chr1-225937469-G-A

Variant names:

Variant summary

Our verdict is Benign. The variant received -9 ACMG points: 0P and 9B. BP4_StrongBP6BS2

The NM_003240.5(LEFTY2):c.1073C>T(p.Ala358Val) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000146 in 1,613,952 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 Conflicting classifications of pathogenicity (no stars). Synonymous variant affecting the same amino acid position (i.e. A358A) has been classified as Likely benign.

Frequency

Genomes: 𝑓 0.00016 ( 0 hom., cov: 32)

Exomes 𝑓: 0.00014 ( 0 hom. )

Consequence

LEFTY2
NM_003240.5 missense

Scores

Clinical Significance

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

Conservation

PhyloP100: 1.83

Publications

4 publications found

Variant links:

Genes affected

LEFTY2 (HGNC:3122): (left-right determination factor 2) This gene encodes a secreted ligand of the TGF-beta (transforming growth factor-beta) superfamily of proteins. Ligands of this family bind various TGF-beta receptors leading to recruitment and activation of SMAD family transcription factors that regulate gene expression. The encoded preproprotein is proteolytically processed to generate the mature protein, which plays a role in left-right asymmetry determination of organ systems during development. The protein may also play a role in endometrial bleeding. Mutations in this gene have been associated with left-right axis malformations, particularly in the heart and lungs. Some types of infertility have been associated with dysregulated expression of this gene in the endometrium. This gene is closely linked to both a related family member and a related pseudogene. This gene encodes multiple isoforms that may undergo similar proteolytic processing. [provided by RefSeq, Aug 2016]

LEFTY2 Gene-Disease associations (from GenCC):

visceral heterotaxy
Inheritance: AD Classification: LIMITED Submitted by: G2P
congenital heart disease
Inheritance: AD Classification: NO_KNOWN Submitted by: ClinGen

LEFTY2 links:

ENSG00000248322 (HGNC:):

ENSG00000248322 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=0.01360929).

BP6

Variant 1-225937469-G-A is Benign according to our data. Variant chr1-225937469-G-A is described in ClinVar as Conflicting_classifications_of_pathogenicity. ClinVar VariationId is 295967.

BS2

High AC in GnomAd4 at 25 AD gene.

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_003240.5. 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
	LEFTY2	NM_003240.5	MANE Select	c.1073C>T	p.Ala358Val	missense	Exon 4 of 4	NP_003231.2
	LEFTY2	NM_001172425.3		c.971C>T	p.Ala324Val	missense	Exon 5 of 5	NP_001165896.1	O00292-2

Ensembl Transcripts

Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
LEFTY2	ENST00000366820.10	TSL:1 MANE Select	c.1073C>T	p.Ala358Val	missense	Exon 4 of 4	ENSP00000355785.5	O00292-1
LEFTY2	ENST00000420304.6	TSL:2	c.971C>T	p.Ala324Val	missense	Exon 5 of 5	ENSP00000388009.2	O00292-2
ENSG00000248322	ENST00000513672.1	TSL:2	n.89C>T		non_coding_transcript_exon	Exon 1 of 2

Frequencies

GnomAD3 genomes

AF:

0.000164

AC:

AN:

152174

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.0000724

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.000262

Gnomad ASJ

AF:

0.00173

Gnomad EAS

AF:

0.00

Gnomad SAS

AF:

0.00

Gnomad FIN

AF:

0.000283

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.000118

Gnomad OTH

AF:

0.000478

GnomAD2 exomes

AF:

0.000195

AC:

AN:

250996

AF XY:

0.000206

show subpopulations

Gnomad AFR exome

AF:

0.00

Gnomad AMR exome

AF:

0.000231

Gnomad ASJ exome

AF:

0.00159

Gnomad EAS exome

AF:

0.00

Gnomad FIN exome

AF:

0.000323

Gnomad NFE exome

AF:

0.000150

Gnomad OTH exome

AF:

0.000163

GnomAD4 exome

AF:

0.000144

AC:

210

AN:

1461660

Hom.:

Cov.:

AF XY:

0.000153

AC XY:

111

AN XY:

727128

show subpopulations

African (AFR)

AF:

0.00

AC:

AN:

33476

American (AMR)

AF:

0.000224

AC:

AN:

44724

Ashkenazi Jewish (ASJ)

AF:

0.00138

AC:

AN:

26136

East Asian (EAS)

AF:

0.0000252

AC:

AN:

39700

South Asian (SAS)

AF:

0.0000232

AC:

AN:

86246

European-Finnish (FIN)

AF:

0.000113

AC:

AN:

53300

Middle Eastern (MID)

AF:

0.00

AC:

AN:

5680

European-Non Finnish (NFE)

AF:

0.000129

AC:

143

AN:

1112012

Other (OTH)

AF:

0.000199

AC:

AN:

60386

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.489

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:

0.000164

AC:

AN:

152292

Hom.:

Cov.:

AF XY:

0.000161

AC XY:

AN XY:

74476

show subpopulations

African (AFR)

AF:

0.0000722

AC:

AN:

41554

American (AMR)

AF:

0.000261

AC:

AN:

15308

Ashkenazi Jewish (ASJ)

AF:

0.00173

AC:

AN:

3472

East Asian (EAS)

AF:

0.00

AC:

AN:

5192

South Asian (SAS)

AF:

0.00

AC:

AN:

4822

European-Finnish (FIN)

AF:

0.000283

AC:

AN:

10606

Middle Eastern (MID)

AF:

0.00

AC:

AN:

294

European-Non Finnish (NFE)

AF:

0.000118

AC:

AN:

68022

Other (OTH)

AF:

0.000473

AC:

AN:

2112

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.515

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:

0.000230

Hom.:

Bravo

AF:

0.000125

TwinsUK

AF:

0.000270

AC:

ALSPAC

AF:

0.00

AC:

ESP6500AA

AF:

0.00

AC:

ESP6500EA

AF:

0.000233

AC:

ExAC

AF:

0.000206

AC:

EpiCase

AF:

0.000164

EpiControl

AF:

0.000296

ClinVar

ClinVar submissions

Significance:Conflicting classifications of pathogenicity

Revision:criteria provided, conflicting classifications

View on ClinVar

Pathogenic

VUS

Benign

Condition

Left-right axis malformations (2)

not specified (1)

Computational scores

Source: dbNSFP v4.9

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.096

BayesDel_addAF

Benign

-0.24

BayesDel_noAF

Benign

-0.30

CADD

Benign

(source)

DANN

Uncertain

0.98

DEOGEN2

Benign

0.18

Eigen

Benign

-0.62

Eigen_PC

Benign

-0.52

FATHMM_MKL

Benign

0.060

LIST_S2

Benign

0.76

M_CAP

Benign

0.011

MetaRNN

Benign

0.014

MetaSVM

Benign

-0.94

MutationAssessor

Uncertain

2.1

PhyloP100

1.8

PrimateAI

Benign

0.32

PROVEAN

Benign

-0.57

REVEL

Benign

0.14

Sift

Benign

0.23

Sift4G

Benign

0.66

Polyphen

0.021

Vest4

0.20

MVP

0.65

MPC

0.20

ClinPred

0.037

GERP RS

3.3

Varity_R

0.025

gMVP

0.51

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