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Clinical Trial Details — Status: Completed

Administrative data

NCT number NCT01199198
Other study ID # 2009-0862
Secondary ID
Status Completed
Phase Phase 4
First received
Last updated
Start date May 2011
Est. completion date September 2013

Study information

Verified date September 2020
Source M.D. Anderson Cancer Center
Contact n/a
Is FDA regulated No
Health authority
Study type Interventional

Clinical Trial Summary

The goal of this clinical research study is to learn if tolvaptan can help raise salt (sodium) levels in the cancer patients' blood by removing extra body water as urine.


Description:

The Study Drug:

Tolvaptan is designed to help raise salt levels in your blood by removing extra body water as urine.

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 1 of 2 groups. You will have an equal chance of being assigned to either group:

- If you are in Group 1, you will take tolvaptan and receive standard of care

- If you are in Group 2, you will take a placebo and receive the standard of care for patients with hyponatremia. A placebo is a tablet that looks like the study drug but has no active ingredients.

You will not know which group you are assigned. However, if needed for your safety, you will be able to find out what you are receiving at any time.

Study Drug Administration:

You will take tolvaptan or the placebo 1 time every day by mouth for 14 days.

If you are receiving the placebo, you will also receive the standard of care for hyponatremia. Examples of the standard of care include limiting your water and fluid intake, or giving you salt tablets and other drugs such as diuretics. Your doctor will describe these in more detail.

You will be given a drug diary to record when you take the study drug/placebo. You will return any unused drug/placebo at the end of 14 days.

You should avoid grapefruit and grapefruit juice while you are taking tolvaptan.

Study Visits:

At every visit, you will be asked if you have had any side effects.

On Days 1, 2, and 3:

- Blood (about 1 teaspoon) will be drawn for routine tests. On Day 1, this sample will be drawn 2 times.

- Your weight and vital signs will be measured.

- The study staff will record how much fluid you are drinking and how much you are urinating.

- You will be asked about any drugs that you may be taking.

- If the doctor thinks it is needed, you will have a physical exam.

On Day 7:

- Your medical history will be reviewed and updated.

- You will be asked about any drugs that you may be taking.

- Blood (about 1 teaspoon) will be drawn for routine tests and tests to measure how concentrated your blood results are.

- Your weight and vital signs will be measured.

On Day 14:

- Your medical history will be reviewed and updated.

- Your weight and vital signs will be measured.

- Blood (about 1 teaspoon) and urine will be collected for routine tests and tests to measure how concentrated your blood and urine are.

- The study staff will record how much fluid you are drinking and how much you are urinating.

- You will be asked about any drugs that you may be taking.

- You will complete the MMSE.

If the doctor thinks it is needed, you will have a physical exam.

Length of Study:

You will take the study drug/placebo for 14 days. You will be taken off study if you have intolerable side effects, if the disease gets worse, or if the study doctor thinks it is in your best interest.

Your participation on the study will be over once you have completed the end-of-study visit.

End-of-Study- Day 30 Follow-up Visit:

At 30 days after the last dose of study drug (or placebo), you will have an end-of-study visit in clinic or by telephone. At this visit, the following tests and procedures will be performed.

- Your medical history will be reviewed and updated.

- Blood (about 1 teaspoon) will be drawn for routine tests and tests to measure how concentrated your blood results are.

- You will be asked about any side effects that you may be having and any drugs that you may be taking.

- The study staff will record how much fluid you are drinking and how much you are urinating.

- If the doctor thinks it is needed, you will have a physical exam.

This is an investigational study. Tolvaptan is FDA approved and commercially available to treat hyponatremia (low levels of salt [sodium] in the blood due to too much body water). Its use in patients with cancer who have hyponatremia is investigational.

Up to 170 patients will take part in this study. All will be enrolled at MD Anderson.


Recruitment information / eligibility

Status Completed
Enrollment 52
Est. completion date September 2013
Est. primary completion date September 2013
Accepts healthy volunteers No
Gender All
Age group 18 Years and older
Eligibility Inclusion Criteria:

1. Euvolemic or hypervolemic (patients with heart or liver failure) with cancer admitted to MD Anderson Cancer Center for any reasons with serum sodium between 125 and 130 mEq/L (both inclusive)

2. Patients must be greater than or equal to 18 years of age

3. Patient has an Eastern Cooperative Oncology Group (ECOG) performance status of 0-3 at baseline.

4. Women of childbearing potential must use a medically accepted method of contraception and to continue use of this method for the duration of the study and for 30 days after study participation. Acceptable methods of contraception include abstinence, barrier method with spermicide, intrauterine device (IUD), or steroidal contraceptive (oral, transdermal, implanted, and injected) in conjunction with a barrier method. Men must practice abstinence or use a barrier method of birth control, and must agree to continue use for the duration of the study and for 30 days after study participation.

5. Subjects must be able to comply with scheduled visits and follow-ups.

6. Informed consent must be signed

Exclusion Criteria:

1. History of hypersensitivity to tolvaptan

2. Patients admitted to the critical care unit.

3. Patients with renal failure(creatinine clearance less than 25 ml/min)

4. Patients with a life expectancy less than 3 months

5. Patients with volume depletion, BP < 100/60 or urinary sodium <20 meq/L.

6. Patients who are not able to swallow or cannot take medication through feeding tubes

7. Patients with diuretic-induced hyponatremia.

8. Patients with spurious hyponatremia

9. Patients with hyponatremia related to psychogenic polydypsia, head trauma, post operative conditions, uncontrolled hypothyroidism or cortisol insufficiency or any hyponatremia associated with the use of medication that can be safely withdrawn.

10. The use of alcohol while participating in the study

11. Currently taking demeclocycline, lithium, benzazepine derivatives, ketoconazole, grapefruit, grapefruit juice and receiving strong CYP3A inhibitors such as clarithromycin, fluconazole, voriconazole, posaconazole, itraconazole, ritonavir, indinavir, nelfinavir, saquinavir, nefazodone, and telithromycin.

Study Design


Related Conditions & MeSH terms


Intervention

Drug:
Tolvaptan
Starting dose 15 mg by mouth once a day for 14 days.
Placebo
Placebo by mouth once a day for 14 days.

Locations

Country Name City State
United States UT MD Anderson Cancer Center Houston Texas

Sponsors (2)

Lead Sponsor Collaborator
M.D. Anderson Cancer Center Otsuka Pharmaceutical Development & Commercialization, Inc.

Country where clinical trial is conducted

United States, 

Outcome

Type Measure Description Time frame Safety issue
Primary Participants Whose Serum Sodium Concentration Corrected to at Least 135 mEq/L on Day 14 Compare proportion of hyponatremia cancer patients with a normalized serum sodium concentration at day 14 between those treated with Tolvaptan and those treated with a placebo (standard of care). Proportion of participants whose serum sodium concentration is corrected to at least 136 mEq/Lon day14. 14 days
Secondary Length of Stay in Hospital From administration of treatment to time of discharge
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