A Phase 3, Randomized, Double-blind, Placebo-Controlled, Fixed-Dose, Multicenter Study to Examine the Efficacy and Safety of ZX008 in Subjects with CDKL5 deficiency disorder followed by an Open-Label Extension.

The purpose of this informed consent form is to collect data about the non-paid caregiver of a subject that is participating in ZX008-2103 study. You, as the non-paid caregiver, are being asked to complete the EQ-5D-5L Quality of Life Questionnaire.