

ExAC

AF:

0.00000825

AC:

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Pathogenic

0.97

BayesDel_addAF

Pathogenic

0.39

BayesDel_noAF

Pathogenic

0.32

CADD

Pathogenic

DANN

Uncertain

0.99

DEOGEN2

Benign

0.27

T;.;.;.;.;.;.

Eigen

Uncertain

0.57

Eigen_PC

Uncertain

0.48

FATHMM_MKL

Uncertain

0.93

LIST_S2

Benign

0.78

T;T;T;.;.;T;T

M_CAP

Pathogenic

0.44

MetaRNN

Pathogenic

0.87

D;D;D;D;D;D;D

MetaSVM

Uncertain

0.72

MutationAssessor

Benign

0.69

.;.;N;N;N;.;.

PrimateAI

Pathogenic

0.79

PROVEAN

Pathogenic

-11

D;.;.;.;.;.;.

REVEL

Pathogenic

0.69

Sift

Pathogenic

0.0

D;.;.;.;.;.;.

Sift4G

Pathogenic

0.0

D;D;D;D;D;D;D

Vest4

0.74

MutPred

0.44

Loss of catalytic residue at M37 (P = 0.001);Loss of catalytic residue at M37 (P = 0.001);Loss of catalytic residue at M37 (P = 0.001);Loss of catalytic residue at M37 (P = 0.001);Loss of catalytic residue at M37 (P = 0.001);Loss of catalytic residue at M37 (P = 0.001);Loss of catalytic residue at M37 (P = 0.001);

MVP

0.83

ClinPred

0.98

GERP RS

4.8

Varity_R

0.95

gMVP

1.0

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

Computational scores

Splicing

Publications

LitVar

Other links and lift over