Family history remains a strong independent risk factor for developing rheumatoid arthritis (RA). This Review provides an overview of the ways in which familial aggregation has been evaluated, discusses what these studies can tell us about the aetiology of RA, and considers the potential value of family history of RA for clinical care and for research.
- Thomas Frisell
- Saedis Saevarsdottir
- Johan Askling
