IVIG in Patients With VGKC Ab Associated Autoimmune Epilepsy

GAMUNEX-C is a clear a ready-to-use sterile solution of human immune globulin protein for intravenous administration. Dose will be determined based on ideal wt. with not to exceed 80 grams. Subjects will receive 0.5g/kg daily for 1 day \[week 1 day 1\], then will receive 1g/kg not exceeding 80 grams daily for 1 day \[week 1 day 2\]. Then once every 2 weeks subjects will receive 0.6g/kg IVIG for 4 weeks \[week 3 and 5\] for 2 infusions.

Normal Saline is a sterile, nonpyrogenic solution for fluid and electrolyte replenishment. Dose will be determined based on ideal wt. with not to exceed 80 grams. Dose will be determined based on ideal wt. with not to exceed 80 grams. Subjects will receive 0.5g/kg daily for 1 day \[week 1 day 1\], then will receive 1g/kg not exceeding 80 grams daily for 1 day \[week 1 day 2\]. Then once every 2 weeks subjects will receive 0.6g/kg for 4 weeks \[week 3 and 5\] for 2 infusions.

Normal Saline is a sterile, nonpyrogenic solution for fluid and electrolyte replenishment. Subjects will receive 500 ml normal saline before and after the higher dose infusion of 1g/kg