chr2-42048424-CGGGCCCGGGG-C

Position:

• chr2-42048424-CGGGCCCGGGG-C

Variant summary

Our verdict is Pathogenic. Variant got 12 ACMG points: 12P and 0B. PVS1 PM2 PP5_Moderate

The NM_138370.3(PKDCC):​c.226_235del​(p.Gly76ArgfsTer9) variant causes a frameshift change involving the alteration of a non-conserved nucleotide. The variant was absent in control chromosomes in GnomAD project. Variant has been reported in ClinVar as Pathogenic (★). Variant results in nonsense mediated mRNA decay.

• Frequency: Genomes: not found (cov: 30)
• Consequence: PKDCC NM_138370.3 frameshift
• Clinical Significance: Pathogenic criteria provided, single submitter P:1
• Conservation: PhyloP100: 1.84

Genes affected

PKDCC (HGNC:25123): (protein kinase domain containing, cytoplasmic) Enables non-membrane spanning protein tyrosine kinase activity. Involved in peptidyl-tyrosine phosphorylation and skeletal system development. Located in extracellular region. [provided by Alliance of Genome Resources, Apr 2022]

ACMG classification

Verdict is Pathogenic. Variant got 12 ACMG points.

• PVS1: Loss of function variant, product undergoes nonsense mediated mRNA decay. LoF is a known mechanism of disease.
• PM2: Very rare variant in population databases, with high coverage
• PP5: Variant 2-42048424-CGGGCCCGGGG-C is Pathogenic according to our data. Variant chr2-42048424-CGGGCCCGGGG-C is described in ClinVar as [Pathogenic]. Clinvar id is 2753588.Status of the report is criteria_provided_single_submitter, 1 stars.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
PKDCC	NM_138370.3	c.226_235del	p.Gly76ArgfsTer9	frameshift_variant	1/7	ENST00000294964.6

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
PKDCC	ENST00000294964.6	c.226_235del	p.Gly76ArgfsTer9	frameshift_variant	1/7	1	NM_138370.3	P1
PKDCC	ENST00000401498.6	c.198+28_198+37del		intron_variant, NMD_transcript_variant		5

Frequencies

GnomAD3 genomes Cov.: 30

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

GnomAD4 genome Cov.: 30

ClinVar

Significance: Pathogenic

Submissions summary: Pathogenic:1

Revision: criteria provided, single submitter

Submissions by phenotype

not provided Pathogenic:1

Pathogenic, criteria provided, single submitter

clinical testing

Invitae

Oct 05, 2023

This sequence change creates a premature translational stop signal (p.Gly76Argfs*9) in the PKDCC gene. It is expected to result in an absent or disrupted protein product. Loss-of-function variants in PKDCC are known to be pathogenic (PMID: 19097194, 30478137). The frequency data for this variant in the population databases is considered unreliable, as metrics indicate insufficient coverage at this position in the gnomAD database. This variant has not been reported in the literature in individuals affected with PKDCC-related conditions. For these reasons, this variant has been classified as Pathogenic. -

Computational scores

Source: dbNSFP v4.3

Splicing

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

Publications

No publications associated with this variant yet.

Other links and lift over

hg19: chr2-42275564;