rs1555842652
Positions:
Variant summary
Our verdict is Uncertain significance. Variant got 3 ACMG points: 5P and 2B. PM1PM2PP2BP4_Moderate
The NM_006892.4(DNMT3B):c.2346A>C(p.Lys782Asn) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant was absent in control chromosomes in GnomAD project. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).
Frequency
Genomes: not found (cov: 32)
Consequence
DNMT3B
NM_006892.4 missense
NM_006892.4 missense
Scores
1
11
7
Clinical Significance
Conservation
PhyloP100: 1.50
Genes affected
DNMT3B (HGNC:2979): (DNA methyltransferase 3 beta) CpG methylation is an epigenetic modification that is important for embryonic development, imprinting, and X-chromosome inactivation. Studies in mice have demonstrated that DNA methylation is required for mammalian development. This gene encodes a DNA methyltransferase which is thought to function in de novo methylation, rather than maintenance methylation. The protein localizes primarily to the nucleus and its expression is developmentally regulated. Mutations in this gene cause the immunodeficiency-centromeric instability-facial anomalies (ICF) syndrome. Eight alternatively spliced transcript variants have been described. The full length sequences of variants 4 and 5 have not been determined. [provided by RefSeq, May 2011]
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ACMG classification
Classification made for transcript
Verdict is Uncertain_significance. Variant got 3 ACMG points.
PM1
?
In a domain SAM-dependent MTase C5-type (size 278) in uniprot entity DNM3B_HUMAN there are 46 pathogenic changes around while only 2 benign (96%) in NM_006892.4
PM2
?
Very rare variant in population databases, with high coverage;
PP2
?
Missense variant where missense usually causes diseases, DNMT3B
BP4
?
Computational evidence support a benign effect (MetaRNN=0.24466735).
Transcripts
RefSeq
Gene | Transcript | HGVSc | HGVSp | Effect | #exon/exons | MANE | UniProt |
---|---|---|---|---|---|---|---|
DNMT3B | NM_006892.4 | c.2346A>C | p.Lys782Asn | missense_variant | 22/23 | ENST00000328111.6 |
Ensembl
Gene | Transcript | HGVSc | HGVSp | Effect | #exon/exons | TSL | MANE | Appris | UniProt |
---|---|---|---|---|---|---|---|---|---|
DNMT3B | ENST00000328111.6 | c.2346A>C | p.Lys782Asn | missense_variant | 22/23 | 1 | NM_006892.4 | A2 |
Frequencies
GnomAD3 genomes ? Cov.: 32
GnomAD3 genomes
?
Cov.:
32
GnomAD4 exome Cov.: 31
GnomAD4 exome
Cov.:
31
GnomAD4 genome ? Cov.: 32
GnomAD4 genome
?
Cov.:
32
ClinVar
Significance: Uncertain significance
Submissions summary: Uncertain:1
Revision: criteria provided, single submitter
LINK: link
Submissions by phenotype
Centromeric instability of chromosomes 1,9 and 16 and immunodeficiency Uncertain:1
Uncertain significance, criteria provided, single submitter | clinical testing | Invitae | Mar 06, 2020 | 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 do not agree on the potential impact of this missense change (SIFT: "Deleterious"; PolyPhen-2: "Benign"; Align-GVGD: "Class C0"). This variant has not been reported in the literature in individuals with DNMT3B-related disease. This variant is not present in population databases (ExAC no frequency). This sequence change replaces lysine with asparagine at codon 782 of the DNMT3B protein (p.Lys782Asn). The lysine residue is weakly conserved and there is a moderate physicochemical difference between lysine and asparagine. - |
Computational scores
Source:
Name
Calibrated prediction
Score
Prediction
AlphaMissense
Pathogenic
BayesDel_addAF
Benign
T
BayesDel_noAF
Benign
CADD
Uncertain
DANN
Uncertain
DEOGEN2
Uncertain
D;.;.
Eigen
Benign
Eigen_PC
Benign
FATHMM_MKL
Uncertain
D
LIST_S2
Uncertain
D;D;D
M_CAP
Uncertain
D
MetaRNN
Benign
T;T;T
MetaSVM
Uncertain
D
MutationAssessor
Uncertain
M;.;.
MutationTaster
Benign
D;D;D;D;N;N;N
PrimateAI
Benign
T
PROVEAN
Uncertain
D;D;D
REVEL
Uncertain
Sift
Uncertain
D;D;D
Sift4G
Uncertain
D;D;D
Polyphen
B;B;B
Vest4
MutPred
Loss of methylation at K782 (P = 8e-04);.;.;
MVP
MPC
ClinPred
D
GERP RS
Varity_R
gMVP
Splicing
Name
Calibrated prediction
Score
Prediction
SpliceAI score (max)
Details are displayed if max score is > 0.2
Find out detailed SpliceAI scores and Pangolin per-transcript scores at