3-186538928-C-T

Position:

chr3-186538928-C-T

Variant summary

Our verdict is Benign. Variant got -18 ACMG points: 2P and 20B. PM1BP4_StrongBP6_Very_StrongBS1BS2

The NM_017541.4(CRYGS):c.305G>A(p.Gly102Glu) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000336 in 1,614,088 control chromosomes in the GnomAD database, including 5 homozygotes. In-silico tool predicts a benign outcome for this variant. 14/20 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Likely benign (★★). Synonymous variant affecting the same amino acid position (i.e. G102G) has been classified as Likely benign.

Frequency

Genomes: 𝑓 0.00039 ( 1 hom., cov: 32)

Exomes 𝑓: 0.00033 ( 4 hom. )

Consequence

CRYGS
NM_017541.4 missense

Scores

Clinical Significance

Likely benign criteria provided, multiple submitters, no conflicts B:2

Conservation

PhyloP100: 3.53

Variant links:

Genes affected

CRYGS (HGNC:2417): (crystallin gamma S) 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. This gene encodes a protein initially considered to be a beta-crystallin but the encoded protein is monomeric and has greater sequence similarity to other gamma-crystallins. This gene encodes the most significant gamma-crystallin in adult eye lens tissue. Whether due to aging or mutations in specific genes, gamma-crystallins have been involved in cataract formation. [provided by RefSeq, Jul 2008]

CRYGS links:

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Benign. Variant got -18 ACMG points.

PM1

In a chain Gamma-crystallin S (size 176) in uniprot entity CRYGS_HUMAN there are 5 pathogenic changes around while only 2 benign (71%) in NM_017541.4

BP4

Computational evidence support a benign effect (MetaRNN=0.015817165).

BP6

Variant 3-186538928-C-T is Benign according to our data. Variant chr3-186538928-C-T is described in ClinVar as [Likely_benign]. Clinvar id is 2498946.Status of the report is criteria_provided_multiple_submitters_no_conflicts, 2 stars.

BS1

Variant frequency is greater than expected in population amr. gnomad4 allele frequency = 0.000388 (59/152250) while in subpopulation AMR AF= 0.00216 (33/15292). AF 95% confidence interval is 0.00158. There are 1 homozygotes in gnomad4. There are 37 alleles in male gnomad4 subpopulation. Median coverage is 32. This position pass quality control queck.

BS2

High AC in GnomAd4 at 59 AD gene.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
CRYGS	NM_017541.4 link	c.305G>A	p.Gly102Glu	missense_variant	3/3	ENST00000307944.6	NP_060011.1	P22914A0A140CTX8

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	UniProt
CRYGS	ENST00000307944.6 link	c.305G>A	p.Gly102Glu	missense_variant	3/3	1	NM_017541.4	ENSP00000312099.5	P22914
CRYGS	ENST00000460288.1 link	n.1207G>A		non_coding_transcript_exon_variant	2/2	1
CRYGS	ENST00000392499.6 link	c.305G>A	p.Gly102Glu	missense_variant	4/4	2		ENSP00000376287.2	P22914

Frequencies

GnomAD3 genomes

AF:

0.000394

AC:

AN:

152132

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.0000724

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.00216

Gnomad ASJ

AF:

0.00

Gnomad EAS

AF:

0.00

Gnomad SAS

AF:

0.000414

Gnomad FIN

AF:

0.00

Gnomad MID

AF:

0.00949

Gnomad NFE

AF:

0.000265

Gnomad OTH

AF:

0.000478

GnomAD3 exomes

AF:

0.000350

AC:

AN:

251232

Hom.:

AF XY:

0.000346

AC XY:

AN XY:

135786

show subpopulations

Gnomad AFR exome

AF:

0.0000615

Gnomad AMR exome

AF:

0.000984

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.00

Gnomad SAS exome

AF:

0.000327

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.000326

Gnomad OTH exome

AF:

0.000978

GnomAD4 exome

AF:

0.000330

AC:

483

AN:

1461838

Hom.:

Cov.:

AF XY:

0.000342

AC XY:

249

AN XY:

727218

show subpopulations

Gnomad4 AFR exome

AF:

0.000209

Gnomad4 AMR exome

AF:

0.000827

Gnomad4 ASJ exome

AF:

0.00

Gnomad4 EAS exome

AF:

0.00

Gnomad4 SAS exome

AF:

0.000557

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

0.000308

Gnomad4 OTH exome

AF:

0.000662

GnomAD4 genome

AF:

0.000388

AC:

AN:

152250

Hom.:

Cov.:

AF XY:

0.000497

AC XY:

AN XY:

74442

show subpopulations

Gnomad4 AFR

AF:

0.0000722

Gnomad4 AMR

AF:

0.00216

Gnomad4 ASJ

AF:

0.00

Gnomad4 EAS

AF:

0.00

Gnomad4 SAS

AF:

0.000414

Gnomad4 FIN

AF:

0.00

Gnomad4 NFE

AF:

0.000265

Gnomad4 OTH

AF:

0.000473

Alfa

AF:

0.000237

Hom.:

Bravo

AF:

0.000412

TwinsUK

AF:

0.000270

AC:

ALSPAC

AF:

0.000259

AC:

ESP6500AA

AF:

0.000681

AC:

ESP6500EA

AF:

0.000581

AC:

ExAC

AF:

0.000371

AC:

EpiCase

AF:

0.000382

EpiControl

AF:

0.000533

ClinVar

Significance: Likely benign

Submissions summary: Benign:2

Revision: criteria provided, multiple submitters, no conflicts

LINK: link

Submissions by phenotype

Cataract 20 multiple types

Benign:1

Likely benign, criteria provided, single submitter

clinical testing

Labcorp Genetics (formerly Invitae), Labcorp

Oct 29, 2023

- -

not provided

Benign:1

Likely benign, criteria provided, single submitter

clinical testing

CeGaT Center for Human Genetics Tuebingen

Mar 01, 2023

CRYGS: BP4, BS1 -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.29

BayesDel_addAF

Benign

-0.38

BayesDel_noAF

Benign

-0.38

CADD

Benign

DANN

Benign

0.72

DEOGEN2

Benign

0.14

T;T

Eigen

Benign

-0.71

Eigen_PC

Benign

-0.47

FATHMM_MKL

Benign

0.71

LIST_S2

Benign

0.75

.;T

M_CAP

Benign

0.014

MetaRNN

Benign

0.016

T;T

MetaSVM

Benign

-0.99

PrimateAI

Uncertain

0.58

PROVEAN

Benign

1.2

N;N

REVEL

Benign

0.098

Sift

Benign

1.0

T;T

Sift4G

Benign

1.0

T;T

Polyphen

0.033

B;B

Vest4

0.18

MVP

0.69

MPC

0.21

ClinPred

0.0073

GERP RS

3.2

Varity_R

0.070

gMVP

0.55

Splicing

Name

Calibrated prediction

Score

Prediction

SpliceAI score (max)

0.020

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