Variant 17-41973568-G-C details in Genebe, Genetics Data Aggregator

Variant summary

Our verdict is Uncertain significance. Variant got 1 ACMG points: 2P and 1B. PM2BP4

The NM_033133.5(CNP):c.910G>C(p.Glu304Gln) variant causes a missense change. The variant allele was found at a frequency of 0.00000137 in 1,461,886 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 12/21 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. E304K) has been classified as Uncertain significance.

Frequency

Genomes: not found (cov: 32)

Exomes 𝑓: 0.0000014 ( 0 hom. )

Consequence

CNP
NM_033133.5 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 5.42

Variant links:

Genes affected

CNP (HGNC:2158): (2',3'-cyclic nucleotide 3' phosphodiesterase) Predicted to enable 2',3'-cyclic-nucleotide 3'-phosphodiesterase activity. Involved in substantia nigra development. Located in several cellular components, including extracellular space; microtubule; and plasma membrane. Implicated in hypomyelinating leukodystrophy 20; multiple sclerosis; and schizophrenia. Biomarker of alcoholic liver cirrhosis; multiple sclerosis; and restless legs syndrome. [provided by Alliance of Genome Resources, Apr 2022]

CNP links:

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ACMG classification

Classification made for transcript

Verdict is Uncertain_significance. Variant got 1 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

BP4

Computational evidence support a benign effect (MetaRNN=0.28289816).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE
CNP	NM_033133.5 linkuse as main transcript	c.910G>C	p.Glu304Gln	missense_variant	4/4	ENST00000393892.8
CNP	NM_001330216.2 linkuse as main transcript	c.850G>C	p.Glu284Gln	missense_variant	4/4
CNP	XM_011524340.3 linkuse as main transcript	c.850G>C	p.Glu284Gln	missense_variant	4/4

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
CNP	ENST00000393892.8 linkuse as main transcript	c.910G>C	p.Glu304Gln	missense_variant	4/4	1	NM_033133.5	P3	P09543-1

Frequencies

GnomAD3 genomes

Cov.:

GnomAD4 exome

AF:

0.00000137

AC:

AN:

1461886

Hom.:

Cov.:

AF XY:

0.00000138

AC XY:

AN XY:

727248

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:

0.00000180

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

Uncertain significance, criteria provided, single submitter

clinical testing

Ambry Genetics

Aug 22, 2023

The c.910G>C (p.E304Q) alteration is located in exon 4 (coding exon 4) of the CNP gene. This alteration results from a G to C substitution at nucleotide position 910, causing the glutamic acid (E) at amino acid position 304 to be replaced by a glutamine (Q). 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

0.12

BayesDel_addAF

Benign

-0.041

BayesDel_noAF

Benign

-0.30

CADD

Uncertain

DANN

Uncertain

0.99

DEOGEN2

Benign

0.27

T;.

Eigen

Benign

0.14

Eigen_PC

Benign

0.19

FATHMM_MKL

Pathogenic

0.97

LIST_S2

Benign

0.83

T;T

M_CAP

Benign

0.015

MetaRNN

Benign

0.28

T;T

MetaSVM

Benign

-0.87

MutationAssessor

Uncertain

2.5

M;.

MutationTaster

Benign

1.0

D;D;D;D

PrimateAI

Benign

0.41

PROVEAN

Benign

-1.4

N;N

REVEL

Benign

0.12

Sift

Benign

0.082

T;T

Sift4G

Benign

0.12

T;T

Polyphen

0.053

B;.

Vest4

0.15

MutPred

0.68

Gain of helix (P = 0.132);.;

MVP

0.65

MPC

0.31

ClinPred

0.90

GERP RS

4.6

RBP_binding_hub_radar

0.0

RBP_regulation_power_radar

1.7

Varity_R

0.53

gMVP

0.60

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

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