2.2 Exposure and Outcome
Genetic variants related to herpes virus were obtained from the IEU open GWAS project (https://gwas.mrcieu.ac.uk/) and the FinnGen database (https://www.finngen.fi/). Detailed information regarding the GWAS data can be found inSupplemental Table 1. For the outcome data, which comprised 262 cases of leukocytoclastic angiitis and 207,482 healthy controls, we accessed data from the FinnGen consortium R7 release in 2021 (https://r7.finngen.fi/). It’s important to note that all the GWAS data used in this study originated from the European population.