Clinical trial NCT00056251: Interstitial Cystitis
Official title: A Phase 2, Randomized, Double-Blind, Placebo-Controlled Study of the Safety and Efficacy of RTX Topical Solution in Patients With Interstitial Cystitis
Study type: INTERVENTIONAL
Overall status: COMPLETED
Phase: PHASE2
Conditions: Interstitial Cystitis
Keywords: Interstitial Cystitis
Bladder
Lead sponsor: ICOS Corporation
Sponsor class: INDUSTRY
First posted: 2003-03-10
Enrollment: 150
Sex: ALL
Minimum age (years): 18
Maximum age (years): 70
Standard ages: ADULT
OLDER_ADULT
Accepts healthy volunteers: no
Allocation: RANDOMIZED
Intervention model: PARALLEL
Primary purpose: TREATMENT

Brief summary: Patients with interstitial cystitis who meet eligibility requirements will be randomized to one of four treatment arms (3 RTX, Placebo). Study drug is administered as a single instillation within the urinary bladder. Study duration is 12 weeks.

Detailed description: RATIONALE:

Topical resiniferatoxin (RTX) administrated to the bladder may be effective in decreasing the symptoms associated with interstitial cystitis through its action on pain sensing neurons.

PURPOSE:

Randomized, double-blind, placebo-controlled, Phase 2 trial to determine the safety and efficacy of RTX in patients with interstitial cystitis.

Eligibility criteria: Inclusion Criteria:

* ≥ 18 years of age.
* Have IC that meets disease diagnostic criteria as defined by a history of the following:
* Cystoscopy/hydrodistension with a diagnosis of IC confirmed by findings of Hunner's ulcer or glomerulation
* Symptoms of bladder pain and urinary urgency for at least 6 months
* Urinary frequency while awake at least 8 times a day while awake
* Nocturia at least twice a night
* Symptoms not significantly relieved by antimicrobial agents, anticholinergic drugs, or antispasmodics
* Have IC that in the judgment of the investigator has been stable in the previous 30 days
* Have IC-related pain despite current therapy, defined as a score of 4 or greater \[(on a scale from 0 (none) to 9 (severe)\] on average over the past month and confirmed by the voiding diary collected at Visit 2
* Have at least one voided volume ≥ 75 cc in a 24 hour period, confirmed by the voiding diary collected at Visit 2
* Patients of childbearing potential must agree to use an acceptable form of contraception (oral contraceptives, intrauterine device or double barrier methods) from Visit 1 through Visit 6
* Provide signed informed consent

Exclusion Criteria:

* Currently pregnant or breastfeeding
* Presence of ulcers on the pre-treatment cystoscopy
* Intravesical therapy or bladder hydrodistention within the previous 60 days
* Initiation of pentosan polysulfate sodium (Elmiron®) within the previous 16 weeks
* Use of fentanyl patches, morphine sulfate, methadone or B\&O supprettes within the previous 30 days.
* Previous augmentation cystoplasty, cystectomy or cystolysis, neurectomy (i.e., hypogastric nerve plexus ablation) or implanted peripheral nerve stimulator which has affected bladder function
* History of ureteral reflux. Patients with a history of childhood urinary tract infections, recurrent urinary tract infections as an adult (defined as \>3 culture documented episodes within the previous 12 months), or pyelonephritis at any time must have a cystourethogram to rule out ureteral reflux.
* Evidence of renal impairment (creatinine \> 2 times the upper limit of normal at Visit 1), hepatic impairment (AST or ALT \> 3 times the upper limit of normal at Visit 1), clinically significant cardiovascular, respiratory, or psychiatric diseases
* Any condition that in the judgment of the investigator would interfere with the patient's ability to provide informed consent, comply with study instructions, place the patient at increased risk, or which might confound the interpretation of the study results
* Treatment with a drug or medical device that has not received regulatory approval within the previous 30 days
* Investigators, study staff and their immediate families. Immediate family is defined as current spouse, parent, natural or legally adopted child (including a stepchild living in the investigator's household), grandparent, or grandchild.
* Previously completed or withdrawn from this study
* Urinary tract or prostatic infection within the past 3 months before study entry
* Active genital herpes or vaginitis
* Urethral diverticulum
* Uterine, cervical, vaginal, or urethral cancer within the past 5 years before study entry
* History of cyclophosphamide or chemical cystitis, urinary tuberculosis or radiation cystitis
* History of bladder tumors (benign or malignant)

Primary outcomes:
Secondary outcomes:
Other outcomes:
Locations:
city: Anchorage
country: United States
facility: Alaska Clinical Research Center
state: Alaska
city: Glendora
country: United States
facility: Citrus Valley Medical Research, Inc.
state: California
city: La Mesa
country: United States
facility: Center for Urological Research
state: California
city: Long Beach
country: United States
facility: Atlantic Urological Medical Group
state: California
city: Stanford
country: United States
facility: Stanford University Medical Center
state: California
city: Denver
country: United States
facility: Colorado Gynecology & Continence Center
state: Colorado
city: Denver
country: United States
facility: dba Genitourinary Surgical Consultants, PC
state: Colorado
city: Waterbury
country: United States
facility: The Connecticut Clinical Research Center-Urology Specialist
state: Connecticut
city: New Port Richey
country: United States
facility: Advanced Research Institute
state: Florida
city: Atlanta
country: United States
facility: Georgia Urology
state: Georgia
city: Fort Wayne
country: United States
facility: Northeast Indiana Research, LLC
state: Indiana
city: Indianapolis
country: United States
facility: Urology of Indiana, LLC
state: Indiana
city: Kansas City
country: United States
facility: KU Medical Center Research Institute
state: Kansas
city: Baltimore
country: United States
facility: University of Maryland
state: Maryland
city: Royal Oak
country: United States
facility: Michigan William Beaumont Hospital
state: Michigan
city: St. Louis
country: United States
facility: St. Louis Urological Surgeons
state: Missouri
city: Henderson
country: United States
facility: Michael Kaplan, MD, Ltd.
state: Nevada
city: Greensboro
country: United States
facility: The Urology Center
state: North Carolina
city: Tulsa
country: United States
facility: Urologic Specialists of Oklahoma
state: Oklahoma
city: Eugene
country: United States
facility: Oregon Urology Specialists
state: Oregon
city: Philadelphia
country: United States
facility: Pennsylvania Graduate Hospital
state: Pennsylvania
city: Nashville
country: United States
facility: Vanderbilt University Medical Center
state: Tennessee
city: San Antonio
country: United States
facility: Urology San Antonio
state: Texas
city: Seattle
country: United States
facility: Integrity Medical Research, LLC
state: Washington
Study officials:
affiliation: ICOS Corporation, (425) 415-5571, lfrumkin@icos.com
name: Lyn Frumkin, M.D., Ph.D.
role: STUDY_DIRECTOR
References: