Variant 1-84414746-A-G details in Genebe, Genetics Data Aggregator

Variant summary

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

The NM_021233.3(DNASE2B):c.964A>G(p.Ile322Val) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00000372 in 1,614,090 control chromosomes in the GnomAD database, with no homozygous occurrence. 12/21 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).

Frequency

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

Exomes 𝑓: 0.0000034 ( 0 hom. )

Consequence

DNASE2B
NM_021233.3 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 2.97

Variant links:

Genes affected

DNASE2B (HGNC:28875): (deoxyribonuclease 2 beta) The protein encoded by this gene shares considerable sequence similarity to, and is structurally related to DNase II. The latter is a well characterized endonuclease that catalyzes DNA hydrolysis in the absence of divalent cations at acidic pH. Unlike DNase II which is ubiquitously expressed, expression of this gene product is restricted to the salivary gland and lungs. The gene has been localized to chromosome 1p22.3 adjacent (and in opposite orientation) to the uricase pseudogene. Two transcript variants encoding different isoforms have been described for this gene. [provided by RefSeq, Jul 2008]

DNASE2B links:

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ACMG classification

Classification made for transcript

Verdict is Uncertain_significance. Variant got 2 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
DNASE2B	NM_021233.3 linkuse as main transcript	c.964A>G	p.Ile322Val	missense_variant	6/6	ENST00000370665.4	NP_067056.2	Q8WZ79-1Q66K39
DNASE2B	NM_058248.2 linkuse as main transcript	c.340A>G	p.Ile114Val	missense_variant	4/4		NP_490649.1	Q8WZ79-2
DNASE2B	XM_047426625.1 linkuse as main transcript	c.727A>G	p.Ile243Val	missense_variant	5/5		XP_047282581.1
DNASE2B	XM_011541878.3 linkuse as main transcript	c.340A>G	p.Ile114Val	missense_variant	3/3		XP_011540180.1	Q8WZ79-2

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
DNASE2B	ENST00000370665.4 linkuse as main transcript	c.964A>G	p.Ile322Val	missense_variant	6/6	1	NM_021233.3	ENSP00000359699.3		Q8WZ79-1
DNASE2B	ENST00000370662.3 linkuse as main transcript	c.340A>G	p.Ile114Val	missense_variant	4/4	1		ENSP00000359696.3		Q8WZ79-2

Frequencies

GnomAD3 genomes

AF:

0.00000657

AC:

AN:

152222

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.00

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.00

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:

0.0000147

Gnomad OTH

AF:

0.00

GnomAD4 exome

AF:

0.00000342

AC:

AN:

1461868

Hom.:

Cov.:

AF XY:

0.00000275

AC XY:

AN XY:

727232

show subpopulations

Gnomad4 AFR exome

AF:

0.0000299

Gnomad4 AMR exome

AF:

0.00

Gnomad4 ASJ exome

AF:

0.00

Gnomad4 EAS exome

AF:

0.00

Gnomad4 SAS exome

AF:

0.00

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

0.00000360

Gnomad4 OTH exome

AF:

0.00

GnomAD4 genome

AF:

0.00000657

AC:

AN:

152222

Hom.:

Cov.:

AF XY:

0.0000134

AC XY:

AN XY:

74372

show subpopulations

Gnomad4 AFR

AF:

0.00

Gnomad4 AMR

AF:

0.00

Gnomad4 ASJ

AF:

0.00

Gnomad4 EAS

AF:

0.00

Gnomad4 SAS

AF:

0.00

Gnomad4 FIN

AF:

0.00

Gnomad4 NFE

AF:

0.0000147

Gnomad4 OTH

AF:

0.00

Bravo

AF:

0.0000302

ExAC

AF:

0.00000824

AC:

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

not specified

Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Ambry Genetics

Apr 19, 2024

The c.964A>G (p.I322V) alteration is located in exon 6 (coding exon 6) of the DNASE2B gene. This alteration results from a A to G substitution at nucleotide position 964, causing the isoleucine (I) at amino acid position 322 to be replaced by a valine (V). Based on insufficient or conflicting evidence, the clinical significance of this alteration remains unclear. -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.079

BayesDel_addAF

Benign

-0.17

BayesDel_noAF

Benign

-0.49

CADD

Benign

DANN

Uncertain

1.0

DEOGEN2

Benign

0.025

T;.

Eigen

Uncertain

0.42

Eigen_PC

Uncertain

0.44

FATHMM_MKL

Uncertain

0.90

LIST_S2

Benign

0.80

T;T

M_CAP

Benign

0.0060

MetaRNN

Uncertain

0.46

T;T

MetaSVM

Benign

-1.1

MutationAssessor

Benign

1.4

L;.

PrimateAI

Benign

0.35

PROVEAN

Benign

-0.31

N;N

REVEL

Benign

0.11

Sift

Benign

0.49

T;T

Sift4G

Benign

0.12

T;T

Polyphen

0.99

D;.

Vest4

0.39

MutPred

0.48

Loss of sheet (P = 0.0817);.;

MVP

0.32

MPC

0.37

ClinPred

0.66

GERP RS

5.3

Varity_R

0.13

gMVP

0.40

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