2-232087686-G-T

Variant names:

• chr2-232087686-G-T
• rs755258805
• NM_152383.5:c.566G>T

Variant summary

Our verdict is Likely benign. The variant received -3 ACMG points: 0P and 3B. BP4_Moderate BS1_Supporting

The NM_152383.5(DIS3L2):​c.566G>T​(p.Gly189Val) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0000144 in 1,461,866 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 14/22 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. G189A) has been classified as Uncertain significance.

• Frequency:
  • Genomes: not found (cov: 31)
  • Exomes 𝑓: 0.000014 (0 hom.)
• Consequence: DIS3L2 NM_152383.5 missense
• Clinical Significance: Uncertain significance criteria provided, multiple submitters, no conflicts U:5
• Conservation: PhyloP100: 1.91
• Publications: 1 publications found

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 Gene-Disease associations (from GenCC):

• Perlman syndrome

  Inheritance: AR Classification: DEFINITIVE, STRONG, SUPPORTIVE Submitted by: Orphanet, G2P, ClinGen, Labcorp Genetics (formerly Invitae)

ACMG classification

Our verdict: Likely_benign. The variant received -3 ACMG points.

• BP4: Computational evidence support a benign effect (MetaRNN=0.10520068).
• BS1: Variant frequency is greater than expected in population mid. GnomAdExome4 allele frequency = 0.0000144 (21/1461866) while in subpopulation MID AF = 0.00104 (6/5768). AF 95% confidence interval is 0.000453. There are 0 homozygotes in GnomAdExome4. There are 16 alleles in the male GnomAdExome4 subpopulation. Median coverage is 32. This position passed quality control check. Existence of Clinvar submissions makes me limit the strength of this signal to Supporting

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_152383.5. You can select a different transcript below to see updated ACMG assignments.

RefSeq Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	DIS3L2	NM_152383.5	MANE Select	c.566G>T	p.Gly189Val	missense	Exon 6 of 21	NP_689596.4
	DIS3L2	NM_001257281.2		c.566G>T	p.Gly189Val	missense	Exon 6 of 14	NP_001244210.1	Q8IYB7-3
	DIS3L2	NM_001257282.2		c.566G>T	p.Gly189Val	missense	Exon 6 of 7	NP_001244211.1	Q8IYB7-4

Ensembl Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	DIS3L2	ENST00000325385.12	TSL:5 MANE Select	c.566G>T	p.Gly189Val	missense	Exon 6 of 21	ENSP00000315569.7	Q8IYB7-1
	DIS3L2	ENST00000409401.7	TSL:1	c.566G>T	p.Gly189Val	missense	Exon 6 of 7	ENSP00000386594.3	Q8IYB7-4
	DIS3L2	ENST00000390005.9	TSL:1	n.566G>T		non_coding_transcript_exon	Exon 6 of 21	ENSP00000374655.5	Q8IYB7-2

Frequencies

GnomAD3 genomes Cov.: 31

GnomAD2 exomes AF: 0.0000200 AC: 5 AN: 249432 AF XY: 0.0000369

Gnomad AFR exome AF: 0.00

Gnomad AMR exome AF: 0.00

Gnomad ASJ exome AF: 0.00

Gnomad EAS exome AF: 0.00

Gnomad FIN exome AF: 0.00

Gnomad NFE exome AF: 0.0000442

Gnomad OTH exome AF: 0.00

GnomAD4 exome AF: 0.0000144 AC: 21 AN: 1461866 Hom.: 0 Cov.: 32 AF XY: 0.0000220 AC XY: 16 AN XY: 727228

African (AFR) AF: 0.0000597 AC: 2 AN: 33480

American (AMR) AF: 0.00 AC: 0 AN: 44722

Ashkenazi Jewish (ASJ) AF: 0.00 AC: 0 AN: 26136

East Asian (EAS) AF: 0.00 AC: 0 AN: 39700

South Asian (SAS) AF: 0.0000116 AC: 1 AN: 86252

European-Finnish (FIN) AF: 0.00 AC: 0 AN: 53420

Middle Eastern (MID) AF: 0.00104 AC: 6 AN: 5768

European-Non Finnish (NFE) AF: 0.0000108 AC: 12 AN: 1111992

Other (OTH) AF: 0.00 AC: 0 AN: 60396

GnomAD4 genome Cov.: 31

Alfa AF: 0.00 Hom.: 0

Bravo AF: 0.00000378

ExAC AF: 0.0000413 AC: 5

EpiCase AF: 0.00

EpiControl AF: 0.000237

ClinVar

ClinVar submissions

Significance: Uncertain significance

Revision: criteria provided, multiple submitters, no conflicts

Pathogenic	VUS	Benign	Condition
-	3	-	Perlman syndrome (3)
-	1	-	Inborn genetic diseases (1)
-	1	-	not provided (1)

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Benign	0.12
BayesDel_addAF	Benign	-0.21	T
BayesDel_noAF	Benign	-0.41
CADD	Benign	18
DANN	Uncertain	0.99
DEOGEN2	Benign	0.14	T
Eigen	Benign	-0.23
Eigen_PC	Benign	-0.14
FATHMM_MKL	Benign	0.69	D
LIST_S2	Uncertain	0.88	D
M_CAP	Benign	0.028	D
MetaRNN	Benign	0.11	T
MetaSVM	Benign	-0.81	T
MutationAssessor	Uncertain	2.1	M
PhyloP100		1.9
PrimateAI	Benign	0.29	T
PROVEAN	Benign	-1.9	N
REVEL	Benign	0.071
Sift	Benign	0.15	T
Sift4G	Benign	0.33	T
Polyphen		0.029	B
Vest4		0.31
MutPred		0.47		Gain of sheet (P = 0.0477)
MVP		0.16
MPC		0.41
ClinPred		0.15	T
GERP RS		3.8
Varity_R		0.074
gMVP		0.39
Mutation Taster		=96/4	polymorphism

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

Other links and lift over

dbSNP: rs755258805; hg19: chr2-232952396;