rs1555257076

Variant names:

• chr13-28672416-TGAGGAT-ACC
• rs1555257076
• NM_015932.6:c.342_348delTGAGGATinsACC

Variant summary

Our verdict is Likely pathogenic. The variant received 7 ACMG points: 7P and 0B. PVS1_Strong PM2 PP5

The NM_015932.6(POMP):​c.342_348delTGAGGATinsACC​(p.Phe114LeufsTer18) variant causes a frameshift, missense 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 Pathogenic (no stars).

• Frequency: Genomes: not found (cov: 32)
• Consequence: POMP NM_015932.6 frameshift, missense
• Clinical Significance: Pathogenic no assertion criteria provided P:1
• Conservation: PhyloP100: 8.92
• Publications: 0 publications found

Genes affected

POMP (HGNC:20330): (proteasome maturation protein) The protein encoded by this gene is a molecular chaperone that binds 20S preproteasome components and is essential for 20S proteasome formation. The 20S proteasome is the proteolytically active component of the 26S proteasome complex. The encoded protein is degraded before the maturation of the 20S proteasome is complete. A variant in the 5' UTR of this gene has been associated with KLICK syndrome, a rare skin disorder.[provided by RefSeq, Aug 2010]

POMP Gene-Disease associations (from GenCC):

• proteasome-associated autoinflammatory syndrome 2

  Inheritance: AD Classification: STRONG, MODERATE Submitted by: Labcorp Genetics (formerly Invitae), Ambry Genetics
• keratosis linearis-ichthyosis congenita-sclerosing keratoderma syndrome

  Inheritance: AR Classification: STRONG, MODERATE, SUPPORTIVE, LIMITED Submitted by: Ambry Genetics, Labcorp Genetics (formerly Invitae), G2P, PanelApp Australia, Orphanet

ACMG classification

Our verdict: Likely_pathogenic. The variant received 7 ACMG points.

• PVS1: Loss of function variant, product does not undergo nonsense mediated mRNA decay. Variant is located in the 3'-most 50 bp of the penultimate exon, not predicted to undergo nonsense mediated mRNA decay. Fraction of 0.197 CDS is truncated, and there are 2 pathogenic variants in the truncated region.
• PM2: Very rare variant in population databases, with high coverage
• PP5: Variant 13-28672416-TGAGGAT-ACC is Pathogenic according to our data. Variant chr13-28672416-TGAGGAT-ACC is described in ClinVar as Pathogenic. ClinVar VariationId is 548960.Status of the report is no_assertion_criteria_provided, 0 stars.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
POMP	NM_015932.6	c.342_348delTGAGGATinsACC	p.Phe114LeufsTer18	frameshift_variant, missense_variant	Exon 5 of 6	ENST00000380842.5	NP_057016.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
POMP	ENST00000380842.5	c.342_348delTGAGGATinsACC	p.Phe114LeufsTer18	frameshift_variant, missense_variant	Exon 5 of 6	1	NM_015932.6	ENSP00000370222.4

Frequencies

GnomAD3 genomes Cov.: 32

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

GnomAD4 genome Cov.: 32

ClinVar

Significance: Pathogenic

Submissions summary: Pathogenic:1

Revision: no assertion criteria provided

Submissions by phenotype

Proteasome-associated autoinflammatory syndrome 2 Pathogenic:1

Jul 17, 2018

OMIM

Significance: Pathogenic

Review Status: no assertion criteria provided

Collection Method: literature only

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Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
PhyloP100		8.9
Mutation Taster		=6/194	disease causing

Splicing

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

Other links and lift over

dbSNP: rs1555257076; hg19: chr13-29246553;