rs1057516362

chr3-120675846-CCC-CAAT

Variant summary

Our verdict is Pathogenic. Variant got 10 ACMG points: 10P and 0B. PVS1 PP5_Moderate

The NM_000187.4(HGD):c.31_32delinsATT(p.Gly11IlefsTer3) variant causes a frameshift change. Variant has been reported in ClinVar as Likely pathogenic (★). Synonymous variant affecting the same amino acid position (i.e. G11G) has been classified as Likely benign.

• Frequency: Genomes: not found (cov: 33)
• Consequence: HGD NM_000187.4 frameshift
• Clinical Significance: Likely pathogenic criteria provided, single submitter P:2
• Conservation: PhyloP100: 6.85

Genes affected

HGD (HGNC:4892): (homogentisate 1,2-dioxygenase) This gene encodes the enzyme homogentisate 1,2 dioxygenase. This enzyme is involved in the catabolism of the amino acids tyrosine and phenylalanine. Mutations in this gene are the cause of the autosomal recessive metabolism disorder alkaptonuria.[provided by RefSeq, May 2010]

ACMG classification

Verdict is Pathogenic. Variant got 10 ACMG points.

• PVS1: Loss of function variant, product does not undergo nonsense mediated mRNA decay. Variant located near the start codon (<100nt), not predicted to undergo nonsense mediated mRNA decay. There are 372 pathogenic variants in the truncated region.
• PP5: Variant 3-120675847-CC-AAT is Pathogenic according to our data. Variant chr3-120675847-CC-AAT is described in ClinVar as [Likely_pathogenic]. Clinvar id is 370267.Status of the report is criteria_provided_single_submitter, 1 stars.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
HGD	NM_000187.4	c.31_32delinsATT	p.Gly11IlefsTer3	frameshift_variant	2/14	ENST00000283871.10

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
HGD	ENST00000283871.10	c.31_32delinsATT	p.Gly11IlefsTer3	frameshift_variant	2/14	1	NM_000187.4	P1

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

Significance: Likely pathogenic

Submissions summary: Pathogenic:2

Revision: criteria provided, single submitter

Submissions by phenotype

Alkaptonuria Pathogenic:2

Pathogenic, no assertion criteria provided	research	Department Of Human Genetics, Institute Of Clinical And Translational Research, Biomedical Research Center, Slovak Academy Of Sciences	-	The variant was originally described in AKU patient in PMID:9529363. It has been submitted to the HGD gene mutation database (http://hgddatabase.cvtisr.sk/, DB-ID: AKU_00005). -
Likely pathogenic, criteria provided, single submitter	clinical testing	Counsyl	Dec 31, 2015	- -

Computational scores

Source: dbNSFP v4.3

Splicing

Find out detailed SpliceAI scores and Pangolin per-transcript scores at spliceailookup.broadinstitute.org

Publications

LitVar

Other links and lift over

dbSNP: rs1057516362; hg19: chr3-120394694;