Investigating the causal role of the gut microbiota in esophageal cancer and its subtypes: a two-sample Mendelian randomization study

Table 1 Data sources for this study and details of genome-wide association studies

Exposure or outcome	Sample size	Ancestry	Links for data download
Gut microbiome	18,340 participants	Mixed	https://mibiogen.gcc.rug.nl
Esophageal cancer	372,756participants	European	https://gwas.mrcieu.ac.uk/datasets/ieu-b-4960/
Esophageal adenocarcinoma	4112 patients,17,159 controls	European	http://ftp.ebi.ac.uk/pub/databases/gwas/summary_statistics/GCST003001-GCST004000/GCST003739/

ISSN: 1471-2407