sphingomyelin (d18:2/14:0, d18:1/14:1)* to sphingomyelin (d18:1/20:0, d16:1/22:0)*

Numerator Metabolite

Metabolite Accession: GCST90199975
Name: sphingomyelin (d18:2/14:0, d18:1/14:1)*
Hmdb Id: NA
Super Pathway: NA
Sub Pathway: NA
Inchikey: NA

Denominator Metabolite

Structure of sphingomyelin (d18:1/20:0, d16:1/22:0)*
Metabolite Accession: GCST90200001
Name: sphingomyelin (d18:1/20:0, d16:1/22:0)*
Hmdb Id: HMDB0012102
Super Pathway: NA
Sub Pathway: NA
Inchikey: AADLTHQNYQJHQV

Associated Genomic Regions

Region: rs1871194

Click a 'Plot' button in the tables to the right to view a locus plot here.

Clumped rQTL variant

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SNP Summary

Chr:
19
Beta (Ratio):
0.235
Position:
8283819
SE (Ratio):
0.015
Effect Allele:
C
Z-score (Ratio):
15.207
Reference Allele:
A
-log10(P):
-118.571
MAF:
0.461
Beta (Num):
0.034
Novel Locus:
No
SE (Num):
0.013
Beta (Den):
-0.201
SE (Den):
0.016
No CNV overlap
rQTL cluster:
11
Reaction Distance:
NA
Closest Genes:
CERS4 FBN3 CD320 NDUFA7 NDUFA7

LLM Analysis

Numerator Metabolite Explanation:

Sphingolipid metabolism.5[1], 6[2]

Denominator Metabolite Explanation:

Sphingolipid metabolism.5[1], 6[2]

Ratio Explanation:

This ratio compares sphingomyelins with C14 acyl chains to those with C20-C22 chains, reflecting the substrate preference of ceramide synthases like CERS4.1[1], 3[2]

Ratio Evidence:

reaction where the ratio is shared through a pathway

Gene Ratio Phenotype Relationship:

Altered CERS4 activity, indicated by eQTL colocalization, changes the balance of sphingomyelin species.7[1] This dysregulation of sphingolipid metabolism is linked to both polyneuropathy and the inflammation associated with gout and elevated uric acid.8[2], 9[3], 10[4], 11[5]

Phenotype Driver:

Gene-centric:CERS4

Downloads

Download the full rQTL summary statistics file for this metabolite ratio. Data contains the loci listed here. For each SNP (chromosome, effect_allele, reference_allele, pos_name, position) these columns contain the summary statistics of the ratio (beta, pgain, pval, se, z), the numerator metabolite (beta_1, pval_1, n_iids_1, effect_allele_frequency_1, se_1, z_1) and the denominator metabolite (beta_2, pval_2, n_iids_2, effect_allele_frequency_2, se_2, z_2)

Download rQTL Data