chr2-232263437-T-A

Variant names:

• chr2-232263437-T-A
• rs1553541570
• NM_152383.5:c.1656T>A

Variant summary

Our verdict is Uncertain significance. Variant got 0 ACMG points: 2P and 2B. PM2 BP4_Moderate

The NM_152383.5(DIS3L2):​c.1656T>A​(p.Asp552Glu) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant was absent in control chromosomes in GnomAD project. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).

• Frequency: Genomes: not found (cov: 32)
• Consequence: DIS3L2 NM_152383.5 missense
• Clinical Significance: Uncertain significance criteria provided, single submitter U:1
• Conservation: PhyloP100: 0.400

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 Uncertain_significance. Variant got 0 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• BP4: Computational evidence support a benign effect (MetaRNN=0.24841508).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
DIS3L2	NM_152383.5	c.1656T>A	p.Asp552Glu	missense_variant	Exon 13 of 21	ENST00000325385.12	NP_689596.4
DIS3L2	NM_001257281.2	c.1581+75T>A		intron_variant	Intron 13 of 13		NP_001244210.1
DIS3L2	NR_046476.2	n.1802T>A		non_coding_transcript_exon_variant	Exon 13 of 21
DIS3L2	NR_046477.2	n.1778T>A		non_coding_transcript_exon_variant	Exon 12 of 19

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
DIS3L2	ENST00000325385.12	c.1656T>A	p.Asp552Glu	missense_variant	Exon 13 of 21	5	NM_152383.5	ENSP00000315569.7

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD4 exome Cov.: 31

GnomAD4 genome Cov.: 32

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

Submissions by phenotype

Perlman syndrome Uncertain:1

Jul 19, 2017

Labcorp Genetics (formerly Invitae), Labcorp

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

This variant is not present in population databases (ExAC no frequency). This variant has not been reported in the literature in individuals with DIS3L2-related disease. Algorithms developed to predict the effect of missense changes on protein structure and function do not agree on the potential impact of this missense change (SIFT: "Tolerated"; PolyPhen-2: "Possibly Damaging"; Align-GVGD: "Class C0"). 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. This sequence change replaces aspartic acid with glutamic acid at codon 552 of the DIS3L2 protein (p.Asp552Glu). The aspartic acid residue is moderately conserved and there is a small physicochemical difference between aspartic acid and glutamic acid. -

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Pathogenic	0.65
BayesDel_addAF	Benign	-0.027	T
BayesDel_noAF	Benign	-0.28
CADD	Benign	20
DANN	Uncertain	0.98
DEOGEN2	Benign	0.16	T;T;T
Eigen	Benign	-0.54
Eigen_PC	Benign	-0.41
FATHMM_MKL	Uncertain	0.87	D
LIST_S2	Benign	0.83	T;.;D
M_CAP	Benign	0.023	T
MetaRNN	Benign	0.25	T;T;T
MetaSVM	Benign	-1.1	T
MutationAssessor	Benign	0.91	L;L;.
PrimateAI	Uncertain	0.53	T
PROVEAN	Uncertain	-2.7	D;D;D
REVEL	Benign	0.18
Sift	Benign	0.25	T;T;T
Sift4G	Benign	0.21	T;T;T
Polyphen		0.047	B;B;.
Vest4		0.52
MutPred		0.60		Gain of sheet (P = 0.0827);Gain of sheet (P = 0.0827);.;
MVP		0.29
MPC		0.63
ClinPred		0.85	D
GERP RS		1.6
Varity_R		0.48
gMVP		0.41

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: rs1553541570; hg19: chr2-233128147;