Some researchers suggest that anti-Ro60 abs are sufficient to diagnose pSS, while anti-La/SSB abs are heterogenous and may be present in other autoimmune diseases, such as systemic lupus erythematosus (SLE), neonatal lupus erythematosus (NLE), and inflammatory myositis as well as pSS. This evidence concerns the gene SSB and systemic lupus erythematosus.