Tocilizumab for the Prevention of Graft Versus Host Disease After Cord Blood Transplantation

Participants will receive a total dose of 400 cGy on day -2 and day -1 as 2 fractions (200 cGy x 2). Participants receiving total body irradiation (TBI) are treated in a standing position, and the treatment takes about 20 to 30 minutes.

Dilute in D5W or NS to make a 2.5 mg/ ml solution. Infuse slowly over approximately 1-4 hours (intermittent infusion) or 24 hours for continuous infusion.

A 1000 mg dose should be placed in 140 ml of D5W. Administer only with D5W, over at least 2 hours.

For participants \< 30kg, dilute with 50mL 0.9% sodium chloride. For participants ≥ 30kg, dilute to 100ml with 0.9% sodium chloride. Administer infusion over 60 minutes with infusion set.

The single use prefilled syringes contain either 300 mcg or 480 mcg Filgrastim at a fill volume of 0.5 mL or 0.8 mL, respectively. For the prevention/treatment of chemotherapy induced neutropenia, the dose of filgrastim is standardized per body weight: ≤ 60 kg = 300 mcg daily subcutaneously; \> 60 kg = 480 mcg subcutaneously daily.