rs763502466

Variant names:

• chr19-10133685-C-A
• rs763502466
• NM_001130823.3:c.4881G>T

Your query was ambiguous. Multiple possible variants found:

• chr19-10133685-C-A
• chr19-10133685-C-T

Variant summary

Our verdict is Uncertain significance. The variant received 0 ACMG points: 2P and 2B. PM2 BP4_Moderate

The NM_001130823.3(DNMT1):​c.4881G>T​(p.Glu1627Asp) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000000692 in 1,444,874 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 14/22 in silico tools predict 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. E1627E) has been classified as Likely benign.

• Frequency:
  • Genomes: not found (cov: 32)
  • Exomes 𝑓: 6.9e-7 (0 hom.)
• Consequence: DNMT1 NM_001130823.3 missense
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: 0.396
• Publications: 0 publications found

Genes affected

DNMT1 (HGNC:2976): (DNA methyltransferase 1) This gene encodes an enzyme that transfers methyl groups to cytosine nucleotides of genomic DNA. This protein is the major enzyme responsible for maintaining methylation patterns following DNA replication and shows a preference for hemi-methylated DNA. Methylation of DNA is an important component of mammalian epigenetic gene regulation. Aberrant methylation patterns are found in human tumors and associated with developmental abnormalities. Variation in this gene has been associated with cerebellar ataxia, deafness, and narcolepsy, and neuropathy, hereditary sensory, type IE. Alternative splicing results in multiple transcript variants. [provided by RefSeq, Jan 2016]

DNMT1 Gene-Disease associations (from GenCC):

• autosomal dominant cerebellar ataxia, deafness and narcolepsy

  Inheritance: AD Classification: DEFINITIVE, STRONG, SUPPORTIVE Submitted by: ClinGen, Genomics England PanelApp, PanelApp Australia, Orphanet, Labcorp Genetics (formerly Invitae)
• hereditary sensory neuropathy-deafness-dementia syndrome

  Inheritance: AD Classification: STRONG, SUPPORTIVE Submitted by: PanelApp Australia, Labcorp Genetics (formerly Invitae), Orphanet

ACMG classification

Our verdict: Uncertain_significance. The variant received 0 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• BP4: Computational evidence support a benign effect (MetaRNN=0.06954986).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
DNMT1	NM_001130823.3	c.4881G>T	p.Glu1627Asp	missense_variant	Exon 41 of 41	ENST00000359526.9	NP_001124295.1
DNMT1	NM_001318730.2	c.4842G>T	p.Glu1614Asp	missense_variant	Exon 40 of 40		NP_001305659.1
DNMT1	NM_001379.4	c.4833G>T	p.Glu1611Asp	missense_variant	Exon 40 of 40		NP_001370.1
DNMT1	NM_001318731.2	c.4518G>T	p.Glu1506Asp	missense_variant	Exon 41 of 41		NP_001305660.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
DNMT1	ENST00000359526.9	c.4881G>T	p.Glu1627Asp	missense_variant	Exon 41 of 41	1	NM_001130823.3	ENSP00000352516.3

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD4 exome AF: 6.92e-7 AC: 1 AN: 1444874 Hom.: 0 Cov.: 31 AF XY: 0.00 AC XY: 0 AN XY: 717028

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

African (AFR) AF: 0.00 AC: 0 AN: 33050

American (AMR) AF: 0.00 AC: 0 AN: 42966

Ashkenazi Jewish (ASJ) AF: 0.00 AC: 0 AN: 25772

East Asian (EAS) AF: 0.0000256 AC: 1 AN: 39048

South Asian (SAS) AF: 0.00 AC: 0 AN: 83418

European-Finnish (FIN) AF: 0.00 AC: 0 AN: 52346

Middle Eastern (MID) AF: 0.00 AC: 0 AN: 5716

European-Non Finnish (NFE) AF: 0.00 AC: 0 AN: 1102870

Other (OTH) AF: 0.00 AC: 0 AN: 59688

⚠️ 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.

GnomAD4 genome Cov.: 32

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Benign	0.096
BayesDel_addAF	Benign	-0.24	T
BayesDel_noAF	Benign	-0.58
CADD	Benign	19
DANN	Uncertain	0.99
DEOGEN2	Benign	0.41	T;.
Eigen	Benign	-0.53
Eigen_PC	Benign	-0.53
FATHMM_MKL	Benign	0.27	N
LIST_S2	Benign	0.56	T;T
M_CAP	Benign	0.0063	T
MetaRNN	Benign	0.070	T;T
MetaSVM	Benign	-1.1	T
MutationAssessor	Uncertain	2.2	M;.
PhyloP100		0.40
PrimateAI	Benign	0.35	T
PROVEAN	Benign	-0.77	N;N
REVEL	Benign	0.042
Sift	Benign	0.075	T;T
Sift4G	Benign	0.12	T;T
Polyphen		0.0010	B;B
Vest4		0.13
MVP		0.40
MPC		0.93
ClinPred		0.60	D
GERP RS		1.4
RBP_binding_hub_radar		0.0
RBP_regulation_power_radar		1.7
Varity_R		0.043
gMVP		0.29
Mutation Taster		=88/12	polymorphism

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

Other links and lift over

dbSNP: rs763502466; hg19: chr19-10244361;