The lived experience of patients with breast cancer on adjuvant endocrine therapy: side effects and coping strategies during the first year of medication initiation

Purpose: Adjuvant endocrine therapy (AET) is pivotal for hormone receptor-positive breast cancer patients, significantly enhancing survival rates. Yet, adherence to AET remains challenging due to side effects. This study delves into the lived experience of breast cancer survivors concerning AET-induced side effects and examines differences in symptom profiles between Tamoxifen and aromatase inhibitors (AIs). Methods: We interviewed 35 breast cancer survivors on AET, conducting qualitative iterative analysis using grounded theory. A codebook was developed to aid data coding and interpretation. NVIVO software facilitated comprehensive transcript analysis. Results: Survivors reported a spectrum of side effects like hot flashes, sexual issues, joint pain, stiffness, mood swings, and fertility concerns. Symptom profiles differed based on AET type. Tamoxifen users experienced more frequent sexual side effects and mood swings, while AIs were linked to joint pain, stiffness, and bone health worries. Those on AET for over 6 months expressed heightened concerns about side effects. Conclusion: Tailored patient education, aligned with AET type, empowers survivors to manage side effects using self-regulatory strategies. Acknowledging distinct symptom profiles enables informed decisions, improving adherence and quality of life. Implications: This study underscores tailored survivorship support, equipping patients with tools to manage side effects, enhancing adherence, and long-term outcomes. The findings inform the integration of comprehensive survivorship programs, emphasizing individualized strategies for managing side effects and promoting better adherence and improved quality of life.