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Changes in Breast Density and Blood Hormone Levels in Postmenopausal Women Receiving Anastrozole or Exemestane for Breast Cancer

12 de julio de 2016 actualizado por: Alliance for Clinical Trials in Oncology

Changes in Breast Density and Plasma Hormone Levels After One Year of Aromatase Inhibitor Therapy

RATIONALE: Studying changes in breast density and blood hormone levels in women receiving anastrozole or exemestane for breast cancer may help doctors learn more about the long-term effects of treatment and may help the study of breast cancer in the future.

PURPOSE: This clinical trial is studying changes in breast density and blood hormone levels in postmenopausal women receiving anastrozole or exemestane for breast cancer.

Descripción general del estudio

Descripción detallada

OBJECTIVES:

  • To assess the changes in percent breast density (in response to 1 year of aromatase inhibitor therapy) from levels prior to the initiation of treatment.
  • To assess the changes in dense area (in response to 1 year of aromatase inhibitor therapy) from levels prior to the initiation of treatment.
  • To examine whether changes in percent breast density (in response to 1 year of aromatase inhibitor therapy) from pre-treatment levels correlate with changes in plasma hormone levels (estrone, estrone-sulfate, estradiol, and SHBG) and drug levels (anastrozole or exemestane) over the same time period.
  • To examine whether changes in dense area (in response to 1 year of aromatase inhibitor therapy) from pre-treatment mammogram correlate with changes in plasma hormone levels (estrone, estrone-sulfate, estradiol, and SHBG) and drug levels (anastrozole or exemestane) over the same time period.
  • To assess whether women with high pre-treatment percent density (upper tertile) experience greater decreases in percent breast density after 1 year of aromatase inhibitor therapy than women with low pre-treatment percent density (lower tertile).
  • To assess whether women with high pre-treatment dense area (upper tertile) experience greater decreases in dense area after 1 year of aromatase inhibitor therapy than women with low pre-treatment dense area (lower tertile).
  • To examine the associations of haplotype-tagged single nucleotide polymorphisms in genes in the aromatase pathway identified through the Mayo Clinic and Indiana University Pharmacogenomics Research Network Projects, with changes in percent and area density, plasma hormone levels, and drug levels after 1 year of aromatase inhibitor therapy.

OUTLINE: This is a multicenter study.

Patients undergo blood sample collection at baseline and at 1 year after initiation of aromatase inhibitor therapy (anastrozole or exemestane). Samples are analyzed for estrogen and testosterone levels and additional hormone levels and growth factors that have been previously linked with breast density and that could be altered by aromatase inhibitor use (i.e., sex hormone-binding globulin [SHBG], DHEA, DHEA sulfate, progesterone, prolactin, insulin-like growth factor-1 [IGF-1], and insulin-like growth factor binding protein 3 [IGF BP3]). Samples are also analyzed for anastrozole and exemestane levels by HPLC. Pharmacogenetic studies are also performed. Haplotype-tagged single nucleotide polymorphisms in genes in the aromatase pathway are examined.

Patients also undergo mammogram at baseline (≤ 6 months prior to study registration) and at 1 year after initiation of aromatase inhibitor therapy.

Tipo de estudio

De observación

Inscripción (Actual)

140

Contactos y Ubicaciones

Esta sección proporciona los datos de contacto de quienes realizan el estudio e información sobre dónde se lleva a cabo este estudio.

Ubicaciones de estudio

    • Georgia
      • Augusta, Georgia, Estados Unidos, 30912
        • MBCCOP - Medical College of Georgia Cancer Center
    • Illinois
      • Aurora, Illinois, Estados Unidos, 60504
        • Rush-Copley Cancer Care Center
      • Bloomington, Illinois, Estados Unidos, 61701
        • St. Joseph Medical Center
      • Canton, Illinois, Estados Unidos, 61520
        • Graham Hospital
      • Carthage, Illinois, Estados Unidos, 62321
        • Memorial Hospital
      • Effingham, Illinois, Estados Unidos, 62401
        • St. Anthony's Memorial Hospital
      • Eureka, Illinois, Estados Unidos, 61530
        • Eureka Community Hospital
      • Galesburg, Illinois, Estados Unidos, 61401
        • Galesburg Cottage Hospital
      • Galesburg, Illinois, Estados Unidos, 61401
        • Galesburg Clinic, PC
      • Havana, Illinois, Estados Unidos, 62644
        • Mason District Hospital
      • Hopedale, Illinois, Estados Unidos, 61747
        • Hopedale Medical Complex
      • Joliet, Illinois, Estados Unidos, 60435
        • Joliet Oncology-Hematology Associates, Limited - West
      • Macomb, Illinois, Estados Unidos, 61455
        • Mcdonough District Hospital
      • Moline, Illinois, Estados Unidos, 61265
      • Moline, Illinois, Estados Unidos, 61265
        • Trinity Cancer Center at Trinity Medical Center - 7th Street Campus
      • Normal, Illinois, Estados Unidos, 61761
        • Bromenn Regional Medical Center
      • Normal, Illinois, Estados Unidos, 61761
        • Community Cancer Center
      • Ottawa, Illinois, Estados Unidos, 61350
        • Community Hospital of Ottawa
      • Ottawa, Illinois, Estados Unidos, 61350
        • Oncology Hematology Associates of Central Illinois, PC - Ottawa
      • Pekin, Illinois, Estados Unidos, 61554
        • Cancer Treatment Center at Pekin Hospital
      • Peoria, Illinois, Estados Unidos, 61636
        • Methodist Medical Center of Illinois
      • Peoria, Illinois, Estados Unidos, 61614
        • Proctor Hospital
      • Peoria, Illinois, Estados Unidos, 61637
        • OSF St. Francis Medical Center
      • Peoria, Illinois, Estados Unidos, 61615
        • CCOP - Illinois Oncology Research Association
      • Peoria, Illinois, Estados Unidos, 61615
        • Oncology Hematology Associates of Central Illinois, PC - Peoria
      • Peru, Illinois, Estados Unidos, 61354
        • Illinois Valley Community Hospital
      • Princeton, Illinois, Estados Unidos, 61356
        • Perry Memorial Hospital
      • Spring Valley, Illinois, Estados Unidos, 61362
        • St. Margaret's Hospital
      • Urbana, Illinois, Estados Unidos, 61801
        • Carle Cancer Center at Carle Foundation Hospital
      • Urbana, Illinois, Estados Unidos, 61801
        • CCOP - Carle Cancer Center
    • Indiana
      • Beech Grove, Indiana, Estados Unidos, 46107
        • St. Francis Hospital and Health Centers - Beech Grove Campus
      • Michigan City, Indiana, Estados Unidos, 46360
        • Saint Anthony Memorial Health Centers
      • Richmond, Indiana, Estados Unidos, 47374
        • Reid Hospital & Health Care Services
    • Iowa
      • Ames, Iowa, Estados Unidos, 50010
        • McFarland Clinic, PC
      • Bettendorf, Iowa, Estados Unidos, 52722
      • Des Moines, Iowa, Estados Unidos, 50309
        • CCOP - Iowa Oncology Research Association
      • Des Moines, Iowa, Estados Unidos, 50309
        • John Stoddard Cancer Center at Iowa Methodist Medical Center
      • Des Moines, Iowa, Estados Unidos, 50309
        • Medical Oncology and Hematology Associates at John Stoddard Cancer Center
      • Des Moines, Iowa, Estados Unidos, 50314
        • Medical Oncology and Hematology Associates at Mercy Cancer Center
      • Des Moines, Iowa, Estados Unidos, 50314
        • Mercy Cancer Center at Mercy Medical Center - Des Moines
      • Des Moines, Iowa, Estados Unidos, 50316
        • John Stoddard Cancer Center at Iowa Lutheran Hospital
      • Des Moines, Iowa, Estados Unidos, 50307
        • Mercy Capitol Hospital
      • Mason City, Iowa, Estados Unidos, 50401
        • Mercy Cancer Center at Mercy Medical Center - North Iowa
      • Sioux City, Iowa, Estados Unidos, 51101
        • Siouxland Hematology-Oncology Associates, LLP
      • Sioux City, Iowa, Estados Unidos, 51104
        • St. Luke's Regional Medical Center
      • Sioux City, Iowa, Estados Unidos, 51104
        • Mercy Medical Center - Sioux City
    • Kansas
      • Chanute, Kansas, Estados Unidos, 66720
        • Cancer Center of Kansas, PA - Chanute
      • Dodge City, Kansas, Estados Unidos, 67801
        • Cancer Center of Kansas, PA - Dodge City
      • El Dorado, Kansas, Estados Unidos, 67042
        • Cancer Center of Kansas, PA - El Dorado
      • Kingman, Kansas, Estados Unidos, 67068
        • Cancer Center of Kansas, PA - Kingman
      • Liberal, Kansas, Estados Unidos, 67901
        • Southwest Medical Center
      • Newton, Kansas, Estados Unidos, 67114
        • Cancer Center of Kansas, PA - Newton
      • Parsons, Kansas, Estados Unidos, 67357
        • Cancer Center of Kansas, PA - Parsons
      • Pratt, Kansas, Estados Unidos, 67124
        • Cancer Center of Kansas, PA - Pratt
      • Salina, Kansas, Estados Unidos, 67042
        • Cancer Center of Kansas, PA - Salina
      • Wellington, Kansas, Estados Unidos, 67152
        • Cancer Center of Kansas, PA - Wellington
      • Wichita, Kansas, Estados Unidos, 67214
        • Wesley Medical Center
      • Wichita, Kansas, Estados Unidos, 67208
        • Cancer Center of Kansas, PA - Medical Arts Tower
      • Wichita, Kansas, Estados Unidos, 67214
        • Cancer Center of Kansas, PA - Wichita
      • Wichita, Kansas, Estados Unidos, 67214
        • CCOP - Wichita
      • Wichita, Kansas, Estados Unidos, 67214
        • Via Christi Cancer Center at Via Christi Regional Medical Center
      • Wichita, Kansas, Estados Unidos, 67208
        • Associates in Womens Health, PA - North Review
      • Winfield, Kansas, Estados Unidos, 67156
        • Cancer Center of Kansas, PA - Winfield
    • Michigan
      • Adrian, Michigan, Estados Unidos, 49221
        • Hickman Cancer Center at Bixby Medical Center
      • Lambertville, Michigan, Estados Unidos, 48144
        • Haematology-Oncology Associates of Ohio and Michigan, PC
      • Monroe, Michigan, Estados Unidos, 48162
        • Community Cancer Center of Monroe
      • Monroe, Michigan, Estados Unidos, 48162
        • Mercy Memorial Hospital - Monroe
    • Minnesota
      • Bemidji, Minnesota, Estados Unidos, 56601
        • MeritCare Bemidji
      • Burnsville, Minnesota, Estados Unidos, 55337
        • Fairview Ridges Hospital
      • Coon Rapids, Minnesota, Estados Unidos, 55433
        • Mercy and Unity Cancer Center at Mercy Hospital
      • Duluth, Minnesota, Estados Unidos, 55805
        • CCOP - Duluth
      • Duluth, Minnesota, Estados Unidos, 55805-1983
        • Duluth Clinic Cancer Center - Duluth
      • Duluth, Minnesota, Estados Unidos, 55805
        • Miller - Dwan Medical Center
      • Edina, Minnesota, Estados Unidos, 55435
        • Fairview Southdale Hospital
      • Fridley, Minnesota, Estados Unidos, 55432
        • Mercy and Unity Cancer Center at Unity Hospital
      • Hutchinson, Minnesota, Estados Unidos, 55350
        • Hutchinson Area Health Care
      • Lichfield, Minnesota, Estados Unidos, 55355
        • Meeker County Memorial Hospital
      • Mankato, Minnesota, Estados Unidos, 56002
        • Immanuel St. Joseph's
      • Maplewood, Minnesota, Estados Unidos, 55109
        • Minnesota Oncology Hematology, PA - Maplewood
      • Maplewood, Minnesota, Estados Unidos, 55109
        • HealthEast Cancer Care at St. John's Hospital
      • Minneapolis, Minnesota, Estados Unidos, 55407
        • Virginia Piper Cancer Institute at Abbott - Northwestern Hospital
      • Minneapolis, Minnesota, Estados Unidos, 55415
        • Hennepin County Medical Center - Minneapolis
      • Robbinsdale, Minnesota, Estados Unidos, 55422-2900
        • Hubert H. Humphrey Cancer Center at North Memorial Outpatient Center
      • Saint Louis Park, Minnesota, Estados Unidos, 55416
        • CCOP - Metro-Minnesota
      • Saint Louis Park, Minnesota, Estados Unidos, 55416
        • Park Nicollet Cancer Center
      • Saint Paul, Minnesota, Estados Unidos, 55102
        • United Hospital
      • Saint Paul, Minnesota, Estados Unidos, 55102
        • HealthEast Cancer Care at St. Joseph's Hospital
      • Shakopee, Minnesota, Estados Unidos, 55379
        • St. Francis Cancer Center at St. Francis Medical Center
      • St. Paul, Minnesota, Estados Unidos, 55101
        • Regions Hospital Cancer Care Center
      • Waconia, Minnesota, Estados Unidos, 55387
        • Ridgeview Medical Center
      • Woodbury, Minnesota, Estados Unidos, 55125
        • Minnesota Oncology Hematology, PA - Woodbury
      • Woodbury, Minnesota, Estados Unidos, 55125
        • HealthEast Cancer Care at Woodwinds Health Campus
    • Missouri
      • Saint Louis, Missouri, Estados Unidos, 63131
        • Missouri Baptist Cancer Center
      • Saint Louis, Missouri, Estados Unidos, 63141
        • Arch Medical Services, Incorporated at Center for Cancer Care and Research
    • Montana
      • Billings, Montana, Estados Unidos, 59101
        • CCOP - Montana Cancer Consortium
      • Billings, Montana, Estados Unidos, 59101
        • Hematology-Oncology Centers of the Northern Rockies - Billings
      • Billings, Montana, Estados Unidos, 59101
        • Northern Rockies Radiation Oncology Center
      • Billings, Montana, Estados Unidos, 59101
        • St. Vincent Healthcare Cancer Care Services
      • Billings, Montana, Estados Unidos, 59107-7000
        • Billings Clinic - Downtown
      • Bozeman, Montana, Estados Unidos, 59715
        • Bozeman Deaconess Cancer Center
      • Butte, Montana, Estados Unidos, 59701
        • St. James Healthcare Cancer Care
      • Great Falls, Montana, Estados Unidos, 59405
        • Great Falls Clinic - Main Facility
      • Great Falls, Montana, Estados Unidos, 59405
      • Helena, Montana, Estados Unidos, 59601
        • St. Peter's Hospital
      • Kalispell, Montana, Estados Unidos, 59901
        • Kalispell Regional Medical Center
      • Kalispell, Montana, Estados Unidos, 59901
        • Glacier Oncology, PLLC
      • Kalispell, Montana, Estados Unidos, 59901
        • Kalispell Medical Oncology at KRMC
      • Missoula, Montana, Estados Unidos, 59801
        • Community Medical Center
      • Missoula, Montana, Estados Unidos, 59804
        • Guardian Oncology and Center for Wellness
      • Missoula, Montana, Estados Unidos, 59807-7877
        • Montana Cancer Specialists at Montana Cancer Center
      • Missoula, Montana, Estados Unidos, 59807
        • Montana Cancer Center at St. Patrick Hospital and Health Sciences Center
    • North Carolina
      • Rutherfordton, North Carolina, Estados Unidos, 28139
        • Rutherford Hospital
    • North Dakota
      • Bismarck, North Dakota, Estados Unidos, 58501
        • Bismarck Cancer Center
      • Bismarck, North Dakota, Estados Unidos, 58501
        • Medcenter One Hospital Cancer Care Center
      • Bismarck, North Dakota, Estados Unidos, 58501
        • Mid Dakota Clinic, PC
      • Bismarck, North Dakota, Estados Unidos, 58502
        • St. Alexius Medical Center Cancer Center
      • Fargo, North Dakota, Estados Unidos, 58122
        • CCOP - MeritCare Hospital
      • Fargo, North Dakota, Estados Unidos, 58122
        • MeritCare Broadway
    • Ohio
      • Bellefontaine, Ohio, Estados Unidos, 43311
        • Mary Rutan Hospital
      • Bowling Green, Ohio, Estados Unidos, 43402
        • Wood County Oncology Center
      • Chillicothe, Ohio, Estados Unidos, 45601
        • Adena Regional Medical Center
      • Columbus, Ohio, Estados Unidos, 43214-3998
        • Riverside Methodist Hospital Cancer Care
      • Columbus, Ohio, Estados Unidos, 43222
        • Mount Carmel Health - West Hospital
      • Columbus, Ohio, Estados Unidos, 43215
        • CCOP - Columbus
      • Columbus, Ohio, Estados Unidos, 43215
        • Grant Medical Center Cancer Care
      • Columbus, Ohio, Estados Unidos, 43228
        • Doctors Hospital at Ohio Health
      • Dayton, Ohio, Estados Unidos, 45405
        • Grandview Hospital
      • Dayton, Ohio, Estados Unidos, 45406
        • Good Samaritan Hospital
      • Dayton, Ohio, Estados Unidos, 45415
        • Samaritan North Cancer Care Center
      • Dayton, Ohio, Estados Unidos, 45429
        • CCOP - Dayton
      • Delaware, Ohio, Estados Unidos, 43015
        • Grady Memorial Hospital
      • Elyria, Ohio, Estados Unidos, 44035
        • Hematology Oncology Center
      • Findlay, Ohio, Estados Unidos, 45840
        • Blanchard Valley Medical Associates
      • Franklin, Ohio, Estados Unidos, 45005-1066
        • Middletown Regional Hospital
      • Kettering, Ohio, Estados Unidos, 45429
        • Charles F. Kettering Memorial Hospital
      • Lancaster, Ohio, Estados Unidos, 43130
        • Fairfield Medical Center
      • Lima, Ohio, Estados Unidos, 45804
        • Lima Memorial Hospital
      • Marietta, Ohio, Estados Unidos, 45750
        • Strecker Cancer Center at Marietta Memorial Hospital
      • Maumee, Ohio, Estados Unidos, 43537
        • Northwest Ohio Oncology Center
      • Maumee, Ohio, Estados Unidos, 43537
        • St. Luke's Hospital
      • Newark, Ohio, Estados Unidos, 43055
        • Licking Memorial Cancer Care Program at Licking Memorial Hospital
      • Oregon, Ohio, Estados Unidos, 43616
        • St. Charles Mercy Hospital
      • Oregon, Ohio, Estados Unidos, 43616
        • Toledo Clinic - Oregon
      • Sandusky, Ohio, Estados Unidos, 44870
        • Firelands Regional Medical Center
      • Sandusky, Ohio, Estados Unidos, 44870
        • North Coast Cancer Care, Incorporated
      • Springfield, Ohio, Estados Unidos, 45505
        • Community Hospital of Springfield and Clark County
      • Springfield, Ohio, Estados Unidos, 45504
        • Mercy Medical Center
      • Sylvania, Ohio, Estados Unidos, 43560
        • Flower Hospital Cancer Center
      • Tiffin, Ohio, Estados Unidos, 44883
        • Mercy Hospital of Tiffin
      • Toledo, Ohio, Estados Unidos, 43608
        • St. Vincent Mercy Medical Center
      • Toledo, Ohio, Estados Unidos, 43606
        • Toledo Hospital
      • Toledo, Ohio, Estados Unidos, 43614
        • Medical University of Ohio Cancer Center
      • Toledo, Ohio, Estados Unidos, 43617
        • CCOP - Toledo Community Hospital
      • Toledo, Ohio, Estados Unidos, 43623
        • Toledo Clinic, Incorporated - Main Clinic
      • Troy, Ohio, Estados Unidos, 45373-1300
        • UVMC Cancer Care Center at Upper Valley Medical Center
      • Wauseon, Ohio, Estados Unidos, 43567
        • Fulton County Health Center
      • Westerville, Ohio, Estados Unidos, 43081
        • Mount Carmel St. Ann's Cancer Center
      • Wilmington, Ohio, Estados Unidos, 45177
        • Clinton Memorial Hospital
      • Xenia, Ohio, Estados Unidos, 45385
        • Ruth G. McMillan Cancer Center at Greene Memorial Hospital
      • Zanesville, Ohio, Estados Unidos, 43701
        • Genesis - Good Samaritan Hospital
    • Oklahoma
      • Tulsa, Oklahoma, Estados Unidos, 74136
        • Natalie Warren Bryant Cancer Center at St. Francis Hospital
    • Pennsylvania
      • Danville, Pennsylvania, Estados Unidos, 17822-0001
        • Geisinger Cancer Institute at Geisinger Health
      • Hazleton, Pennsylvania, Estados Unidos, 18201
        • Geisinger Hazleton Cancer Center
      • State College, Pennsylvania, Estados Unidos, 16801
        • Geisinger Medical Group - Scenery Park
      • Wilkes-Barre, Pennsylvania, Estados Unidos, 18711
        • Frank M. and Dorothea Henry Cancer Center at Geisinger Wyoming Valley Medical Center
      • Wilkes-Barre, Pennsylvania, Estados Unidos, 18765
        • Mercy Hospital at Wilkes-Barre
    • South Carolina
      • Anderson, South Carolina, Estados Unidos, 29621
        • AnMed Cancer Center
      • Spartanburg, South Carolina, Estados Unidos, 29303
        • CCOP - Upstate Carolina
      • Spartanburg, South Carolina, Estados Unidos, 29303
        • Gibbs Regional Cancer Center at Spartanburg Regional Medical Center
    • South Dakota
      • Rapid City, South Dakota, Estados Unidos, 57701
        • Rapid City Regional Hospital
      • Sioux Falls, South Dakota, Estados Unidos, 57105
        • Avera Cancer Institute
      • Sioux Falls, South Dakota, Estados Unidos, 57105
        • Medical X-Ray Center, PC
      • Sioux Falls, South Dakota, Estados Unidos, 57117-5039
        • Sanford Cancer Center at Sanford USD Medical Center
    • Virginia
      • Fredericksburg, Virginia, Estados Unidos, 22401
        • Fredericksburg Oncology, Incorporated
    • Washington
      • Kirkland, Washington, Estados Unidos, 98033
        • Cascade Cancer Center at Evergreen Hospital Medical Center
      • Port Angeles, Washington, Estados Unidos, 98362
        • Olympic Medical Center
      • Renton, Washington, Estados Unidos, 98055
        • Southlake Clinic
      • Seattle, Washington, Estados Unidos, 98101
        • Virginia Mason Medical Center
      • Seattle, Washington, Estados Unidos, 98101
        • CCOP - Virginia Mason Research Center
    • Wyoming
      • Sheridan, Wyoming, Estados Unidos, 82801
        • Welch Cancer Center at Sheridan Memorial Hospital

Criterios de participación

Los investigadores buscan personas que se ajusten a una determinada descripción, denominada criterio de elegibilidad. Algunos ejemplos de estos criterios son el estado de salud general de una persona o tratamientos previos.

Criterio de elegibilidad

Edades elegibles para estudiar

18 años y mayores (Adulto, Adulto Mayor)

Acepta Voluntarios Saludables

No

Géneros elegibles para el estudio

Femenino

Método de muestreo

Muestra no probabilística

Población de estudio

Postmenopausal women with breast cancer.

Descripción

DISEASE CHARACTERISTICS:

Inclusion criteria:

  • Must have histologically confirmed invasive breast cancer, as defined by the following TNM staging criteria:

    • pT1, pT2, or pT3
    • pNx, pN0, pN1, pN2, or pN3*

      • Patients with positive sentinel node biopsies (pN1) must have subsequent axillary dissection to be eligible
      • Patients with negative sentinel node biopsies (pN0) do not require axillary surgery for study eligibility
    • M0, according to the following radiologic studies:

      • Bone scan (required only if alkaline phosphatase is > 2 x institutional upper limit of normal [ULN] and/or there are symptoms of metastatic disease)

        • A confirmatory x-ray or other imaging study, such as CT scan or MRI, is required if the results from the bone scan are questionable
      • Abdominal ultrasound or CT scan of the abdomen (required only if AST/ALT or alkaline phosphatase is > 2 x ULN unless the elevation is in the bone fraction)
      • Chest x-ray NOTE: *Only when the sole basis for this classification is the presence of 10 or more involved axillary nodes
  • Completely resected disease

    • Surgical margins must be clear of invasive carcinoma and ductal carcinoma in situ or lobular carcinoma in situ
  • Must have one intact, noncancerous breast with no history of previous breast surgery in that breast (other than a breast biopsy)

    • Mammogram of the intact, noncancerous breast required ≤ 6 months prior to study registration (both a craniocaudal [top down] and mediolateral oblique view [side view] must be available)
  • Must be registered on this study ≥ 3 weeks but ≤ 3 months after completion of chemotherapy OR primary surgery*

    • Adjuvant chemotherapy and radiation therapy as prescribed by the local institution is allowed provided patient is registered on this study and hormonal treatment is begun as soon as patient has sufficiently recovered from chemotherapy NOTE: *Primary surgery is defined as the last surgical procedure to remove invasive or in situ disease
  • Planning to receive anastrozole or exemestane for ≥ 1 year for treatment of breast cancer
  • Hormone receptor status:

    • Estrogen receptor- and/or progesterone receptor-positive (defined as a tumor receptor content of > 10 fmol/mg protein OR receptor-positive by immunohistochemistry [ERICA or PgRICA])

PATIENT CHARACTERISTICS:

Inclusion criteria:

  • Female
  • Postmenopausal, defined by one of the following:

    • Age > 60 years
    • Age 45-59 years with spontaneous cessation of menses > 12 months prior to chemotherapy (if no chemotherapy was given, then prior to study registration)
    • Age 45-59 years with cessation of menses for a duration of < 12 months or secondary to hysterectomy AND an FSH level in the postmenopausal range (or ≥ 34.4 IU/L, if institutional range is not available) prior to chemotherapy (if no chemotherapy was given, then prior to study registration)
    • Age 45-59 years with an FSH level in the postmenopausal range according to institutional laboratory standards (or > 34.4 IU/L, if the institutional range is not available) prior to chemotherapy (if no chemotherapy was given, then prior to study registration)
    • Bilateral oophorectomy
  • ECOG performance status 0, 1, or 2
  • Life expectancy ≥ 5 years

Exclusion criteria:

  • History of other (non-breast) malignancies, except adequately treated nonmelanoma skin cancer, curatively treated in situ cancer of the cervix, or other curatively treated solid tumors with no evidence of disease for > 5 years
  • Any co-existing medical or psychiatric condition that is likely to interfere with study procedures and/or results

PRIOR CONCURRENT THERAPY:

Inclusion criteria:

  • See Disease Characteristics

Exclusion criteria:

  • Hormone replacement therapy, oral contraceptives, tamoxifen, raloxifene, other selective estrogen-receptor modulators, or gonadotropin releasing-hormone analogues ≤ 6 months prior to the pre-registration mammogram
  • Prior treatment with an aromatase inhibitor (e.g., anastrozole, exemestane, letrozole)
  • Planned surgery (other than core needle biopsy) to intact non-cancerous breast (e.g., preventive/prophylactic mastectomy)

Plan de estudios

Esta sección proporciona detalles del plan de estudio, incluido cómo está diseñado el estudio y qué mide el estudio.

¿Cómo está diseñado el estudio?

Detalles de diseño

Cohortes e Intervenciones

Grupo / Cohorte
Intervención / Tratamiento
Group 1

Patients undergo blood sample collection at baseline and at 1 year after initiation of aromatase inhibitor therapy (anastrozole or exemestane). Samples are analyzed for estrogen and testosterone levels and additional hormone levels and growth factors that have been previously linked with breast density and that could be altered by aromatase inhibitor use (i.e., sex hormone-binding globulin [SHBG], DHEA, DHEA sulfate, progesterone, prolactin, insulin-like growth factor-1 [IGF-1], and insulin-like growth factor binding protein 3 [IGF BP3]). Samples are also analyzed for anastrozole and exemestane levels by HPLC. Pharmacogenetic studies are also performed. Haplotype-tagged single nucleotide polymorphisms in genes in the aromatase pathway are examined.

Patients also undergo mammogram at baseline (≤ 6 months prior to study registration) and at 1 year after initiation of aromatase inhibitor therapy.

¿Qué mide el estudio?

Medidas de resultado primarias

Medida de resultado
Periodo de tiempo
Changes in percent breast density in response to 1 year of aromatase inhibitor therapy
Periodo de tiempo: Up to 12 months
Up to 12 months
Changes in dense area in response to 1 year of aromatase inhibitor therapy
Periodo de tiempo: Up to 12 months
Up to 12 months
Correlation of changes in percent breast density with changes in plasma hormone levels and drug levels
Periodo de tiempo: Up to 12 months
Up to 12 months
Correlation of changes in dense area with changes in plasma hormone levels and drug levels
Periodo de tiempo: Up to 12 months
Up to 12 months
Comparison of percent breast density in women with high pre-treatment percent density vs women with low pre-treatment percent density
Periodo de tiempo: Up to 12 months
Up to 12 months
Comparison of dense area in women with high pre-treatment dense area vs women with low pre-treatment dense area
Periodo de tiempo: Up to 12 months
Up to 12 months
Associations of haplotype-tagged single nucleotide polymorphisms in genes in the aromatase pathway with changes in percent and area density, plasma hormone levels, and drug levels after 1 year of aromatase inhibitor therapy
Periodo de tiempo: Up to 12 months
Up to 12 months

Colaboradores e Investigadores

Aquí es donde encontrará personas y organizaciones involucradas en este estudio.

Fechas de registro del estudio

Estas fechas rastrean el progreso del registro del estudio y los envíos de resultados resumidos a ClinicalTrials.gov. Los registros del estudio y los resultados informados son revisados ​​por la Biblioteca Nacional de Medicina (NLM) para asegurarse de que cumplan con los estándares de control de calidad específicos antes de publicarlos en el sitio web público.

Fechas importantes del estudio

Inicio del estudio

1 de septiembre de 2007

Finalización primaria (Actual)

1 de diciembre de 2009

Finalización del estudio (Actual)

1 de diciembre de 2009

Fechas de registro del estudio

Enviado por primera vez

14 de agosto de 2007

Primero enviado que cumplió con los criterios de control de calidad

14 de agosto de 2007

Publicado por primera vez (Estimar)

15 de agosto de 2007

Actualizaciones de registros de estudio

Última actualización publicada (Estimar)

13 de julio de 2016

Última actualización enviada que cumplió con los criterios de control de calidad

12 de julio de 2016

Última verificación

1 de julio de 2016

Más información

Términos relacionados con este estudio

Otros números de identificación del estudio

  • NCCTG-N063I
  • NCI-2012-02719 (Identificador de registro: CTRP (Clinical Trials Reporting System))
  • CDR0000560200 (Identificador de registro: PDQ (Physician Data Query))

Esta información se obtuvo directamente del sitio web clinicaltrials.gov sin cambios. Si tiene alguna solicitud para cambiar, eliminar o actualizar los detalles de su estudio, comuníquese con register@clinicaltrials.gov. Tan pronto como se implemente un cambio en clinicaltrials.gov, también se actualizará automáticamente en nuestro sitio web. .

Ensayos clínicos sobre Cáncer de mama

Ensayos clínicos sobre análisis de polimorfismos

3
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