dbSNP rs1043305457: EHMT1:p.Ala2Ala (chr9-137619034-C-A) – ACMG Classification: Likely_benign (-1 pts)

Variant summary

Our verdict is Likely benign. The variant received -1 ACMG points: 2P and 3B. PM2BP4_ModerateBP7

The NM_024757.5(EHMT1):c.6C>A(p.Ala2Ala) variant causes a synonymous change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00000207 in 967,218 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar. Synonymous variant affecting the same amino acid position (i.e. A2A) has been classified as Likely benign.

Frequency

Genomes: 𝑓 0.0000068 ( 0 hom., cov: 31)

Exomes 𝑓: 0.0000012 ( 0 hom. )

Consequence

EHMT1
NM_024757.5 synonymous

Scores

Clinical Significance

Not reported in ClinVar

Conservation

PhyloP100: 2.67

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 links:

ENSG00000283411 (HGNC:):

ENSG00000283411 links:

ARRDC1-AS1 (HGNC:23395): (ARRDC1 antisense RNA 1) This transcribed locus is thought to be non-coding. Alternative splicing results in multiple transcript variants. [provided by RefSeq, Jun 2014]

ARRDC1-AS1 links:

Genome browser will be placed here

ACMG classification

Classification was made for transcript

Our verdict: Likely_benign. The variant received -1 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

BP4

Computational evidence support a benign effect (BayesDel_noAF=-0.39).

BP7

Synonymous conserved (PhyloP=2.67 with no splicing effect.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
EHMT1	NM_024757.5 link	c.6C>A	p.Ala2Ala	synonymous_variant	Exon 1 of 27	ENST00000460843.6	NP_079033.4	Q9H9B1-1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
EHMT1	ENST00000460843.6 link	c.6C>A	p.Ala2Ala	synonymous_variant	Exon 1 of 27	5	NM_024757.5	ENSP00000417980.1		Q9H9B1-1

Frequencies

GnomAD3 genomes

AF:

0.00000684

AC:

AN:

146196

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.00

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.00

Gnomad ASJ

AF:

0.00

Gnomad EAS

AF:

0.00

Gnomad SAS

AF:

0.000208

Gnomad FIN

AF:

0.00

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.00

Gnomad OTH

AF:

0.00

GnomAD4 exome

AF:

0.00000122

AC:

AN:

821022

Hom.:

Cov.:

AF XY:

0.00

AC XY:

AN XY:

379710

show subpopulations

⚠️ The allele balance in gnomAD version 4 Exomes is significantly skewed from the expected value of 0.5.

African (AFR)

AF:

0.00

AC:

AN:

15520

American (AMR)

AF:

0.00

AC:

AN:

1078

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

5162

East Asian (EAS)

AF:

0.00

AC:

AN:

3648

South Asian (SAS)

AF:

0.00

AC:

AN:

16986

European-Finnish (FIN)

AF:

0.00

AC:

AN:

528

Middle Eastern (MID)

AF:

0.00

AC:

AN:

1604

European-Non Finnish (NFE)

AF:

0.00000133

AC:

AN:

749578

Other (OTH)

AF:

0.00

AC:

AN:

26918

⚠️ The allele balance in gnomAD4 Exomes is highly skewed from 0.5 (p-value = 0.000000), which strongly suggests a high chance of mosaicism in these individuals.

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.375

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

GnomAD4 genome

AF:

0.00000684

AC:

AN:

146196

Hom.:

Cov.:

AF XY:

0.00

AC XY:

AN XY:

71088

show subpopulations

African (AFR)

AF:

0.00

AC:

AN:

40808

American (AMR)

AF:

0.00

AC:

AN:

14714

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

3392

East Asian (EAS)

AF:

0.00

AC:

AN:

5080

South Asian (SAS)

AF:

0.000208

AC:

AN:

4816

European-Finnish (FIN)

AF:

0.00

AC:

AN:

8360

Middle Eastern (MID)

AF:

0.00

AC:

AN:

306

European-Non Finnish (NFE)

AF:

0.00

AC:

AN:

65798

Other (OTH)

AF:

0.00

AC:

AN:

2010

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.475

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Alfa

AF:

0.00

Hom.:

Bravo

AF:

0.00000378

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

BayesDel_noAF

Benign

-0.39

CADD

Benign

(source)

DANN

Benign

0.85

PhyloP100

2.7

PromoterAI

-0.25

Neutral

(source)

RBP_binding_hub_radar

0.0

RBP_regulation_power_radar

2.1

Mutation Taster

=299/1

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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rs1043305457

Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

Publications

ACMG classification

Transcripts

RefSeq

Ensembl

Frequencies

Age Distribution

ClinVar

Computational scores

Splicing

Publications

Other links and lift over