Variant 20-2317065-C-T details in Genebe, Genetics Data Aggregator

Variant summary

Our verdict is Benign. Variant got -8 ACMG points: 0P and 8B. BP4_ModerateBP6_ModerateBS2

The NM_003245.4(TGM3):c.670-3C>T variant causes a splice region, splice polypyrimidine tract, intron change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0013 in 1,613,322 control chromosomes in the GnomAD database, including 5 homozygotes. In-silico tool predicts a benign outcome for this variant. 3/3 splice prediction tools predict no significant impact on normal splicing. Variant has been reported in ClinVar as Likely benign (★).

Frequency

Genomes: 𝑓 0.00068 ( 0 hom., cov: 31)

Exomes 𝑓: 0.0014 ( 5 hom. )

Consequence

TGM3
NM_003245.4 splice_region, splice_polypyrimidine_tract, intron

Scores

Splicing: ADA: 0.004201

Clinical Significance

Likely benign criteria provided, single submitter B:1

Conservation

PhyloP100: 0.894

Variant links:

Genes affected

TGM3 (HGNC:11779): (transglutaminase 3) Transglutaminases are enzymes that catalyze the crosslinking of proteins by epsilon-gamma glutamyl lysine isopeptide bonds. While the primary structure of transglutaminases is not conserved, they all have the same amino acid sequence at their active sites and their activity is calcium-dependent. The protein encoded by this gene consists of two polypeptide chains activated from a single precursor protein by proteolysis. The encoded protein is involved the later stages of cell envelope formation in the epidermis and hair follicle. [provided by RefSeq, Jul 2008]

TGM3 links:

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ACMG classification

Classification made for transcript

Verdict is Benign. Variant got -8 ACMG points.

BP4

Computational evidence support a benign effect (BayesDel_noAF=-0.44).

BP6

Variant 20-2317065-C-T is Benign according to our data. Variant chr20-2317065-C-T is described in ClinVar as [Likely_benign]. Clinvar id is 3042869.Status of the report is criteria_provided_single_submitter, 1 stars.

BS2

High Homozygotes in GnomAdExome4 at 5 AR gene

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
TGM3	NM_003245.4 linkuse as main transcript	c.670-3C>T		splice_region_variant, splice_polypyrimidine_tract_variant, intron_variant		ENST00000381458.6

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
TGM3	ENST00000381458.6 linkuse as main transcript	c.670-3C>T		splice_region_variant, splice_polypyrimidine_tract_variant, intron_variant		1	NM_003245.4	P1
TGM3	ENST00000463090.1 linkuse as main transcript	n.50-3C>T		splice_region_variant, splice_polypyrimidine_tract_variant, intron_variant, non_coding_transcript_variant		3

Frequencies

GnomAD3 genomes

AF:

0.000684

AC:

104

AN:

152080

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.000217

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.000327

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:

0.00132

Gnomad OTH

AF:

0.00

GnomAD3 exomes

AF:

0.000681

AC:

171

AN:

251142

Hom.:

AF XY:

0.000715

AC XY:

AN XY:

135720

show subpopulations

Gnomad AFR exome

AF:

0.000185

Gnomad AMR exome

AF:

0.000723

Gnomad ASJ exome

AF:

0.0000994

Gnomad EAS exome

AF:

0.00

Gnomad SAS exome

AF:

0.000261

Gnomad FIN exome

AF:

0.0000463

Gnomad NFE exome

AF:

0.00115

Gnomad OTH exome

AF:

0.000490

GnomAD4 exome

AF:

0.00136

AC:

1986

AN:

1461124

Hom.:

Cov.:

AF XY:

0.00129

AC XY:

938

AN XY:

726828

show subpopulations

Gnomad4 AFR exome

AF:

0.000239

Gnomad4 AMR exome

AF:

0.000671

Gnomad4 ASJ exome

AF:

0.0000765

Gnomad4 EAS exome

AF:

0.00

Gnomad4 SAS exome

AF:

0.000186

Gnomad4 FIN exome

AF:

0.0000187

Gnomad4 NFE exome

AF:

0.00166

Gnomad4 OTH exome

AF:

0.00129

GnomAD4 genome

AF:

0.000683

AC:

104

AN:

152198

Hom.:

Cov.:

AF XY:

0.000564

AC XY:

AN XY:

74406

show subpopulations

Gnomad4 AFR

AF:

0.000217

Gnomad4 AMR

AF:

0.000327

Gnomad4 ASJ

AF:

0.00

Gnomad4 EAS

AF:

0.00

Gnomad4 SAS

AF:

0.00

Gnomad4 FIN

AF:

0.00

Gnomad4 NFE

AF:

0.00132

Gnomad4 OTH

AF:

0.00

Alfa

AF:

0.000965

Hom.:

Bravo

AF:

0.000759

EpiCase

AF:

0.00136

EpiControl

AF:

0.00148

ClinVar

Significance: Likely benign

Submissions summary: Benign:1

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

TGM3-related disorder

Benign:1

Likely benign, criteria provided, single submitter

clinical testing

PreventionGenetics, part of Exact Sciences

Dec 09, 2019

This variant is classified as likely benign based on ACMG/AMP sequence variant interpretation guidelines (Richards et al. 2015 PMID: 25741868, with internal and published modifications). -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

BayesDel_noAF

Benign

-0.44

CADD

Benign

DANN

Benign

0.84

Splicing

Name

Calibrated prediction

Score

Prediction

dbscSNV1_ADA

Benign

0.0042

dbscSNV1_RF

Benign

0.13

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