Functional decline and resilience in older adults over the age of 70 receiving radiotherapy for breast cancer: A pilot study.

INTRODUCTION: Radiotherapy (RT) as an adjuvant, post-lumpectomy treatment has been shown to improve local control and survival in people with breast cancer. While adverse events because of cancer treatments are common, many older adults have demonstrated the ability to return to their baseline levels of physical functioning. There are limited reports on the functional decline and recovery of older patients undergoing RT. The primary objective of this study was to investigate physical function at various time points during RT in people with breast cancer over age 70 and their ability to recover post-decline. MATERIALS AND METHODS: Seventy-nine patients with breast cancer aged 70+ undergoing adjuvant RT at Sunnybrook Health Science Centre, Toronto, Ontario, Canada were enrolled for a prospective observational study. Participants completed the EORTC QLQ-C30 quality of life questionnaire before their first RT, after their final RT, and at three- and six-months post-RT to assess changes in physical function. Descriptive statistics were utilized to evaluate EORTC QLQ-C30 scores. A higher score was indicative of poorer physical function. Physical decline was a 10+ point increase in EORTC QLQ-C30 score from baseline to the last RT, and resilience was a return to <10 points from the baseline score within six months post-RT. Resistance was a post-RT change from the baseline score by fewer than 10 points. RESULTS: Nine patients (11%) experienced physical decline following their last RT, and two of them (22%) displayed resilience within six months. There were no demographic or symptom variables associated with functional decline from the baseline to post-RT, nor with resilience. Nausea, pain, and diarrhea post-RT were associated with functional decline at six months post-RT (P = 0.0185, P = 0.0449, P = 0.0007, respectively). Nausea and diarrhea at baseline were associated with resistance to decline (P = 0.0055, P = 0.019, respectively), and with decline at the six-month follow-up (P ≤0.0001, P = 0.0235, respectively). DISCUSSION: This study highlights the incidence of physical decline in patients over age 70 receiving RT for breast cancer and identifies risk factors for decline. Future research with a larger sample, longer follow-up period, and incorporating geriatric assessments pre-RT is warranted to better understand functional decline and resilience in this population.

MASCC clinical practice guidelines for the prevention and management of acute radiation dermatitis: part 1) systematic review.

Acute radiation dermatitis (ARD) commonly develops in cancer patients undergoing radiotherapy and is often characterized by erythema, desquamation, and pain. A systematic review was conducted to summarize the current evidence on interventions for the prevention and management of ARD. Databases were searched from 1946 to September 2020 to identify all original studies that evaluated an intervention for the prevention or management of ARD, with an updated search conducted in January 2023. A total of 235 original studies were included in this review, including 149 randomized controlled trials (RCTs). Most interventions could not be recommended due to a low quality of evidence, lack of supporting evidence, or conflicting findings across multiple trials. Photobiomodulation therapy, Mepitel® film, mometasone furoate, betamethasone, olive oil, and oral enzyme mixtures showed promising results across multiple RCTs. Recommendations could not be made solely based on the published evidence due to limited high-quality evidence. As such, Delphi consensus recommendations will be reported in a separate publication.