GOSR2

Chr 17AR

golgi SNAP receptor complex member 2

Also known as: Bos1, EPM6, GS27, MYOS

This gene encodes a trafficking membrane protein that transports proteins from the cis/medial-Golgi to the trans-Golgi network. Biallelic mutations cause autosomal recessive progressive myoclonic epilepsy type 6 and congenital muscular dystrophy with or without seizures. The gene shows low constraint to loss-of-function variation (pLI near zero), consistent with its recessive inheritance pattern.

OMIMResearchSummary from RefSeq, OMIM, UniProt
MultiplemechanismARLOEUF 1.352 OMIM phenotypes
Clinical SummaryGOSR2
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Gene-Disease Validity (ClinGen)
progressive myoclonus epilepsy · ARDefinitive

Definitive — sufficient evidence for diagnostic panels

Population Constraint (gnomAD)
Low constraint (pLI 0.00) — loss-of-function variants are relatively tolerated in the population.
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Clinical Trials
1 active or recruiting trial — potential therapeutic options may be available

Population Genetics & Constraint

gnomAD v4 — loss-of-function & missense intolerance

Tolerant — LoF & missense variants common in population
LoF Constraint
1.35LOEUF
pLI 0.000
Z-score 0.63
OE 0.81 (0.511.35)
Tolerant

Highly tolerant — LoF variants common in population

Missense Constraint
-0.49Z-score
OE missense 1.12 (0.981.29)
138 obs / 122.8 exp
Tolerant

Tolerant to missense variation

Observed / Expected Ratios
LoF OE0.81 (0.511.35)
00.351.4
Missense OE1.12 (0.981.29)
00.61.4
Synonymous OE1.03
01.21.6
LoF obs/exp: 11 / 13.5Missense obs/exp: 138 / 122.8Syn Z: -0.15
DN
0.82top 10%
GOF
0.6540th %ile
LOF
0.2288th %ile

This gene has evidence for multiple mechanisms of pathogenicity (dominant-negative and gain-of-function). Both the Badonyi & Marsh prediction and the broader genomic evidence point to dominant-negative as the predominant mechanism. Different variants in this gene may act through different mechanisms — interpret in context of the specific variant.

DNprediction above median
GOFprediction 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

GOSR2 · protein map & ClinVar variants

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

3D Protein StructureAlphaFold
Clinical Literature
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