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

12. juli 2016 oppdatert av: 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.

Studieoversikt

Detaljert beskrivelse

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.

Studietype

Observasjonsmessig

Registrering (Faktiske)

140

Kontakter og plasseringer

Denne delen inneholder kontaktinformasjon for de som utfører studien, og informasjon om hvor denne studien blir utført.

Studiesteder

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

Deltakelseskriterier

Forskere ser etter personer som passer til en bestemt beskrivelse, kalt kvalifikasjonskriterier. Noen eksempler på disse kriteriene er en persons generelle helsetilstand eller tidligere behandlinger.

Kvalifikasjonskriterier

Alder som er kvalifisert for studier

18 år og eldre (Voksen, Eldre voksen)

Tar imot friske frivillige

Nei

Kjønn som er kvalifisert for studier

Hunn

Prøvetakingsmetode

Ikke-sannsynlighetsprøve

Studiepopulasjon

Postmenopausal women with breast cancer.

Beskrivelse

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)

Studieplan

Denne delen gir detaljer om studieplanen, inkludert hvordan studien er utformet og hva studien måler.

Hvordan er studiet utformet?

Designdetaljer

Kohorter og intervensjoner

Gruppe / Kohort
Intervensjon / Behandling
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.

Hva måler studien?

Primære resultatmål

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

Samarbeidspartnere og etterforskere

Det er her du vil finne personer og organisasjoner som er involvert i denne studien.

Studierekorddatoer

Disse datoene sporer fremdriften for innsending av studieposter og sammendragsresultater til ClinicalTrials.gov. Studieposter og rapporterte resultater gjennomgås av National Library of Medicine (NLM) for å sikre at de oppfyller spesifikke kvalitetskontrollstandarder før de legges ut på det offentlige nettstedet.

Studer hoveddatoer

Studiestart

1. september 2007

Primær fullføring (Faktiske)

1. desember 2009

Studiet fullført (Faktiske)

1. desember 2009

Datoer for studieregistrering

Først innsendt

14. august 2007

Først innsendt som oppfylte QC-kriteriene

14. august 2007

Først lagt ut (Anslag)

15. august 2007

Oppdateringer av studieposter

Sist oppdatering lagt ut (Anslag)

13. juli 2016

Siste oppdatering sendt inn som oppfylte QC-kriteriene

12. juli 2016

Sist bekreftet

1. juli 2016

Mer informasjon

Begreper knyttet til denne studien

Andre studie-ID-numre

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

Denne informasjonen ble hentet direkte fra nettstedet clinicaltrials.gov uten noen endringer. Hvis du har noen forespørsler om å endre, fjerne eller oppdatere studiedetaljene dine, vennligst kontakt register@clinicaltrials.gov. Så snart en endring er implementert på clinicaltrials.gov, vil denne også bli oppdatert automatisk på nettstedet vårt. .

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