Inclusion Criteria:

• Laboratory values meet the criteria specified in the protocol.
• A condition of general good health, based upon the results of a medical history, physical examination, vital signs, laboratory profile, and a 12-lead electrocardiogram (ECG).

Exclusion Criteria:

• History of any clinically significant illness/infection/major febrile illness, hospitalization, or any surgical procedure within 30 days prior to the first dose of study drug.
• Chronic recurring infection and/or active viral infection.
• Consumption of alcohol, grapefruit products, Seville oranges, starfruit products or quinine/tonic water within the 72-hour period prior to study drug administration.
• Use of tobacco or nicotine-containing products within 90 days prior to the first dose of study drug.
• Evidence of dysplasia or history of malignancy (including lymphoma and leukemia) other than successfully treated non-metastatic cutaneous squamous cell, basal cell carcinoma or localized carcinoma in situ of the cervix.
• History or evidence of active tuberculosis (TB) disease or latent TB infection
• Prior exposure to ABBV-722 within 90 days prior to the first dose of study drug.