rs104893612

Positions:

chr2-98389696-C-T

Variant summary

Our verdict is Pathogenic. Variant got 12 ACMG points: 12P and 0B. PM1PM2PM5PP3_StrongPP5_Moderate

The ENST00000272602.7(CNGA3):c.488C>T(p.Pro163Leu) variant causes a missense change involving the alteration of a conserved nucleotide. The variant allele was found at a frequency of 0.00000991 in 1,613,734 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a pathogenic outcome for this variant. Variant has been reported in ClinVar as Pathogenic (★). Another variant affecting the same amino acid position, but resulting in a different missense (i.e. P163Q) has been classified as Likely pathogenic.

Frequency

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

Exomes 𝑓: 0.000010 ( 0 hom. )

Consequence

CNGA3
ENST00000272602.7 missense

Scores

Clinical Significance

Pathogenic/Likely pathogenic criteria provided, multiple submitters, no conflicts P:3

Conservation

PhyloP100: 7.53

Variant links:

Genes affected

CNGA3 (HGNC:2150): (cyclic nucleotide gated channel subunit alpha 3) This gene encodes a member of the cyclic nucleotide-gated cation channel protein family which is required for normal vision and olfactory signal transduction. Mutations in this gene are associated with achromatopsia (rod monochromacy) and color blindness. Two alternatively spliced transcripts encoding different isoforms have been described. [provided by RefSeq, Jul 2008]

CNGA3 links:

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Pathogenic. Variant got 12 ACMG points.

PM1

In a hotspot region, there are 2 aminoacids with missense pathogenic changes in the window of +-8 aminoacids around while only 1 benign, 4 uncertain in ENST00000272602.7

PM2

Very rare variant in population databases, with high coverage;

PM5

Other missense variant is known to change same aminoacid residue: Variant chr2-98389695-C-A is described in ClinVar as [Likely_pathogenic]. Clinvar id is 2706689.Status of the report is criteria_provided_single_submitter, 1 stars.

PP3

MetaRNN computational evidence supports a deleterious effect, 0.97

PP5

Variant 2-98389696-C-T is Pathogenic according to our data. Variant chr2-98389696-C-T is described in ClinVar as [Pathogenic]. Clinvar id is 9473.Status of the report is criteria_provided_single_submitter, 1 stars. Variant chr2-98389696-C-T is described in Lovd as [Likely_pathogenic]. Variant chr2-98389696-C-T is described in Lovd as [Pathogenic]. Variant chr2-98389696-C-T is described in Lovd as [Pathogenic].

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
CNGA3	NM_001298.3 linkuse as main transcript	c.488C>T	p.Pro163Leu	missense_variant	6/8	ENST00000272602.7	NP_001289.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
CNGA3	ENST00000272602.7 linkuse as main transcript	c.488C>T	p.Pro163Leu	missense_variant	6/8	1	NM_001298.3	ENSP00000272602	A1	Q16281-1
CNGA3	ENST00000436404.6 linkuse as main transcript	c.434C>T	p.Pro145Leu	missense_variant	5/7	1		ENSP00000410070	P4	Q16281-2
CNGA3	ENST00000393503.2 linkuse as main transcript	n.493C>T		non_coding_transcript_exon_variant	2/2	4
CNGA3	ENST00000409937.1 linkuse as main transcript	n.641C>T		non_coding_transcript_exon_variant	6/8	2

Frequencies

GnomAD3 genomes

AF:

0.00000657

AC:

AN:

152246

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:

0.000193

Gnomad SAS

AF:

0.00

Gnomad FIN

AF:

0.00

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.00

Gnomad OTH

AF:

0.00

GnomAD3 exomes

AF:

0.0000159

AC:

AN:

251488

Hom.:

AF XY:

0.00

AC XY:

AN XY:

135918

show subpopulations

Gnomad AFR exome

AF:

0.00

Gnomad AMR exome

AF:

0.0000289

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.00

Gnomad SAS exome

AF:

0.0000327

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.0000176

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.0000103

AC:

AN:

1461488

Hom.:

Cov.:

AF XY:

0.00000825

AC XY:

AN XY:

727052

show subpopulations

Gnomad4 AFR exome

AF:

0.00

Gnomad4 AMR exome

AF:

0.0000224

Gnomad4 ASJ exome

AF:

0.0000765

Gnomad4 EAS exome

AF:

0.0000252

Gnomad4 SAS exome

AF:

0.0000116

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

0.00000630

Gnomad4 OTH exome

AF:

0.0000497

GnomAD4 genome

AF:

0.00000657

AC:

AN:

152246

Hom.:

Cov.:

AF XY:

0.00

AC XY:

AN XY:

74374

show subpopulations

Gnomad4 AFR

AF:

0.00

Gnomad4 AMR

AF:

0.00

Gnomad4 ASJ

AF:

0.00

Gnomad4 EAS

AF:

0.000193

Gnomad4 SAS

AF:

0.00

Gnomad4 FIN

AF:

0.00

Gnomad4 NFE

AF:

0.00

Gnomad4 OTH

AF:

0.00

Alfa

AF:

0.0000425

Hom.:

Bravo

AF:

0.0000113

ExAC

AF:

0.00000824

AC:

ClinVar

Significance: Pathogenic/Likely pathogenic

Submissions summary: Pathogenic:3

Revision: criteria provided, multiple submitters, no conflicts

LINK: link

Submissions by phenotype

Achromatopsia 2

Pathogenic:2

Pathogenic, no assertion criteria provided	literature only	OMIM	Jul 01, 1998	- -
Pathogenic, criteria provided, single submitter	clinical testing	Palindrome, Gene Kavoshgaran Aria	Feb 29, 2024	- -

Retinal dystrophy

Pathogenic:1

Likely pathogenic, criteria provided, single submitter

clinical testing

Institute of Human Genetics, Univ. Regensburg, Univ. Regensburg

Jan 01, 2020

- -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Uncertain

0.45

BayesDel_addAF

Pathogenic

0.48

BayesDel_noAF

Pathogenic

0.55

CADD

Pathogenic

DANN

Uncertain

1.0

DEOGEN2

Uncertain

0.76

D;.;D;.

Eigen

Pathogenic

0.74

Eigen_PC

Uncertain

0.64

FATHMM_MKL

Pathogenic

0.99

LIST_S2

Uncertain

0.94

D;D;.;D

M_CAP

Pathogenic

0.43

MetaRNN

Pathogenic

0.97

D;D;D;D

MetaSVM

Pathogenic

1.1

MutationAssessor

Pathogenic

3.3

M;.;M;.

MutationTaster

Benign

1.0

A;A;A;A

PrimateAI

Uncertain

0.53

PROVEAN

Pathogenic

-8.6

D;D;D;D

REVEL

Pathogenic

0.95

Sift

Uncertain

0.0010

D;D;D;D

Sift4G

Pathogenic

0.0010

D;D;D;D

Polyphen

1.0

D;.;D;.

Vest4

0.99

MutPred

0.74

.;.;.;Loss of disorder (P = 0.0649);

MVP

0.99

MPC

0.51

ClinPred

0.99

GERP RS

4.7

Varity_R

0.61

gMVP

0.86

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