rs1174949911

Variant summary

Our verdict is Likely pathogenic. The variant received 7 ACMG points: 7P and 0B. PM2PP3_StrongPP5

The NM_019098.5(CNGB3):​c.643G>C​(p.Asp215His) variant causes a missense, splice region change. The variant allele was found at a frequency of 0.000000684 in 1,461,798 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a pathogenic outcome for this variant. 3/3 splice prediction tools predicting alterations to normal splicing. Variant has been reported in ClinVar as Likely pathogenic (no stars).

Frequency

Genomes: not found (cov: 31)
Exomes 𝑓: 6.8e-7 ( 0 hom. )

Consequence

CNGB3
NM_019098.5 missense, splice_region

Scores

7
7
5
Splicing: ADA: 1.000
2

Clinical Significance

Likely pathogenic no assertion criteria provided P:1

Conservation

PhyloP100: 3.95

Publications

1 publications found
Variant links:
Genes affected
CNGB3 (HGNC:2153): (cyclic nucleotide gated channel subunit beta 3) This gene encodes the beta subunit of a cyclic nucleotide-gated ion channel. The encoded beta subunit appears to play a role in modulation of channel function in cone photoreceptors. This heterotetrameric channel is necessary for sensory transduction, and mutations in this gene have been associated with achromatopsia 3, progressive cone dystrophy, and juvenile macular degeneration, also known as Stargardt Disease. [provided by RefSeq, Feb 2010]
CNGB3 Gene-Disease associations (from GenCC):
  • achromatopsia 3
    Inheritance: AR Classification: DEFINITIVE, STRONG Submitted by: Labcorp Genetics (formerly Invitae), G2P, PanelApp Australia
  • CNGB3-related retinopathy
    Inheritance: AR Classification: DEFINITIVE Submitted by: ClinGen
  • cone dystrophy
    Inheritance: AD Classification: SUPPORTIVE Submitted by: Orphanet
  • achromatopsia
    Inheritance: AR Classification: SUPPORTIVE Submitted by: Orphanet
  • severe early-childhood-onset retinal dystrophy
    Inheritance: Unknown Classification: LIMITED Submitted by: Labcorp Genetics (formerly Invitae)

Genome browser will be placed here

ACMG classification

Classification was made for transcript

Our verdict: Likely_pathogenic. The variant received 7 ACMG points.

PM2
Very rare variant in population databases, with high coverage;
PP3
Splicing predictors support a deleterious effect. Scorers claiming Pathogenic: dbscSNV1_ADA, dbscSNV1_RF, max_spliceai. No scorers claiming Uncertain. No scorers claiming Benign.
PP5
Variant 8-86668019-C-G is Pathogenic according to our data. Variant chr8-86668019-C-G is described in ClinVar as Likely_pathogenic. ClinVar VariationId is 427672.Status of the report is no_assertion_criteria_provided, 0 stars.

Transcripts

RefSeq

Gene Transcript HGVSc HGVSp Effect Exon rank MANE Protein UniProt
CNGB3NM_019098.5 linkc.643G>C p.Asp215His missense_variant, splice_region_variant Exon 5 of 18 ENST00000320005.6 NP_061971.3 Q9NQW8-1
CNGB3XM_011517138.3 linkc.229G>C p.Asp77His missense_variant, splice_region_variant Exon 3 of 16 XP_011515440.1

Ensembl

Gene Transcript HGVSc HGVSp Effect Exon rank TSL MANE Protein Appris UniProt
CNGB3ENST00000320005.6 linkc.643G>C p.Asp215His missense_variant, splice_region_variant Exon 5 of 18 1 NM_019098.5 ENSP00000316605.5 Q9NQW8-1
CNGB3ENST00000681746.1 linkn.643G>C splice_region_variant, non_coding_transcript_exon_variant Exon 5 of 19 ENSP00000505959.1 A0A5J6DSN8
CNGB3ENST00000680314.1 linkn.*145G>C downstream_gene_variant

Frequencies

GnomAD3 genomes
Cov.:
31
GnomAD4 exome
AF:
6.84e-7
AC:
1
AN:
1461798
Hom.:
0
Cov.:
32
AF XY:
0.00
AC XY:
0
AN XY:
727198
show subpopulations
African (AFR)
AF:
0.00
AC:
0
AN:
33476
American (AMR)
AF:
0.00
AC:
0
AN:
44722
Ashkenazi Jewish (ASJ)
AF:
0.00
AC:
0
AN:
26134
East Asian (EAS)
AF:
0.00
AC:
0
AN:
39694
South Asian (SAS)
AF:
0.00
AC:
0
AN:
86252
European-Finnish (FIN)
AF:
0.00
AC:
0
AN:
53408
Middle Eastern (MID)
AF:
0.00
AC:
0
AN:
5768
European-Non Finnish (NFE)
AF:
8.99e-7
AC:
1
AN:
1111954
Other (OTH)
AF:
0.00
AC:
0
AN:
60390
Allele Balance Distribution
Red line indicates average allele balance
Average allele balance: 0.425
Heterozygous variant carriers
0
0
1
1
2
2
0.00
0.20
0.40
0.60
0.80
0.95
Allele balance

Age Distribution

Exome Het
Variant carriers
0
2
4
6
8
10
<30
30-35
35-40
40-45
45-50
50-55
55-60
60-65
65-70
70-75
75-80
>80
Age
GnomAD4 genome
Cov.:
31

ClinVar

Significance: Likely pathogenic
Submissions summary: Pathogenic:1
Revision: no assertion criteria provided
LINK: link

Submissions by phenotype

Achromatopsia 3 Pathogenic:1
Mar 27, 2017
Molecular Genetics Laboratory, Institute for Ophthalmic Research
Significance:Likely pathogenic
Review Status:no assertion criteria provided
Collection Method:research

- -

Computational scores

Source: dbNSFP v4.3

Name
Calibrated prediction
Score
Prediction
AlphaMissense
Uncertain
0.54
BayesDel_addAF
Pathogenic
0.49
D
BayesDel_noAF
Pathogenic
0.47
CADD
Pathogenic
31
DANN
Uncertain
0.99
DEOGEN2
Benign
0.39
T
Eigen
Uncertain
0.56
Eigen_PC
Uncertain
0.58
FATHMM_MKL
Pathogenic
0.99
D
LIST_S2
Benign
0.74
T
M_CAP
Uncertain
0.25
D
MetaRNN
Pathogenic
0.92
D
MetaSVM
Pathogenic
0.99
D
MutationAssessor
Pathogenic
3.1
M
PhyloP100
4.0
PrimateAI
Benign
0.41
T
PROVEAN
Uncertain
-3.3
D
REVEL
Pathogenic
0.75
Sift
Benign
0.037
D
Sift4G
Uncertain
0.0090
D
Polyphen
0.88
P
Vest4
0.89
MutPred
0.71
Gain of sheet (P = 0.0827);
MVP
0.98
MPC
0.085
ClinPred
0.94
D
GERP RS
6.1
Varity_R
0.30
gMVP
0.74
Mutation Taster
=26/74
disease causing (ClinVar)

Splicing

Name
Calibrated prediction
Score
Prediction
dbscSNV1_ADA
Pathogenic
1.0
dbscSNV1_RF
Pathogenic
1.0
SpliceAI score (max)
0.54
Details are displayed if max score is > 0.2
DS_DL_spliceai
0.54
Position offset: 0

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

Publications

Other links and lift over

dbSNP: rs1174949911; hg19: chr8-87680247; API