GPC6

Chr 13AR

glypican 6

Also known as: OMIMD1

The protein is a cell surface heparan sulfate proteoglycan that functions as a coreceptor for growth factors, extracellular matrix proteins, and proteases. Mutations cause omodysplasia 1, a skeletal dysplasia characterized by limb shortening and facial dysmorphism. The condition follows autosomal recessive inheritance.

OMIMResearchSummary from RefSeq, OMIM, UniProt
LOFmechanismARLOEUF 0.511 OMIM phenotype
Clinical SummaryGPC6
Population Constraint (gnomAD)
Constrained for loss-of-function variants (OE-LoF 0.26) despite low pLI — interpret in context.
📋
ClinVar Variants
92 unique Pathogenic / Likely Pathogenic· 225 VUS of 489 total submissions

Population Genetics & Constraint

gnomAD v4 — loss-of-function & missense intolerance

Moderate LoF intolerance
LoF Constraint
0.51LOEUF
pLI 0.142
Z-score 3.31
OE 0.26 (0.140.51)
Moderately constrained

More LoF-intolerant than ~75% of genes

Missense Constraint
0.90Z-score
OE missense 0.86 (0.780.95)
276 obs / 321.5 exp
Tolerant

Mild missense constraint

Observed / Expected Ratios
LoF OE0.26 (0.140.51)
00.351.4
Missense OE0.86 (0.780.95)
00.61.4
Synonymous OE1.14
01.21.6
LoF obs/exp: 6 / 23.2Missense obs/exp: 276 / 321.5Syn Z: -1.17
Curated Mechanism (G2P)Gene2Phenotype (DDG2P) ↗
strongGPC6-related omodysplasiaLOFAR

Predictions shown for reference only — model trained on dominant genes, not applicable to AR conditions.

DN
0.6453th %ile
GOF
0.6346th %ile
LOF
0.2873th %ile

The Badonyi & Marsh prediction model was trained exclusively on dominant disease genes. Predictions are not reliable for genes with autosomal recessive inheritance and are shown at reduced opacity for reference only.

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

ClinVar Variant Classifications

489 submitted variants in ClinVar

Classification Summary

Pathogenic91
Likely Pathogenic1
VUS225
Likely Benign86
Benign63
Conflicting9
91
Pathogenic
1
Likely Pathogenic
225
VUS
86
Likely Benign
63
Benign
9
Conflicting

Curated Variants Distribution

Classified variants from ClinVar · 5 ACMG categories

ClassificationLoFMissense + InframeNon-codingSynonymousTotal
Pathogenic
3
1
87
0
91
Likely Pathogenic
0
0
1
0
1
VUS
0
125
95
5
225
Likely Benign
0
2
37
47
86
Benign
0
4
55
4
63
Conflicting
9
Total313227556475

LoF = frameshift, stop gained/lost, canonical splice · Counts from ClinVar esearch · Updated hourly

View in ClinVar →

Protein Context — Lollipop Plot

GPC6 · 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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