Celecoxib Polyp Prevention Trial in Participants With Resected Stage I Colon Cancer
Celecoxib
+ placebo
Enfermedades del colon+8
+ Neoplasias del Colon
+ Enfermedades del Sistema Digestivo
Estudio de Prevención
Resumen
Fecha de inicio: 1 de julio de 2004
Fecha en la que se inscribió al primer participante.OBJECTIVES: Primary * Compare celecoxib vs placebo, in terms of decreasing the incidence of adenomatous polyps of the colon and rectum, in patients with resected stage I adenocarcinoma of the colon. Secondary * Compare disease-free survival of patients treated with these regimens. * Compare the effect of these regimens on self-reported symptoms and health-related quality of life of these patients. * Compare the quality of life of patients treated with these regimens. * Compare the benefits of celecoxib in patients with primary tumors or polyps that express cyclo-oxygenase-2 (COX-2) with those that do not express COX-2. * Compare the expression of signaling targets such as serine/threonine AKT, extracellular signal-regulated kinase 2 (ERK2), and endoplasmic reticulum Ca+2- ATPases in the index tumor and polyps. * Determine the toxicity and safety of celecoxib in these patients. OUTLINE: This is a randomized, double-blind, placebo-controlled, multicenter study. Patients are stratified according to gender, tumor stage (T1 vs T2), age (≤ 49 vs 50 to 59 vs ≥ 60 years), and current aspirin use (yes vs no). Patients are randomized to 1 of 2 treatment arms. * Arm I: Patients receive oral celecoxib twice daily for 3 years. * Arm II: Patients receive oral placebo twice daily for 3 years. In both arms, treatment continues in the absence of unacceptable toxicity or the diagnosis of invasive colon cancer, carcinoma in situ of the colon or rectum, or a non-colon primary cancer. Quality of life is assessed at baseline and then at 6, 12, 24, 36, and 42 months. Patients are followed at 6 months and at 2 years. PROJECTED ACCRUAL: A total of 1,200 patients (600 per treatment arm) will be accrued for this study within 2.5 years.
Protocolo
Esta sección proporciona detalles del plan del estudio, incluyendo cómo está diseñado y qué se está evaluando.Se reclutarán 18 pacientes
Número total de participantes que el ensayo clínico espera reclutar.Estudio de Prevención
Elegibilidad
Los investigadores buscan pacientes que cumplan ciertos criterios, conocidos como criterios de elegibilidad: estado general de salud o tratamientos previos.Cualquier sexo
Sexo biológico de los participantes elegibles para inscribirse.A partir de 18 años
Rango de edades de los participantes que pueden unirse al estudio.Voluntarios sanos no permitidos
Indica si personas sanas, sin la condición que se estudia, pueden participar.Condiciones
Patología
Criterios
DISEASE CHARACTERISTICS: * Histologically confirmed adenocarcinoma of the colon * Stage I disease * Distal border of tumor ≥ 12 cm from the anal verge * Tumor completely resected within the past 90 days * Must have undergone a preoperative or postoperative colonoscopy to the cecum (or small bowel anastomosis) within the past 90 days * All observed polyps must have been removed * Patients with a history suggestive of hereditary non-polyposis colorectal cancer (HNPCC) must have a normal microsatellite instability status by immunohistochemistry or polymerase chain reaction * Patients with family history of colon cancer who have not been diagnosed with HNPCC are eligible * No prior familial adenomatous polyposis * No prior invasive cancer or carcinoma in situ of the colon or rectum * No clinical or radiologic evidence of metastatic disease PATIENT CHARACTERISTICS: Age * 18 and over Performance status * Zubrod 0-1 Life expectancy * At least 10 years Hematopoietic * Complete blood count normal * Platelet count normal Hepatic * Aspartate aminotransferase (AST) normal * Bilirubin normal * Alkaline phosphatase normal Renal * Creatinine normal Cardiovascular * No active ischemic heart disease * No New York Heart Association class III or IV heart disease * No myocardial infarction within the past 6 months * No symptomatic arrhythmia * No symptomatic peripheral vascular disease or carotid disease that would preclude study participation Pulmonary * No aspirin-sensitive asthma Gastrointestinal * No history of inflammatory bowel disease * No history of upper gastrointestinal bleeding * No history of duodenal or gastric ulcer Other * No known hypersensitivity to any COX-2 inhibitor, NSAIDs, aspirin, or sulfonamides * No non-colorectal malignancy within the past 5 years except carcinoma in situ of the cervix, melanoma in situ, or basal cell or squamous cell skin cancer * No other disease that would preclude study participation * No psychiatric disorders, including history of clinical depression or addictive disorders, that would preclude giving informed consent or long-term compliance * No rheumatologic or skeletal disorders requiring chronic NSAIDs or steroid therapy * Not pregnant or nursing * Negative pregnancy test * Fertile patients must use effective contraception PRIOR CONCURRENT THERAPY: Biologic therapy * Not specified Chemotherapy * Not specified Endocrine therapy * Not specified Radiotherapy * Not specified Surgery * See Disease Characteristics Other * No other concurrent investigational agents for colon cancer * No concurrent chronic use of other cyclo-oxygenase-2 (COX-2) inhibitors, non-steroidal anti-inflammatory drugs (NSAIDs), or salicylates (e.g., aspirin) * Chronic use is defined as use for more than an average of 3 days per month * Concurrent NSAIDs allowed for up to 10 consecutive days for temporary relief due to inflammatory syndromes, injury, or postoperative pain * Cardioprotective doses of aspirin (≤ 81 mg/day or 325 mg every other day) allowed * No concurrent fluconazole or lithium
Plan de Estudio
Conoce todos los tratamientos administrados en este estudio, su descripción detallada y en qué consisten.2 grupos de intervención están designados en este estudio
50% de probabilidad de ser asignado al grupo placebo
Grupos de Tratamiento
Grupo I
PlaceboGrupo II
ExperimentalObjetivos del Estudio
Objetivos Primarios
Objetivos Secundarios
Centros del Estudio
Estos son los hospitales, clínicas o centros de investigación donde se lleva a cabo el estudio. Puedes encontrar la ubicación más cercana a ti y su estado de reclutamiento.Este estudio tiene una ubicación