9-137716788-A-C

Position:

• chr9-137716788-A-C

Variant summary

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

The NM_024757.5(EHMT1):​c.248A>C​(p.Asp83Ala) variant causes a missense change. The variant was absent in control chromosomes in GnomAD project. In-silico tool predicts a benign outcome for this variant. 13/21 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. D83G) has been classified as Uncertain significance.

• Frequency: Genomes: not found (cov: 31)
• Consequence: EHMT1 NM_024757.5 missense
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: 6.28

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=0.16588026).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
EHMT1	NM_024757.5	c.248A>C	p.Asp83Ala	missense_variant	3/27	ENST00000460843.6

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
EHMT1	ENST00000460843.6	c.248A>C	p.Asp83Ala	missense_variant	3/27	5	NM_024757.5

Frequencies

GnomAD3 genomes Cov.: 31

GnomAD4 exome Cov.: 31

GnomAD4 genome Cov.: 31

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Benign	0.095
BayesDel_addAF	Benign	-0.070	T
BayesDel_noAF	Benign	-0.34
CADD	Benign	22
DANN	Uncertain	0.99
DEOGEN2	Benign	0.10	T;.;T;T;T;T;T;.;.;T
Eigen	Benign	0.19
Eigen_PC	Uncertain	0.25
FATHMM_MKL	Uncertain	0.93	D
LIST_S2	Benign	0.81	T;T;T;T;T;T;T;T;T;T
M_CAP	Uncertain	0.12	D
MetaRNN	Benign	0.17	T;T;T;T;T;T;T;T;T;T
MetaSVM	Benign	-0.43	T
MutationAssessor	Benign	0.55	N;N;.;.;.;.;.;.;.;.
MutationTaster	Benign	0.99	D;D;D
PrimateAI	Benign	0.34	T
PROVEAN	Benign	-0.95	N;N;.;.;.;.;.;.;.;.
REVEL	Benign	0.13
Sift	Uncertain	0.010	D;D;.;.;.;.;.;.;.;.
Sift4G	Uncertain	0.025	D;D;D;D;.;.;D;D;.;D
Polyphen		0.35	B;P;.;.;.;.;.;.;.;.
Vest4		0.30
MutPred		0.17		Loss of solvent accessibility (P = 0.0052);Loss of solvent accessibility (P = 0.0052);.;.;Loss of solvent accessibility (P = 0.0052);.;.;.;.;.;
MVP		0.41
MPC		0.094
ClinPred		0.54	D
GERP RS		5.8
RBP_binding_hub_radar		0.0
RBP_regulation_power_radar		1.1
Varity_R		0.097
gMVP		0.31

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: rs770735510; hg19: chr9-140611240;