Familial aggregation and heritability: a nationwide family-based study of idiopathic inflammatory myopathies.
Weng Ian CheHelga WesterlindIngrid E LundbergKarin HellgrenRalf Kuja-HalkolaMarie HolmqvistPublished in: Annals of the rheumatic diseases (2021)
IIM has a familial component with a risk of aggregation among first-degree relatives and a heritability of about 20%. This information is of importance for future aetiological studies and in clinical counselling.