CausalSentinel

Protein Dossier — MGAT4B (Alpha-1,3-mannosyl-glycoprotein 4-beta-N-acetylglucosaminyltransferase B)

MR feasibility tier: A — Published pQTL-MR estimates exist for this protein (retrieved below - not computed here).

1. Published MR estimates (retrieved, not computed)

Outcome beta se p method nSNP cis/trans coloc
Weight -0.024 0.00767 0.00178 Wald ratio 1 cis NA
Non-cancer illness code self-reported: deep venous thrombosis (dvt) 0.151 0.0531 0.00461 Wald ratio 1 cis NA
Eye problems or disorders: Diabetes related eye disease 0.237 0.0888 0.00777 Wald ratio 1 cis NA
Non-cancer illness code self-reported: migraine 0.116 0.0448 0.00979 Wald ratio 1 cis NA
Diagnoses - main ICD10: R14 Flatulence and related conditions 0.542 0.223 0.015 Wald ratio 1 cis NA
Body mass index (BMI) -0.0205 0.00869 0.0184 Wald ratio 1 cis NA
Eye problems or disorders: Glaucoma -0.21 0.0906 0.0206 Wald ratio 1 cis NA
Diagnoses - main ICD10: R55 Syncope and collapse 0.168 0.0785 0.0328 Wald ratio 1 cis NA
Myocardial infarction 0.0967 0.0461 0.036 Wald ratio 1 cis NA
Non-cancer illness code self-reported: hiatus hernia -0.131 0.0653 0.0446 Wald ratio 1 cis NA
Pallidum volume -15.5 8.35 0.0633 Wald ratio 1 cis NA
Non-cancer illness code self-reported: muscle or soft tissue injuries 0.161 0.0882 0.0685 Wald ratio 1 cis NA
…and 50 more outcomes (see JSON)              

2. pQTL instrument availability (Tier-B probe)

No prot-* pQTL GWAS dataset found for this protein (matched by UniProt accession and symbol).

3. GWAS Catalog results — traits with signal at this locus

10 association rows across 7 traits (9 genome-wide significant rows). Associations are loci, not causal claims; the mapped gene at a locus is not necessarily the effector gene.

Trait best p lead SNP n assoc study MR status
Alpha-1,3-mannosyl-glycoprotein 4-beta-N-acetylglucosaminylt 2e-198 rs113756550 2 GCST90248466 no MR -> candidate analysis
Blood protein levels 3e-62 rs58413676 1 GCST006585 no MR -> candidate analysis
Alpha-1,3-mannosyl-glycoprotein 4-beta-N-acetylglucosaminylt 2e-29 rs73351608 1 GCST90240236 no MR -> candidate analysis
Monocyte count 8e-21 rs6883116 3 GCST90002340 no MR -> candidate analysis
Platelet count (UKB data field 30080) 4e-12 rs6883116 1 GCST90468095 no MR -> candidate analysis
Plateletcrit 1e-10 rs6883116 1 GCST90002400 no MR -> candidate analysis
Major depressive disorder 6e-7 rs272440 1 GCST006041 no MR -> candidate analysis

4. Phenome map — where this gene is a genetic locus, vs. where MR exists

Top diseases by Open Targets association (of 105 total). Associations are loci, not causal claims. The causal-status column is a four-state triage per pair: established (curated) = a curated clinical assertion exists (ClinGen/G2P/GEL/Orphanet/ClinVar — any validity level, MR adds little); exploratory rare-variant signal = ExWAS burden evidence without curation — a candidate NEW gene-disease relationship; common-variant locus = GWAS signal, classic pQTL-MR territory; multi-layer = burden+GWAS together, an allelic-series candidate (the strongest causal setup). Burden estimand is carrier-vs-noncarrier, not per-SD MR.

Disease genetic assoc. burden (ExWAS) causal status MR status
neoplasm 0.267 common-variant locus MR: beta=0.148, p=0.111 (cis)
Abnormality of the skeletal system 0.079 common-variant locus no MR -> candidate analysis

Of the 2 rows above, 1 have no MR estimate in this resource. Across all retrieved diseases for this gene: 0 exploratory rare-variant signal(s), 0 multi-layer (allelic-series candidate) pair(s). Final triage still belongs to a statistical geneticist.

5. Downstream annotation (druggability & safety preview)

Layer Result
ChEMBL druggability not available — no ChEMBL target (undrugged)
gnomAD constraint pLI=3e-05, LOEUF=0.674 — LoF-tolerant
GWAS Catalog 54 unique SNPs / 108 rows
ClinVar 174 records; 2 pathogenic in sample of 30
PharmGKB/ClinPGx no annotations

Caveats declared by the tools

Sources

Provenance