rs915116953

Variant names:

• chr3-186538797-G-A
• rs915116953
• NM_017541.4:c.436C>T

Your query was ambiguous. Multiple possible variants found:

• chr3-186538797-G-A
• chr3-186538797-G-C

Variant summary

Our verdict is Likely benign. The variant received -3 ACMG points: 2P and 5B. PP2 PP3 BS1_Supporting BS2

The NM_017541.4(CRYGS):​c.436C>T​(p.Arg146Cys) variant causes a missense change. The variant allele was found at a frequency of 0.0000254 in 1,613,972 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: 0.000026 (0 hom.)
• Consequence: CRYGS NM_017541.4 missense
• Clinical Significance: Uncertain significance criteria provided, single submitter U:1
• Conservation: PhyloP100: 4.78
• Publications: 1 publications found

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 Gene-Disease associations (from GenCC):

• cataract 20 multiple types

  Inheritance: AD Classification: DEFINITIVE, STRONG Submitted by: G2P, Labcorp Genetics (formerly Invitae), Ambry Genetics
• early-onset lamellar cataract

  Inheritance: AD Classification: SUPPORTIVE Submitted by: Orphanet
• early-onset sutural cataract

  Inheritance: AD Classification: SUPPORTIVE Submitted by: Orphanet

ENSG00000294974 (HGNC:):

ACMG classification

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

• PP2: Missense variant in the gene, where a lot of missense mutations are associated with disease in ClinVar. The gene has 7 curated pathogenic missense variants (we use a threshold of 10). The gene has 1 curated benign missense variants. Gene score misZ: 0.2428 (below the threshold of 3.09). Trascript score misZ: 0.85394 (below the threshold of 3.09). GenCC associations: The gene is linked to cataract 20 multiple types, early-onset lamellar cataract, early-onset sutural cataract.
• PP3: MetaRNN computational evidence supports a deleterious effect, 0.769
• BS1: Variant frequency is greater than expected in population eas. GnomAdExome4 allele frequency = 0.000026 (38/1461870) while in subpopulation EAS AF = 0.000126 (5/39700). AF 95% confidence interval is 0.0000491. There are 0 homozygotes in GnomAdExome4. There are 16 alleles in the male GnomAdExome4 subpopulation. Median coverage is 31. This position passed quality control check. Existence of Clinvar submissions makes me limit the strength of this signal to Supporting
• BS2: High AC in GnomAdExome4 at 38 AD gene.

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_017541.4. You can select a different transcript below to see updated ACMG assignments.

RefSeq Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	CRYGS	NM_017541.4	MANE Select	c.436C>T	p.Arg146Cys	missense	Exon 3 of 3	NP_060011.1	P22914

Ensembl Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	CRYGS	ENST00000307944.6	TSL:1 MANE Select	c.436C>T	p.Arg146Cys	missense	Exon 3 of 3	ENSP00000312099.5	P22914
	CRYGS	ENST00000460288.1	TSL:1	n.1338C>T		non_coding_transcript_exon	Exon 2 of 2
	CRYGS	ENST00000392499.6	TSL:2	c.436C>T	p.Arg146Cys	missense	Exon 4 of 4	ENSP00000376287.2	P22914

Frequencies

GnomAD3 genomes AF: 0.0000197 AC: 3 AN: 152102 Hom.: 0 Cov.: 32

Gnomad AFR AF: 0.0000241

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: 0.00

GnomAD2 exomes AF: 0.00000398 AC: 1 AN: 251414 AF XY: 0.00

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 FIN exome AF: 0.00

Gnomad NFE exome AF: 0.00

Gnomad OTH exome AF: 0.00

GnomAD4 exome AF: 0.0000260 AC: 38 AN: 1461870 Hom.: 0 Cov.: 31 AF XY: 0.0000220 AC XY: 16 AN XY: 727240

African (AFR) AF: 0.0000299 AC: 1 AN: 33478

American (AMR) AF: 0.0000224 AC: 1 AN: 44720

Ashkenazi Jewish (ASJ) AF: 0.00 AC: 0 AN: 26136

East Asian (EAS) AF: 0.000126 AC: 5 AN: 39700

South Asian (SAS) AF: 0.0000232 AC: 2 AN: 86258

European-Finnish (FIN) AF: 0.00 AC: 0 AN: 53418

Middle Eastern (MID) AF: 0.00 AC: 0 AN: 5768

European-Non Finnish (NFE) AF: 0.0000261 AC: 29 AN: 1111996

Other (OTH) AF: 0.00 AC: 0 AN: 60396

GnomAD4 genome AF: 0.0000197 AC: 3 AN: 152102 Hom.: 0 Cov.: 32 AF XY: 0.0000135 AC XY: 1 AN XY: 74294

African (AFR) AF: 0.0000241 AC: 1 AN: 41416

American (AMR) AF: 0.00 AC: 0 AN: 15280

Ashkenazi Jewish (ASJ) AF: 0.00 AC: 0 AN: 3472

East Asian (EAS) AF: 0.00 AC: 0 AN: 5182

South Asian (SAS) AF: 0.00 AC: 0 AN: 4820

European-Finnish (FIN) AF: 0.00 AC: 0 AN: 10606

Middle Eastern (MID) AF: 0.00 AC: 0 AN: 316

European-Non Finnish (NFE) AF: 0.0000294 AC: 2 AN: 68008

Other (OTH) AF: 0.00 AC: 0 AN: 2090

Alfa AF: 0.0000386 Hom.: 0

Bravo AF: 0.0000453

ClinVar

ClinVar submissions as Germline

Significance: Uncertain significance

Revision: criteria provided, single submitter

Pathogenic	VUS	Benign	Condition
-	1	-	Cataract 20 multiple types (1)

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Benign	0.31
BayesDel_addAF	Uncertain	0.084	D
BayesDel_noAF	Uncertain	-0.030
CADD	Pathogenic	27
DANN	Uncertain	1.0
DEOGEN2	Uncertain	0.69	D
Eigen	Uncertain	0.40
Eigen_PC	Uncertain	0.40
FATHMM_MKL	Uncertain	0.93	D
LIST_S2	Uncertain	0.93	D
M_CAP	Uncertain	0.088	D
MetaRNN	Pathogenic	0.77	D
MetaSVM	Uncertain	-0.19	T
PhyloP100		4.8
PrimateAI	Benign	0.40	T
PROVEAN	Pathogenic	-7.0	D
REVEL	Uncertain	0.61
Sift	Uncertain	0.015	D
Sift4G	Uncertain	0.012	D
Polyphen		0.73	P
Vest4		0.52
MutPred		0.78		Loss of MoRF binding (P = 0.056)
MVP		0.87
MPC		0.21
ClinPred		0.83	D
GERP RS		3.2
Varity_R		0.48
gMVP		0.63
Mutation Taster		=52/48	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

Other links and lift over

dbSNP: rs915116953; hg19: chr3-186256586;