chr3-46521523-T-A

Variant names:

Variant summary

Our verdict is Uncertain significance. The variant received 4 ACMG points: 4P and 0B. PM2PP3_Moderate

The NM_024512.5(LRRC2):c.1065A>T(p.Arg355Ser) variant causes a missense, splice region change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0000908 in 1,597,622 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 2/3 splice prediction tools predicting alterations to normal splicing. Variant has been reported in ClinVar as Uncertain significance (★).

Frequency

Genomes: 𝑓 0.000085 ( 0 hom., cov: 32)

Exomes 𝑓: 0.000091 ( 0 hom. )

Consequence

LRRC2
NM_024512.5 missense, splice_region

Scores

Splicing: ADA: 0.9999

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 2.02

Publications

0 publications found

Variant links:

Genes affected

LRRC2 (HGNC:14676): (leucine rich repeat containing 2) This gene encodes a member of the leucine-rich repeat-containing family of proteins, which function in diverse biological pathways. This family member may possibly be a nuclear protein. Similarity to the RAS suppressor protein, as well as expression down-regulation observed in tumor cells, suggests that it may function as a tumor suppressor. The gene is located in the chromosome 3 common eliminated region 1 (C3CER1), a 1.4 Mb region that is commonly deleted in diverse tumors. A related pseudogene has been identified on chromosome 2. [provided by RefSeq, Sep 2011]

LRRC2 links:

Genome browser will be placed here

ACMG classification

Classification was made for transcript

Our verdict: Uncertain_significance. The variant received 4 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

PP3

Splicing predictors support a deleterious effect. Scorers claiming Pathogenic: dbscSNV1_ADA, dbscSNV1_RF. No scorers claiming Uncertain. Scorers claiming Benign: max_spliceai.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
LRRC2	NM_024512.5 link	c.1065A>T	p.Arg355Ser	missense_variant, splice_region_variant	Exon 8 of 9	ENST00000395905.8	NP_078788.2	Q9BYS8

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	UniProt
LRRC2	ENST00000395905.8 link	c.1065A>T	p.Arg355Ser	missense_variant, splice_region_variant	Exon 8 of 9	1	NM_024512.5	ENSP00000379241.3	Q9BYS8
LRRC2	ENST00000296144.3 link	c.1065A>T	p.Arg355Ser	missense_variant, splice_region_variant	Exon 8 of 9	1		ENSP00000296144.3	Q9BYS8
LRRC2	ENST00000682605.1 link	c.1065A>T	p.Arg355Ser	missense_variant, splice_region_variant	Exon 8 of 9			ENSP00000507018.1	Q9BYS8

Frequencies

GnomAD3 genomes

AF:

0.0000854

AC:

AN:

152230

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.0000482

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:

0.0000941

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.000147

Gnomad OTH

AF:

0.00

GnomAD2 exomes

AF:

0.0000385

AC:

AN:

233806

AF XY:

0.0000316

show subpopulations

Gnomad AFR exome

AF:

0.000129

Gnomad AMR exome

AF:

0.00

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.00

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.0000670

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.0000913

AC:

132

AN:

1445274

Hom.:

Cov.:

AF XY:

0.0000849

AC XY:

AN XY:

718670

show subpopulations

African (AFR)

AF:

0.0000606

AC:

AN:

33004

American (AMR)

AF:

0.00

AC:

AN:

42682

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

25714

East Asian (EAS)

AF:

0.00

AC:

AN:

39544

South Asian (SAS)

AF:

0.00

AC:

AN:

84460

European-Finnish (FIN)

AF:

0.0000195

AC:

AN:

51212

Middle Eastern (MID)

AF:

0.000176

AC:

AN:

5678

European-Non Finnish (NFE)

AF:

0.000107

AC:

118

AN:

1103274

Other (OTH)

AF:

0.000167

AC:

AN:

59706

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.467

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

GnomAD4 genome

AF:

0.0000853

AC:

AN:

152348

Hom.:

Cov.:

AF XY:

0.0000403

AC XY:

AN XY:

74506

show subpopulations

African (AFR)

AF:

0.0000481

AC:

AN:

41586

American (AMR)

AF:

0.00

AC:

AN:

15298

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

3472

East Asian (EAS)

AF:

0.00

AC:

AN:

5190

South Asian (SAS)

AF:

0.00

AC:

AN:

4826

European-Finnish (FIN)

AF:

0.0000941

AC:

AN:

10622

Middle Eastern (MID)

AF:

0.00

AC:

AN:

294

European-Non Finnish (NFE)

AF:

0.000147

AC:

AN:

68034

Other (OTH)

AF:

0.00

AC:

AN:

2114

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.487

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Alfa

AF:

0.000134

Hom.:

Bravo

AF:

0.0000567

ExAC

AF:

0.0000412

AC:

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

not specified

Uncertain:1

Jan 31, 2024

Ambry Genetics

Significance:Uncertain significance

Review Status:criteria provided, single submitter

Collection Method:clinical testing

The c.1065A>T (p.R355S) alteration is located in exon 8 (coding exon 7) of the LRRC2 gene. This alteration results from a A to T substitution at nucleotide position 1065, causing the arginine (R) at amino acid position 355 to be replaced by a serine (S). 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

Pathogenic

0.94

BayesDel_addAF

Benign

-0.035

BayesDel_noAF

Uncertain

-0.040

CADD

Pathogenic

(source)

DANN

Uncertain

1.0

DEOGEN2

Benign

0.0027

T;T

Eigen

Uncertain

0.24

Eigen_PC

Uncertain

0.27

FATHMM_MKL

Uncertain

0.89

LIST_S2

Benign

0.83

.;T

M_CAP

Benign

0.024

MetaRNN

Benign

0.29

T;T

MetaSVM

Benign

-1.1

MutationAssessor

Uncertain

2.7

M;M

PhyloP100

2.0

PrimateAI

Uncertain

0.61

PROVEAN

Benign

-1.5

N;N

REVEL

Benign

0.22

Sift

Uncertain

0.0040

D;D

Sift4G

Uncertain

0.0090

D;D

Polyphen

1.0

D;D

Vest4

0.80

MutPred

0.45

Gain of glycosylation at S357 (P = 0.0111);Gain of glycosylation at S357 (P = 0.0111);

MVP

0.35

MPC

0.97

ClinPred

0.38

GERP RS

4.5

Varity_R

0.28

gMVP

0.68

Mutation Taster

=26/74

disease causing

(source)

Splicing

Name

Calibrated prediction

Score

Prediction

dbscSNV1_ADA

Pathogenic

1.0

dbscSNV1_RF

Pathogenic

1.0

SpliceAI score (max)

0.010

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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chr3-46521523-T-A

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