Genetic Variant NM_152383.5:c.1923T>C (chr2-232329996-T-C) – ACMG Classification: Likely_benign (-2 pts)

Variant summary

Our verdict is Likely benign. The variant received -2 ACMG points: 2P and 4B. PM2BP4_ModerateBP6BP7

The NM_152383.5(DIS3L2):c.1923T>C(p.Asn641Asn) variant causes a splice region, synonymous change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0000361 in 1,605,968 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 3/3 splice prediction tools predict no significant impact on normal splicing. Variant has been reported in ClinVar as Conflicting classifications of pathogenicity (no stars).

Frequency

Genomes: 𝑓 0.000085 ( 0 hom., cov: 33)

Exomes 𝑓: 0.000031 ( 0 hom. )

Consequence

DIS3L2
NM_152383.5 splice_region, synonymous

Scores

Splicing: ADA: 0.0007035

Clinical Significance

Conflicting classifications of pathogenicity criteria provided, conflicting classifications U:1B:1

Conservation

PhyloP100: -1.85

Publications

0 publications found

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 Gene-Disease associations (from GenCC):

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

DIS3L2 links:

Genome browser will be placed here

ACMG classification

Classification was made for transcript

Our verdict: Likely_benign. The variant received -2 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

BP4

Computational evidence support a benign effect (REVEL=0.093).

BP6

Variant 2-232329996-T-C is Benign according to our data. Variant chr2-232329996-T-C is described in ClinVar as Conflicting_classifications_of_pathogenicity. ClinVar VariationId is 241968.

BP7

Synonymous conserved (PhyloP=-1.85 with no splicing effect.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein
DIS3L2	NM_152383.5 link	c.1923T>C	p.Asn641Asn	splice_region_variant, synonymous_variant	Exon 15 of 21	ENST00000325385.12	NP_689596.4
DIS3L2	NR_046476.2 link	n.1996T>C		splice_region_variant, non_coding_transcript_exon_variant	Exon 15 of 21
DIS3L2	NR_046477.2 link	n.1975T>C		splice_region_variant, non_coding_transcript_exon_variant	Exon 14 of 19
DIS3L2	NM_001257281.2 link	c.1582-13349T>C		intron_variant	Intron 13 of 13		NP_001244210.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
DIS3L2	ENST00000325385.12 link	c.1923T>C	p.Asn641Asn	splice_region_variant, synonymous_variant	Exon 15 of 21	5	NM_152383.5	ENSP00000315569.7

Frequencies

GnomAD3 genomes

AF:

0.0000854

AC:

AN:

152168

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.0000241

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.000262

Gnomad ASJ

AF:

0.00

Gnomad EAS

AF:

0.00

Gnomad SAS

AF:

0.00

Gnomad FIN

AF:

0.00

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.000118

Gnomad OTH

AF:

0.00

GnomAD2 exomes

AF:

0.0000494

AC:

AN:

242708

AF XY:

0.0000833

show subpopulations

Gnomad AFR exome

AF:

0.00

Gnomad AMR exome

AF:

0.0000300

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.0000572

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.0000729

Gnomad OTH exome

AF:

0.000171

GnomAD4 exome

AF:

0.0000310

AC:

AN:

1453800

Hom.:

Cov.:

AF XY:

0.0000318

AC XY:

AN XY:

722502

show subpopulations

African (AFR)

AF:

0.0000301

AC:

AN:

33246

American (AMR)

AF:

0.00

AC:

AN:

44150

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

25908

East Asian (EAS)

AF:

0.0000510

AC:

AN:

39246

South Asian (SAS)

AF:

0.0000117

AC:

AN:

85640

European-Finnish (FIN)

AF:

0.00

AC:

AN:

52622

Middle Eastern (MID)

AF:

0.00

AC:

AN:

5744

European-Non Finnish (NFE)

AF:

0.0000352

AC:

AN:

1107216

Other (OTH)

AF:

0.0000333

AC:

AN:

60028

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.474

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Age Distribution

Exome Het

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:

0.0000854

AC:

AN:

152168

Hom.:

Cov.:

AF XY:

0.0000942

AC XY:

AN XY:

74326

show subpopulations

African (AFR)

AF:

0.0000241

AC:

AN:

41456

American (AMR)

AF:

0.000262

AC:

AN:

15284

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

3470

East Asian (EAS)

AF:

0.00

AC:

AN:

5184

South Asian (SAS)

AF:

0.00

AC:

AN:

4824

European-Finnish (FIN)

AF:

0.00

AC:

AN:

10616

Middle Eastern (MID)

AF:

0.00

AC:

AN:

316

European-Non Finnish (NFE)

AF:

0.000118

AC:

AN:

68016

Other (OTH)

AF:

0.00

AC:

AN:

2092

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.537

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Age Distribution

Genome Het

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

Alfa

AF:

0.0000868

Hom.:

Bravo

AF:

0.0000227

EpiCase

AF:

0.00

EpiControl

AF:

0.0000599

ClinVar

Significance: Conflicting classifications of pathogenicity

Submissions summary: Uncertain:1Benign:1

Revision: criteria provided, conflicting classifications

LINK: link

Submissions by phenotype

Perlman syndrome

Uncertain:1Benign:1

May 15, 2024

Fulgent Genetics, Fulgent Genetics

Significance:Uncertain significance

Review Status:criteria provided, single submitter

Collection Method:clinical testing

Dec 17, 2024

Labcorp Genetics (formerly Invitae), Labcorp

Significance:Likely benign

Review Status:criteria provided, single submitter

Collection Method:clinical testing

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.16

BayesDel_noAF

Benign

-0.60

CADD

Benign

1.8

(source)

DANN

Benign

0.77

PhyloP100

-1.8

RBP_binding_hub_radar

0.0

RBP_regulation_power_radar

1.7

Mutation Taster

=67/33

polymorphism

(source)

Splicing

Name

Calibrated prediction

Score

Prediction

dbscSNV1_ADA

Benign

0.00070

dbscSNV1_RF

Benign

0.10

SpliceAI score (max)

0.010

Details are displayed if max score is > 0.2

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

Publications

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Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

Publications

ACMG classification

Transcripts

RefSeq

Ensembl

Frequencies

Age Distribution

Age Distribution

ClinVar

Submissions by phenotype

Computational scores

Splicing

Publications

Other links and lift over