The Cia21 locus on chromosome 3 has been associated with rheumatoid arthritis severity in females. Here the authors show this locus houses a non-coding polymorphic estrogen receptor binding site and how it regulates neighbouring gene expression of CD2, implicating CD2 signalling in the sexual dimorphism of a variety of T cell-dependent autoimmune diseases.
- Gonzalo Fernandez Lahore
- Michael Förster
- Rikard Holmdahl