rs201453807

chr2-232130691-C-T

Variant summary

Our verdict is Likely benign. Variant got -2 ACMG points: 2P and 4B. PM2 BP4_Strong

The NM_152383.5(DIS3L2):c.674C>T(p.Ser225Leu) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0000167 in 1,613,884 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 (★★). Synonymous variant affecting the same amino acid position (i.e. S225S) has been classified as Likely benign.

• Frequency:
  • Genomes: 𝑓 0.000059 (0 hom., cov: 32)
  • Exomes 𝑓: 0.000012 (0 hom.)
• Consequence: DIS3L2 NM_152383.5 missense
• Clinical Significance: Uncertain significance criteria provided, multiple submitters, no conflicts U:2
• Conservation: PhyloP100: 1.08

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]

ACMG classification

Verdict is Likely_benign. Variant got -2 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• BP4: Computational evidence support a benign effect (MetaRNN=0.042558104).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
DIS3L2	NM_152383.5	c.674C>T	p.Ser225Leu	missense_variant	7/21	ENST00000325385.12

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
DIS3L2	ENST00000325385.12	c.674C>T	p.Ser225Leu	missense_variant	7/21	5	NM_152383.5	P1

Frequencies

GnomAD3 genomes AF: 0.0000592 AC: 9 AN: 152110 Hom.: 0 Cov.: 32

Gnomad AFR AF: 0.000169

Gnomad AMI AF: 0.00

Gnomad AMR AF: 0.00

Gnomad ASJ AF: 0.00

Gnomad EAS AF: 0.000384

Gnomad SAS AF: 0.00

Gnomad FIN AF: 0.00

Gnomad MID AF: 0.00

Gnomad NFE AF: 0.00

Gnomad OTH AF: 0.00

GnomAD3 exomes AF: 0.0000241 AC: 6 AN: 249098 Hom.: 0 AF XY: 0.0000148 AC XY: 2 AN XY: 135140

Gnomad AFR exome AF: 0.000129

Gnomad AMR exome AF: 0.0000291

Gnomad ASJ exome AF: 0.00

Gnomad EAS exome AF: 0.000111

Gnomad SAS exome AF: 0.00

Gnomad FIN exome AF: 0.00

Gnomad NFE exome AF: 0.00000885

Gnomad OTH exome AF: 0.00

GnomAD4 exome AF: 0.0000123 AC: 18 AN: 1461656 Hom.: 0 Cov.: 31 AF XY: 0.00000688 AC XY: 5 AN XY: 727132

Gnomad4 AFR exome AF: 0.000149

Gnomad4 AMR exome AF: 0.0000224

Gnomad4 ASJ exome AF: 0.00

Gnomad4 EAS exome AF: 0.0000252

Gnomad4 SAS exome AF: 0.0000116

Gnomad4 FIN exome AF: 0.0000374

Gnomad4 NFE exome AF: 0.00000630

Gnomad4 OTH exome AF: 0.0000166

GnomAD4 genome AF: 0.0000591 AC: 9 AN: 152228 Hom.: 0 Cov.: 32 AF XY: 0.0000672 AC XY: 5 AN XY: 74424

Gnomad4 AFR AF: 0.000169

Gnomad4 AMR AF: 0.00

Gnomad4 ASJ AF: 0.00

Gnomad4 EAS AF: 0.000385

Gnomad4 SAS AF: 0.00

Gnomad4 FIN AF: 0.00

Gnomad4 NFE AF: 0.00

Gnomad4 OTH AF: 0.00

Alfa AF: 0.0000656 Hom.: 0

Bravo AF: 0.0000340

ExAC AF: 0.0000331 AC: 4

Asia WGS AF: 0.000289 AC: 1 AN: 3478

EpiCase AF: 0.0000545

EpiControl AF: 0.00

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:2

Revision: criteria provided, multiple submitters, no conflicts

Submissions by phenotype

Perlman syndrome Uncertain:2

Uncertain significance, criteria provided, single submitter	clinical testing	Invitae	Nov 04, 2023	This sequence change replaces serine, which is neutral and polar, with leucine, which is neutral and non-polar, at codon 225 of the DIS3L2 protein (p.Ser225Leu). This variant is present in population databases (rs201453807, gnomAD 0.03%). 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: 334932). 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. -
Uncertain significance, criteria provided, single submitter	clinical testing	Illumina Laboratory Services, Illumina	Jan 12, 2018	This variant was observed in the ICSL laboratory as part of a predisposition screen in an ostensibly healthy population. It had not been previously curated by ICSL or reported in the Human Gene Mutation Database (HGMD: prior to June 1st, 2018), and was therefore a candidate for classification through an automated scoring system. Utilizing variant allele frequency, disease prevalence and penetrance estimates, and inheritance mode, an automated score was calculated to assess if this variant is too frequent to cause the disease. Based on the score, this variant could not be ruled out of causing disease and therefore its association with disease required further investigation. A literature search was performed for the gene, cDNA change, and amino acid change (if applicable). No publications were found based on this search. This variant was therefore classified as a variant of unknown significance for this disease. -

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Benign	0.068
BayesDel_addAF	Benign	-0.41	T
BayesDel_noAF	Benign	-0.56
Cadd	Benign	18
Dann	Uncertain	1.0
Eigen	Benign	-0.35
Eigen_PC	Benign	-0.34
FATHMM_MKL	Benign	0.11	N
LIST_S2	Benign	0.27	T;T;.;.
M_CAP	Benign	0.014	T
MetaRNN	Benign	0.043	T;T;T;T
MetaSVM	Benign	-1.0	T
MutationAssessor	Benign	0.55	N;N;N;N
MutationTaster	Benign	1.0	N;N;N;N;N
PrimateAI	Benign	0.35	T
PROVEAN	Benign	-1.8	N;N;N;N
REVEL	Benign	0.052
Sift	Uncertain	0.027	D;D;D;D
Sift4G	Benign	0.078	T;D;D;D
Polyphen		0.074, 0.68	.;B;P;B
Vest4		0.13
MVP		0.15
MPC		0.19
ClinPred		0.077	T
GERP RS		4.4
Varity_R		0.060
gMVP		0.32

Splicing

Name	Calibrated prediction	Score	Prediction
SpliceAI score (max)		0.040		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: rs201453807; hg19: chr2-232995401;