Epidemiologic, genetic and immunophenotypic evidence suggests that oligoarticular and polyarticular subtypes of juvenile idiopathic arthritis are distinct etiopathologic conditions with some overlapping pathogenic pathways. As discussed in this Review, further research is needed before we can generate a full molecular picture of these chronic childhood arthropathies.
- Claudia Macaubas
- Khoa Nguyen
- Elizabeth D. Mellins