Genetic Variant NM_018029.4:c.295G>C (chr3-73062376-G-C) – ACMG Classification: Uncertain_significance (0 pts)

Variant summary

Our verdict is Uncertain significance. The variant received 0 ACMG points: 2P and 2B. PM2BP4_Moderate

The NM_018029.4(EBLN2):c.295G>C(p.Asp99His) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0000212 in 1,606,510 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 (★).

Frequency

Genomes: 𝑓 0.000026 ( 0 hom., cov: 32)

Exomes 𝑓: 0.000021 ( 0 hom. )

Consequence

EBLN2
NM_018029.4 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 0.365

Publications

1 publications found

Variant links:

Genes affected

EBLN2 (HGNC:25493): (endogenous Bornavirus like nucleoprotein 2)

EBLN2 links:

PPP4R2 (HGNC:18296): (protein phosphatase 4 regulatory subunit 2) The protein encoded by this gene is a regulatory subunit of the serine/threonine-protein phosphatase 4 complex. In addition to being required for efficient DNA double strand break repair, this complex plays a role in organization of microtubules at centrosomes and processing of spliceosomal snRNPs. Several transcript variants encoding different isoforms have been found for this gene. [provided by RefSeq, Dec 2015]

PPP4R2 links:

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ACMG classification

Classification was made for transcript

Our verdict: Uncertain_significance. The variant received 0 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

BP4

Computational evidence support a benign effect (MetaRNN=0.12524223).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
EBLN2	NM_018029.4 link	c.295G>C	p.Asp99His	missense_variant	Exon 1 of 1	ENST00000533473.1	NP_060499.3	Q6P2I7
PPP4R2	NM_174907.4 link	c.420-1297G>C		intron_variant	Intron 5 of 8	ENST00000356692.10	NP_777567.1	Q9NY27-1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
EBLN2	ENST00000533473.1 link	c.295G>C	p.Asp99His	missense_variant	Exon 1 of 1	6	NM_018029.4	ENSP00000432104.1		Q6P2I7
PPP4R2	ENST00000356692.10 link	c.420-1297G>C		intron_variant	Intron 5 of 8	1	NM_174907.4	ENSP00000349124.5		Q9NY27-1

Frequencies

GnomAD3 genomes

AF:

0.0000263

AC:

AN:

152098

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:

0.000208

Gnomad FIN

AF:

0.00

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.0000441

Gnomad OTH

AF:

0.00

GnomAD2 exomes

AF:

0.0000167

AC:

AN:

239044

AF XY:

0.00

show subpopulations

Gnomad AFR exome

AF:

0.00

Gnomad AMR exome

AF:

0.0000318

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.00

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.0000183

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.0000206

AC:

AN:

1454294

Hom.:

Cov.:

AF XY:

0.0000263

AC XY:

AN XY:

723462

show subpopulations

African (AFR)

AF:

0.00

AC:

AN:

32920

American (AMR)

AF:

0.0000477

AC:

AN:

41892

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

25838

East Asian (EAS)

AF:

0.00

AC:

AN:

39626

South Asian (SAS)

AF:

0.0000118

AC:

AN:

85016

European-Finnish (FIN)

AF:

0.00

AC:

AN:

53302

Middle Eastern (MID)

AF:

0.000175

AC:

AN:

5720

European-Non Finnish (NFE)

AF:

0.0000207

AC:

AN:

1109942

Other (OTH)

AF:

0.0000500

AC:

AN:

60038

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.452

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

GnomAD4 genome

AF:

0.0000263

AC:

AN:

152216

Hom.:

Cov.:

AF XY:

0.0000134

AC XY:

AN XY:

74424

show subpopulations

African (AFR)

AF:

0.00

AC:

AN:

41540

American (AMR)

AF:

0.00

AC:

AN:

15292

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

3472

East Asian (EAS)

AF:

0.00

AC:

AN:

5186

South Asian (SAS)

AF:

0.000208

AC:

AN:

4810

European-Finnish (FIN)

AF:

0.00

AC:

AN:

10600

Middle Eastern (MID)

AF:

0.00

AC:

AN:

294

European-Non Finnish (NFE)

AF:

0.0000441

AC:

AN:

67998

Other (OTH)

AF:

0.00

AC:

AN:

2112

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.512

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Alfa

AF:

0.00

Hom.:

Bravo

AF:

0.0000378

ExAC

AF:

0.0000165

AC:

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

not specified

Uncertain:1

Oct 20, 2024

Ambry Genetics

Significance:Uncertain significance

Review Status:criteria provided, single submitter

Collection Method:clinical testing

The c.295G>C (p.D99H) alteration is located in exon 1 (coding exon 1) of the EBLN2 gene. This alteration results from a G to C substitution at nucleotide position 295, causing the aspartic acid (D) at amino acid position 99 to be replaced by a histidine (H). 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

Uncertain

0.48

BayesDel_addAF

Benign

-0.23

BayesDel_noAF

Benign

-0.46

CADD

Benign

(source)

DANN

Benign

0.86

DEOGEN2

Benign

0.022

Eigen

Benign

-0.52

Eigen_PC

Benign

-0.77

FATHMM_MKL

Benign

0.058

LIST_S2

Benign

0.48

M_CAP

Benign

0.0029

MetaRNN

Benign

0.13

MetaSVM

Benign

-1.0

MutationAssessor

Benign

0.34

PhyloP100

0.36

PrimateAI

Benign

0.46

PROVEAN

Uncertain

-2.5

REVEL

Benign

0.095

Sift

Benign

0.43

Sift4G

Benign

0.16

Polyphen

1.0

Vest4

0.16

MVP

0.12

MPC

0.018

ClinPred

0.16

GERP RS

0.46

Varity_R

0.15

gMVP

0.096

Mutation Taster

=100/0

polymorphism

(source)

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

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NM_018029.4:c.295G>C

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