19-10133699-T-C

Variant names:

Variant summary

Our verdict is Benign. The variant received -8 ACMG points: 0P and 8B. BP4_StrongBS2

The NM_001130823.3(DNMT1):c.4867A>G(p.Lys1623Glu) variant causes a missense, splice region change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0000044 in 1,592,420 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 16/22 in silico tools predict a benign outcome for this variant. 1/1 splice prediction tools predict no significant impact on normal splicing. Variant has been reported in ClinVar as Uncertain significance (★).

Frequency

Genomes: 𝑓 0.0000066 ( 0 hom., cov: 32)

Exomes 𝑓: 0.0000042 ( 0 hom. )

Consequence

DNMT1
NM_001130823.3 missense, splice_region

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 1.65

Publications

2 publications found

Variant links:

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

DNMT1 links:

Genome browser will be placed here

ACMG classification

Classification was made for transcript

Our verdict: Benign. The variant received -8 ACMG points.

BP4

Computational evidence support a benign effect (MetaRNN=0.058110416).

BS2

High AC in GnomAdExome4 at 6 AD gene.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
DNMT1	NM_001130823.3 link	c.4867A>G	p.Lys1623Glu	missense_variant, splice_region_variant	Exon 41 of 41	ENST00000359526.9	NP_001124295.1	P26358-2I6L9H2
DNMT1	NM_001318730.2 link	c.4828A>G	p.Lys1610Glu	missense_variant, splice_region_variant	Exon 40 of 40		NP_001305659.1	P26358Q59FP7I6L9H2
DNMT1	NM_001379.4 link	c.4819A>G	p.Lys1607Glu	missense_variant, splice_region_variant	Exon 40 of 40		NP_001370.1	P26358-1I6L9H2
DNMT1	NM_001318731.2 link	c.4504A>G	p.Lys1502Glu	missense_variant, splice_region_variant	Exon 41 of 41		NP_001305660.1	P26358I6L9H2

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
DNMT1	ENST00000359526.9 link	c.4867A>G	p.Lys1623Glu	missense_variant, splice_region_variant	Exon 41 of 41	1	NM_001130823.3	ENSP00000352516.3		P26358-2

Frequencies

GnomAD3 genomes

AF:

0.00000657

AC:

AN:

152166

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.00

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:

0.000478

GnomAD2 exomes

AF:

0.00

AC:

AN:

210930

AF XY:

0.00

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 FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.00

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.00000417

AC:

AN:

1440254

Hom.:

Cov.:

AF XY:

0.00000420

AC XY:

AN XY:

714324

show subpopulations

African (AFR)

AF:

0.00

AC:

AN:

32926

American (AMR)

AF:

0.00

AC:

AN:

42328

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

25704

East Asian (EAS)

AF:

0.00

AC:

AN:

38782

South Asian (SAS)

AF:

0.00

AC:

AN:

82864

European-Finnish (FIN)

AF:

0.00

AC:

AN:

52076

Middle Eastern (MID)

AF:

0.00

AC:

AN:

5720

European-Non Finnish (NFE)

AF:

0.00000545

AC:

AN:

1100344

Other (OTH)

AF:

0.00

AC:

AN:

59510

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.442

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

GnomAD4 genome

AF:

0.00000657

AC:

AN:

152166

Hom.:

Cov.:

AF XY:

0.00

AC XY:

AN XY:

74350

show subpopulations

African (AFR)

AF:

0.00

AC:

AN:

41428

American (AMR)

AF:

0.00

AC:

AN:

15274

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

3472

East Asian (EAS)

AF:

0.00

AC:

AN:

5206

South Asian (SAS)

AF:

0.00

AC:

AN:

4838

European-Finnish (FIN)

AF:

0.00

AC:

AN:

10614

Middle Eastern (MID)

AF:

0.00

AC:

AN:

316

European-Non Finnish (NFE)

AF:

0.00

AC:

AN:

68016

Other (OTH)

AF:

0.000478

AC:

AN:

2090

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.575

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Alfa

AF:

0.00

Hom.:

Bravo

AF:

0.0000113

ExAC

AF:

0.00000826

AC:

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

Hereditary sensory neuropathy-deafness-dementia syndrome

Uncertain:1

Apr 04, 2022

Labcorp Genetics (formerly Invitae), Labcorp

Significance:Uncertain significance

Review Status:criteria provided, single submitter

Collection Method:clinical testing

This variant is not present in population databases (gnomAD no frequency). In summary, the available evidence is currently insufficient to determine the role of this variant in disease. Therefore, it has been classified as a Variant of Uncertain Significance. Algorithms developed to predict the effect of missense changes on protein structure and function are either unavailable or do not agree on the potential impact of this missense change (SIFT: "Deleterious"; PolyPhen-2: "Not Available"; Align-GVGD: "Class C0"). This variant has not been reported in the literature in individuals affected with DNMT1-related conditions. This sequence change replaces lysine, which is basic and polar, with glutamic acid, which is acidic and polar, at codon 1623 of the DNMT1 protein (p.Lys1623Glu). -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.069

BayesDel_addAF

Benign

-0.18

BayesDel_noAF

Benign

-0.50

CADD

Benign

(source)

DANN

Benign

0.68

DEOGEN2

Benign

0.32

T;.

Eigen

Benign

-0.80

Eigen_PC

Benign

-0.73

FATHMM_MKL

Benign

0.22

LIST_S2

Benign

0.65

T;T

M_CAP

Benign

0.011

MetaRNN

Benign

0.058

T;T

MetaSVM

Benign

-0.97

MutationAssessor

Benign

2.0

M;.

PhyloP100

1.6

PrimateAI

Benign

0.40

PROVEAN

Benign

-0.17

N;N

REVEL

Benign

0.048

Sift

Benign

0.78

T;T

Sift4G

Benign

1.0

T;T

Polyphen

0.0010

B;B

Vest4

0.20

MVP

0.46

MPC

1.4

ClinPred

0.083

GERP RS

3.5

Varity_R

0.045

gMVP

0.40

Mutation Taster

=84/16

polymorphism

(source)

Splicing

Name

Calibrated prediction

Score

Prediction

SpliceAI score (max)

0.020

Details are displayed if max score is > 0.2

Find out detailed SpliceAI scores and Pangolin per-transcript scores at spliceailookup.broadinstitute.org

Publications

You must be logged in to view publications. This limit was set because tens of millions (!) of queries from AI bots are generated daily.

19-10133699-T-C

Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

Publications

ACMG classification

Transcripts

RefSeq

Ensembl

Frequencies

Age Distribution

ClinVar

Submissions by phenotype

Computational scores

Splicing

Publications

Other links and lift over