Genetic Variant NM_024757.5:c.576G>A (chr9-137717116-G-A) – ACMG Classification: Benign (-14 pts)

Variant summary

Our verdict is Benign. The variant received -14 ACMG points: 0P and 14B. BP4_StrongBP6BP7BS1BS2

The NM_024757.5(EHMT1):c.576G>A(p.Pro192Pro) variant causes a synonymous change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00019 in 1,612,530 control chromosomes in the GnomAD database, including 2 homozygotes. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Conflicting classifications of pathogenicity (no stars). Synonymous variant affecting the same amino acid position (i.e. P192P) has been classified as Likely benign.

Frequency

Genomes: 𝑓 0.00031 ( 0 hom., cov: 31)

Exomes 𝑓: 0.00018 ( 2 hom. )

Consequence

EHMT1
NM_024757.5 synonymous

Scores

Clinical Significance

Conflicting classifications of pathogenicity criteria provided, conflicting classifications U:1B:4

Conservation

PhyloP100: -2.40

Publications

0 publications found

Variant links:

Genes affected

EHMT1 (HGNC:24650): (euchromatic histone lysine methyltransferase 1) The protein encoded by this gene is a histone methyltransferase that methylates the lysine-9 position of histone H3. This action marks the genomic region packaged with these methylated histones for transcriptional repression. This protein may be involved in the silencing of MYC- and E2F-responsive genes and therefore could play a role in the G0/G1 cell cycle transition. Defects in this gene are a cause of chromosome 9q subtelomeric deletion syndrome (9q-syndrome, also known as Kleefstra syndrome). Alternative splicing results in multiple transcript variants. [provided by RefSeq, Aug 2017]

EHMT1 Gene-Disease associations (from GenCC):

Kleefstra syndrome
Inheritance: AD Classification: DEFINITIVE Submitted by: ClinGen
Kleefstra syndrome 1
Inheritance: AD Classification: DEFINITIVE, STRONG Submitted by: Ambry Genetics, G2P, Labcorp Genetics (formerly Invitae)

EHMT1 links:

Genome browser will be placed here

ACMG classification

Classification was made for transcript

Our verdict: Benign. The variant received -14 ACMG points.

BP4

Computational evidence support a benign effect (BayesDel_noAF=-0.9).

BP6

Variant 9-137717116-G-A is Benign according to our data. Variant chr9-137717116-G-A is described in ClinVar as Conflicting_classifications_of_pathogenicity. ClinVar VariationId is 210928.

BP7

Synonymous conserved (PhyloP=-2.39 with no splicing effect.

BS1

Variant frequency is greater than expected in population amr. GnomAd4 allele frequency = 0.000309 (47/152304) while in subpopulation AMR AF = 0.00098 (15/15304). AF 95% confidence interval is 0.000604. There are 0 homozygotes in GnomAd4. There are 24 alleles in the male GnomAd4 subpopulation. Median coverage is 31. This position passed quality control check.

BS2

High AC in GnomAd4 at 47 AD gene.

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_024757.5. You can select a different transcript below to see updated ACMG assignments.

RefSeq Transcripts

Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein
EHMT1	NM_024757.5	MANE Select	c.576G>A	p.Pro192Pro	synonymous	Exon 3 of 27	NP_079033.4
EHMT1	NM_001354263.2		c.576G>A	p.Pro192Pro	synonymous	Exon 3 of 27	NP_001341192.1
EHMT1	NM_001354259.2		c.483G>A	p.Pro161Pro	synonymous	Exon 2 of 16	NP_001341188.1

Ensembl Transcripts

Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
EHMT1	ENST00000460843.6	TSL:5 MANE Select	c.576G>A	p.Pro192Pro	synonymous	Exon 3 of 27	ENSP00000417980.1	Q9H9B1-1
EHMT1	ENST00000462484.5	TSL:1	c.576G>A	p.Pro192Pro	synonymous	Exon 3 of 16	ENSP00000417328.1	Q9H9B1-4
EHMT1	ENST00000896765.1		c.576G>A	p.Pro192Pro	synonymous	Exon 3 of 28	ENSP00000566824.1

Frequencies

GnomAD3 genomes

AF:

0.000309

AC:

AN:

152186

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.000145

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.000981

Gnomad ASJ

AF:

0.00

Gnomad EAS

AF:

0.00

Gnomad SAS

AF:

0.00

Gnomad FIN

AF:

0.00

Gnomad MID

AF:

0.00633

Gnomad NFE

AF:

0.000338

Gnomad OTH

AF:

0.000478

GnomAD2 exomes

AF:

0.000258

AC:

AN:

244304

AF XY:

0.000284

show subpopulations

Gnomad AFR exome

AF:

0.000270

Gnomad AMR exome

AF:

0.000522

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.00

Gnomad FIN exome

AF:

0.0000467

Gnomad NFE exome

AF:

0.000266

Gnomad OTH exome

AF:

0.000834

GnomAD4 exome

AF:

0.000177

AC:

259

AN:

1460226

Hom.:

Cov.:

AF XY:

0.000179

AC XY:

130

AN XY:

726432

show subpopulations

African (AFR)

AF:

0.00125

AC:

AN:

33480

American (AMR)

AF:

0.000537

AC:

AN:

44706

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

26136

East Asian (EAS)

AF:

0.0000504

AC:

AN:

39700

South Asian (SAS)

AF:

0.0000580

AC:

AN:

86258

European-Finnish (FIN)

AF:

0.0000193

AC:

AN:

51926

Middle Eastern (MID)

AF:

0.00417

AC:

AN:

5754

European-Non Finnish (NFE)

AF:

0.000124

AC:

138

AN:

1111900

Other (OTH)

AF:

0.000381

AC:

AN:

60366

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.478

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Age Distribution

Exome Het

Exome Hom

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

GnomAD4 genome

AF:

0.000309

AC:

AN:

152304

Hom.:

Cov.:

AF XY:

0.000322

AC XY:

AN XY:

74468

show subpopulations

African (AFR)

AF:

0.000144

AC:

AN:

41574

American (AMR)

AF:

0.000980

AC:

AN:

15304

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

3472

East Asian (EAS)

AF:

0.00

AC:

AN:

5174

South Asian (SAS)

AF:

0.00

AC:

AN:

4828

European-Finnish (FIN)

AF:

0.00

AC:

AN:

10624

Middle Eastern (MID)

AF:

0.00680

AC:

AN:

294

European-Non Finnish (NFE)

AF:

0.000338

AC:

AN:

68010

Other (OTH)

AF:

0.000473

AC:

AN:

2112

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.501

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:

0.000330

Hom.:

Bravo

AF:

0.000314

Asia WGS

AF:

0.000289

AC:

AN:

3478

EpiCase

AF:

0.000709

EpiControl

AF:

0.000474

ClinVar

ClinVar submissions

Significance:Conflicting classifications of pathogenicity

Revision:criteria provided, conflicting classifications

View on ClinVar

Pathogenic

VUS

Benign

Condition

not provided (2)

Inborn genetic diseases (1)

Kleefstra syndrome 1 (1)

not specified (1)

Computational scores

Source: dbNSFP v4.9

Name

Calibrated prediction

Score

Prediction

BayesDel_noAF

Benign

-0.90

CADD

Benign

0.14

(source)

DANN

Benign

0.62

PhyloP100

-2.4

RBP_binding_hub_radar

0.0

RBP_regulation_power_radar

1.7

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

Computational scores

Splicing

Publications

Other links and lift over