2-208142854-T-C

Variant names:

Variant summary

Our verdict is Benign. Variant got -15 ACMG points: 0P and 15B. BP4_StrongBP6_ModerateBP7BS1BS2

The NM_005210.4(CRYGB):c.312A>G(p.Ser104Ser) variant causes a synonymous change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00155 in 1,614,066 control chromosomes in the GnomAD database, including 73 homozygotes. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Benign (★).

Frequency

Genomes: 𝑓 0.00077 ( 2 hom., cov: 33)

Exomes 𝑓: 0.0016 ( 71 hom. )

Consequence

CRYGB
NM_005210.4 synonymous

Scores

Clinical Significance

Benign criteria provided, single submitter B:2

Conservation

PhyloP100: -0.832

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 links:

LOC100507443 (HGNC:):

LOC100507443 links:

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Benign. Variant got -15 ACMG points.

BP4

Computational evidence support a benign effect (BayesDel_noAF=-0.64).

BP6

Variant 2-208142854-T-C is Benign according to our data. Variant chr2-208142854-T-C is described in ClinVar as [Benign]. Clinvar id is 474172.Status of the report is criteria_provided_single_submitter, 1 stars. Variant chr2-208142854-T-C is described in Lovd as [Benign].

BP7

Synonymous conserved (PhyloP=-0.832 with no splicing effect.

BS1

Variant frequency is greater than expected in population sas. gnomad4 allele frequency = 0.000768 (117/152338) while in subpopulation SAS AF= 0.024 (116/4832). AF 95% confidence interval is 0.0205. There are 2 homozygotes in gnomad4. There are 100 alleles in male gnomad4 subpopulation. Median coverage is 33. This position pass quality control queck.

BS2

High AC in GnomAd4 at 117 AD gene.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
CRYGB	NM_005210.4 link	c.312A>G	p.Ser104Ser	synonymous_variant	Exon 3 of 3	ENST00000260988.5	NP_005201.2	P07316
CRYGB	XM_017003402.2 link	c.318A>G	p.Ser106Ser	synonymous_variant	Exon 3 of 3		XP_016858891.1
LOC100507443	NR_038437.1 link	n.221+5675T>C		intron_variant	Intron 2 of 2

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
CRYGB	ENST00000260988.5 link	c.312A>G	p.Ser104Ser	synonymous_variant	Exon 3 of 3	1	NM_005210.4	ENSP00000260988.4		P07316

Frequencies

GnomAD3 genomes

AF:

0.000775

AC:

118

AN:

152220

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:

0.00

Gnomad SAS

AF:

0.0242

Gnomad FIN

AF:

0.00

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.0000147

Gnomad OTH

AF:

0.00

GnomAD3 exomes

AF:

0.00344

AC:

859

AN:

250026

Hom.:

AF XY:

0.00475

AC XY:

642

AN XY:

135166

show subpopulations

Gnomad AFR exome

AF:

0.00

Gnomad AMR exome

AF:

0.0000579

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.000163

Gnomad SAS exome

AF:

0.0273

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.000116

Gnomad OTH exome

AF:

0.00114

GnomAD4 exome

AF:

0.00163

AC:

2380

AN:

1461728

Hom.:

Cov.:

AF XY:

0.00245

AC XY:

1782

AN XY:

727166

show subpopulations

Gnomad4 AFR exome

AF:

0.00

Gnomad4 AMR exome

AF:

0.0000447

Gnomad4 ASJ exome

AF:

0.00

Gnomad4 EAS exome

AF:

0.000101

Gnomad4 SAS exome

AF:

0.0258

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

0.0000387

Gnomad4 OTH exome

AF:

0.00164

GnomAD4 genome

AF:

0.000768

AC:

117

AN:

152338

Hom.:

Cov.:

AF XY:

0.00134

AC XY:

100

AN XY:

74502

show subpopulations

Gnomad4 AFR

AF:

0.00

Gnomad4 AMR

AF:

0.00

Gnomad4 ASJ

AF:

0.00

Gnomad4 EAS

AF:

0.00

Gnomad4 SAS

AF:

0.0240

Gnomad4 FIN

AF:

0.00

Gnomad4 NFE

AF:

0.0000147

Gnomad4 OTH

AF:

0.00

Alfa

AF:

0.000342

Hom.:

Bravo

AF:

0.000159

Asia WGS

AF:

0.00577

AC:

AN:

3478

EpiCase

AF:

0.00

EpiControl

AF:

0.0000593

ClinVar

Significance: Benign

Submissions summary: Benign:2

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

CRYGB-related disorder

Benign:1

Mar 05, 2019

PreventionGenetics, part of Exact Sciences

Significance: Benign

Review Status: no assertion criteria provided

Collection Method: clinical testing

This variant is classified as benign based on ACMG/AMP sequence variant interpretation guidelines (Richards et al. 2015 PMID: 25741868, with internal and published modifications). -

Cataract 39 multiple types

Benign:1

Dec 18, 2024

Labcorp Genetics (formerly Invitae), Labcorp

Significance: Benign

Review Status: criteria provided, single submitter

Collection Method: clinical testing

- -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

BayesDel_noAF

Benign

-0.64

CADD

Benign

6.1

DANN

Benign

0.54

Splicing

Name

Calibrated prediction

Score

Prediction

SpliceAI score (max)

0.010

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