chr19-10134105-G-A

Position:

• chr19-10134105-G-A

Variant summary

Our verdict is Benign. Variant got -20 ACMG points: 0P and 20B. BP4_Strong BP6_Very_Strong BS1 BS2

The NM_001130823.3(DNMT1):​c.4864+112C>T variant causes a intron change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00324 in 1,105,682 control chromosomes in the GnomAD database, including 86 homozygotes. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Benign (★★).

• Frequency:
  • Genomes: 𝑓 0.014 (50 hom., cov: 32)
  • Exomes 𝑓: 0.0015 (36 hom.)
• Consequence: DNMT1 NM_001130823.3 intron
• Clinical Significance: Benign criteria provided, multiple submitters, no conflicts B:2
• Conservation: PhyloP100: -0.135

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 (HGNC:):

ACMG classification

Verdict is Benign. Variant got -20 ACMG points.

• BP4: Computational evidence support a benign effect (BayesDel_noAF=-0.82).
• BP6: Variant 19-10134105-G-A is Benign according to our data. Variant chr19-10134105-G-A is described in ClinVar as [Benign]. Clinvar id is 1258099.Status of the report is criteria_provided_multiple_submitters_no_conflicts, 2 stars.
• BS1: Variant frequency is greater than expected in population afr. gnomad4 allele frequency = 0.0143 (2185/152352) while in subpopulation AFR AF= 0.0496 (2062/41586). AF 95% confidence interval is 0.0478. There are 50 homozygotes in gnomad4. There are 1051 alleles in male gnomad4 subpopulation. Median coverage is 32. This position pass quality control queck.
• BS2: High AC in GnomAd4 at 2185 AD gene.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
DNMT1	NM_001130823.3	c.4864+112C>T		intron_variant		ENST00000359526.9	NP_001124295.1
DNMT1	NM_001318730.2	c.4825+112C>T		intron_variant			NP_001305659.1
DNMT1	NM_001379.4	c.4816+112C>T		intron_variant			NP_001370.1
DNMT1	NM_001318731.2	c.4501+112C>T		intron_variant			NP_001305660.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
DNMT1	ENST00000359526.9	c.4864+112C>T		intron_variant		1	NM_001130823.3	ENSP00000352516.3

Frequencies

GnomAD3 genomes AF: 0.0143 AC: 2181 AN: 152234 Hom.: 50 Cov.: 32

Gnomad AFR AF: 0.0496

Gnomad AMI AF: 0.00

Gnomad AMR AF: 0.00622

Gnomad ASJ AF: 0.00

Gnomad EAS AF: 0.00

Gnomad SAS AF: 0.000207

Gnomad FIN AF: 0.00

Gnomad MID AF: 0.00316

Gnomad NFE AF: 0.0000588

Gnomad OTH AF: 0.0110

GnomAD4 exome AF: 0.00147 AC: 1401 AN: 953330 Hom.: 36 AF XY: 0.00117 AC XY: 579 AN XY: 494282

Gnomad4 AFR exome AF: 0.0487

Gnomad4 AMR exome AF: 0.00244

Gnomad4 ASJ exome AF: 0.00

Gnomad4 EAS exome AF: 0.00

Gnomad4 SAS exome AF: 0.0000807

Gnomad4 FIN exome AF: 0.00

Gnomad4 NFE exome AF: 0.0000411

Gnomad4 OTH exome AF: 0.00285

GnomAD4 genome AF: 0.0143 AC: 2185 AN: 152352 Hom.: 50 Cov.: 32 AF XY: 0.0141 AC XY: 1051 AN XY: 74502

Gnomad4 AFR AF: 0.0496

Gnomad4 AMR AF: 0.00621

Gnomad4 ASJ AF: 0.00

Gnomad4 EAS AF: 0.00

Gnomad4 SAS AF: 0.00

Gnomad4 FIN AF: 0.00

Gnomad4 NFE AF: 0.0000588

Gnomad4 OTH AF: 0.0109

Alfa AF: 0.00930 Hom.: 2

Bravo AF: 0.0159

Asia WGS AF: 0.00115 AC: 4 AN: 3478

ClinVar

Significance: Benign

Submissions summary: Benign:2

Revision: criteria provided, multiple submitters, no conflicts

Submissions by phenotype

not provided Benign:2

Benign, criteria provided, single submitter	not provided	Breakthrough Genomics, Breakthrough Genomics	-	- -
Benign, criteria provided, single submitter	clinical testing	GeneDx	Jul 15, 2018	- -

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
BayesDel_noAF	Benign	-0.82
CADD	Benign	2.0
DANN	Benign	0.71

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: rs76159732; hg19: chr19-10244781;