Variant 2-227363760-C-A details in Genebe, Genetics Data Aggregator

Variant summary

Our verdict is Benign. Variant got -9 ACMG points: 0P and 9B. BP4_ModerateBP6_ModerateBP7BS2

The NM_024795.4(TM4SF20):c.654G>T(p.Leu218=) variant causes a synonymous change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000175 in 1,614,102 control chromosomes in the GnomAD database, including 1 homozygotes. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Benign (★).

Frequency

Genomes: 𝑓 0.00092 ( 0 hom., cov: 32)

Exomes 𝑓: 0.000097 ( 1 hom. )

Consequence

TM4SF20
NM_024795.4 synonymous

Scores

Clinical Significance

Benign criteria provided, single submitter B:1

Conservation

PhyloP100: 0.0460

Variant links:

Genes affected

TM4SF20 (HGNC:26230): (transmembrane 4 L six family member 20) The protein encoded by this gene is a member of the four-transmembrane L6 superfamily. Members of this family function in various cellular processes including cell proliferation, motility, and adhesion via their interactions with integrins. In human brain tissue, this gene is expressed at high levels in the parietal lobe, occipital lobe, hippocampus, pons, white matter, corpus callosum, and cerebellum. Knockout of the homologous gene in mouse results in a neurobehavioral phenotype with suggested enhanced motor coordination. A deletion mutation in the human gene is associated with specific language impairment-5. [provided by RefSeq, Jul 2016]

TM4SF20 links:

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Benign. Variant got -9 ACMG points.

BP4

Computational evidence support a benign effect (BayesDel_noAF=-0.31).

BP6

Variant 2-227363760-C-A is Benign according to our data. Variant chr2-227363760-C-A is described in ClinVar as [Benign]. Clinvar id is 1662441.Status of the report is criteria_provided_single_submitter, 1 stars.

BP7

Synonymous conserved (PhyloP=0.046 with no splicing effect.

BS2

High AC in GnomAd at 140 AD gene.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
TM4SF20	NM_024795.4 linkuse as main transcript	c.654G>T	p.Leu218=	synonymous_variant	4/4	ENST00000304568.4
TM4SF20	XM_011511876.3 linkuse as main transcript	c.453G>T	p.Leu151=	synonymous_variant	5/5

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
TM4SF20	ENST00000304568.4 linkuse as main transcript	c.654G>T	p.Leu218=	synonymous_variant	4/4	1	NM_024795.4	P1

Frequencies

GnomAD3 genomes

AF:

0.000920

AC:

140

AN:

152140

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.00319

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.000393

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:

0.000956

GnomAD3 exomes

AF:

0.000223

AC:

AN:

251364

Hom.:

AF XY:

0.000140

AC XY:

AN XY:

135856

show subpopulations

Gnomad AFR exome

AF:

0.00314

Gnomad AMR exome

AF:

0.000116

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:

0.000163

GnomAD4 exome

AF:

0.0000971

AC:

142

AN:

1461844

Hom.:

Cov.:

AF XY:

0.0000798

AC XY:

AN XY:

727222

show subpopulations

Gnomad4 AFR exome

AF:

0.00355

Gnomad4 AMR exome

AF:

0.000224

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:

0.00000180

Gnomad4 OTH exome

AF:

0.000182

GnomAD4 genome

AF:

0.000919

AC:

140

AN:

152258

Hom.:

Cov.:

AF XY:

0.000927

AC XY:

AN XY:

74446

show subpopulations

Gnomad4 AFR

AF:

0.00318

Gnomad4 AMR

AF:

0.000392

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:

0.000946

Alfa

AF:

0.000393

Hom.:

Bravo

AF:

0.00121

Asia WGS

AF:

0.000289

AC:

AN:

3478

ClinVar

Significance: Benign

Submissions summary: Benign:1

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

not provided

Benign:1

Benign, criteria provided, single submitter

clinical testing

Invitae

Dec 11, 2023

- -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

BayesDel_noAF

Benign

-0.31

Cadd

Benign

5.7

Dann

Benign

0.80

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