Genetic Variant EZH2:p.Pro219Pro (chr7-148827235-A-G) – ACMG Classification: Benign (-19 pts)

Variant summary

Our verdict is Benign. The variant received -19 ACMG points: 0P and 19B. BP4_ModerateBP6_Very_StrongBP7BS1BS2

The NM_004456.5(EZH2):c.657T>C(p.Pro219Pro) variant causes a synonymous change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000486 in 1,613,884 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Likely benign (★★).

Frequency

Genomes: 𝑓 0.00034 ( 0 hom., cov: 33)

Exomes 𝑓: 0.00050 ( 0 hom. )

Consequence

EZH2
NM_004456.5 synonymous

Scores

Clinical Significance

Benign/Likely benign criteria provided, multiple submitters, no conflicts U:1B:5

Conservation

PhyloP100: 1.42

Publications

1 publications found

Variant links:

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]

EZH2 Gene-Disease associations (from GenCC):

Weaver syndrome
Inheritance: AD Classification: DEFINITIVE, STRONG, SUPPORTIVE Submitted by: Orphanet, Labcorp Genetics (formerly Invitae), G2P, ClinGen

EZH2 links:

Genome browser will be placed here

ACMG classification

Classification was made for transcript

Our verdict: Benign. The variant received -19 ACMG points.

BP4

Computational evidence support a benign effect (BayesDel_noAF=-0.45).

BP6

Variant 7-148827235-A-G is Benign according to our data. Variant chr7-148827235-A-G is described in ClinVar as Benign/Likely_benign. ClinVar VariationId is 359283.Status of the report is criteria_provided_multiple_submitters_no_conflicts, 2 stars.

BP7

Synonymous conserved (PhyloP=1.42 with no splicing effect.

BS1

Variant frequency is greater than expected in population nfe. GnomAd4 allele frequency = 0.000341 (52/152330) while in subpopulation NFE AF = 0.000617 (42/68020). AF 95% confidence interval is 0.000469. There are 0 homozygotes in GnomAd4. There are 21 alleles in the male GnomAd4 subpopulation. Median coverage is 33. This position passed quality control check.

BS2

High AC in GnomAd4 at 52 AD gene.

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_004456.5. You can select a different transcript below to see updated ACMG assignments.

RefSeq Transcripts

Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein
EZH2	NM_004456.5	MANE Select	c.657T>C	p.Pro219Pro	synonymous	Exon 7 of 20	NP_004447.2
EZH2	NM_001203247.2		c.657T>C	p.Pro219Pro	synonymous	Exon 7 of 20	NP_001190176.1
EZH2	NM_001203248.2		c.630T>C	p.Pro210Pro	synonymous	Exon 7 of 20	NP_001190177.1

Ensembl Transcripts

Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein
EZH2	ENST00000320356.7	TSL:1 MANE Select	c.657T>C	p.Pro219Pro	synonymous	Exon 7 of 20	ENSP00000320147.2
EZH2	ENST00000460911.5	TSL:1	c.657T>C	p.Pro219Pro	synonymous	Exon 7 of 20	ENSP00000419711.1
EZH2	ENST00000350995.6	TSL:1	c.540T>C	p.Pro180Pro	synonymous	Exon 6 of 19	ENSP00000223193.2

Frequencies

GnomAD3 genomes

AF:

0.000342

AC:

AN:

152212

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.000193

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.00

Gnomad ASJ

AF:

0.00

Gnomad EAS

AF:

0.00

Gnomad SAS

AF:

0.000207

Gnomad FIN

AF:

0.0000942

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.000617

Gnomad OTH

AF:

0.00

GnomAD2 exomes

AF:

0.000418

AC:

105

AN:

251188

AF XY:

0.000376

show subpopulations

Gnomad AFR exome

AF:

0.0000616

Gnomad AMR exome

AF:

0.0000869

Gnomad ASJ exome

AF:

0.0000992

Gnomad EAS exome

AF:

0.00

Gnomad FIN exome

AF:

0.000324

Gnomad NFE exome

AF:

0.000810

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.000501

AC:

732

AN:

1461554

Hom.:

Cov.:

AF XY:

0.000517

AC XY:

376

AN XY:

727094

show subpopulations

African (AFR)

AF:

0.0000598

AC:

AN:

33472

American (AMR)

AF:

0.0000671

AC:

AN:

44714

Ashkenazi Jewish (ASJ)

AF:

0.0000383

AC:

AN:

26124

East Asian (EAS)

AF:

0.00

AC:

AN:

39646

South Asian (SAS)

AF:

0.0000232

AC:

AN:

86218

European-Finnish (FIN)

AF:

0.000206

AC:

AN:

53372

Middle Eastern (MID)

AF:

0.00

AC:

AN:

5766

European-Non Finnish (NFE)

AF:

0.000631

AC:

702

AN:

1111856

Other (OTH)

AF:

0.000182

AC:

AN:

60386

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.458

Heterozygous variant carriers

107

143

179

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Age Distribution

Exome Het

Variant carriers

112

140

<30

30-35

35-40

40-45

45-50

50-55

55-60

60-65

65-70

70-75

75-80

>80

Age

GnomAD4 genome

AF:

0.000341

AC:

AN:

152330

Hom.:

Cov.:

AF XY:

0.000282

AC XY:

AN XY:

74492

show subpopulations

African (AFR)

AF:

0.000192

AC:

AN:

41576

American (AMR)

AF:

0.00

AC:

AN:

15302

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

3472

East Asian (EAS)

AF:

0.00

AC:

AN:

5188

South Asian (SAS)

AF:

0.000207

AC:

AN:

4832

European-Finnish (FIN)

AF:

0.0000942

AC:

AN:

10620

Middle Eastern (MID)

AF:

0.00

AC:

AN:

294

European-Non Finnish (NFE)

AF:

0.000617

AC:

AN:

68020

Other (OTH)

AF:

0.00

AC:

AN:

2114

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.502

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Age Distribution

Genome Het

Variant carriers

<30

30-35

35-40

40-45

45-50

50-55

55-60

60-65

65-70

70-75

75-80

>80

Age

Alfa

AF:

0.000352

Hom.:

Bravo

AF:

0.000329

EpiCase

AF:

0.000327

EpiControl

AF:

0.000296

ClinVar

Significance: Benign/Likely benign

Submissions summary: Uncertain:1Benign:5

Revision: criteria provided, multiple submitters, no conflicts

LINK: link

Submissions by phenotype

not provided

Uncertain:1Benign:2

Department of Pathology and Laboratory Medicine, Sinai Health System

Significance:Uncertain significance

Review Status:no assertion criteria provided

Collection Method:clinical testing

Jul 27, 2020

GeneDx

Significance:Likely benign

Review Status:criteria provided, single submitter

Collection Method:clinical testing

Sep 01, 2024

CeGaT Center for Human Genetics Tuebingen

Significance:Likely benign

Review Status:criteria provided, single submitter

Collection Method:clinical testing

EZH2: BP4, BP7

not specified

Benign:2

Nov 15, 2017

Genetic Services Laboratory, University of Chicago

Significance:Likely benign

Review Status:criteria provided, single submitter

Collection Method:clinical testing

Feb 16, 2025

Laboratory of Genetics, Children's Clinical University Hospital Latvia

Significance:Likely benign

Review Status:criteria provided, single submitter

Collection Method:clinical testing

Weaver syndrome

Benign:1

Nov 25, 2024

Labcorp Genetics (formerly Invitae), Labcorp

Significance:Benign

Review Status:criteria provided, single submitter

Collection Method:clinical testing

Computational scores

Source: dbNSFP v4.9

Name

Calibrated prediction

Score

Prediction

BayesDel_noAF

Benign

-0.45

CADD

Benign

9.8

(source)

DANN

Benign

0.74

PhyloP100

1.4

Mutation Taster

=100/0

polymorphism

(source)

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

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Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

Publications

ACMG classification

Variant Effect in Transcripts

RefSeq Transcripts

Ensembl Transcripts

Frequencies

Age Distribution

Age Distribution

ClinVar

Submissions by phenotype

Computational scores

Splicing

Publications

Other links and lift over