5-136029132-C-T

Variant summary

Our verdict is Likely benign. Variant got -6 ACMG points: 0P and 6B. BP4_ModerateBS2

The NM_000358.3(TGFBI):c.77C>T(p.Ala26Val) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0000636 in 1,525,258 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 12/21 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).

Frequency

Genomes: 𝑓 0.00033 ( 0 hom., cov: 32)

Exomes 𝑓: 0.000034 ( 0 hom. )

Consequence

TGFBI
NM_000358.3 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 2.32

Variant links:

Genes affected

TGFBI (HGNC:11771): (transforming growth factor beta induced) This gene encodes an RGD-containing protein that binds to type I, II and IV collagens. The RGD motif is found in many extracellular matrix proteins modulating cell adhesion and serves as a ligand recognition sequence for several integrins. This protein plays a role in cell-collagen interactions and may be involved in endochondrial bone formation in cartilage. The protein is induced by transforming growth factor-beta and acts to inhibit cell adhesion. Mutations in this gene are associated with multiple types of corneal dystrophy. [provided by RefSeq, Jul 2008]

TGFBI links:

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Likely_benign. Variant got -6 ACMG points.

BP4

Computational evidence support a benign effect (MetaRNN=0.115766406).

BS2

High AC in GnomAd at 50 AD gene.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
TGFBI	NM_000358.3 linkuse as main transcript	c.77C>T	p.Ala26Val	missense_variant	1/17	ENST00000442011.7

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris
TGFBI	ENST00000442011.7 linkuse as main transcript	c.77C>T	p.Ala26Val	missense_variant	1/17	1	NM_000358.3	P1
TGFBI	ENST00000504185.5 linkuse as main transcript	n.145C>T		non_coding_transcript_exon_variant	1/5	4
TGFBI	ENST00000506699.5 linkuse as main transcript	n.142C>T		non_coding_transcript_exon_variant	1/17	2
TGFBI	ENST00000507018.5 linkuse as main transcript			upstream_gene_variant		5

Frequencies

GnomAD3 genomes

AF:

0.000329

AC:

AN:

152202

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.00118

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:

0.000478

GnomAD3 exomes

AF:

0.0000912

AC:

AN:

120580

Hom.:

AF XY:

0.0000601

AC XY:

AN XY:

66604

show subpopulations

Gnomad AFR exome

AF:

0.00123

Gnomad AMR exome

AF:

0.000252

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:

0.0000342

AC:

AN:

1373056

Hom.:

Cov.:

AF XY:

0.0000221

AC XY:

AN XY:

677534

show subpopulations

Gnomad4 AFR exome

AF:

0.00128

Gnomad4 AMR exome

AF:

0.000199

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:

0.0000349

GnomAD4 genome

AF:

0.000329

AC:

AN:

152202

Hom.:

Cov.:

AF XY:

0.000296

AC XY:

AN XY:

74352

show subpopulations

Gnomad4 AFR

AF:

0.00118

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:

0.000478

Alfa

AF:

0.000214

Hom.:

Bravo

AF:

0.000438

ExAC

AF:

0.0000194

AC:

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

Inborn genetic diseases

Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Ambry Genetics

Sep 17, 2021

The c.77C>T (p.A26V) alteration is located in exon 1 (coding exon 1) of the TGFBI gene. This alteration results from a C to T substitution at nucleotide position 77, causing the alanine (A) at amino acid position 26 to be replaced by a valine (V). 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

Benign

0.19

BayesDel_addAF

Benign

-0.19

BayesDel_noAF

Benign

-0.090

Cadd

Benign

Dann

Uncertain

1.0

DEOGEN2

Benign

0.30

Eigen

Benign

-0.044

Eigen_PC

Benign

0.056

FATHMM_MKL

Uncertain

0.82

LIST_S2

Benign

0.69

M_CAP

Pathogenic

0.75

MetaRNN

Benign

0.12

MetaSVM

Uncertain

0.49

MutationAssessor

Benign

0.0

MutationTaster

Benign

1.0

D;D

PrimateAI

Pathogenic

0.90

PROVEAN

Benign

-1.3

REVEL

Uncertain

0.43

Sift

Uncertain

0.0030

Sift4G

Uncertain

0.013

Polyphen

0.25

Vest4

0.13

MutPred

0.19

Loss of disorder (P = 0.0533);

MVP

0.92

MPC

0.043

ClinPred

0.060

GERP RS

4.5

RBP_binding_hub_radar

0.0

RBP_regulation_power_radar

1.6

Varity_R

0.24

gMVP

0.36

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