chr9-137744082-G-T

Position:

• chr9-137744082-G-T

Variant summary

Our verdict is Likely benign. Variant got -2 ACMG points: 2P and 4B. PM2 BP4_Strong

The NM_024757.5(EHMT1):​c.1162G>T​(p.Ala388Ser) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00000657 in 152,170 control chromosomes in the GnomAD database, with no homozygous occurrence. 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.

• Frequency: Genomes: 𝑓 0.0000066 (0 hom., cov: 33)
• Consequence: EHMT1 NM_024757.5 missense
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: 0.0970

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 Likely_benign. Variant got -2 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• BP4: Computational evidence support a benign effect (MetaRNN=0.039355487).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
EHMT1	NM_024757.5	c.1162G>T	p.Ala388Ser	missense_variant	6/27	ENST00000460843.6	NP_079033.4

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
EHMT1	ENST00000460843.6	c.1162G>T	p.Ala388Ser	missense_variant	6/27	5	NM_024757.5	ENSP00000417980

Frequencies

GnomAD3 genomes AF: 0.00000657 AC: 1 AN: 152170 Hom.: 0 Cov.: 33

Gnomad AFR AF: 0.0000241

Gnomad AMI AF: 0.00

Gnomad AMR AF: 0.00

Gnomad ASJ AF: 0.00

Gnomad EAS AF: 0.00

Gnomad SAS AF: 0.00

Gnomad FIN AF: 0.00

Gnomad MID AF: 0.00

Gnomad NFE AF: 0.00

Gnomad OTH AF: 0.00

GnomAD4 exome Cov.: 34

GnomAD4 genome AF: 0.00000657 AC: 1 AN: 152170 Hom.: 0 Cov.: 33 AF XY: 0.00 AC XY: 0 AN XY: 74350

Gnomad4 AFR AF: 0.0000241

Gnomad4 AMR AF: 0.00

Gnomad4 ASJ AF: 0.00

Gnomad4 EAS AF: 0.00

Gnomad4 SAS AF: 0.00

Gnomad4 FIN AF: 0.00

Gnomad4 NFE AF: 0.00

Gnomad4 OTH AF: 0.00

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Benign	0.069
BayesDel_addAF	Benign	-0.24	T
BayesDel_noAF	Benign	-0.58
CADD	Benign	0.79
DANN	Benign	0.18
DEOGEN2	Benign	0.038	T;.;T;T;.;T;T;.
Eigen	Benign	-1.5
Eigen_PC	Benign	-1.5
FATHMM_MKL	Benign	0.14	N
LIST_S2	Benign	0.74	T;T;T;T;T;.;T;T
M_CAP	Benign	0.013	T
MetaRNN	Benign	0.039	T;T;T;T;T;T;T;T
MetaSVM	Benign	-0.97	T
MutationAssessor	Benign	0.69	N;N;.;.;.;.;.;.
MutationTaster	Benign	1.0	P;P;P
PrimateAI	Benign	0.29	T
PROVEAN	Benign	0.060	N;N;.;.;.;.;.;.
REVEL	Benign	0.015
Sift	Benign	0.52	T;T;.;.;.;.;.;.
Sift4G	Benign	0.93	T;T;.;.;.;.;.;.
Polyphen		0.0010	B;B;.;.;.;.;.;.
Vest4		0.047
MutPred		0.19		Gain of phosphorylation at A388 (P = 6e-04);Gain of phosphorylation at A388 (P = 6e-04);Gain of phosphorylation at A388 (P = 6e-04);.;.;.;.;.;
MVP		0.31
MPC		0.043
ClinPred		0.023	T
GERP RS		-0.31
RBP_binding_hub_radar		0.0
RBP_regulation_power_radar		1.7
Varity_R		0.060
gMVP		0.035

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: rs11137198; hg19: chr9-140638534;