Genetic Variant TGFBR3:p.Thr840Lys (chr1-91683776-G-T) – ACMG Classification: Uncertain_significance (3 pts)

Variant summary

Our verdict is Uncertain significance. The variant received 3 ACMG points: 3P and 0B. PM2PP3

The NM_003243.5(TGFBR3):c.2519C>A(p.Thr840Lys) variant causes a missense change involving the alteration of a conserved nucleotide. The variant allele was found at a frequency of 0.00000138 in 1,450,298 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a pathogenic outcome for this variant. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar. Another variant affecting the same amino acid position, but resulting in a different missense (i.e. T840M) has been classified as Uncertain significance.

Frequency

Genomes: not found (cov: 32)

Exomes 𝑓: 0.0000014 ( 0 hom. )

Consequence

TGFBR3
NM_003243.5 missense

Scores

Clinical Significance

Not reported in ClinVar

Conservation

PhyloP100: 7.71

Publications

0 publications found

Variant links:

Genes affected

TGFBR3 (HGNC:11774): (transforming growth factor beta receptor 3) This locus encodes the transforming growth factor (TGF)-beta type III receptor. The encoded receptor is a membrane proteoglycan that often functions as a co-receptor with other TGF-beta receptor superfamily members. Ectodomain shedding produces soluble TGFBR3, which may inhibit TGFB signaling. Decreased expression of this receptor has been observed in various cancers. Alternatively spliced transcript variants encoding different isoforms have been identified for this gene.[provided by RefSeq, Sep 2010]

TGFBR3 links:

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ACMG classification

Classification was made for transcript

Our verdict: Uncertain_significance. The variant received 3 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

PP3

MetaRNN computational evidence supports a deleterious effect, 0.744

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_003243.5. You can select a different transcript below to see updated ACMG assignments.

RefSeq Transcripts

Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein
TGFBR3	NM_003243.5	MANE Select	c.2519C>A	p.Thr840Lys	missense	Exon 17 of 17	NP_003234.2
TGFBR3	NM_001195683.2		c.2516C>A	p.Thr839Lys	missense	Exon 17 of 17	NP_001182612.1
TGFBR3	NM_001195684.1		c.2516C>A	p.Thr839Lys	missense	Exon 18 of 18	NP_001182613.1

Ensembl Transcripts

Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein
TGFBR3	ENST00000212355.9	TSL:1 MANE Select	c.2519C>A	p.Thr840Lys	missense	Exon 17 of 17	ENSP00000212355.4
TGFBR3	ENST00000525962.5	TSL:1	c.2519C>A	p.Thr840Lys	missense	Exon 16 of 16	ENSP00000436127.1
TGFBR3	ENST00000370399.6	TSL:1	c.2516C>A	p.Thr839Lys	missense	Exon 18 of 18	ENSP00000359426.2

Frequencies

GnomAD3 genomes

Cov.:

GnomAD4 exome

AF:

0.00000138

AC:

AN:

1450298

Hom.:

Cov.:

AF XY:

0.00

AC XY:

AN XY:

720674

show subpopulations

African (AFR)

AF:

0.00

AC:

AN:

33386

American (AMR)

AF:

0.00

AC:

AN:

43622

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

25886

East Asian (EAS)

AF:

0.00

AC:

AN:

39424

South Asian (SAS)

AF:

0.00

AC:

AN:

84312

European-Finnish (FIN)

AF:

0.00

AC:

AN:

49934

Middle Eastern (MID)

AF:

0.00

AC:

AN:

5580

European-Non Finnish (NFE)

AF:

0.00000180

AC:

AN:

1108178

Other (OTH)

AF:

0.00

AC:

AN:

59976

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.450

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

Cov.:

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.9

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Pathogenic

0.79

BayesDel_addAF

Pathogenic

0.26

BayesDel_noAF

Pathogenic

0.14

CADD

Pathogenic

(source)

DANN

Uncertain

0.99

DEOGEN2

Uncertain

0.79

Eigen

Pathogenic

0.84

Eigen_PC

Pathogenic

0.83

FATHMM_MKL

Pathogenic

0.99

LIST_S2

Pathogenic

0.97

M_CAP

Benign

0.045

MetaRNN

Pathogenic

0.74

MetaSVM

Benign

-0.59

MutationAssessor

Uncertain

2.6

PhyloP100

7.7

PrimateAI

Uncertain

0.77

PROVEAN

Uncertain

-3.0

REVEL

Uncertain

0.31

Sift

Uncertain

0.0020

Sift4G

Pathogenic

0.0

Polyphen

1.0

Vest4

0.72

MutPred

0.16

Gain of methylation at T840 (P = 0.0025)

MVP

0.87

MPC

0.27

ClinPred

0.97

GERP RS

5.7

Varity_R

0.63

gMVP

0.83

Mutation Taster

=21/79

disease causing

(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

ClinVar

Computational scores

Splicing

Publications

Other links and lift over