rs121918709

Variant names:

• chr3-24127634-T-C
• rs121918709
• NM_001354712.2:c.1009A>G

Variant summary

Our verdict is Uncertain significance. Variant got 5 ACMG points: 5P and 0B. PM2 PP2 PP3 PP5

The NM_001354712.2(THRB):​c.1009A>G​(p.Thr337Ala) variant causes a missense change involving the alteration of a conserved nucleotide. The variant was absent in control chromosomes in GnomAD project. In-silico tool predicts a pathogenic outcome for this variant. Variant has been reported in ClinVar as Pathogenic (no stars). Another variant affecting the same amino acid position, but resulting in a different missense (i.e. T337I) has been classified as Likely benign.

• Frequency: Genomes: not found (cov: 33)
• Consequence: THRB NM_001354712.2 missense
• Clinical Significance: Pathogenic no assertion criteria provided P:1
• Conservation: PhyloP100: 8.02

Genes affected

THRB (HGNC:11799): (thyroid hormone receptor beta) 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. Mutations in this gene are known to be a cause of generalized thyroid hormone resistance (GTHR), a syndrome characterized by goiter and high levels of circulating thyroid hormone (T3-T4), with normal or slightly elevated thyroid stimulating hormone (TSH). Several alternatively spliced transcript variants encoding the same protein have been observed for this gene. [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 in the THRB gene, where missense mutations are typically associated with disease (based on misZ statistic). The gene has 58 curated pathogenic missense variants (we use a threshold of 10). The gene has 5 curated benign missense variants. Gene score misZ: 2.5652 (below the threshold of 3.09). Trascript score misZ: 3.708 (above the threshold of 3.09). GenCC associations: The gene is linked to thyroid hormone resistance, generalized, autosomal dominant, resistance to thyroid hormone due to a mutation in thyroid hormone receptor beta, thyroid hormone resistance, generalized, autosomal recessive.
• PP3: MetaRNN computational evidence supports a deleterious effect, 0.787
• PP5: Variant 3-24127634-T-C is Pathogenic according to our data. Variant chr3-24127634-T-C is described in ClinVar as [Pathogenic]. Clinvar id is 12569.Status of the report is no_assertion_criteria_provided, 0 stars.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
THRB	NM_001354712.2	c.1009A>G	p.Thr337Ala	missense_variant	Exon 10 of 11	ENST00000646209.2	NP_001341641.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
THRB	ENST00000646209.2	c.1009A>G	p.Thr337Ala	missense_variant	Exon 10 of 11		NM_001354712.2	ENSP00000496686.2

Frequencies

GnomAD3 genomes Cov.: 33

GnomAD4 exome Cov.: 33

GnomAD4 genome Cov.: 33

ClinVar

Significance: Pathogenic

Submissions summary: Pathogenic:1

Revision: no assertion criteria provided

Submissions by phenotype

Selective pituitary resistance to thyroid hormone Pathogenic:1

Feb 01, 1999

OMIM

Significance: Pathogenic

Review Status: no assertion criteria provided

Collection Method: literature only

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Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Uncertain	0.47
BayesDel_addAF	Pathogenic	0.44	D
BayesDel_noAF	Pathogenic	0.40
CADD	Pathogenic	27
DANN	Uncertain	1.0
DEOGEN2	Pathogenic	0.86	D;D;D;D;D;D;D;D;D;D;.
Eigen	Uncertain	0.34
Eigen_PC	Uncertain	0.49
FATHMM_MKL	Pathogenic	0.98	D
LIST_S2	Uncertain	0.94	.;.;.;.;.;.;.;.;.;D;D
M_CAP	Uncertain	0.24	D
MetaRNN	Pathogenic	0.79	D;D;D;D;D;D;D;D;D;D;D
MetaSVM	Pathogenic	0.85	D
MutationAssessor	Benign	1.4	L;L;L;L;L;L;L;L;L;L;.
PrimateAI	Pathogenic	0.85	D
PROVEAN	Benign	-1.8	N;N;.;.;.;.;.;.;N;.;N
REVEL	Pathogenic	0.72
Sift	Uncertain	0.012	D;D;.;.;.;.;.;.;D;.;D
Sift4G	Benign	0.47	T;T;.;.;.;.;.;.;T;.;T
Polyphen		0.30	B;B;B;B;B;B;B;B;B;B;.
Vest4		0.76
MutPred		0.65		Gain of ubiquitination at K342 (P = 0.1162);Gain of ubiquitination at K342 (P = 0.1162);Gain of ubiquitination at K342 (P = 0.1162);Gain of ubiquitination at K342 (P = 0.1162);Gain of ubiquitination at K342 (P = 0.1162);Gain of ubiquitination at K342 (P = 0.1162);Gain of ubiquitination at K342 (P = 0.1162);Gain of ubiquitination at K342 (P = 0.1162);Gain of ubiquitination at K342 (P = 0.1162);Gain of ubiquitination at K342 (P = 0.1162);.;
MVP		0.92
MPC		1.3
ClinPred		0.81	D
GERP RS		6.0
Varity_R		0.59
gMVP		0.93

Splicing

Name	Calibrated prediction	Score	Prediction
SpliceAI score (max)		0.11		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: rs121918709; hg19: chr3-24169125;