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

21. června 2016 aktualizováno: 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.

Přehled studie

Postavení

Neznámý

Podmínky

Rakovina prsu

Intervence / Léčba

Jiný

Detailní popis

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.

Typ studie

Pozorovací

Zápis (Očekávaný)

1000

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

60 let a starší (Dospělý, Starší dospělý)

Přijímá zdravé dobrovolníky

Pohlaví způsobilá ke studiu

Ženský

Metoda odběru vzorků

Ukázka pravděpodobnosti

Studijní populace

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.

Popis

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.

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

Počet skupin / kohort

Kohorty a intervence

Skupina / kohorta
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.

Co je měření studie?

Primární výstupní opatření

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

Sekundární výstupní opatření

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

Spolupracovníci a vyšetřovatelé

Zde najdete lidi a organizace zapojené do této studie.

Sponzor

Tianjin Medical University Cancer Institute and Hospital

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. července 2016

Primární dokončení (Očekávaný)

1. července 2017

Dokončení studie (Očekávaný)

1. listopadu 2017

Termíny zápisu do studia

První předloženo

15. května 2016

První předloženo, které splnilo kritéria kontroly kvality

21. června 2016

První zveřejněno (Odhad)

24. června 2016

Aktualizace studijních záznamů

Poslední zveřejněná aktualizace (Odhad)