Gout and the risk of COVID-19 diagnosis and death in the UK Biobank: a population-based study
Ruth K Topless, MD Angelo Gaffo, Lisa K Stamp, Philip C Robinson, Nicola Dalbeth, Prof Tony R Merriman
The Lancet Rheumatology, doi:10.1016/s2665-9913(21)00401-x
Background There is a paucity of data on outcomes for people with gout and COVID-19. We aimed to assess whether gout is a risk factor for diagnosis of COVID-19 and COVID-19-related death, and to test for sex-and drug-specific differences in risk.
Methods We used data from the UK Biobank, which included 15 871 people with gout. We used multivariable-adjusted logistic regression in the following analyses using a case-control study design: to test for an association between gout and COVID-19 diagnosis in the entire UK Biobank cohort (n=459 837); to test for an association between gout and COVID-19-related death in people who were known to have died or survived with COVID-19 (n=15 772); to test for an association between gout and COVID-19-related death in the entire UK Biobank cohort (n=459 837); and to assess risk of COVID-19-related death in a subset of patients from the UK Biobank cohort with prescription data, stratified by prescription of urate-lowering therapy and colchicine (n=341 398). Models 1 and 2 were adjusted for age group, sex, ethnicity, Townsend deprivation index, BMI, and smoking status. Model 2 was also adjusted for diagnosis of 16 other diseases that are established comorbidities of gout or established risk factors for COVID-19-related death. Findings Gout was associated with diagnosis of COVID-19 (odds ratio [OR] 1•20, 95% CI 1•11-1•29) but not with risk of COVID-19-related death in the cohort of patients diagnosed with COVID-19 (1•20, 0•96-1•51). In the entire cohort, gout was associated with COVID-19-related death (1•29, 1•06-1•56); women with gout had an increased risk of COVID-19-related death (1•98, 1•34-2•94), whereas men with gout did not (1•16, 0•93-1•45). We found no significant differences in the risk of COVID-19-related death according to prescription of urate-lowering therapy or colchicine. When patients with gout were stratified by vaccination status, the risk of diagnosis with COVID-19 was significant in the non-vaccinated group (1•21, 1•11-1•30) but not the vaccinated group (1•09, 0•65-1•85). Interpretation Gout is a risk factor for COVID-19-related death in the UK Biobank cohort, with an increased risk in women with gout, which was driven by risk factors independent of the metabolic comorbidities of gout.
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