Study Evaluating The Role of ClO2 on Mucositis for Pt. Undergoing Head/Neck Radiotherapy

PRIMARY OBJECTIVES:

I. To evaluate and compare CloSYS Unflavored Oral Rinse effect on the incidence of severe
oral oral mucositis (OM) (>= World Health Organization [WHO] grade 3).

SECONDARY OBJECTIVES:

I. To evaluate and compare CloSYS Unflavored Oral Rinse effect on the time to onset of severe
OM (>= WHO grade 3).

II. To evaluate and compare CloSYS Unflavored Oral Rinse effect on the duration of severe OM
(>= WHO grade 3).

III. To evaluate and compare CloSYS Unflavored Oral Rinse effect in patient reported outcomes
as measured by the Oral Mucositis Weekly Questionnaire (OMWQ).

IV. To evaluate and compare CloSYS Unflavored Oral Rinse effect on rates of radiation therapy
(RT) interruption.

V. To evaluate and compare CloSYS Unflavored Oral Rinse effect on the oral microbiome.

VI. To evaluate and compare CloSYS Unflavored Oral Rinse effect on salivary TNFalpha,
IL-1beta, and IL-6 levels.

OUTLINE: Patients are randomized into 1 of 2 arms.

ARM I: Patients receive chlorine dioxide sterilization oral rinse over 30 seconds twice daily
(BID) from the start of radiation therapy (RT) to the evening prior to the 1 month RT
follow-up appointment.

ARM II: Patients receive placebo oral rinse over 30 seconds BID from the start of RT to the
evening prior to the 1 month RT follow-up appointment.

After completion of study, patients are followed up on day 1.

Inclusion Criteria:

- Able to provide properly obtained written informed consent

- Pathologically-confirmed diagnosis of head and neck malignancy (stage I-IV)

- Planned to receive high dose RT >= 50 gray (Gy) to visualizable oral cavity and/or
oropharyngeal mucosa, with or without administration of concurrent systemic therapy

- Karnofsky performance status of >= 60, within 45 days of registration

- Hematocrit (Hct) > 20 within 90 days of registration to the study

- Normal cognition and willingness to complete OMWQ and Patient-Reported Outcomes
version of the Common Terminology Criteria for Adverse Events (PRO-CTAE) forms at each
designated time point along with oral rinse diary

- Life expectancy >= 3 months

- Willing to tolerate oral rinsing for 30 second intervals

- Negative serum pregnancy test in females of childbearing age

- Must be willing to use an effective form of birth control if of child bearing
potential

Exclusion Criteria:

- Known hypersensitivity to chlorine dioxide products

- Chlorine dioxide product usage within the past 7 days prior to registration for this
study

- Utilization of any antibiotic medications (topical or systemic) within past 7 days
prior to registration for this study

- Utilization of daily anti-inflammatory or corticosteroid medication (topical or
systemic) for chronic indication other than daily low dose aspirin (81 mg)

- Sjogrens disease

- Medically documented glucose-6-phosphate dehydrogenase (G6PD) deficiency

- Baseline hematocrit =< 20%

- Planned daily RT of less than 5 weeks duration

- Known history of human immunodeficiency virus (HIV) or acquired immunodeficiency
syndrome (AIDS)

- Current pregnancy