CRYGC

Chr 2AD

crystallin gamma C

This protein is a dominant structural component of the vertebrate eye lens that maintains lens transparency and refractive index. Mutations cause multiple types of congenital cataracts including Coppock-like cataract and zonular pulverulent cataract, which typically follow an autosomal dominant inheritance pattern. The gene shows low constraint against loss-of-function variants, consistent with the dominant inheritance pattern observed in cataract families.

OMIMResearchSummary from RefSeq, UniProt
LOFmechanismADLOEUF 1.311 OMIM phenotype
Clinical SummaryCRYGC
Population Constraint (gnomAD)
Low constraint (pLI 0.00) — loss-of-function variants are relatively tolerated in the population.
Some data sources returned errors (1)

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Population Genetics & Constraint

gnomAD v4 — loss-of-function & missense intolerance

Tolerant — LoF & missense variants common in population
LoF Constraint
1.31LOEUF
pLI 0.001
Z-score 0.93
OE 0.67 (0.361.31)
Tolerant

Highly tolerant — LoF variants common in population

Missense Constraint
-0.60Z-score
OE missense 1.16 (1.011.35)
127 obs / 109.2 exp
Tolerant

Tolerant to missense variation

Observed / Expected Ratios
LoF OE0.67 (0.361.31)
00.351.4
Missense OE1.16 (1.011.35)
00.61.4
Synonymous OE1.12
01.21.6
LoF obs/exp: 6 / 9.0Missense obs/exp: 127 / 109.2Syn Z: -0.63
Curated Mechanism (G2P)Gene2Phenotype (DDG2P) ↗
definitiveCRYGC-related congenital cataractLOFAD
DN
0.77top 25%
GOF
0.4282th %ile
LOF
0.3647th %ile

The highest-scoring mechanism for this gene is dominant-negative.

DNprediction above median

Note: In-silico variant effect predictors (SIFT, PolyPhen, REVEL, CADD) may underestimate pathogenicity of missense variants in genes with GOF or DN mechanisms. Consider functional evidence and clinical context.

Predictions from Badonyi M, Marsh JA. PLoS ONE. 2024;19(8):e0307312.

ClinVar Variant Classifications

0 submitted variants in ClinVar

Protein Context — Lollipop Plot

CRYGC · protein map & ClinVar variants

Showing all ClinVar variants across the protein. Search a specific variant to highlight its position.

3D Protein StructureAlphaFold

Clinical Trials

Active and recruiting trials from ClinicalTrials.gov

No active trials found for this gene.

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Clinical Literature
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Full-Text Mentions
NLP-detected gene mentions in article bodies · via PubTator3
PubTator3
RNA
Luo T et al.·Zhejiang Da Xue Xue Bao Yi Xue Ban
2023
Modeling a cataract disorder in mice with prime editing
Lin J et al.·Mol Ther Nucleic Acids
2021Functional
Top 5 full-text resultsSearch PubTator3 ↗