Caphosol in Sarcoma Patients With Mucositis

Chemotherapy and radiation therapy can hurt normal cells in the gastrointestinal tract
(which includes the mouth and intestines). When this happens, it can cause mucositis
(inflammation of the lining of the mouth, throat, and intestines). Researchers want to
compare the effects of calcium phosphate and baking soda on patients who are at risk for
mucositis.

The Study Drugs:

Caphosol (calcium phosphate) is a saliva-like liquid that is designed to replace the
chemical and pH (acid) balance in the mouth. It is used as a mouth rinse to moisten,
lubricate, and clean the mouth, including the lining of the mouth, tongue, and throat. It
is also used to loosen thick mucous and help prevent the mucous membranes from sticking
together.

Baking soda is used as the standard of care for preventing and treating mucositis.

Study Groups:

If you are found to be eligible to take part in this study, you will be randomly assigned
(as in the flip of a coin) to receive either calcium phosphate mouth rinse or the baking
soda mouth rinse during the study. There is an equal chance of being assigned to either
group.

You will use the mouth rinse 5 times every day. The study staff will explain how to mix and
rinse with it.

Calcium phosphate should be stored at room temperature and should not be refrigerated. If
you are on a low sodium diet, you should check with your doctor before using calcium
phosphate.

Baseline Tests:

The following tests and procedures will be performed before you receive your first dose of
chemotherapy:

- Blood (about 3 teaspoons) will be drawn for routine tests.

- The mucous membranes in your mouth will be checked. You will be asked to complete a
questionnaire (about 15 minutes) on how you feel.

- You will be given a diary before you start each cycle to record if you have any mouth
pain.

Study Tests:

You will need to come to M. D. Anderson on around Days 10, 12, and 14 (depending on the
status of the mucositis) of each chemotherapy cycle. During these clinic visits, the
following tests and procedures may be performed:

- You will have a physical exam, including measurement of your vital signs and weight.

- Blood (about 3 teaspoons) will be drawn for routine tests.

- The mucous membranes in your mouth will be checked. Also, you may have your mouth and
throat photographed.

- You will be asked to complete the questionnaire on how you feel.

- When possible, the optical imaging procedures will also be performed on these days.

Length of Study and Reasons for Leaving the Study Early:

You will take part in this study for up to 18 weeks (4 to 5 months). You will be taken off
study if you experience intolerable side effects.

End of Study Visit:

You will also have an end of study visit after you complete 6 cycles of study drug, if you
are taken off study for any reason, or if you choose to leave the study. During this visit,
the following tests and procedures will be performed:

- You will have a physical exam, including measurement of your vital signs and weight.

- Blood (about 3 teaspoons) will be drawn for routine tests.

- The mucous membranes in your mouth will be checked.

- You will be asked to complete the questionnaire on how you feel.

- You will receive a phone call from the nurse after you last dose of study drug to
follow up on any side effects.

This is an investigational study. Caphosol (calcium phosphate) is FDA approved and
commercially available for use in preventing and treating mucositis, and for relief of dry
mouth during high dose chemotherapy or radiation treatment.

Up to 30 patients will take part in this study. All will be enrolled at M. D Anderson.