Is granuloma annulare (GA) associated with type 2 diabetes, hyperlipidemia, autoimmune conditions, and hematologic malignant neoplasms?
In this population-based cohort study of 5137 individuals with granuloma annulare and 51 169 controls, individuals with GA were more likely than those without GA to have baseline diabetes (21% vs 13%) and hyperlipidemia (33% vs 28%) as well as baseline hypothyroidism (14% vs 11%) and incident hypothyroidism (0.8% vs 0.5%). There was no association between GA and an increased risk of hematologic malignant neoplasms.
This findings of this study suggest that diabetes and hyperlipidemia may be risk factors for the development of GA and that autoimmunity may play a role in the pathogenesis of GA.
Although granuloma annulare (GA) has been associated with several other conditions, these studies have been limited by single-center designs and small sample sizes.
To evaluate whether there is an association between GA and type 2 diabetes, hyperlipidemia, autoimmune conditions, and hematologic malignant neoplasms, using a large population-based cohort study.
Design, Setting, and Participants
This retrospective cohort study conducted between January 1, 2016, and June 30, 2019, used deidentified data from the US Optum Clinformatics Data Mart Database. A total of 5137 patients with GA were matched by age and sex with up to 10 randomly selected controls (n = 51 169) with a diagnosis of a nevus or seborrheic keratosis.
Main Outcomes and Measures
Logistic regression was used to evaluate for potential associations between GA and diabetes, hyperlipidemia, autoimmune conditions, and hematologic malignant neoplasms. All analyses were adjusted for race/ethnicity, income, and educational level.
This study included 5137 individuals with GA (3760 women [73.2%]; mean [SD] age, 57.7 [19.0] years) and 51 169 controls (37 456 women [73.2%]; mean [SD] age, 57.7 [19.0] years). Those with GA were more likely than controls to have baseline diabetes (1086 [21.1%] vs 6780 [13.3%]; adjusted odds ratio [aOR], 1.67; 95% CI, 1.55-1.80), hyperlipidemia (1669 [32.5%] vs 14 553 [28.4%]; aOR, 1.15; 95% CI, 1.08-1.23), hypothyroidism (727 [14.2%] vs 5780 [11.3%]; aOR, 1.24; 95% CI, 1.15-1.36), and rheumatoid arthritis (62 [1.2%] vs 441 [0.9%]; aOR, 1.34; 95% CI, 1.02-1.75). Those with GA were more likely to have incident diabetes (144 [2.8%] vs 1061 [2.1%]; aOR, 1.31; 95% CI, 1.10-1.57), hypothyroidism (41 [0.8%] vs 252 [0.5%]; aOR, 1.59; 95% CI, 1.14-2.22), systemic lupus erythematosus (21 [0.4%] vs 65 [0.1%]; aOR, 3.06; 95% CI, 1.86-5.01), and rheumatoid arthritis (26 [0.5%] vs 122 [0.2%]; aOR, 2.05; 95% CI, 1.34-3.13). There was no association between GA and an increased risk of hematologic malignant neoplasms.
Conclusions and Relevance
This population-based cohort study identified associations between GA and baseline diabetes and hyperlipidemia as well as between GA and both baseline and incident autoimmune conditions. These findings suggest that diabetes and hyperlipidemia may be risk factors for the development of GA and that autoimmunity may be an important factor in the pathogenesis of GA.
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Barbieri JS, Rosenbach M, Rodriguez O, Margolis DJ. Association of Granuloma Annulare With Type 2 Diabetes, Hyperlipidemia, Autoimmune Disorders, and Hematologic Malignant Neoplasms. JAMA Dermatol. Published online June 09, 2021. doi:10.1001/jamadermatol.2021.1805
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