Placebo Treatment Arm
Placebo (phosphate buffered saline) will be infused intravenously every 12 hours up to 15 doses maximum.
Rivipansel Treatment Arm
Rivipansel (GMI-1070) will be infused intravenously every 12 hours up to 15 doses maximum. Subjects aged 12 and over who weigh more than 40 kilograms will receive a dose of 1680 mg of rivipansel, followed by a dose of 840 mg of rivipansel every 12 hours. All subjects aged 6 to 11 years and any subject who weighs 40 kilograms or less, will receive weight-based dosing (mg/kg) of 40 mg/kg of rivipansel (maximum of 1680 mg) followed by a dose of 20 mg/kg of rivipansel (maximum of 840 mg) every 12 hours.