Genetic Variant TG:p.Gln1796Lys (chr8-132948928-C-A) – ACMG Classification: Uncertain_significance (2 pts)

Variant summary

Our verdict is Uncertain significance. The variant received 2 ACMG points: 2P and 0B. PM2

The NM_003235.5(TG):c.5386C>A(p.Gln1796Lys) variant causes a missense change. The variant allele was found at a frequency of 0.000000684 in 1,461,532 control chromosomes in the GnomAD database, with no homozygous occurrence. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar. Synonymous variant affecting the same amino acid position (i.e. Q1796Q) has been classified as Likely benign.

Frequency

Genomes: not found (cov: 32)

Exomes 𝑓: 6.8e-7 ( 0 hom. )

Consequence

TG
NM_003235.5 missense

Scores

Clinical Significance

Not reported in ClinVar

Conservation

PhyloP100: 4.13

Publications

0 publications found

Variant links:

Genes affected

TG (HGNC:11764): (thyroglobulin) Thyroglobulin (Tg) is a glycoprotein homodimer produced predominantly by the thryroid gland. It acts as a substrate for the synthesis of thyroxine and triiodothyronine as well as the storage of the inactive forms of thyroid hormone and iodine. Thyroglobulin is secreted from the endoplasmic reticulum to its site of iodination, and subsequent thyroxine biosynthesis, in the follicular lumen. Mutations in this gene cause thyroid dyshormonogenesis, manifested as goiter, and are associated with moderate to severe congenital hypothyroidism. Polymorphisms in this gene are associated with susceptibility to autoimmune thyroid diseases (AITD) such as Graves disease and Hashimoto thryoiditis. [provided by RefSeq, Nov 2009]

TG Gene-Disease associations (from GenCC):

thyroid dyshormonogenesis 3
Inheritance: AR Classification: STRONG Submitted by: PanelApp Australia, Labcorp Genetics (formerly Invitae)
familial thyroid dyshormonogenesis
Inheritance: AR Classification: SUPPORTIVE Submitted by: Orphanet
thyroid cancer
Inheritance: AD Classification: LIMITED Submitted by: Ambry Genetics

TG links:

Genome browser will be placed here

ACMG classification

Classification was made for transcript

Our verdict: Uncertain_significance. The variant received 2 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_003235.5. You can select a different transcript below to see updated ACMG assignments.

RefSeq Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	TG	NM_003235.5	MANE Select	c.5386C>A	p.Gln1796Lys	missense	Exon 27 of 48	NP_003226.4

Ensembl Transcripts

Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
TG	ENST00000220616.9	TSL:1 MANE Select	c.5386C>A	p.Gln1796Lys	missense	Exon 27 of 48	ENSP00000220616.4	P01266-1
TG	ENST00000523756.5	TSL:1	n.*1599C>A		non_coding_transcript_exon	Exon 14 of 35	ENSP00000428628.1	H0YB42
TG	ENST00000523756.5	TSL:1	n.*1599C>A		3_prime_UTR	Exon 14 of 35	ENSP00000428628.1	H0YB42

Frequencies

GnomAD3 genomes

Cov.:

GnomAD4 exome

AF:

6.84e-7

AC:

AN:

1461532

Hom.:

Cov.:

AF XY:

0.00000138

AC XY:

AN XY:

727076

show subpopulations

African (AFR)

AF:

0.00

AC:

AN:

33478

American (AMR)

AF:

0.00

AC:

AN:

44724

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

26136

East Asian (EAS)

AF:

0.00

AC:

AN:

39700

South Asian (SAS)

AF:

0.00

AC:

AN:

86258

European-Finnish (FIN)

AF:

0.00

AC:

AN:

53088

Middle Eastern (MID)

AF:

0.00

AC:

AN:

5768

European-Non Finnish (NFE)

AF:

8.99e-7

AC:

AN:

1111986

Other (OTH)

AF:

0.00

AC:

AN:

60394

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.775

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

Benign

0.11

BayesDel_addAF

Uncertain

0.15

BayesDel_noAF

Uncertain

-0.020

CADD

Uncertain

(source)

DANN

Uncertain

0.99

DEOGEN2

Benign

0.31

Eigen

Uncertain

0.66

Eigen_PC

Uncertain

0.62

FATHMM_MKL

Uncertain

0.93

LIST_S2

Benign

0.70

M_CAP

Benign

0.047

MetaRNN

Uncertain

0.68

MetaSVM

Uncertain

-0.15

MutationAssessor

Pathogenic

2.9

PhyloP100

4.1

PrimateAI

Benign

0.33

PROVEAN

Benign

-2.2

REVEL

Uncertain

0.35

Sift

Pathogenic

0.0

Sift4G

Uncertain

0.0040

Polyphen

1.0

Vest4

0.64

MutPred

0.39

Gain of ubiquitination at Q1796 (P = 0.0289)

MVP

0.90

MPC

0.34

ClinPred

0.99

GERP RS

5.6

Varity_R

0.63

gMVP

0.82

Mutation Taster

=47/53

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