Development and initial psychometric evaluation of a radiotherapy-related symptom assessment tool, based on data from patients with brain tumours undergoing proton beam therapy

Symptom experience and symptom distress in patients with malignant brain tumor treated with proton therapy: A five-year follow-up study

Background and purpose

Since patients with primary brain tumor are expected to become long-term survivors, the prevention of long-term treatment-induced side effects is particularly important. This study aimed to explore whether symptom experience and symptom distress change over five years in adults with primary brain tumors treated with proton therapy. An additional aim was to explore whether symptom experience and symptom distress correlate.

Materials and methods

The study had a longitudinal observational design. Adult (≥18 years) patients (n = 170) with primary brain tumors treated with proton therapy were followed over five years. Symptom experience and symptom distress were evaluated using the patient-reported Radiotherapy-Related Symptom Assessment Scale. Data from baseline, 1, 12, and 60 months were analyzed using non-parametric tests.

Results

Of the 170 patients, the levels of symptoms and symptom distress were low. Fatigue increased at 1 (p=0.005) and 12 months (p=0.025) and was the most frequent symptom from baseline to 60 months' follow-up. Cognitive impairment increased at 12 (p=0.027) and 60 months (p<0.001) and was the most distressing symptom at 60 months' follow-up. There were significant, moderate to strong, correlations at all time points between symptom experience and symptom distress of fatigue, insomnia, pain, dyspnea, cognitive impairment, worry, anxiety, nausea, sadness, constipation, and skin reactions.

Conclusion

Symptom experience and symptom distress changed in intensity over time with cognitive impairment as the most distressing symptom at 60 months. Future research should focus on identifying effective interventions aimed at alleviating these symptoms and reducing symptom distress for this vulnerable group of patients.

Evaluating patient reported outcomes and experiences in a novel proton beam clinic - challenges, activities, and outcomes of the ProtonCare project

BACKGROUND

The ProtonCare Study Group (PCSG) was formed with the purpose to develop and implement a framework for evaluation of proton beam therapy (PBT) and the related care at a novel clinic (Skandionkliniken), based on patient reported data.

METHOD

A logic model framework was used to describe the process of development and implementation of a structured plan for evaluation of PBT for all diagnoses based on patient reported data. After the mission for the project was determined, meetings with networks and stakeholders were facilitated by PCSG to identify assumptions, resources, challenges, activities, outputs, outcomes, and outcome indicators.

RESULT

This paper presents the challenges and accomplishments PCSG made so far. We describe required resources, activities, and accomplished results. The long-term outcomes that were outlined as a result of the process are two; 1) Improved knowledge about health outcomes of patients that are considered for PBT and 2) The findings will serve as a base for clinical decisions when patients are referred for PBT.

CONCLUSION

Using the logical model framework proved useful in planning and managing the ProtonCare project. As a result, the work of PCSG has so far resulted in long-lasting outcomes that creates a base for future evaluation of patients' perspective in radiotherapy treatment in general and in PBT especially. Our experiences can be useful for other research groups facing similar challenges. Continuing research on patients´ perspective is a central part in ongoing and future research. Collaboration, cooperation, and coordination between research groups/networks from different disciplines are a significant part of the work aiming to determine the more precise role of PBT in future treatment options.

Evaluation of skin reactions during proton beam radiotherapy - Patient-reported versus clinician-reported

BACKGROUND

Skin reaction is a common side-effect of radiotherapy and often only assessed as clinician-reported outcome (CRO). The aim was to examine and compare patient-reported outcome (PRO) of skin reactions with CRO for signs of acute skin reactions for patients with primary brain tumour receiving proton beam radiotherapy (PBT). A further aim was to explore patients' experiences of the skin reactions.

METHODS

Acute skin reactions were assessed one week after start of treatment, mid-treatment and end of treatment among 253 patients with primary brain tumour who underwent PBT. PRO skin reactions were assessed with the RSAS and CRO according to the RTOG scale. Fleiss' kappa was performed to measure the inter-rater agreement of the assessments of skin reactions.

RESULTS

The results showed a discrepancy between PRO and CRO acute skin reactions. Radiation dose was associated with increased skin reactions, but no correlations were seen for age, gender, education, occupation, other treatment or smoking. There was a poor agreement between patients and clinicians (κ = -0.016) one week after the start of PBT, poor (κ = -0.045) to (κ = 0.396) moderate agreement at mid treatment and poor (κ = -0.010) to (κ = 0.296) moderate agreement at end of treatment. Generally, patients' symptom distress toward skin reactions was low at all time points.

CONCLUSION

The poor agreement between PRO and CRO shows that the patient needs to be involved in assessments of skin reactions for a more complete understanding of skin reactions due to PBT. This may also improve patient experience regarding involvement in their own care.