chr9-137744082-G-C

Position:

• chr9-137744082-G-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.1162G>C​(p.Ala388Pro) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00000205 in 1,461,714 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 14/21 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: not found (cov: 33)
  • Exomes 𝑓: 0.0000021 (0 hom.)
• 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 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=0.10213393).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
EHMT1	NM_024757.5	c.1162G>C	p.Ala388Pro	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>C	p.Ala388Pro	missense_variant	6/27	5	NM_024757.5	ENSP00000417980

Frequencies

GnomAD3 genomes Cov.: 33

GnomAD3 exomes AF: 0.00000800 AC: 2 AN: 249848 Hom.: 0 AF XY: 0.0000148 AC XY: 2 AN XY: 135224

Gnomad AFR exome AF: 0.00

Gnomad AMR exome AF: 0.00

Gnomad ASJ exome AF: 0.00

Gnomad EAS exome AF: 0.00

Gnomad SAS exome AF: 0.00

Gnomad FIN exome AF: 0.00

Gnomad NFE exome AF: 0.0000178

Gnomad OTH exome AF: 0.00

GnomAD4 exome AF: 0.00000205 AC: 3 AN: 1461714 Hom.: 0 Cov.: 34 AF XY: 0.00000275 AC XY: 2 AN XY: 727164

Gnomad4 AFR exome AF: 0.00

Gnomad4 AMR exome AF: 0.00

Gnomad4 ASJ exome AF: 0.00

Gnomad4 EAS exome AF: 0.00

Gnomad4 SAS exome AF: 0.00

Gnomad4 FIN exome AF: 0.00

Gnomad4 NFE exome AF: 0.00000270

Gnomad4 OTH exome AF: 0.00

GnomAD4 genome Cov.: 33

Bravo AF: 0.00000378

ExAC AF: 0.00000824 AC: 1

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Benign	0.075
BayesDel_addAF	Benign	-0.051	T
BayesDel_noAF	Benign	-0.31
CADD	Benign	4.7
DANN	Uncertain	0.98
DEOGEN2	Benign	0.087	T;.;T;T;.;T;T;.
Eigen	Benign	-0.88
Eigen_PC	Benign	-1.0
FATHMM_MKL	Benign	0.21	N
LIST_S2	Benign	0.67	T;T;T;T;T;.;T;T
M_CAP	Benign	0.039	D
MetaRNN	Benign	0.10	T;T;T;T;T;T;T;T
MetaSVM	Benign	-0.69	T
MutationAssessor	Benign	1.6	L;L;.;.;.;.;.;.
MutationTaster	Benign	1.0	P;P;P
PrimateAI	Benign	0.32	T
PROVEAN	Benign	-1.0	N;N;.;.;.;.;.;.
REVEL	Benign	0.10
Sift	Uncertain	0.0060	D;D;.;.;.;.;.;.
Sift4G	Benign	0.21	T;T;.;.;.;.;.;.
Polyphen		0.59	P;D;.;.;.;.;.;.
Vest4		0.12
MutPred		0.17		Gain of loop (P = 0.0013);Gain of loop (P = 0.0013);Gain of loop (P = 0.0013);.;.;.;.;.;
MVP		0.50
MPC		0.14
ClinPred		0.089	T
GERP RS		-0.31
Varity_R		0.32
gMVP		0.11

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;