rs193921146

Positions:

• chr7-148829752-CATA-C

Variant summary

Our verdict is Likely pathogenic. Variant got 6 ACMG points: 6P and 0B. PM1 PM2 PM4_Supporting PP5

The NM_004456.5(EZH2):​c.457_459del​(p.Tyr153del) variant causes a inframe deletion 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: EZH2 NM_004456.5 inframe_deletion
• Clinical Significance: Pathogenic no assertion criteria provided P:1
• Conservation: PhyloP100: 8.98

Genes affected

EZH2 (HGNC:3527): (enhancer of zeste 2 polycomb repressive complex 2 subunit) This gene encodes a member of the Polycomb-group (PcG) family. PcG family members form multimeric protein complexes, which are involved in maintaining the transcriptional repressive state of genes over successive cell generations. This protein associates with the embryonic ectoderm development protein, the VAV1 oncoprotein, and the X-linked nuclear protein. This protein may play a role in the hematopoietic and central nervous systems. Multiple alternatively splcied transcript variants encoding distinct isoforms have been identified for this gene. [provided by RefSeq, Feb 2011]

ACMG classification

Verdict is Likely_pathogenic. Variant got 6 ACMG points.

• PM1: In a turn (size 2) in uniprot entity EZH2_HUMAN there are 5 pathogenic changes around while only 0 benign (100%) in NM_004456.5
• PM2: Very rare variant in population databases, with high coverage
• PM4: Nonframeshift variant in NON repetitive region in NM_004456.5. Strenght limited to Supporting due to length of the change: 1aa.
• PP5: Variant 7-148829752-CATA-C is Pathogenic according to our data. Variant chr7-148829752-CATA-C is described in ClinVar as [Pathogenic]. Clinvar id is 30198.Status of the report is no_assertion_criteria_provided, 0 stars. Variant chr7-148829752-CATA-C is described in Lovd as [Pathogenic].

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
EZH2	NM_004456.5	c.457_459del	p.Tyr153del	inframe_deletion	5/20	ENST00000320356.7

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
EZH2	ENST00000320356.7	c.457_459del	p.Tyr153del	inframe_deletion	5/20	1	NM_004456.5	P4

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

Weaver syndrome Pathogenic:1

Pathogenic, no assertion criteria provided

literature only

OMIM

Jan 13, 2012

- -

Computational scores

Source: dbNSFP v4.3

Splicing

Name	Calibrated prediction	Score	Prediction
SpliceAI score (max)		0.0		Details are displayed if max score is > 0.2

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

Publications

LitVar

Other links and lift over

dbSNP: rs193921146; hg19: chr7-148526844;