rs770990892

Variant summary

Our verdict is Likely benign. The variant received -3 ACMG points: 1P and 4B. PP3BS2

The NM_005210.4(CRYGB):​c.509G>A​(p.Arg170Gln) variant causes a missense change. The variant allele was found at a frequency of 0.0000447 in 1,545,194 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 Uncertain significance (★).

Frequency

Genomes: 𝑓 0.000020 ( 0 hom., cov: 32)
Exomes 𝑓: 0.000047 ( 0 hom. )

Consequence

CRYGB
NM_005210.4 missense

Scores

5
9
4

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 4.62

Publications

1 publications found
Variant links:
Genes affected
CRYGB (HGNC:2409): (crystallin gamma B) Crystallins are separated into two classes: taxon-specific, or enzyme, and ubiquitous. The latter class constitutes the major proteins of vertebrate eye lens and maintains the transparency and refractive index of the lens. Since lens central fiber cells lose their nuclei during development, these crystallins are made and then retained throughout life, making them extremely stable proteins. Mammalian lens crystallins are divided into alpha, beta, and gamma families; beta and gamma crystallins are also considered as a superfamily. Alpha and beta families are further divided into acidic and basic groups. Seven protein regions exist in crystallins: four homologous motifs, a connecting peptide, and N- and C-terminal extensions. Gamma-crystallins are a homogeneous group of highly symmetrical, monomeric proteins typically lacking connecting peptides and terminal extensions. They are differentially regulated after early development. Four gamma-crystallin genes (gamma-A through gamma-D) and three pseudogenes (gamma-E, gamma-F, gamma-G) are tandemly organized in a genomic segment as a gene cluster. Whether due to aging or mutations in specific genes, gamma-crystallins have been involved in cataract formation. [provided by RefSeq, Jul 2008]
CRYGB Gene-Disease associations (from GenCC):
  • early-onset anterior polar cataract
    Inheritance: AD Classification: SUPPORTIVE Submitted by: Orphanet
  • early-onset lamellar cataract
    Inheritance: AD Classification: SUPPORTIVE Submitted by: Orphanet
  • total early-onset cataract
    Inheritance: AD Classification: SUPPORTIVE Submitted by: Orphanet
  • cataract 39 multiple types
    Inheritance: AD Classification: LIMITED Submitted by: G2P, Labcorp Genetics (formerly Invitae)

Genome browser will be placed here

ACMG classification

Classification was made for transcript

Our verdict: Likely_benign. The variant received -3 ACMG points.

PP3
MetaRNN computational evidence supports a deleterious effect, 0.774
BS2
High AC in GnomAdExome4 at 66 AD gene.

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_005210.4. You can select a different transcript below to see updated ACMG assignments.

RefSeq Transcripts

Sel.
GeneTranscriptTagsHGVScHGVSpEffectExon RankProteinUniProt
CRYGB
NM_005210.4
MANE Select
c.509G>Ap.Arg170Gln
missense
Exon 3 of 3NP_005201.2P07316
LOC100507443
NR_038437.1
n.221+5478C>T
intron
N/A

Ensembl Transcripts

Sel.
GeneTranscriptTagsHGVScHGVSpEffectExon RankProteinUniProt
CRYGB
ENST00000260988.5
TSL:1 MANE Select
c.509G>Ap.Arg170Gln
missense
Exon 3 of 3ENSP00000260988.4P07316
ENSG00000295187
ENST00000728538.1
n.224+5478C>T
intron
N/A
ENSG00000295187
ENST00000728539.1
n.241+5478C>T
intron
N/A

Frequencies

GnomAD3 genomes
AF:
0.0000197
AC:
3
AN:
152186
Hom.:
0
Cov.:
32
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:
0.00
Gnomad FIN
AF:
0.00
Gnomad MID
AF:
0.00
Gnomad NFE
AF:
0.0000294
Gnomad OTH
AF:
0.000478
GnomAD2 exomes
AF:
0.0000406
AC:
8
AN:
197258
AF XY:
0.0000564
show subpopulations
Gnomad AFR exome
AF:
0.00
Gnomad AMR exome
AF:
0.00
Gnomad ASJ exome
AF:
0.00
Gnomad EAS exome
AF:
0.00
Gnomad FIN exome
AF:
0.00
Gnomad NFE exome
AF:
0.0000835
Gnomad OTH exome
AF:
0.00
GnomAD4 exome
AF:
0.0000474
AC:
66
AN:
1393008
Hom.:
0
Cov.:
29
AF XY:
0.0000450
AC XY:
31
AN XY:
688238
show subpopulations
African (AFR)
AF:
0.00
AC:
0
AN:
30666
American (AMR)
AF:
0.00
AC:
0
AN:
30536
Ashkenazi Jewish (ASJ)
AF:
0.00
AC:
0
AN:
21782
East Asian (EAS)
AF:
0.00
AC:
0
AN:
38728
South Asian (SAS)
AF:
0.00
AC:
0
AN:
73694
European-Finnish (FIN)
AF:
0.00
AC:
0
AN:
51384
Middle Eastern (MID)
AF:
0.000183
AC:
1
AN:
5456
European-Non Finnish (NFE)
AF:
0.0000581
AC:
63
AN:
1083456
Other (OTH)
AF:
0.0000349
AC:
2
AN:
57306
Allele Balance Distribution
Red line indicates average allele balance
Average allele balance: 0.487
Heterozygous variant carriers
0
3
7
10
14
17
0.00
0.20
0.40
0.60
0.80
0.95
Allele balance

Age Distribution

Exome Het
Variant carriers
0
4
8
12
16
20
<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
AF:
0.0000197
AC:
3
AN:
152186
Hom.:
0
Cov.:
32
AF XY:
0.00
AC XY:
0
AN XY:
74346
show subpopulations
African (AFR)
AF:
0.00
AC:
0
AN:
41430
American (AMR)
AF:
0.00
AC:
0
AN:
15286
Ashkenazi Jewish (ASJ)
AF:
0.00
AC:
0
AN:
3470
East Asian (EAS)
AF:
0.00
AC:
0
AN:
5200
South Asian (SAS)
AF:
0.00
AC:
0
AN:
4836
European-Finnish (FIN)
AF:
0.00
AC:
0
AN:
10612
Middle Eastern (MID)
AF:
0.00
AC:
0
AN:
316
European-Non Finnish (NFE)
AF:
0.0000294
AC:
2
AN:
68030
Other (OTH)
AF:
0.000478
AC:
1
AN:
2094
Allele Balance Distribution
Red line indicates average allele balance
Average allele balance: 0.492
Heterozygous variant carriers
0
1
1
2
2
3
0.00
0.20
0.40
0.60
0.80
0.95
Allele balance

Age Distribution

Genome 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
Alfa
AF:
0.00
Hom.:
0
Bravo
AF:
0.0000378
ExAC
AF:
0.00000824
AC:
1

ClinVar

ClinVar submissions
Significance:Uncertain significance
Revision:criteria provided, single submitter
View on ClinVar
Pathogenic
VUS
Benign
Condition
-
1
-
not specified (1)

Computational scores

Source: dbNSFP v4.9

Name
Calibrated prediction
Score
Prediction
AlphaMissense
Uncertain
0.36
BayesDel_addAF
Benign
-0.13
T
BayesDel_noAF
Benign
-0.23
CADD
Uncertain
25
DANN
Pathogenic
1.0
DEOGEN2
Uncertain
0.66
D
Eigen
Pathogenic
0.79
Eigen_PC
Pathogenic
0.70
FATHMM_MKL
Uncertain
0.90
D
LIST_S2
Uncertain
0.92
D
M_CAP
Benign
0.053
D
MetaRNN
Pathogenic
0.77
D
MetaSVM
Uncertain
0.39
D
MutationAssessor
Pathogenic
3.3
M
PhyloP100
4.6
PrimateAI
Benign
0.42
T
PROVEAN
Uncertain
-3.5
D
REVEL
Uncertain
0.61
Sift
Uncertain
0.014
D
Sift4G
Uncertain
0.028
D
Polyphen
1.0
D
Vest4
0.24
MutPred
0.87
Loss of MoRF binding (P = 0.0069)
MVP
0.91
MPC
0.33
ClinPred
0.98
D
GERP RS
4.7
Varity_R
0.73
gMVP
0.31
Mutation Taster
=61/39
polymorphism

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

Other links and lift over

dbSNP: rs770990892; hg19: chr2-209007381; COSMIC: COSV53680845; COSMIC: COSV53680845; API