Phase III Trial of Tamoxifen Alone vs. Tamoxifen Plus Radiation Therapy for Good Risk Duct Carcinoma In-Situ (DCIS) of the Female Breast
tamoxifen citrate
+ adjuvant therapy
+ tamoxifen citrate
Adenocarcinoma+9
+ Enfermedades de la Mama
+ Carcinoma
Estudio de Tratamiento
Resumen
Fecha de inicio: 1 de diciembre de 1999
Fecha en la que se inscribió al primer participante.OBJECTIVES: Compare the efficacy of whole breast radiotherapy vs observation with or without optional tamoxifen in decreasing or delaying the appearance of local failure (both invasive and in situ) and preventing the need for mastectomy in women with good-risk ductal carcinoma in situ (DCIS) of the breast. Compare distant disease-free survival of patients treated with these regimens. OUTLINE: This is a randomized, multicenter study. Patients are stratified according to age (under 50 vs 50 and over), final path margins (negative vs 3-9 mm vs at least 10 mm), mammographic size of primary (no greater than 1 cm vs greater than 1 cm to 2.5 cm), nuclei grade (low vs intermediate), and tamoxifen use (yes vs no). Patients are randomized to 1 of 2 treatment arms. Arm I: Patients undergo observation and may receive optional oral tamoxifen once daily (at the discretion of the physician) for 5 years. Arm II: Beginning within 12 weeks after final surgery, patients receive radiotherapy to the whole breast once daily, 5 days a week, for 3.5-5.5 weeks. Patients may receive optional tamoxifen as in arm I. Patients are followed every 3 months for 1 year, every 6 months for 2 years, and then annually thereafter. PROJECTED ACCRUAL: A total of 1,790 patients will be accrued for this study within 6 years.
Protocolo
Esta sección proporciona detalles del plan del estudio, incluyendo cómo está diseñado y qué se está evaluando.Se reclutarán 636 pacientes
Número total de participantes que el ensayo clínico espera reclutar.Estudio de Tratamiento
Elegibilidad
Los investigadores buscan pacientes que cumplan ciertos criterios, conocidos como criterios de elegibilidad: estado general de salud o tratamientos previos.Mujer
Sexo biológico de los participantes elegibles para inscribirse.De 26 a 120 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: Ductal carcinoma in situ (DCIS) of the breast detected by mammogram at the time of diagnosis Unicentric Lesions ≤ 2.5 cm Low nuclei grade (NG1) or intermediate nuclei grade (NG2) with necrosis in < one third of the involved ducts Inked margins ≥ 3 mm Clinically node negative Non-palpable No suspicious areas on post-operative mammogram taken within 12 weeks after final surgery No bloody nipple discharge No more than 12 weeks since prior final surgery (arm II only) Hormone receptor status: Not specified PATIENT CHARACTERISTICS: Age: 26 and over Sex: Female Menopausal status: Not specified Performance status: Not specified Life expectancy: Not specified Hematopoietic: Not specified Hepatic: Not specified Renal: Not specified Other: Not pregnant or nursing No active connective tissue disorders (e.g., lupus or scleroderma) No prior malignancy within the past 5 years except adequately treated basal cell or squamous cell skin cancer or carcinoma in situ of the cervix PRIOR CONCURRENT THERAPY: Biologic therapy: Not specified Chemotherapy: No prior chemotherapy Endocrine therapy: No other concurrent hormonal therapy (e.g., raloxifene, hormone replacement therapy, or birth control pills) Radiotherapy: No prior radiotherapy Surgery: See Disease Characteristics
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
0% de probabilidad de ser asignado al grupo placebo
Grupos de Tratamiento
Grupo I
Comparador ActivoGrupo 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 369 ubicaciones
Mobile Infirmary Medical Center
Mobile, United StatesAbrir Mobile Infirmary Medical Center en Google MapsFairbanks Cancer Treatment Center at Fairbanks Memorial Hospital
Fairbanks, United StatesArizona Oncology Services Foundation
Phoenix, United StatesSaint Joseph's Mercy Cancer Center
Hot Springs, United States