[How could physical activity decrease the risk of breast cancer development and recurrence?].

Objectives: Breast cancer is the most frequent and deadly cancer among women. In France, 50% of adults are currently overweight, mostly as a result of a sedentary lifestyle. Numerous studies have highlighted overweight, obesity and lack of physical activity as risk factors for the occurrence and prognosis of cancers, particularly breast cancer.

[Can we avoid axillary lymph node dissection in patients with node positive invasive breast carcinoma?].

Objectives: The indications and modalities of breast and axillary surgery are undergoing profound change, with the aim of personalizing surgical management while avoiding over-treatment. To update best practices for axillary surgery, four questions were selected by the Senology Commission of the Collège National des Gynécologues et Obstétriciens Français (CNGOF), focusing on, firstly, the definition and evaluation of targeted axillary dissection (TAD) techniques; secondly, the possibility of surgical de-escalation in case of initial lymph node involvement while performing initial surgery; thirdly, in case of surgery following neo-adjuvant systemic therapy (NAST), and fourthly, contra-indications to de-escalation of axillary surgery to allow access to particular adjuvant systemic therapies.

Methods: The Senology Commission based its responses primarily on an analysis of the international literature, clinical practice recommendations and national and international guidelines.

Chemotherapy-Related Amenorrhea and Quality of Life Among Premenopausal Women With Breast Cancer.

Importance: Younger survivors of breast cancer frequently report more treatment-related symptoms, mostly related to the menopausal transition.

Objective: To assess factors associated with chemotherapy-related amenorrhea (CRA) and to evaluate its association with long-term quality of life (QOL).

Design, Setting, And Participants: The prospective, longitudinal Cancer Toxicities Study, a multicenter French cohort study, includes women with a diagnosis of stage I to III breast cancer and collects data approximately yearly after diagnosis.

Factors associated with enrolment in clinical trials among women with early-stage breast cancer.

Background: Clinical trials allow development of innovative treatments and ameliorate the quality of clinical care in oncology. Data show that only a minority of patients are enrolled in clinical trials. We assessed enrolment in clinical trials and its correlates among women with early breast cancer.

Impact of EPclin on adjuvant therapeutic decision making and comparison of EPclin to the PREDICT tool.

Purpose: Genomic signatures, such as EndoPredict, may help clinicians to decide which adjuvant treatment is the most appropriate.

Methods: We propose the EndoPredict assay for unclear cases of adjuvant treatment in patients treated in our comprehensive cancer center. We prospectively and retrospectively report the decision of adjuvant treatment before and after the EndoPredict assay, respectively, compared to the PREDICT's tool scores.