TSHR p.Asn744Lys

Variant names:

• chr14-81144290-C-A
• NM_000369.5:c.2232C>A
• TSHR p.Asn744Lys

Your query was ambiguous. Multiple possible variants found:

• chr14-81144290-C-A
• chr14-81144290-C-G

Variant summary

Our verdict is Uncertain significance. The variant received 1 ACMG points: 3P and 2B. PM2 PP2 BP4_Moderate

The NM_000369.5(TSHR):​c.2232C>A​(p.Asn744Lys) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant was absent in control chromosomes in GnomAD project. In-silico tool predicts a benign outcome for this variant. 16/20 in silico tools predict a benign outcome for this variant. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar. Another nucleotide change resulting in the same amino acid substitution has been previously reported as Likely benign in ClinVar.

• Frequency: Genomes: not found (cov: 32)
• Consequence: TSHR NM_000369.5 missense
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: 0.0280
• Publications: 0 publications found

Genes affected

TSHR (HGNC:12373): (thyroid stimulating hormone receptor) The protein encoded by this gene is a membrane protein and a major controller of thyroid cell metabolism. The encoded protein is a receptor for thyrothropin and thyrostimulin, and its activity is mediated by adenylate cyclase. Defects in this gene are a cause of several types of hyperthyroidism. Three transcript variants encoding different isoforms have been found for this gene. [provided by RefSeq, Dec 2008]

TSHR Gene-Disease associations (from GenCC):

• familial gestational hyperthyroidism

  Inheritance: AD Classification: DEFINITIVE, SUPPORTIVE Submitted by: G2P, Orphanet
• hypothyroidism due to TSH receptor mutations

  Inheritance: AD, AR Classification: DEFINITIVE, STRONG, SUPPORTIVE Submitted by: Orphanet, Labcorp Genetics (formerly Invitae), G2P
• familial hyperthyroidism due to mutations in TSH receptor

  Inheritance: AD Classification: STRONG, SUPPORTIVE Submitted by: Orphanet, Labcorp Genetics (formerly Invitae)
• athyreosis

  Inheritance: AD Classification: SUPPORTIVE Submitted by: Orphanet
• thyroid hypoplasia

  Inheritance: AD Classification: SUPPORTIVE Submitted by: Orphanet

TSHR-AS1 (HGNC:58172):

ACMG classification

Our verdict: Uncertain_significance. The variant received 1 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• PP2: Missense variant in the gene, where a lot of missense mutations are associated with disease in ClinVar. The gene has 43 curated pathogenic missense variants (we use a threshold of 10). The gene has 11 curated benign missense variants. Gene score misZ: 0.33445 (below the threshold of 3.09). Trascript score misZ: 1.3127 (below the threshold of 3.09). GenCC associations: The gene is linked to athyreosis, hypothyroidism due to TSH receptor mutations, familial hyperthyroidism due to mutations in TSH receptor, familial gestational hyperthyroidism, thyroid hypoplasia.
• BP4: Computational evidence support a benign effect (MetaRNN=0.09451333).

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_000369.5. 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
	TSHR	NM_000369.5	MANE Select	c.2232C>A	p.Asn744Lys	missense	Exon 10 of 10	NP_000360.2	P16473-1

Ensembl Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	TSHR	ENST00000298171.7	TSL:1 MANE Select	c.2232C>A	p.Asn744Lys	missense	Exon 10 of 10	ENSP00000298171.2	P16473-1
	TSHR	ENST00000541158.6	TSL:5	c.2232C>A	p.Asn744Lys	missense	Exon 11 of 11	ENSP00000441235.2	P16473-1
	TSHR	ENST00000637447.1	TSL:5	n.1134C>A		non_coding_transcript_exon	Exon 1 of 2	ENSP00000490136.1	A0A1B0GUJ5

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD4 exome Cov.: 34

GnomAD4 genome Cov.: 32

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Benign	0.085
BayesDel_addAF	Benign	-0.24	T
BayesDel_noAF	Benign	-0.58
CADD	Benign	3.4
DANN	Benign	0.94
Eigen	Benign	-0.71
Eigen_PC	Benign	-0.60
FATHMM_MKL	Benign	0.41	N
LIST_S2	Benign	0.56	T
M_CAP	Benign	0.016	T
MetaRNN	Benign	0.095	T
MetaSVM	Benign	-0.93	T
PhyloP100		0.028
PrimateAI	Benign	0.35	T
PROVEAN	Benign	-0.020	N
REVEL	Benign	0.078
Sift	Benign	0.21	T
Sift4G	Benign	0.41	T
gMVP		0.36
Mutation Taster		=99/1	polymorphism

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

MaxEntScan Visualizer can be used to analyze the impact of this mutation on the neighboring sequence.

Other links and lift over

hg19: chr14-81610634;