Clinicaltrials.gov info:Does anyone know why 2 of these studies...

Clinicaltrials.gov info:

Does anyone know why 2 of these studies on the gov site say still recruiting?

http://clinicaltrials.gov/ct2/results?term=invion&Search=Search

...


Recruiting Efficacy and Safety of Beta-adrenoceptor Inverse Agonist, Nadolol, in Mild Asthma
Condition: Mild Persistent Asthma, Uncomplicated
Interventions: Drug: Nadolol; Drug: Placebo

Not yet recruiting Efficacy and Safety of ?eta-adrenoceptor Inverse Agonist, Nadolol, In Smoking Cessation of Patients With Pre-existing COPD
Condition: Smoking Cessation
Interventions: Drug: Nadolol; Drug: Placebo

...

Recruiting Double-Blinded, Randomized, Placebo-Controlled Study to Investigate the Safety, Tolerability, Pharmacokinetics, and Biochemical Activity of Intravenous Cpn10 Administration in Subjects With SLE.
Condition: Lupus Erythematosus, Systemic
Interventions: Biological: Ala-Cpn10; Drug: Placebo