A Safety and Tolerability Study of RJX Drug Product in Healthy Participants

Inclusion Criteria

• Healthy male and female participants aged 18 to 50 years inclusive (Cohort 1 to Cohort 5) or 51 to 70 years inclusive (Cohort 6 only),at the time of screening;
• Have a body mass index of 18 kg/m2 to 35 kg/m2, inclusive, at screening. In addition, weight cannot exceed 132 kg;
• Have negative screening assessment for viral hepatitis (hepatitis B or hepatitis C) and human immunodeficiency virus;
• Have negative routine urine drug screen and negative alcohol breath test at screening and Day -1;
• A female participant is eligible to participate if she is not pregnant,not breastfeeding, and at least 1 of the following conditions applies:
• Not of childbearing potential, defined as surgically sterile (documented hysterectomy, bilateral salpingectomy, tubal ligation or bilateral oophorectomy) or postmenopausal (no menses for 12 months without an alternative medical cause. A high follicle stimulating hormone (FSH) level in the postmenopausal range may be used to confirm a postmenopausal state in women not using hormonal contraception or hormonal replacement therapy; however, in the absence of 12 months of amenorrhea, a single FSH measurement is insufficient);
• Of childbearing potential and agrees to use 2 highly effective methods of contraception consistently during the treatment period and for at least 60 days after the last dose of investigational product;
• A male participant with a female partner of childbearing potential is eligible to participate if he agrees to use acceptable contraception during the treatment period and for at least 60 days after the last dose of investigational product and refrains from donating sperm during this period;
• Clinical laboratory test results within normal reference range for the population or investigator site, or any results that are judged to be not clinically significant by the investigator;
• Venous access sufficient to allow for blood sampling per the protocol;
• Reliable and willing to make themselves available for the duration of the study and are willing to follow study procedures;
• Given written informed consent prior to any study procedures being performed

Exclusion Criteria

• Have a history of clinically relevant cardiovascular disease, cancer, respiratory, hepatic, renal, gastrointestinal, endocrine (diabetes), hematological, or neurological disorders. Cohort 6 only - elderly participants with well controlled hypercholesterolemia on a stable dose of statin therapy or well controlled hypertension on a stable dose of antihypertensive medication(s), excluding diuretics, are allowed in Cohort 6 per the clinical judgment of the investigator.
• Have impaired renal function (defined as estimated glomerular filtration rate 440 ms in males and >450 ms in females;
• Have a supine systolic blood pressure (BP) greater than 140 mm Hg or a diastolic BP greater than 90 mm Hg. Up to 2 additional measurements may be undertaken after an appropriate resting interval at screening to confirm eligibility;
• Are currently enrolled in a clinical trial involving an investigational product, or are concurrently enrolled in any other type of medical research judged not to be scientifically or medically compatible with this study;
• Have received an investigational product within the last 3 months;
• Have suspected allergies to RJX, related compounds, or any components of the formulation, or history of significant atopy;
• Regularly use known drugs of abuse and/or show positive findings on drug screening or Day -1;
• Are women who are pregnant, intend to become pregnant, or are lactating;
• Participants will be excluded for using any of the following medication:
• aspirin, multivitamins/vitamins or mineral preparations within 14 days prior to investigational product administration or 24 hours post the last infusion;
• prescription, herbal or over the counter medications within 14 days of investigational product administration, with the exception of:
• simple