A Study of the Effects of Food and Age on Danicopan
A Study of the Effects of Food and Age on Danicopan
This will be an open-label, 2-part study. Part 1 will be a randomized, 2-sequence, 2-period
 crossover, food-effect study in healthy young adult participants. Part 2 will be a 1-period
 age-effect study in healthy elderly male participants.
Inclusion Criteria:

 1. Young adult males or females, between 18 and 55 years of age (Part 1 only).

 2. Elderly male participants aged ≥ 65 years of age at screening (Part 2 only).

 3. Body mass index in the range of 18.0 to 32.0 kilograms (kg)/meter squared, inclusive,
 with a minimum body weight of 50.0 kg at screening.

 4. No clinically significant history or presence of electrocardiogram findings at
 screening.

 5. Non-sterile male participants must agree to abstinence or use a highly effective
 method of contraception.

 6. Female participants of childbearing potential must either agree to abstinence or to
 use, with their male partner, a highly effective method of contraception (Part 1
 only).

 Exclusion Criteria:

 1. Clinically significant laboratory abnormalities.

 2. Pregnant or lactating (Part 1 only).

 3. History of any medical or psychiatric condition or disease that might limit the
 participant's ability to complete or participate in this clinical study, confound the
 results of the study, or pose an additional risk to the participant by their
 participation in the study.

 4. History or presence of drug or alcohol abuse within previous 2 years, current tobacco
 user, and positive drugs-of-abuse or alcohol screen at screening or Day -1 of Period
 1.

 5. History of meningococcal infection, or a first-degree relative with a history of
 meningococcal infection.

 6. Body temperature ≥ 38.0°Celsius at screening or prior to (first) dosing in Period 1 or
 history of febrile illness, or other evidence of infection, within 14 days prior to
 (first) dosing.

 7. History of procedures that could alter absorption or excretion of orally administered
 drugs.

 8. A history of significant multiple and/or severe allergies or has had an anaphylactic
 reaction or significant intolerability to prescription or non-prescription drugs.

 9. Major surgery within previous 4 weeks.

 10. Participation in any other investigational study drug trial in which receipt of an
 investigational study drug occurred within 5 half-lives (if known) or 30 days before
 (first) dosing, whichever is longer.

 11. Donation of whole blood from 3 months prior to (first) dosing or of plasma from 30
 days before (first) dosing, receipt of blood products within 6 months prior to (first)
 dosing, or receipt of a vaccine within 30 days prior to (first) dosing.