Filgotinib in Long-Term Extension Study of Adults With Crohn's Disease

Key Inclusion Criteria:

- Must have the ability to understand and sign a written informed consent form (ICF),
which must be obtained prior to initiation of study procedures associated with this
trial

- Must have enrolled in a Gilead-sponsored CD parent protocol, GS-US-419-4015,
GS-US-419-4016 or GS-US-419-3895

- Females of childbearing potential must have a negative pregnancy test at Day 1

- Males and females of childbearing potential who engage in heterosexual intercourse
must agree to use protocol specified method(s) of contraception as described in the
study protocol, for the duration described

- Willingness to refrain from live or attenuated vaccines during the study and for 12
weeks after last dose of study drug

- Must have completed all required procedures or met protocol specified efficacy
discontinuation criteria in a prior Gilead-sponsored filgotinib treatment study for CD

Key Exclusion Criteria:

- Known hypersensitivity to the study drug

- Any chronic medical condition (including, but not limited to, cardiac or pulmonary
disease, alcohol or drug abuse) that, in the opinion of the Investigator or sponsor,
would make the individual unsuitable for the study or would prevent compliance with
the study protocol

- Males or females of reproductive potential who are unwilling to abide by
protocol-specified contraceptive methods as defined in the study protocol

- Use of prohibited medications as outlined in the study protocol

NOTE: Other protocol defined Inclusion/ Exclusion criteria may apply.