rs3812496

chr9-137716744-T-Achr9-137716744-T-Cchr9-137716744-T-G

Variant summary

Our verdict is Uncertain significance. Variant got 0 ACMG points: 2P and 2B. PM2 BP4_Moderate

The NM_024757.5(EHMT1):c.204T>A(p.Asn68Lys) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant was absent in control chromosomes in GnomAD project. In-silico tool predicts a benign outcome for this variant. 15/21 in silico tools predict a benign outcome for this variant. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar. Another variant affecting the same amino acid position, but resulting in a different missense (i.e. N68H) has been classified as Likely benign.

• Frequency: Genomes: not found (cov: 31)
• Consequence: EHMT1 NM_024757.5 missense
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: -1.03

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]

ACMG classification

Verdict is Uncertain_significance. Variant got 0 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• BP4: Computational evidence support a benign effect (MetaRNN=0.090336144).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
EHMT1	NM_024757.5	c.204T>A	p.Asn68Lys	missense_variant	3/27	ENST00000460843.6

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
EHMT1	ENST00000460843.6	c.204T>A	p.Asn68Lys	missense_variant	3/27	5	NM_024757.5

Frequencies

GnomAD3 genomes Cov.: 31

GnomAD4 exome Cov.: 31

GnomAD4 genome Cov.: 31

Bravo AF: 0.00000756

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Benign	0.13
BayesDel_addAF	Benign	-0.24	T
BayesDel_noAF	Benign	-0.59
Cadd	Benign	4.5
Dann	Benign	0.95
DEOGEN2	Benign	0.079	T;.;T;T;T;T;T;.;.;T
Eigen	Benign	-1.1
Eigen_PC	Benign	-1.2
FATHMM_MKL	Benign	0.18	N
LIST_S2	Uncertain	0.86	D;D;D;D;D;D;D;D;D;D
M_CAP	Benign	0.062	D
MetaRNN	Benign	0.090	T;T;T;T;T;T;T;T;T;T
MetaSVM	Benign	-0.92	T
MutationAssessor	Benign	0.55	N;N;.;.;.;.;.;.;.;.
MutationTaster	Benign	1.0	N;N;N
PrimateAI	Benign	0.30	T
PROVEAN	Benign	-0.85	N;N;.;.;.;.;.;.;.;.
REVEL	Benign	0.020
Sift	Benign	0.052	T;T;.;.;.;.;.;.;.;.
Sift4G	Benign	0.20	T;T;T;T;.;.;T;T;.;T
Polyphen		0.025	B;B;.;.;.;.;.;.;.;.
Vest4		0.21
MutPred		0.14		Gain of ubiquitination at N68 (P = 0.0018);Gain of ubiquitination at N68 (P = 0.0018);.;.;Gain of ubiquitination at N68 (P = 0.0018);.;.;.;.;.;
MVP		0.43
MPC		0.052
ClinPred		0.061	T
GERP RS		-4.8
RBP_binding_hub_radar		0.0
RBP_regulation_power_radar		1.1
Varity_R		0.039
gMVP		0.091

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: rs3812496; hg19: chr9-140611196;