Systematic literature review and meta-analysis of health state utility values in metastatic castration-resistant prostate cancer

Despite being an important goal, the preservation of quality of life of patients with metastatic castration-resistant prostate cancer (mCRPC) is poorly characterized across lines of therapy. In this review, a systematic literature review and meta-analysis were conducted to synthesize EuroQoL 5-Dimension (EQ-5D) data among adult men with asymptomatic or mildly symptomatic mCRPC in both first line (1L) and second line and later (2L+) therapy. MEDLINE, Embase, and Cochrane CENTRAL were searched from inception to October 2022 using Ovid. Supplemental searches of other data sources were also conducted (PROSPERO registration: CRD42021283512). Meta-analyses were conducted to estimate pooled EQ-5D index utility values and EQ visual analog scale (VAS) scores in both 1L and 2L+. Various sensitivity analyses were also conducted. Forty-five unique publications met the inclusion criteria. In primary studies, baseline EQ-5D index utility values ranged from 0.7 to 0.9 in 1L and 0.63 to 0.7 in 2L+. Twelve trials and observational studies were feasible for inclusion in the meta-analysis. The pooled mean baseline EQ-5D index utility value was estimated as 0.79 (95% CI, 0.70-0.84) and 0.69 (95% CI, 0.67-0.71) for 1L (n = 7 studies) and 2L + (n = 4 studies), respectively. The pooled mean baseline EQ VAS score was estimated as 74.63 (95% CI, 70.97-78.29) and 65.82 (95% CI, 64.53-67.11) in 1L and 2L+, respectively. Limitations include hampered comparability between studies due to heterogeneity in study design and geographical regions. This study provides a comprehensive synthesis of EQ-5D data presently available in adults with mCRPC in both 1L and 2L + therapy.