Subjects will receive 90 mg GC4419 per day (60 min IV infusion to complete within 60 minutes prior to IMRT), concurrent with daily fractions of IMRT (2.0-2.2 Gy) to a total of 60-72 Gy over approximately 7 weeks, plus cisplatin administered 100 mg/m2 once every three weeks for 3 doses or 40 mg/m2 once weekly for 6-7 doses (Investigator's choice).~All subjects will be assessed twice weekly for Oral Mucositis (OM) per WHO grading criteria until 28 days post end of study treatment period (last day of IMRT).
GTI-4419-202 is a Phase 2 open-label study of the effects of GC4419 (IV) when administered in combination with IMRT and cisplatin to up to subjects with head and neck cancer, who are at high risk for Severe Oral Mucositis (SOM)