NM_001145026.2:c.6881G>A

Variant names:

• chr12-80679004-G-A
• rs1555214288
• NM_001145026.2:c.6881G>A

Variant summary

Our verdict is Uncertain significance. The variant received 5 ACMG points: 5P and 0B. PVS1_Moderate PM2 PP5

The NM_001145026.2(PTPRQ):​c.6881G>A​(p.Trp2294*) variant causes a stop gained 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 Conflicting classifications of pathogenicity (no stars).

• Frequency: Genomes: not found (cov: 32)
• Consequence: PTPRQ NM_001145026.2 stop_gained
• Clinical Significance: Conflicting classifications of pathogenicity criteria provided, conflicting classifications P:2 U:1
• Conservation: PhyloP100: 7.29
• Publications: 6 publications found

Genes affected

PTPRQ (HGNC:9679): (protein tyrosine phosphatase receptor type Q) This locus encodes a member of the type III receptor-like protein-tyrosine phosphatase family. The encoded protein catalyzes the dephosphorylation of phosphotyrosine and phosphatidylinositol and plays roles in cellular proliferation and differentiation. Mutations at this locus have been linked to autosomal recessive deafness. [provided by RefSeq, Mar 2014]

PTPRQ Gene-Disease associations (from GenCC):

• autosomal recessive nonsyndromic hearing loss 84A

  Inheritance: AR, SD Classification: DEFINITIVE, STRONG, MODERATE Submitted by: G2P, Ambry Genetics, Labcorp Genetics (formerly Invitae), PanelApp Australia
• hearing loss, autosomal recessive

  Inheritance: AR Classification: DEFINITIVE, SUPPORTIVE Submitted by: ClinGen, Orphanet
• hearing loss, autosomal dominant 73

  Inheritance: AD, Unknown Classification: MODERATE, LIMITED Submitted by: PanelApp Australia, Ambry Genetics, Labcorp Genetics (formerly Invitae)
• autosomal dominant nonsyndromic hearing loss

  Inheritance: AD Classification: SUPPORTIVE Submitted by: Orphanet

ENSG00000304204 (HGNC:):

ACMG classification

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

• PVS1: Loss of function variant, product does not undergo nonsense mediated mRNA decay. Variant is located in the 3'-most exon, not predicted to undergo nonsense mediated mRNA decay. Fraction of 0.00275 CDS is truncated, and there are 1 pathogenic variants in the truncated region.
• PM2: Very rare variant in population databases, with high coverage
• PP5: Variant 12-80679004-G-A is Pathogenic according to our data. Variant chr12-80679004-G-A is described in ClinVar as Conflicting_classifications_of_pathogenicity. ClinVar VariationId is 438482.

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_001145026.2. You can select a different transcript below to see updated ACMG assignments.

RefSeq Transcripts

Selected	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	PTPRQ	NM_001145026.2	MANE Select	c.6881G>A	p.Trp2294*	stop_gained	Exon 45 of 45	NP_001138498.1

Ensembl Transcripts

Selected	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	PTPRQ	ENST00000644991.3	MANE Select	c.6881G>A	p.Trp2294*	stop_gained	Exon 45 of 45	ENSP00000495607.1
	PTPRQ	ENST00000616559.4	TSL:5	c.6980G>A	p.Trp2327*	stop_gained	Exon 45 of 45	ENSP00000483259.1
	ENSG00000304204	ENST00000801015.1		n.100+28105C>T		intron	N/A

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD4 exome Cov.: 31

GnomAD4 genome Cov.: 32

ClinVar

Significance: Conflicting classifications of pathogenicity

Submissions summary: Pathogenic:2 Uncertain:1

Revision: criteria provided, conflicting classifications

Submissions by phenotype

Hearing loss, autosomal dominant 73 Pathogenic:1 Uncertain:1

Jun 07, 2018

OMIM

Significance: Pathogenic

Review Status: no assertion criteria provided

Collection Method: literature only

Apr 16, 2018

SIB Swiss Institute of Bioinformatics

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: curation

This variant is interpreted as a Uncertain Significance, for Deafness, autosomal dominant 73, Autosomal Dominant inheritance. The following ACMG Tag(s) were applied: PM2 => Absent from controls (or at extremely low frequency if recessive) in Exome Sequencing Project, 1000 Genomes Project, or Exome Aggregation Consortium. PP1-Moderate => PP1 upgraded in strength to Moderate (PMID:29309402).

not provided Pathogenic:1

Oct 23, 2020

Institute of Medical Genetics and Applied Genomics, University Hospital Tübingen

Significance: Pathogenic

Review Status: criteria provided, single submitter

Collection Method: clinical testing

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
BayesDel_addAF	Pathogenic	0.62	D
BayesDel_noAF	Pathogenic	0.66
CADD	Pathogenic	48
DANN	Uncertain	0.99
Eigen	Pathogenic	1.2
Eigen_PC	Pathogenic	1.0
FATHMM_MKL	Pathogenic	0.98	D
PhyloP100		7.3
Vest4		0.33
ClinPred		1.0	D
GERP RS		5.6
Mutation Taster		=8/192	disease causing (ClinVar)

Splicing

Name	Calibrated prediction	Score	Prediction
SpliceAI score (max)		0.13		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: rs1555214288; hg19: chr12-81072783;