[Online Survey about Communication between Abemaciclib-Treated Patients with Breast Cancer and Physicians].

Objective: To describe the actual communication of patients with breast cancer on oral abemaciclib treatment and the motivating factors to continue treatment.

Methods: An online survey was conducted in July and August 2023 across Japan among patients aged ≥18 years who were undergoing or had prior experience with abemaciclib treatment and physicians who had prescribed abemaciclib during the past year.

Results: Responses from 80 patients and 78 physicians were obtained.

[Factors Affecting Adherence to Adjuvant Endocrine Therapy in Japanese Patients with Breast Cancer-An Observational Study].

The purpose of this study was to investigate adherence to adjuvant endocrine therapy (ET) and the factors affecting demotivation and motivation to continue adjuvant ET. In patients with hormone receptor-positive breast cancer in Japan, an online survey was conducted from June to July 2021 to investigate the treatment effects, side effects, concerns about side effects(for demotivation only), convenience of hospital visits, treatment duration, concerns about recurrence/progression, treatment cost, support from healthcare professionals, and support from family, the patient association, and peers(for motivation only). According to the responses from 263 patients, the most common factor affecting demotivation to continue adjuvant ET was the burden of side effects, and the most common factor affecting motivation to continue adjuvant ET was concerns about recurrence/progression.

Overnight fasting before lapatinib administration to breast cancer patients leads to reduced toxicity compared with nighttime dosing: a retrospective cohort study from a randomized clinical trial.

Background: The bioavailability of lapatinib is affected by food, even following the 1 hour fast recommended by the package insert. We hypothesized that overnight fasting would minimize food-drug interactions. Here, we investigated if lapatinib administration timing is associated with its tolerability, efficacy, and pharmacokinetics.