Genetic Variant DNMT3A:p.Glu545Gly (chr2-25244573-T-C) – ACMG Classification: Likely_pathogenic (6 pts)

Variant summary

Our verdict is Likely pathogenic. The variant received 6 ACMG points: 6P and 0B. PM1PM2PP5_Moderate

The NM_022552.5(DNMT3A):c.1634A>G(p.Glu545Gly) variant causes a missense change. The variant was absent in control chromosomes in GnomAD project. Variant has been reported in ClinVar as Likely pathogenic (★).

Frequency

Genomes: not found (cov: 33)

Exomes 𝑓: 0.0 ( 0 hom. )

Failed GnomAD Quality Control

Consequence

DNMT3A
NM_022552.5 missense

Scores

Clinical Significance

Likely pathogenic criteria provided, single submitter P:1

Conservation

PhyloP100: 6.24

Publications

0 publications found

Variant links:

Genes affected

DNMT3A (HGNC:2978): (DNA methyltransferase 3 alpha) 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 that is thought to function in de novo methylation, rather than maintenance methylation. The protein localizes to the cytoplasm and nucleus and its expression is developmentally regulated. [provided by RefSeq, Mar 2016]

DNMT3A Gene-Disease associations (from GenCC):

Tatton-Brown-Rahman overgrowth syndrome
Inheritance: AD Classification: DEFINITIVE, STRONG, SUPPORTIVE Submitted by: Illumina, Ambry Genetics, ClinGen, G2P, Orphanet, Labcorp Genetics (formerly Invitae)
Heyn-Sproul-Jackson syndrome
Inheritance: AD Classification: STRONG, MODERATE, LIMITED Submitted by: Ambry Genetics, ClinGen, G2P, Labcorp Genetics (formerly Invitae)

DNMT3A links:

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ACMG classification

Classification was made for transcript

Our verdict: Likely_pathogenic. The variant received 6 ACMG points.

PM1

In a hotspot region, there are 6 aminoacids with missense pathogenic changes in the window of +-8 aminoacids around while only 0 benign, 2 uncertain in NM_022552.5

PM2

Very rare variant in population databases, with high coverage;

PP5

Variant 2-25244573-T-C is Pathogenic according to our data. Variant chr2-25244573-T-C is described in ClinVar as Likely_pathogenic. ClinVar VariationId is 559889.Status of the report is criteria_provided_single_submitter, 1 stars.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
DNMT3A	NM_022552.5 link	c.1634A>G	p.Glu545Gly	missense_variant	Exon 14 of 23	ENST00000321117.10	NP_072046.2	Q9Y6K1-1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
DNMT3A	ENST00000321117.10 link	c.1634A>G	p.Glu545Gly	missense_variant	Exon 14 of 23	1	NM_022552.5	ENSP00000324375.5		Q9Y6K1-1

Frequencies

GnomAD3 genomes

Cov.:

GnomAD4 exome

Data not reliable, filtered out with message: AC0

AF:

0.00

AC:

AN:

1461878

Hom.:

Cov.:

AF XY:

0.00

AC XY:

AN XY:

727242

African (AFR)

AF:

0.00

AC:

AN:

33480

American (AMR)

AF:

0.00

AC:

AN:

44722

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

26136

East Asian (EAS)

AF:

0.00

AC:

AN:

39700

South Asian (SAS)

AF:

0.00

AC:

AN:

86256

European-Finnish (FIN)

AF:

0.00

AC:

AN:

53416

Middle Eastern (MID)

AF:

0.00

AC:

AN:

5768

European-Non Finnish (NFE)

AF:

0.00

AC:

AN:

1112004

Other (OTH)

AF:

0.00

AC:

AN:

60396

GnomAD4 genome

Cov.:

ClinVar

Significance: Likely pathogenic

Submissions summary: Pathogenic:1

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

Tatton-Brown-Rahman overgrowth syndrome

Pathogenic:1

Aug 17, 2017

Equipe Genetique des Anomalies du Developpement, Université de Bourgogne

Significance:Likely pathogenic

Review Status:criteria provided, single submitter

Collection Method:clinical testing

- -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Pathogenic

0.99

BayesDel_addAF

Pathogenic

0.36

BayesDel_noAF

Pathogenic

0.27

CADD

Pathogenic

(source)

DANN

Uncertain

1.0

DEOGEN2

Pathogenic

0.87

D;.;D;T

Eigen

Benign

0.044

Eigen_PC

Uncertain

0.22

FATHMM_MKL

Pathogenic

0.98

LIST_S2

Pathogenic

0.98

.;D;D;D

M_CAP

Uncertain

0.11

MetaRNN

Uncertain

0.62

D;D;D;D

MetaSVM

Benign

-0.62

MutationAssessor

Uncertain

2.1

M;.;M;.

PhyloP100

6.2

PrimateAI

Uncertain

0.78

PROVEAN

Pathogenic

-6.1

D;D;D;D

REVEL

Uncertain

0.61

Sift

Uncertain

0.0060

D;D;D;D

Sift4G

Uncertain

0.027

D;D;D;D

Polyphen

0.084

B;.;B;.

Vest4

0.81

MutPred

0.47

Gain of sheet (P = 0.1208);.;Gain of sheet (P = 0.1208);.;

MVP

0.26

MPC

2.0

ClinPred

0.98

GERP RS

5.7

Varity_R

0.67

gMVP

0.77

Mutation Taster

=2/98

disease causing (ClinVar)

(source)

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

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Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

Publications

ACMG classification

Transcripts

RefSeq

Ensembl

Frequencies

ClinVar

Submissions by phenotype

Computational scores

Splicing

Publications

Other links and lift over