17-40084757-A-G

Variant summary

Our verdict is Uncertain significance. Variant got 5 ACMG points: 5P and 0B. PM2 PP2 PP5_Moderate

The NM_199334.5(THRA):c.518A>G(p.Glu173Gly) variant causes a missense change involving the alteration of a conserved nucleotide. The variant allele was found at a frequency of 0.00000342 in 1,461,866 control chromosomes in the GnomAD database, with no homozygous occurrence. Variant has been reported in ClinVar as Likely pathogenic (★).

• Frequency:
  • Genomes: not found (cov: 32)
  • Exomes 𝑓: 0.0000034 (0 hom.)
• Consequence: THRA NM_199334.5 missense
• Clinical Significance: Likely pathogenic criteria provided, single submitter P:1
• Conservation: PhyloP100: 7.27

Genes affected

THRA (HGNC:11796): (thyroid hormone receptor alpha) The protein encoded by this gene is a nuclear hormone receptor for triiodothyronine. It is one of the several receptors for thyroid hormone, and has been shown to mediate the biological activities of thyroid hormone. Knockout studies in mice suggest that the different receptors, while having certain extent of redundancy, may mediate different functions of thyroid hormone. Alternatively spliced transcript variants encoding distinct isoforms have been reported. [provided by RefSeq, Jul 2008]

ACMG classification

Verdict is Uncertain_significance. Variant got 5 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• PP2: Missense variant where missense usually causes diseases, THRA
• PP5: Variant 17-40084757-A-G is Pathogenic according to our data. Variant chr17-40084757-A-G is described in ClinVar as [Likely_pathogenic]. Clinvar id is 992628.Status of the report is criteria_provided_single_submitter, 1 stars.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
THRA	NM_199334.5	c.518A>G	p.Glu173Gly	missense_variant	6/9	ENST00000450525.7

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
THRA	ENST00000450525.7	c.518A>G	p.Glu173Gly	missense_variant	6/9	1	NM_199334.5	P1

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD4 exome AF: 0.00000342 AC: 5 AN: 1461866 Hom.: 0 Cov.: 31 AF XY: 0.00000550 AC XY: 4 AN XY: 727236

Gnomad4 AFR exome AF: 0.00

Gnomad4 AMR exome AF: 0.0000447

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: 0.00000270

Gnomad4 OTH exome AF: 0.00

GnomAD4 genome Cov.: 32

ClinVar

Significance: Likely pathogenic

Submissions summary: Pathogenic:1

Revision: criteria provided, single submitter

Submissions by phenotype

Congenital nongoitrous hypothryoidism 6 Pathogenic:1

Likely pathogenic, criteria provided, single submitter

clinical testing

Charité Universitätsmedizin Berlin, Charite Universitaetsmedizin Berlin

Dec 01, 2020

The described THRA variant fulfills the PM2 criteria of the American College of Medical Genetics and Genomics classification (Richards et al. 2015) placing it in the 'likely pathogenic' category. -

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Uncertain	0.38
BayesDel_addAF	Pathogenic	0.46	D
BayesDel_noAF	Pathogenic	0.42
Cadd	Pathogenic	26
Dann	Uncertain	1.0
DEOGEN2	Pathogenic	0.80	D;.;D;.;.
Eigen	Uncertain	0.32
Eigen_PC	Uncertain	0.37
FATHMM_MKL	Pathogenic	0.99	D
M_CAP	Pathogenic	0.61	D
MetaRNN	Uncertain	0.54	D;D;D;D;D
MetaSVM	Uncertain	0.67	D
MutationAssessor	Uncertain	2.3	M;M;M;M;M
MutationTaster	Benign	1.0	D;D;D;D;D
PrimateAI	Uncertain	0.61	T
PROVEAN	Pathogenic	-4.5	D;.;D;D;D
REVEL	Pathogenic	0.77
Sift	Uncertain	0.0030	D;.;D;D;D
Sift4G	Benign	0.16	T;T;T;T;T
Polyphen		0.67	P;P;P;.;.
Vest4		0.54
MutPred		0.23		Gain of MoRF binding (P = 0.05);Gain of MoRF binding (P = 0.05);Gain of MoRF binding (P = 0.05);Gain of MoRF binding (P = 0.05);Gain of MoRF binding (P = 0.05);
MVP		0.99
MPC		2.1
ClinPred		0.99	D
GERP RS		4.5
Varity_R		0.54
gMVP		0.95

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

Other links and lift over

dbSNP: rs1987264133; hg19: chr17-38241010;