Solifenacin Compared to Clonidine for Reducing Hot Flashes Among Breast Cancer Patients

NCT ID: NCT01530373

Last Updated: 2025-04-29

Study Results

Results pending

The study team has not published outcome measurements, participant flow, or safety data for this trial yet. Check back later for updates.

Basic Information

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Recruitment Status

RECRUITING

Clinical Phase

PHASE2

Total Enrollment

110 participants

Study Classification

INTERVENTIONAL

Study Start Date

2012-02-29

Study Completion Date

2027-09-30

Brief Summary

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Hot flashes present a considerable problem for many breast cancer patients; these symptoms may be intensified by hormonal therapies, such as aromatase inhibitors or tamoxifen. This study examines the value of solifenacin (a muscarinic acetylcholine receptor antagonist) in reducing hot flashes, compared with clonidine (a medication often used for treating hot flashes).

Detailed Description

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There has been considerable interest in developing new treatment strategies for managing hot flashes among women with breast cancer, in view of the limitations associated with currently available treatments. This randomized study evaluates the safety and efficacy of 3 weeks of solifenacin compared to 3 weeks of clonidine, for women receiving adjuvant hormonal therapy (aromatase inhibitors or tamoxifen) for breast cancer.

Conditions

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Hot Flashes Breast Cancer

Study Design

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Allocation Method

RANDOMIZED

Intervention Model

PARALLEL

Primary Study Purpose

SUPPORTIVE_CARE

Blinding Strategy

TRIPLE

Participants Investigators Outcome Assessors

Study Groups

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solifenacin

oral solifenacin 5.0 mg daily for 3 weeks

Group Type EXPERIMENTAL

solifenacin

Intervention Type DRUG

oral solifenacin 5.0 mg daily for 3 weeks

clonidine

oral clonidine 0.1 mg daily for 3 weeks

Group Type ACTIVE_COMPARATOR

Clonidine

Intervention Type DRUG

oral clonidine 0.1 mg daily for 3 weeks

Interventions

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solifenacin

oral solifenacin 5.0 mg daily for 3 weeks

Intervention Type DRUG

Clonidine

oral clonidine 0.1 mg daily for 3 weeks

Intervention Type DRUG

Other Intervention Names

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Vesicare Catapres, Dixarit

Eligibility Criteria

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Inclusion Criteria

* Women with a history of invasive breast cancer or DCIS
* Currently taking aromatase inhibitors or tamoxifen
* Not receiving hormone replacement therapy for minimum of one month
* Age 18 years or older
* Self-reported hot flashes at least fourteen times per week
* Self-reported hot flashes for at least one month
* If receiving non-tricyclic antidepressants (venlafaxine, paroxetine, citalopram, sertraline, etc.) or gabapentin, no change in regimen in past 4 weeks.

Exclusion Criteria

* Receiving any other treatment for hot flashes within the past month, including estrogens, progestins, androgens, or gabapentin.
* Current use of clonidine or solifenacin. (If patients have been off of these for one month, then they are eligible)
* History of severe renal or moderate or severe hepatic impairment, as indicated by physical exam and medical record
* Concurrent or planned chemotherapy or radiotherapy (within next 3 months)
* Currently receiving tricyclic antidepressants, monoamine oxidase inhibitors, barbiturates, pimozide.
* Currently using CYP3A4 inducers (i.e., aminoglutethimide, carbamazepine, dexamethasone, efavirenz, ethosuximide, griseofulvin, modafinil, nafcillin, nevirapine, oxcarbazepine, phenobarbital, phenylbutazone, phenytoin, primidone, rifabutin, rifampin, rifapentine, St. John's Wort, sulfadimidine, sulfinpyrazone, troglitazone) or potent CYP3A4 inhibitors (i.e., chloramphenicol, clarithromycin, erythromycin, imatinib mesylate, indinavir sulfate, itraconazole, ketoconazole, nefazoldone, nelfinavir mesylate, ritonavir, telithromycin, troleandomycin).
* Uncontrolled or poorly controlled narrow-angle glaucoma, urinary retention, gastric retention (evaluated from history \& physical exam and medical record)
* Hypotension or uncontrolled hypertension (160/95 \> BP \< 100/60)
* Severe coronary insufficiency, conduction disturbances, recent myocardial infarction (within past 3 months), cerebrovascular disease, syncope (evaluated from history \& physical and medical record)
* History of allergy or adverse reactions to clonidine or solifenacin
* ECOG status \> 2 (in bed more than 50% of day)
Minimum Eligible Age

18 Years

Eligible Sex

FEMALE

Accepts Healthy Volunteers

No

Sponsors

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University of Arkansas

OTHER

Sponsor Role lead

Responsible Party

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Responsibility Role SPONSOR

Principal Investigators

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Allen C Sherman, PhD

Role: PRINCIPAL_INVESTIGATOR

Universitiy of Arkansas for Medical Sciences

Locations

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Winthrop P. Rockefeller Cancer Institute, University of Arkansas for Medical Sciences

Little Rock, Arkansas, United States

Site Status RECRUITING

Countries

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United States

Central Contacts

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Allen C Sherman, PhD

Role: CONTACT

501-686-8700

Facility Contacts

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Allen C Sherman, PhD

Role: primary

501-686-8700

Other Identifiers

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132500

Identifier Type: -

Identifier Source: org_study_id

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