sphingomyelin (d18:1/20:0, d16:1/22:0)* to sphingomyelin (d18:1/21:0, d17:1/22:0, d16:1/23:0)*

Numerator 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

Denominator Metabolite

Metabolite Accession: GCST90200053
Name: sphingomyelin (d18:1/21:0, d17:1/22:0, d16:1/23:0)*
Hmdb Id: NA
Super Pathway: NA
Sub Pathway: NA
Inchikey: NA

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):
-0.178
Position:
8283819
SE (Ratio):
0.011
Effect Allele:
C
Z-score (Ratio):
-16.658
Reference Allele:
A
-log10(P):
-141.787
MAF:
0.462
Beta (Num):
-0.201
Novel Locus:
No
SE (Num):
0.016
Beta (Den):
-0.023
SE (Den):
0.015
No CNV overlap
rQTL cluster:
11
Reaction Distance:
NA
Closest Genes:
CERS4 FBN3 CD320 NDUFA7 NDUFA7

LLM Analysis

Numerator Metabolite Explanation:

Sphingolipid metabolism

Denominator Metabolite Explanation:

Sphingolipid metabolism

Ratio Explanation:

The ratio reflects CERS4 activity, comparing sphingomyelins with C20:0/C22:0 acyl chains (numerator) to sphingomyelins with odd-chain or other acyl chains (denominator), which are less specific products of CERS4.

Ratio Evidence:

reaction where the ratio is shared through a pathway

Gene Ratio Phenotype Relationship:

Altered CERS4 activity likely dysregulates sphingolipid metabolism.5[1], 6[2] Aberrant sphingolipid profiles are linked to both polyneuropathy and inflammation associated with gout and elevated uric acid, suggesting a common underlying metabolic disturbance.7[3], 8[4], 9[5], 10[6]

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