A Single-Dose Safety and Tolerability Placebo Controlled Study of Subcutaneous SCH 900222 in Healthy Volunteers

This early-stage study is testing the safety and tolerability of a single dose of a new investigational drug called SCH 900222, given by injection under the skin, in healthy volunteers. The aim is to understand how the body handles the drug and to confirm it is safe. This is one of the first tests of this drug in humans. You may be eligible if: - You are between 18 and 45 years old (male or female) - You are in good health - You have no history of latent or active tuberculosis You may NOT be eligible if: - You have a history of cancer, HIV infection, Hepatitis B, or Hepatitis C - You have active or latent tuberculosis (TB) Talk to your doctor about whether this trial might be right for you.