DOR is defined as the interval from the first documentation of a clinical response with or without radiological confirmation to the earlier of the first documentation of disease progression or death from any cause.

PFS is defined as the interval from the date of initiation of idelalisib to the earlier date of the first documentation of disease progression or death from any cause.

TTNT is defined as the interval from the initiation of treatment with idelalisib to the earlier date of the initiation of next systemic treatment of Follicular Lymphoma (excluding palliative care or palliative radiation) or death from any cause.

OS is defined as the interval from the date of initiation of idelalisib to death from any cause.