2-1477365-G-A

Variant names:

Variant summary

Our verdict is Uncertain significance. The variant received 0 ACMG points: 2P and 2B. PM2BP4_Moderate

The NM_001206744.2(TPO):c.1099G>A(p.Val367Met) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00000195 in 1,538,432 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 13/22 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★). Synonymous variant affecting the same amino acid position (i.e. V367V) has been classified as Likely benign.

Frequency

Genomes: 𝑓 0.000013 ( 0 hom., cov: 33)

Exomes 𝑓: 7.2e-7 ( 0 hom. )

Consequence

TPO
NM_001206744.2 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: -1.06

Publications

0 publications found

Variant links:

Genes affected

TPO (HGNC:12015): (thyroid peroxidase) This gene encodes a membrane-bound glycoprotein. The encoded protein acts as an enzyme and plays a central role in thyroid gland function. The protein functions in the iodination of tyrosine residues in thyroglobulin and phenoxy-ester formation between pairs of iodinated tyrosines to generate the thyroid hormones, thyroxine and triiodothyronine. Mutations in this gene are associated with several disorders of thyroid hormonogenesis, including congenital hypothyroidism, congenital goiter, and thyroid hormone organification defect IIA. Multiple transcript variants encoding distinct isoforms have been identified for this gene, but the full-length nature of some variants has not been determined. [provided by RefSeq, May 2011]

TPO Gene-Disease associations (from GenCC):

thyroid dyshormonogenesis 2A
Inheritance: AR Classification: STRONG Submitted by: Labcorp Genetics (formerly Invitae)
familial thyroid dyshormonogenesis
Inheritance: AR Classification: SUPPORTIVE Submitted by: Orphanet

TPO links:

ENSG00000231482 (HGNC:):

ENSG00000231482 links:

ENSG00000228613 (HGNC:58132):

ENSG00000228613 links:

Genome browser will be placed here

ACMG classification

Classification was made for transcript

Our verdict: Uncertain_significance. The variant received 0 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

BP4

Computational evidence support a benign effect (MetaRNN=0.13854253).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
TPO	NM_001206744.2 link	c.1099G>A	p.Val367Met	missense_variant	Exon 8 of 17	ENST00000329066.9	NP_001193673.1	P07202-1Q502Y3Q6P534

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
TPO	ENST00000329066.9 link	c.1099G>A	p.Val367Met	missense_variant	Exon 8 of 17	1	NM_001206744.2	ENSP00000329869.4		P07202-1

Frequencies

GnomAD3 genomes

AF:

0.0000132

AC:

AN:

152030

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.00

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.0000655

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:

0.0000147

Gnomad OTH

AF:

0.00

GnomAD2 exomes

AF:

0.00

AC:

AN:

139812

AF XY:

0.00

Gnomad AFR exome

AF:

0.00

Gnomad AMR exome

AF:

0.00

Gnomad ASJ exome

AF:

0.00

Gnomad EAS 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:

7.21e-7

AC:

AN:

1386402

Hom.:

Cov.:

AF XY:

0.00000146

AC XY:

AN XY:

683428

show subpopulations

⚠️ The allele balance in gnomAD version 4 Exomes is significantly skewed from the expected value of 0.5.

African (AFR)

AF:

0.00

AC:

AN:

31552

American (AMR)

AF:

0.00

AC:

AN:

35652

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

24896

East Asian (EAS)

AF:

0.00

AC:

AN:

35972

South Asian (SAS)

AF:

0.00

AC:

AN:

78956

European-Finnish (FIN)

AF:

0.00

AC:

AN:

45266

Middle Eastern (MID)

AF:

0.00

AC:

AN:

4722

European-Non Finnish (NFE)

AF:

9.33e-7

AC:

AN:

1071928

Other (OTH)

AF:

0.00

AC:

AN:

57458

⚠️ The allele balance in gnomAD4 Exomes is highly skewed from 0.5 (p-value = 0), which strongly suggests a high chance of mosaicism in these individuals.

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.275

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

GnomAD4 genome

AF:

0.0000132

AC:

AN:

152030

Hom.:

Cov.:

AF XY:

0.0000269

AC XY:

AN XY:

74262

show subpopulations

African (AFR)

AF:

0.00

AC:

AN:

41414

American (AMR)

AF:

0.0000655

AC:

AN:

15268

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

3470

East Asian (EAS)

AF:

0.00

AC:

AN:

5150

South Asian (SAS)

AF:

0.00

AC:

AN:

4834

European-Finnish (FIN)

AF:

0.00

AC:

AN:

10612

Middle Eastern (MID)

AF:

0.00

AC:

AN:

312

European-Non Finnish (NFE)

AF:

0.0000147

AC:

AN:

67974

Other (OTH)

AF:

0.00

AC:

AN:

2084

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.475

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Alfa

AF:

0.00

Hom.:

Bravo

AF:

0.00000378

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

not specified

Uncertain:1

Nov 07, 2016

Genetic Services Laboratory, University of Chicago

Significance:Uncertain significance

Review Status:criteria provided, single submitter

Collection Method:clinical testing

- -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.17

BayesDel_addAF

Benign

-0.21

BayesDel_noAF

Benign

-0.54

CADD

Benign

7.3

(source)

DANN

Uncertain

0.99

DEOGEN2

Benign

0.29

T;T;.;.;.

Eigen

Benign

-0.65

Eigen_PC

Benign

-0.72

FATHMM_MKL

Benign

0.14

LIST_S2

Benign

0.20

T;.;T;T;T

M_CAP

Uncertain

0.15

MetaRNN

Benign

0.14

T;T;T;T;T

MetaSVM

Benign

-0.92

MutationAssessor

Uncertain

2.1

M;M;M;M;.

PhyloP100

-1.1

PrimateAI

Uncertain

0.78

PROVEAN

Benign

-0.82

N;N;N;N;N

REVEL

Benign

0.038

Sift

Benign

0.13

T;T;T;T;T

Sift4G

Benign

0.13

T;T;T;T;T

Polyphen

0.50

P;P;B;B;.

Vest4

0.057

MutPred

0.49

Gain of catalytic residue at V367 (P = 0.0464);Gain of catalytic residue at V367 (P = 0.0464);Gain of catalytic residue at V367 (P = 0.0464);Gain of catalytic residue at V367 (P = 0.0464);.;

MVP

0.72

MPC

1.3

ClinPred

0.070

GERP RS

1.8

Varity_R

0.053

gMVP

0.39

Mutation Taster

=93/7

polymorphism

(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

You must be logged in to view publications. This limit was set because tens of millions (!) of queries from AI bots are generated daily.

Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

Publications

ACMG classification

Transcripts

RefSeq

Ensembl

Frequencies

ClinVar

Submissions by phenotype

Computational scores

Splicing

Publications

Other links and lift over