1-118884820-T-C

Variant summary

Our verdict is Likely benign. Variant got -2 ACMG points: 2P and 4B. PM2BP4_Strong

The NM_001330677.2(TBX15):c.1721A>G(p.Asn574Ser) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000026 in 1,614,086 control chromosomes in the GnomAD database, including 1 homozygotes. In-silico tool predicts a benign outcome for this variant. 16/21 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★★).

Frequency

Genomes: 𝑓 0.00014 ( 1 hom., cov: 32)

Exomes 𝑓: 0.000014 ( 0 hom. )

Consequence

TBX15
NM_001330677.2 missense

Scores

Clinical Significance

Uncertain significance criteria provided, multiple submitters, no conflicts U:3

Conservation

PhyloP100: 0.808

Variant links:

Genes affected

TBX15 (HGNC:11594): (T-box transcription factor 15) This gene belongs to the T-box family of genes, which encode a phylogenetically conserved family of transcription factors that regulate a variety of developmental processes. All these genes contain a common T-box DNA-binding domain. Mutations in this gene are associated with Cousin syndrome.[provided by RefSeq, Oct 2009]

TBX15 links:

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Likely_benign. Variant got -2 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

BP4

Computational evidence support a benign effect (MetaRNN=0.01714164).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
TBX15	NM_001330677.2 linkuse as main transcript	c.1721A>G	p.Asn574Ser	missense_variant	8/8	ENST00000369429.5

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
TBX15	ENST00000369429.5 linkuse as main transcript	c.1721A>G	p.Asn574Ser	missense_variant	8/8	5	NM_001330677.2	P1	Q96SF7-1
TBX15	ENST00000207157.7 linkuse as main transcript	c.1403A>G	p.Asn468Ser	missense_variant	8/8	1			Q96SF7-2
TBX15	ENST00000449873.5 linkuse as main transcript	c.905A>G	p.Asn302Ser	missense_variant	4/4	5

Frequencies

GnomAD3 genomes

AF:

0.000145

AC:

AN:

152100

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.00

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.00144

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:

0.00

GnomAD3 exomes

AF:

0.0000199

AC:

AN:

250992

Hom.:

AF XY:

0.0000221

AC XY:

AN XY:

135642

show subpopulations

Gnomad AFR exome

AF:

0.00

Gnomad AMR exome

AF:

0.0000867

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:

0.000327

GnomAD4 exome

AF:

0.0000137

AC:

AN:

1461868

Hom.:

Cov.:

AF XY:

0.0000124

AC XY:

AN XY:

727238

show subpopulations

Gnomad4 AFR exome

AF:

0.0000299

Gnomad4 AMR exome

AF:

0.000268

Gnomad4 ASJ exome

AF:

0.00

Gnomad4 EAS exome

AF:

0.0000252

Gnomad4 SAS exome

AF:

0.0000116

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

0.00

Gnomad4 OTH exome

AF:

0.0000828

GnomAD4 genome

AF:

0.000145

AC:

AN:

152218

Hom.:

Cov.:

AF XY:

0.000134

AC XY:

AN XY:

74420

show subpopulations

Gnomad4 AFR

AF:

0.00

Gnomad4 AMR

AF:

0.00144

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:

0.00

Alfa

AF:

0.0000282

Hom.:

Bravo

AF:

0.000363

ExAC

AF:

0.00000824

AC:

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:3

Revision: criteria provided, multiple submitters, no conflicts

LINK: link

Submissions by phenotype

Pelviscapular dysplasia

Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Genome-Nilou Lab

Apr 11, 2023

- -

Inborn genetic diseases

Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Ambry Genetics

Apr 12, 2022

The c.1403A>G (p.N468S) alteration is located in exon 8 (coding exon 7) of the TBX15 gene. This alteration results from a A to G substitution at nucleotide position 1403, causing the asparagine (N) at amino acid position 468 to be replaced by a serine (S). Based on insufficient or conflicting evidence, the clinical significance of this alteration remains unclear. -

not provided

Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Invitae

Aug 21, 2022

This sequence change replaces asparagine, which is neutral and polar, with serine, which is neutral and polar, at codon 468 of the TBX15 protein (p.Asn468Ser). This variant is present in population databases (rs548905715, gnomAD 0.01%). This variant has not been reported in the literature in individuals affected with TBX15-related conditions. ClinVar contains an entry for this variant (Variation ID: 1408532). Algorithms developed to predict the effect of missense changes on protein structure and function output the following: SIFT: "Tolerated"; PolyPhen-2: "Benign"; Align-GVGD: "Class C0". The serine amino acid residue is found in multiple mammalian species, which suggests that this missense change does not adversely affect protein function. In summary, the available evidence is currently insufficient to determine the role of this variant in disease. Therefore, it has been classified as a Variant of Uncertain Significance. -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.047

BayesDel_addAF

Benign

-0.37

BayesDel_noAF

Benign

-0.51

Cadd

Benign

7.1

Dann

Benign

0.38

Eigen

Benign

-0.90

Eigen_PC

Benign

-0.82

FATHMM_MKL

Benign

0.048

LIST_S2

Benign

0.83

T;T;T

M_CAP

Benign

0.014

MetaRNN

Benign

0.017

T;T;T

MetaSVM

Benign

-0.90

MutationTaster

Benign

1.0

N;N

PrimateAI

Benign

0.39

PROVEAN

Benign

-0.40

N;N;N

REVEL

Benign

0.16

Sift

Benign

0.10

T;T;T

Sift4G

Benign

1.0

T;T;T

Polyphen

0.0

.;.;B

Vest4

0.069

MutPred

0.095

.;.;Gain of sheet (P = 0.0061);

MVP

0.22

MPC

0.21

ClinPred

0.074

GERP RS

1.6

Varity_R

0.035

gMVP

0.045

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