Impact of immune checkpoint inhibitors and targeted therapy on health-related quality of life of people with stage III and IV melanoma: a mixed-methods systematic review.

BACKGROUND: Immune checkpoint inhibitors (ICI) and targeted therapies (TT) have significantly improved disease control and survival in people with stage III and IV cutaneous melanoma. Understanding the impact of therapy on health-related quality of life (HRQL) is vital for treatment decision-making and determining targets for supportive care intervention. We conducted a mixed-methods systematic review to synthesise the impact of ICIs and TT on all domains of HRQL in these populations.

METHODS: A systematic literature search was conducted in April 2022 on MEDLINE, PsycINFO, Embase and the Cochrane Central Register of Controlled Trials. Quantitative and qualitative data relevant to the review question were extracted and synthesised in tables according to setting (adjuvant versus metastatic), treatment type (ICI versus TT) and HRQL issue.

RESULTS: Twenty-eight papers describing 27 studies were included: 15 randomised controlled trials (RCTs), four cohort studies, four single arm cross-sectional studies, two qualitative studies, one case control study and one mixed-methods study. In four studies of people with resected stage III melanoma, adjuvant pembrolizumab and dabrafenib-trametinib did not clinically or statistically change HRQL compared to baseline. In 17 studies of people with unresectable stage III/IV melanoma, inconsistencies in the impact of ICI on symptoms, functioning and overall HRQL were noted across different study designs. TT was associated with improvements in symptoms, functioning and HRQL across six studies.

CONCLUSION: This review highlights the key physical, psychological and social issues experienced by people with stage III and IV melanoma treated with ICI and TT. Inconsistencies in the impact of ICI on HRQL were observed in different study designs. This highlights the need for treatment-specific patient-reported outcome measures for determining the impact of these therapies on HRQL and real-world data to inform treatment decision-making and appropriate supportive care interventions.