Study of JANX011 in Healthy Adult Volunteers to Assess Safety and Tolerability.

Inclusion Criteria: * Healthy men and women, in the opinion of the PI or designee and as determined by physical examination, laboratory screening tests, and medical history. * Aged 18 to 65 years, with a body weight between 50 to 120 kg and a body mass index (BMI) between 18 to 32 kg/m2 (all inclusive) at Screening. * Able and willing to provide written informed consent after the nature of the study has been explained and prior to the commencement of any study procedures. Exclusion Criteria: * Recent surgery requiring general anesthesia within 12 weeks prior to Screening or is expected to have surgery requiring general anesthesia during the course of the study. * Positive test for hepatitis C antibody (HCV), hepatitis B surface antigen (HBsAg), human immunodeficiency virus 1 (HIV-1) or HIV-2 antibodies. * Positive test for tuberculosis (TB) or history of TB (including prior positive interferon gold test result). * Use of any investigational medical device or investigational drug within 30 days or 5 half-lives of the investigational drug (whichever is longer) prior to dosing on Day 1.