Background: The (ECOG) performance status (PS) is commonly used to evaluate the functional ability of patients undergoing antitumor therapy. An ECOG PS of 2, indicating patients capable of self-care but restricted strenuous activity, can complicate treatment decisions owing to concerns regarding treatment-related toxicity. We investigated whether frailty assessment could help discriminate treatment tolerance and survival outcomes in patients with an ECOG PS of 2.
Methods: We prospectively included 45 consecutive patients, aged ≥65 years, with an ECOG PS of 2, and newly diagnosed solid cancer scheduled for chemotherapy. Frailty was assessed using an eight-indicator geriatric assessment. The primary outcome was overall survival (OS) based on frailty status; secondary outcomes included treatment tolerance and toxicity.
Results: The median patient age was 73 years (range 65-94), and 71% had stage IV disease. Predominant frailty-related deficits were functional decline (96%), malnutrition (78%), and polypharmacy (51%). The median OS was 12.6 months (95% confidence interval [CI]: 6.8-18.4). Patients with 4-6 deficits had significantly lower OS than those with 1-3 deficits (9.9 months vs. 20.0 months, adjusted hazard ratio 2.51, 95% CI: 1.16-5.44, P = .020). Frailty significantly correlated with reduced 12-week chemotherapy competence (52% vs. 85%, adjusted odds ratio [OR] .14, 95% CI: .03-.70, P = .016) and enhanced risk of unexpected hospitalization (60% vs. 20%, adjusted OR 6.80, 95% CI: 1.64-28.1, P = .008).
Conclusion: Our findings highlight the multifaceted nature of patients with an ECOG PS of 2 and emphasize the importance of frailty assessment for treatment outcomes.
Keywords: eastern cooperative oncology group performance; frailty; geriatric assessment; toxicity.