Variant summary

Our verdict is Benign. The variant received -20 ACMG points: 0P and 20B. BP4_StrongBP6_Very_StrongBS1BS2

The NM_024757.5(EHMT1):c.311C>T(p.Ala104Val) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000117 in 1,613,248 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 14/22 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Likely benign (★★). Synonymous variant affecting the same amino acid position (i.e. A104A) has been classified as Benign.

Frequency

Genomes: 𝑓 0.00026 ( 0 hom., cov: 31)

Exomes 𝑓: 0.00010 ( 0 hom. )

Consequence

EHMT1
NM_024757.5 missense

Scores

Clinical Significance

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

Conservation

PhyloP100: 2.13

Publications

5 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: G2P, Ambry Genetics, 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 -20 ACMG points.

BP4

Computational evidence support a benign effect (MetaRNN=0.036156118).

BP6

Variant 9-137716851-C-T is Benign according to our data. Variant chr9-137716851-C-T is described in ClinVar as Benign/Likely_benign. ClinVar VariationId is 462992.Status of the report is criteria_provided_multiple_submitters_no_conflicts, 2 stars.

BS1

Variant frequency is greater than expected in population afr. GnomAd4 allele frequency = 0.000263 (40/152238) while in subpopulation AFR AF = 0.000675 (28/41512). AF 95% confidence interval is 0.000479. There are 0 homozygotes in GnomAd4. There are 17 alleles in the male GnomAd4 subpopulation. Median coverage is 31. This position passed quality control check.

BS2

High AC in GnomAd4 at 40 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.311C>T	p.Ala104Val	missense	Exon 3 of 27	NP_079033.4
EHMT1	NM_001354263.2		c.311C>T	p.Ala104Val	missense	Exon 3 of 27	NP_001341192.1
EHMT1	NM_001354259.2		c.218C>T	p.Ala73Val	missense	Exon 2 of 16	NP_001341188.1

Ensembl Transcripts

Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein
EHMT1	ENST00000460843.6	TSL:5 MANE Select	c.311C>T	p.Ala104Val	missense	Exon 3 of 27	ENSP00000417980.1
EHMT1	ENST00000462484.5	TSL:1	c.311C>T	p.Ala104Val	missense	Exon 3 of 16	ENSP00000417328.1
EHMT1	ENST00000637161.1	TSL:5	c.218C>T	p.Ala73Val	missense	Exon 3 of 27	ENSP00000490328.1

Frequencies

GnomAD3 genomes

AF:

0.000256

AC:

AN:

152120

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.000652

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.000131

Gnomad ASJ

AF:

0.00

Gnomad EAS

AF:

0.00

Gnomad SAS

AF:

0.000414

Gnomad FIN

AF:

0.00

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.0000882

Gnomad OTH

AF:

0.000957

GnomAD2 exomes

AF:

0.000143

AC:

AN:

250944

AF XY:

0.000162

show subpopulations

Gnomad AFR exome

AF:

0.000493

Gnomad AMR exome

AF:

0.00

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.00

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.0000441

Gnomad OTH exome

AF:

0.000327

GnomAD4 exome

AF:

0.000101

AC:

148

AN:

1461010

Hom.:

Cov.:

AF XY:

0.000132

AC XY:

AN XY:

726768

show subpopulations

African (AFR)

AF:

0.000448

AC:

AN:

33478

American (AMR)

AF:

0.0000224

AC:

AN:

44708

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

26126

East Asian (EAS)

AF:

0.00

AC:

AN:

39700

South Asian (SAS)

AF:

0.000684

AC:

AN:

86258

European-Finnish (FIN)

AF:

0.00

AC:

AN:

52710

Middle Eastern (MID)

AF:

0.00

AC:

AN:

5764

European-Non Finnish (NFE)

AF:

0.0000540

AC:

AN:

1111890

Other (OTH)

AF:

0.000215

AC:

AN:

60376

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.465

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Age Distribution

Exome 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

GnomAD4 genome

AF:

0.000263

AC:

AN:

152238

Hom.:

Cov.:

AF XY:

0.000228

AC XY:

AN XY:

74428

show subpopulations

African (AFR)

AF:

0.000675

AC:

AN:

41512

American (AMR)

AF:

0.000131

AC:

AN:

15298

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

3470

East Asian (EAS)

AF:

0.00

AC:

AN:

5188

South Asian (SAS)

AF:

0.000414

AC:

AN:

4826

European-Finnish (FIN)

AF:

0.00

AC:

AN:

10620

Middle Eastern (MID)

AF:

0.00

AC:

AN:

294

European-Non Finnish (NFE)

AF:

0.0000882

AC:

AN:

68006

Other (OTH)

AF:

0.000947

AC:

AN:

2112

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.503

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:

0.000186

Hom.:

Bravo

AF:

0.000253

ESP6500AA

AF:

0.00159

AC:

ESP6500EA

AF:

0.00

AC:

ExAC

AF:

0.000157

AC:

EpiCase

AF:

0.00

EpiControl

AF:

0.000119

ClinVar

ClinVar submissions as Germline

Significance:Benign/Likely benign

Revision:criteria provided, multiple submitters, no conflicts

View on ClinVar

Pathogenic

VUS

Benign

Condition

Kleefstra syndrome 1 (2)

EHMT1-related disorder (1)

Inborn genetic diseases (1)

not provided (1)

Computational scores

Source: dbNSFP v4.9

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.088

BayesDel_addAF

Benign

-0.38

BayesDel_noAF

Benign

-0.38

CADD

Benign

(source)

DANN

Uncertain

1.0

DEOGEN2

Benign

0.056

Eigen

Benign

-0.72

Eigen_PC

Benign

-0.63

FATHMM_MKL

Benign

0.71

LIST_S2

Benign

0.84

M_CAP

Uncertain

0.10

MetaRNN

Benign

0.036

MetaSVM

Benign

-0.96

MutationAssessor

Benign

-0.34

PhyloP100

2.1

PrimateAI

Benign

0.46

PROVEAN

Benign

-0.87

REVEL

Benign

0.062

Sift

Uncertain

0.0020

Sift4G

Uncertain

0.026

Polyphen

0.066

Vest4

0.14

MVP

0.38

MPC

0.046

ClinPred

0.045

GERP RS

4.0

RBP_binding_hub_radar

0.0

RBP_regulation_power_radar

1.1

Varity_R

0.092

gMVP

0.16

Mutation Taster

=99/1

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

ClinVar submissions as Germline

Computational scores

Splicing

Publications

Other links and lift over