Genetic Variant CSRNP3:p.Ile295Val (chr2-165678878-A-G) – ACMG Classification: Uncertain_significance (2 pts)

Variant summary

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

The NM_001172173.2(CSRNP3):c.883A>G(p.Ile295Val) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000000684 in 1,461,760 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 14/23 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).

Frequency

Genomes: not found (cov: 31)

Exomes 𝑓: 6.8e-7 ( 0 hom. )

Consequence

CSRNP3
NM_001172173.2 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 2.54

Variant links:

Genes affected

CSRNP3 (HGNC:30729): (cysteine and serine rich nuclear protein 3) Predicted to enable DNA-binding transcription factor activity, RNA polymerase II-specific and sequence-specific DNA binding activity. Predicted to be involved in positive regulation of apoptotic process and positive regulation of transcription by RNA polymerase II. Predicted to be part of chromatin. Predicted to be active in nucleus. [provided by Alliance of Genome Resources, Apr 2022]

CSRNP3 links:

Genome browser will be placed here

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 rank	MANE	Protein	UniProt
CSRNP3	NM_001172173.2 link	c.883A>G	p.Ile295Val	missense_variant	Exon 7 of 7	ENST00000651982.1	NP_001165644.1	Q8WYN3-1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
CSRNP3	ENST00000651982.1 link	c.883A>G	p.Ile295Val	missense_variant	Exon 7 of 7		NM_001172173.2	ENSP00000498841.1		Q8WYN3-1

Frequencies

GnomAD3 genomes

Cov.:

GnomAD4 exome

AF:

6.84e-7

AC:

AN:

1461760

Hom.:

Cov.:

AF XY:

0.00

AC XY:

AN XY:

727184

show subpopulations

Gnomad4 AFR exome

AF:

0.00

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:

8.99e-7

Gnomad4 OTH exome

AF:

0.00

GnomAD4 genome

Cov.:

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

not specified

Uncertain:1

Nov 24, 2024

Ambry Genetics

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

The c.883A>G (p.I295V) alteration is located in exon 7 (coding exon 4) of the CSRNP3 gene. This alteration results from a A to G substitution at nucleotide position 883, causing the isoleucine (I) at amino acid position 295 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

0.067

BayesDel_addAF

Benign

-0.31

BayesDel_noAF

Benign

-0.68

CADD

Benign

DANN

Benign

0.92

DEOGEN2

Benign

0.0065

.;T;T;.

Eigen

Benign

-0.47

Eigen_PC

Benign

-0.29

FATHMM_MKL

Uncertain

0.85

LIST_S2

Benign

0.68

T;T;.;T

M_CAP

Benign

0.0021

MetaRNN

Benign

0.043

T;T;T;T

MetaSVM

Benign

-0.99

MutationAssessor

Benign

1.1

.;L;L;.

PrimateAI

Benign

0.44

PROVEAN

Benign

0.38

N;N;N;N

REVEL

Benign

0.068

Sift

Benign

0.56

T;T;T;T

Sift4G

Benign

0.32

T;T;T;T

Polyphen

0.0

.;B;B;.

Vest4

0.021, 0.020, 0.068

MutPred

0.13

Gain of glycosylation at S299 (P = 0.1154);Gain of glycosylation at S299 (P = 0.1154);Gain of glycosylation at S299 (P = 0.1154);.;

MVP

0.043

MPC

0.082

ClinPred

0.24

GERP RS

1.7

Varity_R

0.033

gMVP

0.30

Splicing

Name

Calibrated prediction

Score

Prediction

SpliceAI score (max)

0.49

Details are displayed if max score is > 0.2

DS_DG_spliceai

0.49

Position offset: -1

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

Publications

No publications associated with this variant yet.

Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

ACMG classification

Transcripts

RefSeq

Ensembl

Frequencies

ClinVar

Submissions by phenotype

Computational scores

Splicing

Publications

Other links and lift over