The company is focused on CNS diseases, such as epilepsy, ADHD, memory problems, narcolepsy, Parkinson's disease and restless legs syndrome (RLS), and immunology such as allergies, ankylosing spondylitis, Crohn's disease, juvenile rheumatoid arthritis and RA, osteoporosis, psoriatic arthritis, respiratory disorders, rheumatoid arthritis and systemic lupus (SLE). Lead drugs include Cimzia (certolizumab pegol), Vimpat (lacosamide), Neupro (rotigotine) and Keppra (levetiracetam).