rs587776818

Variant names:

• chr17-41624214-AGGTAGGAGGCCAGGC-A
• rs57674130
• NM_000422.3:c.281_295delGCCTGGCCTCCTACC

Variant summary

Our verdict is Likely pathogenic. The variant received 6 ACMG points: 6P and 0B. PM1 PM4 PP3 PP5

The NM_000422.3(KRT17):​c.281_295delGCCTGGCCTCCTACC​(p.Arg94_Tyr98del) variant causes a disruptive inframe deletion change involving the alteration of a 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 DEL_BIG, and the frequency of such variant types in population databases may be underestimated and unreliable. Variant has been reported in ClinVar as Pathogenic (no stars).

• Frequency: Genomes: not found (cov: 33)
• Consequence: KRT17 NM_000422.3 disruptive_inframe_deletion
• Clinical Significance: Pathogenic no assertion criteria provided P:1 O:1
• Conservation: PhyloP100: 9.32
• Publications: 1 publications found

Genes affected

KRT17 (HGNC:6427): (keratin 17) This gene encodes the type I intermediate filament chain keratin 17, expressed in nail bed, hair follicle, sebaceous glands, and other epidermal appendages. Mutations in this gene lead to Jackson-Lawler type pachyonychia congenita and steatocystoma multiplex. [provided by RefSeq, Aug 2008]

KRT17 Gene-Disease associations (from GenCC):

• sebocystomatosis

  Inheritance: AD Classification: DEFINITIVE, STRONG, SUPPORTIVE Submitted by: G2P, Orphanet, Labcorp Genetics (formerly Invitae), Genomics England PanelApp
• pachyonychia congenita 2

  Inheritance: AD Classification: STRONG Submitted by: Labcorp Genetics (formerly Invitae), Genomics England PanelApp
• pachyonychia congenita

  Inheritance: AD Classification: SUPPORTIVE Submitted by: Orphanet

ACMG classification

Our verdict: Likely_pathogenic. The variant received 6 ACMG points.

• PM1: In a hotspot region, there are 9 aminoacids with missense pathogenic changes in the window of +-8 aminoacids around while only 0 benign, 2 uncertain in NM_000422.3
• PM4: Nonframeshift variant in NON repetitive region in NM_000422.3.
• PP3: No computational evidence supports a deleterious effect, but strongly conserved according to phyloP
• PP5: Variant 17-41624214-AGGTAGGAGGCCAGGC-A is Pathogenic according to our data. Variant chr17-41624214-AGGTAGGAGGCCAGGC-A is described in ClinVar as Pathogenic. ClinVar VariationId is 14593.Status of the report is no_assertion_criteria_provided, 0 stars.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
KRT17	NM_000422.3	c.281_295delGCCTGGCCTCCTACC	p.Arg94_Tyr98del	disruptive_inframe_deletion	Exon 1 of 8	ENST00000311208.13	NP_000413.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
KRT17	ENST00000311208.13	c.281_295delGCCTGGCCTCCTACC	p.Arg94_Tyr98del	disruptive_inframe_deletion	Exon 1 of 8	1	NM_000422.3	ENSP00000308452.8

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: Pathogenic

Submissions summary: Pathogenic:1 Other:1

Revision: no assertion criteria provided

Submissions by phenotype

Pachyonychia congenita 2 Pathogenic:1

May 01, 2001

OMIM

Significance: Pathogenic

Review Status: no assertion criteria provided

Collection Method: literature only

not provided Other:1

Epithelial Biology; Institute of Medical Biology, Singapore

Significance: not provided

Review Status: no classification provided

Collection Method: literature only

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
PhyloP100		9.3
Mutation Taster		=2/198	disease causing (ClinVar)

Splicing

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

Other links and lift over

dbSNP: rs57674130; hg19: chr17-39780466;