11-2164236-GC-CA

Variant names:

• chr11-2164236-GC-CA
• NM_000360.4:c.1490_1491delGCinsTG
• TH p.Gly497Val

Variant summary

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

The NM_000360.4(TH):​c.1490_1491delGCinsTG​(p.Gly497Val) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant was absent in control chromosomes in GnomAD project. It is difficult to determine the true allele frequency of this variant because it is of type MNV, and the frequency of such variant types in population databases may be underestimated and unreliable. 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 Uncertain significance in ClinVar. Another variant affecting the same amino acid position, but resulting in a different missense (i.e. G497D) has been classified as Uncertain significance.

• Frequency: Genomes: not found (cov: 33)
• Consequence: TH NM_000360.4 missense
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: 2.88
• Publications: 0 publications found

Genes affected

TH (HGNC:11782): (tyrosine hydroxylase) The protein encoded by this gene is involved in the conversion of tyrosine to dopamine. It is the rate-limiting enzyme in the synthesis of catecholamines, hence plays a key role in the physiology of adrenergic neurons. Mutations in this gene have been associated with autosomal recessive Segawa syndrome. Alternatively spliced transcript variants encoding different isoforms have been noted for this gene. [provided by RefSeq, Jul 2008]

TH Gene-Disease associations (from GenCC):

• TH-deficient dopa-responsive dystonia

  Inheritance: AR Classification: DEFINITIVE, STRONG, SUPPORTIVE Submitted by: Ambry Genetics, Labcorp Genetics (formerly Invitae), Orphanet, G2P
• tyrosine hydroxylase deficiency

  Inheritance: AR Classification: DEFINITIVE Submitted by: Myriad Women’s Health, ClinGen

ENSG00000295384 (HGNC:):

ACMG classification

Our verdict: Uncertain_significance. The variant received 0 ACMG points.

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_000360.4. 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
	TH	NM_000360.4	MANE Select	c.1490_1491delGCinsTG	p.Gly497Val	missense	N/A	NP_000351.2	P07101-3
	TH	NM_199292.3		c.1583_1584delGCinsTG	p.Gly528Val	missense	N/A	NP_954986.2	P07101-1
	TH	NM_199293.3		c.1571_1572delGCinsTG	p.Gly524Val	missense	N/A	NP_954987.2	P07101-2

Ensembl Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	TH	ENST00000352909.8	TSL:1 MANE Select	c.1490_1491delGCinsTG	p.Gly497Val	missense	N/A	ENSP00000325951.4	P07101-3
	TH	ENST00000381178.5	TSL:1	c.1583_1584delGCinsTG	p.Gly528Val	missense	N/A	ENSP00000370571.1	P07101-1
	TH	ENST00000381175.5	TSL:1	c.1571_1572delGCinsTG	p.Gly524Val	missense	N/A	ENSP00000370567.1	P07101-2

Frequencies

GnomAD3 genomes Cov.: 33

We have no GnomAD4 exomes data on this position. Probably position not covered by the project.

GnomAD4 genome Cov.: 33

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
PhyloP100		2.9

Splicing

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: chr11-2185466;