NM_006892.4:c.2232-367C>T

Variant names:

• chr20-32804971-C-T
• rs6058893
• NM_006892.4:c.2232-367C>T

Variant summary

Our verdict is Benign. Variant got -12 ACMG points: 0P and 12B. BP4_Strong BA1

The NM_006892.4(DNMT3B):​c.2232-367C>T variant causes a intron change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.524 in 151,908 control chromosomes in the GnomAD database, including 22,699 homozygotes. In-silico tool predicts a benign outcome for this variant. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar.

• Frequency: Genomes: 𝑓 0.52 (22699 hom., cov: 30)
• Consequence: DNMT3B NM_006892.4 intron
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: 0.332

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]

ACMG classification

Verdict is Benign. Variant got -12 ACMG points.

• BP4: Computational evidence support a benign effect (BayesDel_noAF=-0.88).
• BA1: GnomAd4 highest subpopulation (EAS) allele frequency at 95% confidence interval = 0.901 is higher than 0.05.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
DNMT3B	NM_006892.4	c.2232-367C>T		intron_variant	Intron 20 of 22	ENST00000328111.6	NP_008823.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
DNMT3B	ENST00000328111.6	c.2232-367C>T		intron_variant	Intron 20 of 22	1	NM_006892.4	ENSP00000328547.2

Frequencies

GnomAD3 genomes AF: 0.524 AC: 79482 AN: 151788 Hom.: 22673 Cov.: 30

Gnomad AFR AF: 0.698

Gnomad AMI AF: 0.489

Gnomad AMR AF: 0.555

Gnomad ASJ AF: 0.431

Gnomad EAS AF: 0.923

Gnomad SAS AF: 0.655

Gnomad FIN AF: 0.398

Gnomad MID AF: 0.354

Gnomad NFE AF: 0.398

Gnomad OTH AF: 0.481

We have no GnomAD4 exomes data on this position. Probably position not covered by the project.

GnomAD4 genome AF: 0.524 AC: 79560 AN: 151908 Hom.: 22699 Cov.: 30 AF XY: 0.529 AC XY: 39251 AN XY: 74218

Gnomad4 AFR AF: 0.697

Gnomad4 AMR AF: 0.555

Gnomad4 ASJ AF: 0.431

Gnomad4 EAS AF: 0.923

Gnomad4 SAS AF: 0.654

Gnomad4 FIN AF: 0.398

Gnomad4 NFE AF: 0.398

Gnomad4 OTH AF: 0.481

Alfa AF: 0.460 Hom.: 4837

Bravo AF: 0.544

Asia WGS AF: 0.748 AC: 2598 AN: 3478

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
BayesDel_noAF	Benign	-0.88
CADD	Benign	3.4
DANN	Benign	0.70

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: rs6058893; hg19: chr20-31392777;