Geriatric assessment tool application in treatment recommendations for older women with breast cancer

INTRODUCTION: Treatment of early breast cancer in older women is usually not guideline concordant owing to lack of routine evaluation of their potential frailty. We assessed the feasibility and impact of a self-administered geriatric assessment on the decision-making process in women aged 65 and above treated in a UK District General Hospital. METHODS: One hundred and one patients, aged 65 and above, with early stage, non-metastatic breast cancer were prospectively recruited between Dec-2018 and March-2021. Patients with metastatic breast cancer, a previous history of cancer and dementia were excluded. All patients had a geriatric assessment with a self-administered questionnaire (mycarg.org). All cases were discussed in the multidisciplinary meeting (MDT) and a pre geriatric assessment recommendations was made, based on the tumour grade, size, node status and receptor status. The findings of the assessment were later discussed in a second meeting and a further recommendation was made based on the geriatric assessment. Any change in the proposed treatment was recorded. Potential factors (age, Body Mass Index, co-morbidities, medications, instrumental activities of daily living, and basic activities of daily living, social support and psychological status) associated with a change in the treatment recommendation were compared using Pearson's Chi square tests for categorized data, and Mann Whitney U test for continuous data. A multivariate logistic regression was performed to test the association between geriatric assessment domains and change in treatment decision. The multivariate model was built using variables which were associated in the bivariate analysis with a p-value< 0.20. RESULTS: Patients aged less than 70 years were more likely to be diagnosed through screening programme as compared to older women (64.4% vs. 35.6%, p = 0.001). Self-administered geriatric assessment identified patients who were requiring assistance in their daily routine activities, and hence, were assessed to have higher morbidity status. A third of patients required assistance in their routine activities, with 18/101 patients requiring significant help during self-care. 90% patients were independent for Activity of Daily Living (ADL) at baseline and 34.76% for Instrumental Activity of Daily Living (IADL). Among the 101 patients evaluated, proposed change in the initial cancer treatment plan was made in 21.8% of patients after the second MDT. Omission of chemotherapy was recommended in 4 patients, omission of radiotherapy in 15 patients and omission of both chemo and radiotherapy in 2 patients. One patient was advised to omit Zolidronic acid, as she was noted to have renal impairment. No patient in this cohort had suggestion for omission of surgery or endocrine therapy. In the bivariate analysis, need for assistance for activities of daily living (ADLs), low physical performance (KPS), polypharmacy (3 or more medications), lack of social support as assessed using the Social Support: Medical Outcomes Study (MOS) Social Support Survey and high BMI (30 or more) all showed significance but on multivariate analysis only polypharmacy was significantly associated with change in the initial cancer treatment plan. CONCLUSIONS: The results of this study of breast cancer patients aged 65 and above suggest that a self-administered geriatric assessment may influence treatment recommendations in a subset of patients. Recommendations that were influenced by the geriatric assessment mainly included those related to the significant morbidity that may have impacted the use of chemotherapy and/or radiotherapy.