2. Subject is male or female. Women of childbearing potential must be willing to use one of the following contraception methods (for at least 10 days prior to start of study drug and for 10 to 14 days after last dose of study drug): Oral contraceptive, Injectable progestogen, Implants of levonorgestrel, Estrogenic vaginal ring, Percutaneous contraceptive patches, Intrauterine device, Sterile male partner, Double-barrier method of contraception Women of non-child bearing potential include females regardless of age with functioning ovaries and who have a current tubal ligation (Hatcher, 2004), bilateral oophorectomy, or total hysterectomy, or post-menopausal females. Note: Post-menopausal is defined as 1 year without menses with an appropriate clinical profile (e.g., age appropriate, >45 years, in the absence of hormone replacement therapy).