The purpose of this study is to evaluate a side effect prevention training (SEPT) that optimizes patients' response expectations before the start of adjuvant endocrine treatment (AET) to prevent nocebo side effects and enhance quality of life during longer term drug intake.
The majority of breast cancer patients discontinue today's standard adjuvant treatment (endocrine therapy) due to side effects and reduced quality of life. Thereby, most side effects are unspecific, thus, not related to the specific pharmacological action of the drug, but to the individual treatment context and patients´ expectations (nocebo effects). The aim of this study is to evaluate a side effect prevention training (SEPT) that optimizes patients' response expectations before the start of pharmacotherapy to prevent nocebo side effects during longer term drug intake. Using a randomized trial, we will study the time course of response expectations and side effects in breast cancer patients receiving either SEPT, standard medical care or an attention-control intervention ("supportive therapy") before the start of adjuvant endocrine therapy. We will analyze the effects of changing pre-treatment expectations on cancer-treatment related side effects, quality of life and adherence 3 and 6 months after the start of endocrine therapy. Moderator analyses will be used to determine predictors of non-specific medication side effects and patients that are at high risk of experiencing them. Furthermore, we will explore the mediating influence of coping behaviours, thereby providing insights into pathways of clinical nocebo effects. The study findings promise significant advances in the clinical application of nocebo research with strong implications for clinical and research practice.
Study Type
INTERVENTIONAL
Allocation
RANDOMIZED
Purpose
PREVENTION
Masking
SINGLE
Enrollment
165
SEPT is aimed to optimize patients' response expectations before the start of pharmacotherapy to prevent nocebo side effects during adjuvant endocrine treatment. SEPT is a three session cognitive-behavioural training. It includes psychoeducation about AET to provide a realistic view on AET, reduction of concerns about side effects and strengthening of necessity beliefs. Further contents are side effect management training and problem solving to enhance self-efficacy expectations about coping as well as imagination training to integrate positive aspects of medication into daily life.
Supportive therapy includes common or unspecific factors such as elicitation of affect, a treatment context, empathy, reflective listening, and feeling understood. Supportive therapy thus provides a control condition for common factors and therapist attention, while lacking the specific intervention part. It will be delivered in the same frequency and at the same time points as the side effect prevention training (three individual sessions and three booster telephone calls).
University Medical Center Hamburg-Eppendorf
Hamburg, Germany
Side Effects (General Assessment of Side Effects, GASE)
Side Effects 3 and 6 months after the start of adjuvant endocrine therapy, controlled for baseline symptoms, staging, age, medication
Time frame: Baseline, 3 and 6 months after the start of adjuvant endocrine therapy (AET)
Change in Patients Expectations (General Assessment of Side Effects-Expect/Cope, Gase-Expect/Cope; Brief Illness Perceptions Questionnaire, B-IPQ; Beliefs about medicine questionnaire, BMQ-D)
Change in patients expectations from baseline/pre-intervention (expected average 2 weeks after surgery) to post-intervention (expected average 5 weeks after surgery) and prospective expectations 3 and 6 months after the start of adjuvant endocrine therapy
Time frame: Baseline and 5 weeks after surgery, before start of adjuvant endocrine therapy
Change in Anxiety and Depression (Hospital Anxiety and Depression Scale, HADS-D)
Change in anxiety and depression from baseline to 5 weeks after surgery to 3 months after the start of AET to 6 months after the start of AET
Time frame: Baseline, 5 weeks after surgery, 3 months after the start of adjuvant endocrine therapy (AET) and 6 months after the start of AET
Change in Fear of Progression (Fear of Progression Questionnaire-Short Form, FoP-Q-SF)
Change in Fear of Progression from baseline to 5 weeks after surgery to 3 months after the start of AET to 6 months after the start of AET
Time frame: Baseline, 5 weeks after surgery, 3 months after the start of adjuvant endocrine therapy (AET) and 6 months after the start of AET
Change in Adherence Intention and Adherence (Medication Adherence Report Scale, MARS-D)
Change in Adherence Intention and Adherence from baseline to 5 weeks after surgery to 3 months after the start of AET to 6 months after the start of AET
This platform is for informational purposes only and does not constitute medical advice. Always consult a qualified healthcare professional.
Time frame: Baseline, 5 weeks after surgery, 3 months after the start of adjuvant endocrine therapy (AET) and 6 months after the start of AET
Change in Quality of Life (European Organisation for Research and Treatment of Cancer Quality of Life Questionnaire with breast module, EORTC QLQ-C30 and QLQ-BR23)
Change in Quality of Life from baseline to 3 months after the start of adjuvant endocrine therapy to 6 months after the start of adjuvant endocrine therapy
Time frame: Baseline, 3 and 6 months after the start of adjuvant endocrine therapy (AET)
Change in Coping with Side Effects (General Assessment of Side Effects-Cope, GASE-Cope)
Change in coping with Side Effects from 3 months after the start of adjuvant endocrine therapy to 6 months after the start of adjuvant endocrine therapy
Time frame: 3 and 6 months after the start of adjuvant endocrine therapy (AET)