The main purpose of this study is to evaluate the quality of life of premenopausal participants with Hormone Receptor (HR) positive and Human Epidermal Growth Factor Receptor-2 (HER2) negative breast cancer who are receiving, in addition to triptorelin, an endocrine cancer treatment. The study will also get more information about: - the effectiveness and safety of triptorelin; - the relationship that could exist between the characteristics of the disease and the treatment chosen by the Investigator.
Study Type
OBSERVATIONAL
Enrollment
450
Policlinico S. Orsola - Malpighi
Bologna, Italy
Ospedale Oncologico "A. Businco"
Cagliari, Italy
Azienda Ospedaliero-Universitaria Careggi (AOUC)
Florence, Italy
ASST Lecco
Lecco, Italy
Fondazione IRCCS Ca' Granda Ospedale Maggiore Policlinico
Milan, Italy
IRCCS San Raffaele
Milan, Italy
Istituto Europeo di Oncologia
Milan, Italy
Istituto Nazionale Tumori
Milan, Italy
Ospedale S. Gerardo
Monza, Italy
AORN Cardarelli
Naples, Italy
...and 12 more locations
Proportion of participants reaching a clinically significant change in the global Quality of Life (QoL) score.
Defined as a minimum change of ≥4 points using the Functional Assessment of Cancer Therapy - General (FACT-G) questionnaire.
Time frame: At 18 months.
Tumor characteristics.
Time frame: At baseline.
Percentage of days covered of compliance
Time frame: At 18 months
Description of breast cancer treatment.
Including triptorelin formulation (1-month or 3-month formulation), planned neoadjuvant/adjuvant chemotherapy (yes/no) and oral adjuvant endocrine treatment prescribed ((Aromatase Inhibitor (AI) or Tamoxifen (TAM))
Time frame: At baseline.
Identification of potential demographic factors predictive of any treatment switch.
A multivariate logistic regression will be used to identify demographic factors predictive of any treatment switches.
Time frame: At 18 months.
Identification of demographic and tumor characteristics correlated to the entire prescribed breast cancer treatment.
A multivariate logistic regression will be used to identify characteristics correlated to the prescription of the 1-month or 3-month triptorelin formulations with TAM or an AI.
Time frame: At 18 months.
Proportion of participants who switch between triptorelin formulations, from AI to TAM or vice-versa, or undergo both triptorelin and adjuvant therapy switches
The switches between triptorelin formulation or from the AI to TAM will be described together with the reasons for switches.
Time frame: At 18 months.
Proportion of disease-free participants.
Disease-free survival is defined as the time from triptorelin initiation to disease recurrence as determined by the Investigator.
Time frame: At 18 months.
Proportion of participants alive.
The OS rate will be estimated using the Kaplan-Meier method. Survival time will be defined as the time from triptorelin initiation to participant's death for any reason.
Time frame: At 18 months.
Proportion of compliant patients (100% of the planned injections) to triptorelin
Time frame: At 18 months.
Identification of potential demographic, tumor-related or breast cancer treatment-related factors predictive of suboptimal OFS.
as per local definition, or empirically defined as E2 levels ranging between 30 and 70 pg/ml according to the average range collected in Italian centers. A multivariate logistic regression will be used to identify predictive factors of suboptimal OFS as per local definition
Time frame: At 18 months.
Identification of potential demographic, tumor-related or breast cancer treatment-related factors predictive of clinically significant global QoL change
A multivariate logistic regression will be used to identify any predictive factors of clinically significant global QoL change (i.e. ≥4 points).
Time frame: At 6, 12 and 18 months.
Incidence of all treatment-emergent adverse events (TEAEs)
Summary incidence tables of nonserious and serious AEs, as well as special situations presented overall, by System Organ Class and Preferred term (MedDRA coding) and according to intensity and causality
Time frame: From baseline up to 18 months.
Change in the Quality of Life (QoL) score using the FACT-G questionnaire with the Endocrine Symptoms (ES) subscale.
All global scores and subscores of the QoL questionnaire will be described at each timepoint. Comparisons will be performed using the paired Student t-test.
Time frame: From baseline and at 6, 12 and 18 months
Description of demographic data.
Including age at diagnosis, parity, pregnancy desire (yes/no), oocyte cryopreservation (yes/no) and embryo cryopreservation (yes/no);
Time frame: At baseline.
Description of demographic data
Including Body Mass Index calculation
Time frame: At baseline.
Proportion of participants with hormonal levels (E1, E2 and FSH) corresponding to Ovarian Function Suppression (OFS)
As per local definition, or empirically defined as E2 levels \<30 pg/ml according to the average level collected in Italian centers)
Time frame: From baseline up to 18 months.
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