chr3-24143539-C-G

Variant names:

• chr3-24143539-C-G
• rs121918694
• NM_001354712.2:c.700G>C

Variant summary

Our verdict is Uncertain significance. The variant received 5 ACMG points: 5P and 0B. PM2 PM5 PP2

The NM_001354712.2(THRB):​c.700G>C​(p.Ala234Pro) variant causes a missense change involving the alteration of a conserved nucleotide. The variant was absent in control chromosomes in GnomAD project. Variant has been reported in ClinVar as Uncertain significance (★). Another variant affecting the same amino acid position, but resulting in a different missense (i.e. A234V) has been classified as Uncertain significance.

• Frequency: Genomes: not found (cov: 32)
• Consequence: THRB NM_001354712.2 missense
• Clinical Significance: Uncertain significance criteria provided, single submitter U:1
• Conservation: PhyloP100: 7.91
• Publications: 8 publications found

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]

THRB Gene-Disease associations (from GenCC):

• thyroid hormone resistance, generalized, autosomal dominant

  Inheritance: AD Classification: STRONG Submitted by: Labcorp Genetics (formerly Invitae)
• resistance to thyroid hormone due to a mutation in thyroid hormone receptor beta

  Inheritance: AR Classification: SUPPORTIVE Submitted by: Orphanet
• thyroid hormone resistance, generalized, autosomal recessive

  Inheritance: AR Classification: LIMITED Submitted by: Labcorp Genetics (formerly Invitae)

THRB-AS2 (HGNC:):

ACMG classification

Our verdict: Uncertain_significance. The variant received 5 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• PM5: Other missense variant is known to change same aminoacid residue: Variant chr3-24143539-C-T is described in ClinVar as Pathogenic. ClinVar VariationId is 12554.Status of the report is criteria_provided_multiple_submitters_no_conflicts, 2 stars.
• 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 resistance to thyroid hormone due to a mutation in thyroid hormone receptor beta, thyroid hormone resistance, generalized, autosomal recessive, thyroid hormone resistance, generalized, autosomal dominant.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
THRB	NM_001354712.2	c.700G>C	p.Ala234Pro	missense_variant	Exon 8 of 11	ENST00000646209.2	NP_001341641.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
THRB	ENST00000646209.2	c.700G>C	p.Ala234Pro	missense_variant	Exon 8 of 11		NM_001354712.2	ENSP00000496686.2

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD4 exome Cov.: 32

GnomAD4 genome Cov.: 32

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

Submissions by phenotype

Thyroid hormone resistance, generalized, autosomal dominant Uncertain:1

Nov 22, 2016

Clinical Molecular Genetics Laboratory, Johns Hopkins All Children's Hospital

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	Pathogenic	0.90
BayesDel_addAF	Pathogenic	0.44	D
BayesDel_noAF	Pathogenic	0.40
CADD	Pathogenic	30
DANN	Benign	0.89
DEOGEN2	Benign	0.33	T;T;T;T;T;T;T;T;T;T;.
Eigen	Uncertain	0.53
Eigen_PC	Uncertain	0.51
FATHMM_MKL	Pathogenic	0.99	D
LIST_S2	Pathogenic	0.99	.;.;.;.;.;.;.;.;.;D;D
M_CAP	Pathogenic	0.41	D
MetaRNN	Uncertain	0.67	D;D;D;D;D;D;D;D;D;D;D
MetaSVM	Uncertain	0.67	D
MutationAssessor	Uncertain	2.4	M;M;M;M;M;M;M;M;M;M;.
PhyloP100		7.9
PrimateAI	Pathogenic	0.81	D
PROVEAN	Benign	-0.93	N;N;.;.;.;.;.;.;N;.;N
REVEL	Uncertain	0.58
Sift	Benign	0.42	T;T;.;.;.;.;.;.;T;.;T
Sift4G	Benign	0.28	T;T;.;.;.;.;.;.;T;.;T
Polyphen		1.0	D;D;D;D;D;D;D;D;D;D;.
Vest4		0.78
MutPred		0.49		Loss of MoRF binding (P = 0.0496);Loss of MoRF binding (P = 0.0496);Loss of MoRF binding (P = 0.0496);Loss of MoRF binding (P = 0.0496);Loss of MoRF binding (P = 0.0496);Loss of MoRF binding (P = 0.0496);Loss of MoRF binding (P = 0.0496);Loss of MoRF binding (P = 0.0496);Loss of MoRF binding (P = 0.0496);Loss of MoRF binding (P = 0.0496);.;
MVP		0.76
MPC		1.5
ClinPred		0.60	D
GERP RS		6.0
Varity_R		0.68
gMVP		0.93
Mutation Taster		=0/100	disease causing

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

Other links and lift over

dbSNP: rs121918694; hg19: chr3-24185030;