2-232136640-G-C

Position:

chr2-232136640-G-C

Variant summary

Our verdict is Likely benign. Variant got -1 ACMG points: 2P and 3B. PM2BP4_ModerateBS1_Supporting

The NM_152383.5(DIS3L2):c.871G>C(p.Ala291Pro) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0000173 in 1,613,868 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 14/21 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★). Another variant affecting the same amino acid position, but resulting in a different missense (i.e. A291T) has been classified as Benign.

Frequency

Genomes: 𝑓 0.0000066 ( 0 hom., cov: 32)

Exomes 𝑓: 0.000018 ( 0 hom. )

Consequence

DIS3L2
NM_152383.5 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:2

Conservation

PhyloP100: 1.05

Variant links:

Genes affected

DIS3L2 (HGNC:28648): (DIS3 like 3'-5' exoribonuclease 2) The protein encoded by this gene is similar in sequence to 3'/5' exonucleolytic subunits of the RNA exosome. The exosome is a large multimeric ribonucleotide complex responsible for degrading various RNA substrates. Several transcript variants, some protein-coding and some not, have been found for this gene. [provided by RefSeq, Mar 2012]

DIS3L2 links:

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Likely_benign. Variant got -1 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

BP4

Computational evidence support a benign effect (MetaRNN=0.07802454).

BS1

Variant frequency is greater than expected in population eas. gnomad4_exome allele frequency = 0.0000185 (27/1461788) while in subpopulation EAS AF= 0.000554 (22/39698). AF 95% confidence interval is 0.000375. There are 0 homozygotes in gnomad4_exome. There are 13 alleles in male gnomad4_exome subpopulation. Median coverage is 31. This position pass quality control queck. Existence of Clinvar submissions makes me limit the strength of this signal to Supporting

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE
DIS3L2	NM_152383.5 linkuse as main transcript	c.871G>C	p.Ala291Pro	missense_variant	8/21	ENST00000325385.12
DIS3L2	NM_001257281.2 linkuse as main transcript	c.871G>C	p.Ala291Pro	missense_variant	8/14
DIS3L2	NR_046476.2 linkuse as main transcript	n.1017G>C		non_coding_transcript_exon_variant	8/21
DIS3L2	NR_046477.2 linkuse as main transcript	n.1072+5697G>C		intron_variant, non_coding_transcript_variant

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
DIS3L2	ENST00000325385.12 linkuse as main transcript	c.871G>C	p.Ala291Pro	missense_variant	8/21	5	NM_152383.5	P1	Q8IYB7-1

Frequencies

GnomAD3 genomes

Cov.:

GnomAD3 exomes

AF:

0.0000561

AC:

AN:

249356

Hom.:

AF XY:

0.0000591

AC XY:

AN XY:

135260

show subpopulations

Gnomad AFR exome

AF:

0.00

Gnomad AMR exome

AF:

0.0000290

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.000668

Gnomad SAS exome

AF:

0.00

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.00

Gnomad OTH exome

AF:

0.000165

GnomAD4 exome

AF:

0.0000185

AC:

AN:

1461788

Hom.:

Cov.:

AF XY:

0.0000179

AC XY:

AN XY:

727190

show subpopulations

Gnomad4 AFR exome

AF:

0.00

Gnomad4 AMR exome

AF:

0.0000224

Gnomad4 ASJ exome

AF:

0.00

Gnomad4 EAS exome

AF:

0.000554

Gnomad4 SAS exome

AF:

0.00

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

8.99e-7

Gnomad4 OTH exome

AF:

0.0000497

GnomAD4 genome

AF:

0.00000658

AC:

AN:

152080

Hom.:

Cov.:

AF XY:

0.0000135

AC XY:

AN XY:

74338

show subpopulations

Gnomad4 AFR

AF:

0.00

Gnomad4 AMR

AF:

0.00

Gnomad4 ASJ

AF:

0.00

Gnomad4 EAS

AF:

0.000193

Gnomad4 SAS

AF:

0.00

Gnomad4 FIN

AF:

0.00

Gnomad4 NFE

AF:

0.00

Gnomad4 OTH

AF:

0.00

Bravo

AF:

0.0000642

ExAC

AF:

0.0000414

AC:

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:2

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

DIS3L2-related disorder

Uncertain:1

Uncertain significance, no assertion criteria provided

clinical testing

PreventionGenetics, part of Exact Sciences

Jul 17, 2024

The DIS3L2 c.871G>C variant is predicted to result in the amino acid substitution p.Ala291Pro. To our knowledge, this variant has not been reported in the literature. This variant is reported in 0.067% of alleles in individuals of East Asian descent in gnomAD. This variant has been interpreted as a variant of uncertain significance in ClinVar (https://www.ncbi.nlm.nih.gov/clinvar/variation/241987/). Although we suspect that this variant may be benign, at this time, the clinical significance of this variant is uncertain due to the absence of conclusive functional and genetic evidence. -

Perlman syndrome

Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Labcorp Genetics (formerly Invitae), Labcorp

Jan 17, 2024

This sequence change replaces alanine, which is neutral and non-polar, with proline, which is neutral and non-polar, at codon 291 of the DIS3L2 protein (p.Ala291Pro). This variant is present in population databases (rs753115829, gnomAD 0.07%). This variant has not been reported in the literature in individuals affected with DIS3L2-related conditions. ClinVar contains an entry for this variant (Variation ID: 241987). An algorithm developed to predict the effect of missense changes on protein structure and function (PolyPhen-2) suggests that this variant¬†is likely to be tolerated. In summary, the available evidence is currently insufficient to determine the role of this variant in disease. Therefore, it has been classified as a Variant of Uncertain Significance. -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.17

BayesDel_addAF

Benign

-0.48

BayesDel_noAF

Benign

-0.56

CADD

Benign

DANN

Uncertain

0.99

DEOGEN2

Benign

0.014

.;T;T

Eigen

Benign

-0.14

Eigen_PC

Benign

-0.096

FATHMM_MKL

Uncertain

0.78

LIST_S2

Uncertain

0.89

D;D;.

M_CAP

Benign

0.013

MetaRNN

Benign

0.078

T;T;T

MetaSVM

Benign

-0.90

MutationAssessor

Benign

1.1

L;L;L

MutationTaster

Benign

0.62

N;N;N;N

PrimateAI

Benign

0.25

PROVEAN

Benign

-0.76

N;N;N

REVEL

Benign

0.025

Sift

Benign

0.24

T;T;T

Sift4G

Benign

0.27

T;T;T

Polyphen

0.0010

.;B;B

Vest4

0.21

MutPred

0.43

Loss of catalytic residue at A291 (P = 0.0294);Loss of catalytic residue at A291 (P = 0.0294);Loss of catalytic residue at A291 (P = 0.0294);

MVP

0.068

MPC

0.32

ClinPred

0.084

GERP RS

2.0

Varity_R

0.094

gMVP

0.72

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

Below is the list of publications found by LitVar. It may be empty.

Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

ACMG classification

Transcripts

RefSeq

Ensembl

Frequencies

ClinVar

Submissions by phenotype

Computational scores

Splicing

Publications

LitVar

Other links and lift over