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Retrospective Analysis of Effectiveness and Safety Profile of Anastrozole and Letrozole in HR+ Breast Cancer Patients

21 juni 2016 bijgewerkt door: Tianjin Medical University Cancer Institute and Hospital

Retrospective Analysis of Effectiveness and Safety Profile of Anastrozole and Letrozole in Adjuvant Treatment of HR+ Early Breast Cancer Patients

This is a single centre, observational and retrospective clinical study. The study group was about all HR positive postmenopausal breast cancer patients who were hospitalized between January, 2008 and October, 2010, and ever accepted AI therapy with the completed follow-up data.

Studie Overzicht

Toestand

Onbekend

Conditie

Interventie / Behandeling

Gedetailleerde beschrijving

The department of surgery at Tian Jin Medical University Cancer Hospital, one of the centers of excellence to treat patients with breast cancer in China, collects and maintains an electronic database of patients treatment details and follow up data. This is a single centre, observational and retrospective clinical study. The study group was about all HR positive postmenopausal breast cancer patients who were hospitalized between January, 2008 and October, 2010, and ever accepted AI therapy with the completed follow-up data.All the enrolled patients received breast-conserving surgery or whole breast surgery, and afterwards, received adjuvant chemotherapy according the pathological types. The patient's clinical pathological data include the age, family history, surgery options, pathologic type, the size of tumor, lymph node status, histological grade, chemotherapy regime, irradiation regime, and the expressions pattern of Her-2 and Ki-67. The research starts when the patients received the first time AI treatment. In the subsequent treatment, we analyzed the patients' bone density changes (T value >-1 indicates normal,-2.5≤T value≤-1 indicates mild osteoporosis, T value <-2.5 indicates severe osteoporosis) each half year for 3 years, analyzed the patients' liver function and kidney function changes each half year for 3 years (AST, ALT, ALP, TBIL, DBIL,UREA and CREA values > 2 times ULN indicates abnormal), analyzed the patients' blood-lipoids (LDL, HDL, TG and TC) each half year for 3 years, the occurrence rates of adverse reactions (skin flush, joint pain, headache, rash, nausea, vomiting, diarrhea, et al), the causes and rates of treatment termination between the 2 groups, the 3 years DFS and OS between two groups, and the factors associated with survival and prognosis, and identified the benefit individuals of AI therapy.

Studietype

Observationeel

Inschrijving (Verwacht)

1000

Deelname Criteria

Onderzoekers zoeken naar mensen die aan een bepaalde beschrijving voldoen, de zogenaamde geschiktheidscriteria. Enkele voorbeelden van deze criteria zijn iemands algemene gezondheidstoestand of eerdere behandelingen.

Geschiktheidscriteria

Leeftijden die in aanmerking komen voor studie

60 jaar en ouder (Volwassen, Oudere volwassene)

Accepteert gezonde vrijwilligers

Nee

Geslachten die in aanmerking komen voor studie

Vrouw

Bemonsteringsmethode

Kanssteekproef

Studie Bevolking

This is a single centre, observational and retrospective clinical study.The study group was about all HR positive postmenopausal breast cancer patients,and ever accepted AI therapy with the completed follow-up data. The patient's clinical pathological data include the age, family history, surgery options, pathologic type,et al. We analyzed the patients' bone density changes, liver function and kidney function changes,and analyzed the patients' blood-lipoids each half year for 3 years, the occurrence rates of adverse reactions, the causes and rates of treatment termination between the 2 groups, the 3 years DFS and OS between two groups, and the factors associated with survival and prognosis, and identified the benefit individuals of AI therapy.

Beschrijving

Inclusion Criteria:

  • 1). Breast cancer confirmed by histology or cytology with the tumor complete resection 2). ER and /or PR positive 3). Postmenopausal woman, defined as a woman fulfilling any 1 of the following criteria (based on the NCCN definition of menopause [National Comprehensive Cancer Network 2008]):

    1. Prior bilateral oophorectomy;
    2. Age ≥ 60 years;

    3. Age < 60 years and amenorrheic for 12 or more months in the absence of chemotherapy, tamoxifen, toremifene, or ovarian suppression and plasma FSH and estradiol in the postmenopausal range; if taking tamoxifen or toremifene, and age<60 years, then serial measurement of plasma FSH and estradiol are need to ensure in the postmenopausal ranges.

      4). Patients have received regular anastrozole or letrozole adjuvant treatment 6). The values of AST, ALT, ALP, TBIL, UREA, CREA were less than 2 times of ULN at the beginning of AI therapy.

      7). BMD T >-1 at baseline.

      Exclusion Criteria:

  • Any of the following is regarded as a criterion for exclusion from the study:

    1. . Previous use of the other AIs except for anastrozole or letrozole
    2. . Any severe concomitant condition before AI treatment: uncontrolled cardiac disease or uncontrolled diabetes mellitus et al.

Studie plan

Dit gedeelte bevat details van het studieplan, inclusief hoe de studie is opgezet en wat de studie meet.

Hoe is de studie opgezet?

Ontwerpdetails

Cohorten en interventies

Groep / Cohort
Anastrozole treatment group
The study group was about HR positive postmenopausal breast cancer patients who were hospitalized between January, 2008 and October, 2010, and ever accepted anastrozole therapy with the completed follow-up data.
letrozole treatment group
The study group was about HR positive postmenopausal breast cancer patients who were hospitalized between January, 2008 and October, 2010, and ever accepted letrozole therapy with the completed follow-up data.

Wat meet het onderzoek?

Primaire uitkomstmaten

Uitkomstmaat
Tijdsspanne
Compare the proportion of patients with abnormal biochemical test results including liver function, kidney function, blood-lipoids, bone density index.
Tijdsspanne: one year
one year

Secundaire uitkomstmaten

Uitkomstmaat
Tijdsspanne
To explore the proportion of patients discontinue AI treatment and reasons related to these discontinuation.
Tijdsspanne: one year
one year
To explore the 3-year DFS rate among the people under upfront therapy.
Tijdsspanne: one year
one year
To explore the 3-year OS rate among the people under upfront therapy.
Tijdsspanne: one year
one year
To explore the DFS in the patients who quit treating.
Tijdsspanne: one year
one year
To explore the OS in the patients who quit treating.
Tijdsspanne: one year
one year

Medewerkers en onderzoekers

Hier vindt u mensen en organisaties die betrokken zijn bij dit onderzoek.

Sponsor

Tianjin Medical University Cancer Institute and Hospital

Studie record data

Deze datums volgen de voortgang van het onderzoeksdossier en de samenvatting van de ingediende resultaten bij ClinicalTrials.gov. Studieverslagen en gerapporteerde resultaten worden beoordeeld door de National Library of Medicine (NLM) om er zeker van te zijn dat ze voldoen aan specifieke kwaliteitscontrolenormen voordat ze op de openbare website worden geplaatst.

Bestudeer belangrijke data

Studie start

1 juli 2016

Primaire voltooiing (Verwacht)

1 juli 2017

Studie voltooiing (Verwacht)

1 november 2017

Studieregistratiedata

Eerst ingediend

15 mei 2016

Eerst ingediend dat voldeed aan de QC-criteria

21 juni 2016

Eerst geplaatst (Schatting)

24 juni 2016

Updates van studierecords

Laatste update geplaatst (Schatting)

24 juni 2016

Laatste update ingediend die voldeed aan QC-criteria

21 juni 2016

Laatst geverifieerd

1 april 2016

Meer informatie

Termen gerelateerd aan deze studie

Trefwoorden

Aanvullende relevante MeSH-voorwaarden

Andere studie-ID-nummers

  • bc2015014

Plan Individuele Deelnemersgegevens (IPD)

Bent u van plan om gegevens van individuele deelnemers (IPD) te delen?

NEE

Deze informatie is zonder wijzigingen rechtstreeks van de website clinicaltrials.gov gehaald. Als u verzoeken heeft om uw onderzoeksgegevens te wijzigen, te verwijderen of bij te werken, neem dan contact op met register@clinicaltrials.gov. Zodra er een wijziging wordt doorgevoerd op clinicaltrials.gov, wordt deze ook automatisch bijgewerkt op onze website .

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