14-100849331-A-G

Position:

• chr14-100849331-A-G

Variant summary

Our verdict is Benign. Variant got -13 ACMG points: 0P and 13B. BP4_Strong BP6 BA1

The NR_046467.1(MEG3):​n.1427+3798A>G variant causes a intron, non coding transcript change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.519 in 152,032 control chromosomes in the GnomAD database, including 21,592 homozygotes. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Benign (no stars).

• Frequency:
  • Genomes: 𝑓 0.52 (21591 hom., cov: 32)
  • Exomes 𝑓: 1.0 (1 hom.)
• Consequence: MEG3 NR_046467.1 intron, non_coding_transcript
• Clinical Significance: Benign no assertion criteria provided B:1
• Conservation: PhyloP100: -0.645

Genes affected

MEG3 (HGNC:14575): (maternally expressed 3) This gene is a maternally expressed imprinted gene. Multiple alternatively spliced transcript variants have been transcribed from this gene and all of them are long non-coding RNAs (lncRNAs). This gene is expressed in many normal tissues, but its expression is lost in multiple cancer cell lines of various tissue origins. It inhibits tumor cell proliferation in vitro. It also interacts with the tumor suppressor p53, and regulates p53 target gene expression. Its deletion enhances angiogenesis in vivo. Many experimental evidences demonstrate that this gene is a lncRNA tumor suppressor. [provided by RefSeq, Mar 2012]

(HGNC:):

ACMG classification

Verdict is Benign. Variant got -13 ACMG points.

• BP4: Computational evidence support a benign effect (BayesDel_noAF=-0.9).
• BP6: Variant 14-100849331-A-G is Benign according to our data. Variant chr14-100849331-A-G is described in ClinVar as [Benign]. Clinvar id is 3057216.Status of the report is no_assertion_criteria_provided, 0 stars.
• BA1: GnomAd4 highest subpopulation (AMR) allele frequency at 95% confidence interval = 0.64 is higher than 0.05.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
MEG3	NR_046467.1	n.1427+3798A>G		intron_variant, non_coding_transcript_variant

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
	ENST00000554041.1	n.143+11553T>C		intron_variant, non_coding_transcript_variant		2

Frequencies

GnomAD3 genomes AF: 0.519 AC: 78866 AN: 151912 Hom.: 21579 Cov.: 32

Gnomad AFR AF: 0.348

Gnomad AMI AF: 0.715

Gnomad AMR AF: 0.650

Gnomad ASJ AF: 0.602

Gnomad EAS AF: 0.477

Gnomad SAS AF: 0.400

Gnomad FIN AF: 0.623

Gnomad MID AF: 0.490

Gnomad NFE AF: 0.583

Gnomad OTH AF: 0.514

GnomAD4 exome AF: 1.00 AC: 2 AN: 2 Hom.: 1 Cov.: 0 AC XY: 0 AN XY: 0

Gnomad4 FIN exome AF: 1.00

GnomAD4 genome AF: 0.519 AC: 78906 AN: 152030 Hom.: 21591 Cov.: 32 AF XY: 0.520 AC XY: 38648 AN XY: 74306

Gnomad4 AFR AF: 0.348

Gnomad4 AMR AF: 0.650

Gnomad4 ASJ AF: 0.602

Gnomad4 EAS AF: 0.477

Gnomad4 SAS AF: 0.400

Gnomad4 FIN AF: 0.623

Gnomad4 NFE AF: 0.583

Gnomad4 OTH AF: 0.510

Alfa AF: 0.544 Hom.: 7601

Bravo AF: 0.517

Asia WGS AF: 0.432 AC: 1500 AN: 3478

ClinVar

Significance: Benign

Submissions summary: Benign:1

Revision: no assertion criteria provided

Submissions by phenotype

MEG3-related disorder Benign:1

Benign, no assertion criteria provided

clinical testing

PreventionGenetics, part of Exact Sciences

Oct 31, 2019

This variant is classified as benign based on ACMG/AMP sequence variant interpretation guidelines (Richards et al. 2015 PMID: 25741868, with internal and published modifications). -

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
BayesDel_noAF	Benign	-0.90
CADD	Benign	0.31
DANN	Benign	0.82

Splicing

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

Publications

LitVar

Other links and lift over

dbSNP: rs4906023; hg19: chr14-101315668;