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

12. července 2016 aktualizováno: 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.

Přehled studie

Detailní popis

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.

Typ studie

Pozorovací

Zápis (Aktuální)

140

Kontakty a umístění

Tato část poskytuje kontaktní údaje pro ty, kteří studii provádějí, a informace o tom, kde se tato studie provádí.

Studijní místa

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

Kritéria účasti

Výzkumníci hledají lidi, kteří odpovídají určitému popisu, kterému se říká kritéria způsobilosti. Některé příklady těchto kritérií jsou celkový zdravotní stav osoby nebo předchozí léčba.

Kritéria způsobilosti

Věk způsobilý ke studiu

18 let a starší (Dospělý, Starší dospělý)

Přijímá zdravé dobrovolníky

Ne

Pohlaví způsobilá ke studiu

Ženský

Metoda odběru vzorků

Vzorek nepravděpodobnosti

Studijní populace

Postmenopausal women with breast cancer.

Popis

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)

Studijní plán

Tato část poskytuje podrobnosti o studijním plánu, včetně toho, jak je studie navržena a co studie měří.

Jak je studie koncipována?

Detaily designu

Kohorty a intervence

Skupina / kohorta
Intervence / Léčba
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.

Co je měření studie?

Primární výstupní opatření

Měření výsledku
Časové okno
Changes in percent breast density in response to 1 year of aromatase inhibitor therapy
Časové okno: Up to 12 months
Up to 12 months
Changes in dense area in response to 1 year of aromatase inhibitor therapy
Časové okno: Up to 12 months
Up to 12 months
Correlation of changes in percent breast density with changes in plasma hormone levels and drug levels
Časové okno: Up to 12 months
Up to 12 months
Correlation of changes in dense area with changes in plasma hormone levels and drug levels
Časové okno: 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
Časové okno: 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
Časové okno: 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
Časové okno: Up to 12 months
Up to 12 months

Spolupracovníci a vyšetřovatelé

Zde najdete lidi a organizace zapojené do této studie.

Termíny studijních záznamů

Tato data sledují průběh záznamů studie a předkládání souhrnných výsledků na ClinicalTrials.gov. Záznamy ze studií a hlášené výsledky jsou před zveřejněním na veřejné webové stránce přezkoumány Národní lékařskou knihovnou (NLM), aby se ujistily, že splňují specifické standardy kontroly kvality.

Hlavní termíny studia

Začátek studia

1. září 2007

Primární dokončení (Aktuální)

1. prosince 2009

Dokončení studie (Aktuální)

1. prosince 2009

Termíny zápisu do studia

První předloženo

14. srpna 2007

První předloženo, které splnilo kritéria kontroly kvality

14. srpna 2007

První zveřejněno (Odhad)

15. srpna 2007

Aktualizace studijních záznamů

Poslední zveřejněná aktualizace (Odhad)

13. července 2016

Odeslaná poslední aktualizace, která splnila kritéria kontroly kvality

12. července 2016

Naposledy ověřeno

1. července 2016

Více informací

Termíny související s touto studií

Další identifikační čísla studie

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

Tyto informace byly beze změn načteny přímo z webu clinicaltrials.gov. Máte-li jakékoli požadavky na změnu, odstranění nebo aktualizaci podrobností studie, kontaktujte prosím register@clinicaltrials.gov. Jakmile bude změna implementována na clinicaltrials.gov, bude automaticky aktualizována i na našem webu .

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