Genetic Variant MIR29B2CHG:n.683G>A (chr1-207802560-C-T) – ACMG Classification: Benign (-8 pts)

Variant summary

Our verdict is Benign. The variant received -8 ACMG points: 0P and 8B. BP4_StrongBS2

The NR_135298.1(MIR29B2CHG):n.1024G>A variant causes a non coding transcript exon change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00593 in 526,980 control chromosomes in the GnomAD database, including 18 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 0.0058 ( 1 hom., cov: 32)

Exomes 𝑓: 0.0060 ( 17 hom. )

Consequence

MIR29B2CHG
NR_135298.1 non_coding_transcript_exon

Scores

Clinical Significance

Not reported in ClinVar

Conservation

PhyloP100: -0.984

Publications

6 publications found

Variant links:

Genes affected

MIR29B2CHG (HGNC:32018): (MIR29B2 and MIR29C host gene)

MIR29B2CHG links:

MIR29B2 (HGNC:31620): (microRNA 29b-2) microRNAs (miRNAs) are short (20-24 nt) non-coding RNAs that are involved in post-transcriptional regulation of gene expression in multicellular organisms by affecting both the stability and translation of mRNAs. miRNAs are transcribed by RNA polymerase II as part of capped and polyadenylated primary transcripts (pri-miRNAs) that can be either protein-coding or non-coding. The primary transcript is cleaved by the Drosha ribonuclease III enzyme to produce an approximately 70-nt stem-loop precursor miRNA (pre-miRNA), which is further cleaved by the cytoplasmic Dicer ribonuclease to generate the mature miRNA and antisense miRNA star (miRNA*) products. The mature miRNA is incorporated into a RNA-induced silencing complex (RISC), which recognizes target mRNAs through imperfect base pairing with the miRNA and most commonly results in translational inhibition or destabilization of the target mRNA. The RefSeq represents the predicted microRNA stem-loop. [provided by RefSeq, Sep 2009]

MIR29B2 links:

Genome browser will be placed here

new If you want to explore the variant's impact on the transcript NR_135298.1, check out the Mutation Effect Viewer. This is especially useful for frameshift variants or if you want to visualize the effect of exon loss / intron retention.

ACMG classification

Classification was made for transcript

Our verdict: Benign. The variant received -8 ACMG points.

BP4

Computational evidence support a benign effect (BayesDel_noAF=-0.84).

BS2

High Homozygotes in GnomAdExome4 at 17 gene

Variant Effect in Transcripts

ACMG analysis was done for transcript: NR_135298.1. You can select a different transcript below to see updated ACMG assignments.

RefSeq Transcripts

Gene	Transcript	HGVSc	Effect	Exon Rank
MIR29B2CHG	NR_135298.1	n.1024G>A	non_coding_transcript_exon	Exon 5 of 5
MIR29B2CHG	NR_135299.1	n.1209G>A	non_coding_transcript_exon	Exon 6 of 6
MIR29B2	NR_029518.1	n.-37G>A	upstream_gene	N/A

Ensembl Transcripts

Gene	Transcript	HGVSc	Effect	Exon Rank
MIR29B2CHG	ENST00000710905.2	n.683G>A	non_coding_transcript_exon	Exon 5 of 5
MIR29B2CHG	ENST00000710901.1	n.662+3445G>A	intron	N/A
MIR29B2CHG	ENST00000710902.1	n.569+13369G>A	intron	N/A

Frequencies

GnomAD3 genomes

AF:

0.00583

AC:

886

AN:

152092

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.00230

Gnomad AMI

AF:

0.00110

Gnomad AMR

AF:

0.00819

Gnomad ASJ

AF:

0.00404

Gnomad EAS

AF:

0.00

Gnomad SAS

AF:

0.000414

Gnomad FIN

AF:

0.000754

Gnomad MID

AF:

0.00633

Gnomad NFE

AF:

0.00914

Gnomad OTH

AF:

0.00812

GnomAD2 exomes

AF:

0.00575

AC:

1412

AN:

245726

AF XY:

0.00596

show subpopulations

Gnomad AFR exome

AF:

0.00188

Gnomad AMR exome

AF:

0.00646

Gnomad ASJ exome

AF:

0.00401

Gnomad EAS exome

AF:

0.0000553

Gnomad FIN exome

AF:

0.000605

Gnomad NFE exome

AF:

0.00939

Gnomad OTH exome

AF:

0.00621

GnomAD4 exome

AF:

0.00598

AC:

2240

AN:

374770

Hom.:

Cov.:

AF XY:

0.00584

AC XY:

1246

AN XY:

213502

show subpopulations

African (AFR)

AF:

0.00216

AC:

AN:

10170

American (AMR)

AF:

0.00678

AC:

240

AN:

35390

Ashkenazi Jewish (ASJ)

AF:

0.00427

AC:

AN:

11472

East Asian (EAS)

AF:

0.0000769

AC:

AN:

12998

South Asian (SAS)

AF:

0.00106

AC:

AN:

65770

European-Finnish (FIN)

AF:

0.000747

AC:

AN:

32142

Middle Eastern (MID)

AF:

0.00393

AC:

AN:

2802

European-Non Finnish (NFE)

AF:

0.00921

AC:

1728

AN:

187624

Other (OTH)

AF:

0.00579

AC:

AN:

16402

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.495

Heterozygous variant carriers

199

298

398

497

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Age Distribution

Exome Het

Exome Hom

Variant carriers

<30

30-35

35-40

40-45

45-50

50-55

55-60

60-65

65-70

70-75

75-80

>80

Age

GnomAD4 genome

AF:

0.00583

AC:

887

AN:

152210

Hom.:

Cov.:

AF XY:

0.00564

AC XY:

420

AN XY:

74420

show subpopulations

African (AFR)

AF:

0.00229

AC:

AN:

41498

American (AMR)

AF:

0.00818

AC:

125

AN:

15288

Ashkenazi Jewish (ASJ)

AF:

0.00404

AC:

AN:

3468

East Asian (EAS)

AF:

0.00

AC:

AN:

5172

South Asian (SAS)

AF:

0.000415

AC:

AN:

4822

European-Finnish (FIN)

AF:

0.000754

AC:

AN:

10606

Middle Eastern (MID)

AF:

0.0102

AC:

AN:

294

European-Non Finnish (NFE)

AF:

0.00914

AC:

622

AN:

68036

Other (OTH)

AF:

0.00803

AC:

AN:

2116

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.503

Heterozygous variant carriers

144

192

240

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Age Distribution

Genome Het

Genome Hom

Variant carriers

100

<30

30-35

35-40

40-45

45-50

50-55

55-60

60-65

65-70

70-75

75-80

>80

Age

Alfa

AF:

0.00837

Hom.:

Bravo

AF:

0.00653

Asia WGS

AF:

0.00144

AC:

AN:

3478

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.9

Name

Calibrated prediction

Score

Prediction

BayesDel_noAF

Benign

-0.84

CADD

Benign

1.7

(source)

DANN

Benign

0.64

PhyloP100

-0.98

Splicing

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

MaxEntScan Visualizer can be used to analyze the impact of this mutation on the neighboring sequence.

Publications

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Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

Publications

ACMG classification

Variant Effect in Transcripts

RefSeq Transcripts

Ensembl Transcripts

Frequencies

Age Distribution

Age Distribution

ClinVar

Computational scores

Splicing

Publications

Other links and lift over