This is a phase 1, randomized, double-blind, placebo-controlled, multiple ascending dose study. Thirty-six patients with osteoarthritis of the knee will be selected to participate. Patients will be randomized to receive either ABT-981 or placebo. ABT-981 or placebo will be administered as subcutaneous (under the skin) injections in four dosing groups. Subjects will be administered subcutaneous injections of ABT-981 for up to 8 weeks.

Read more: http://www.clinicaltrials.gov/ct2/show/NCT01668511?cond=%22Arthritis%22&lup_s=10/31/2013&lup_d=30