Impact of body mass index on survival outcomes of patients with metastatic renal cell carcinoma in the immuno-oncology era: a systematic review and meta-analysis
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Published version
Author(s)
Takemura, Kosuke
Yonekura, Satoru
Downey, Laura E
Evangelopoulos, Dimitris
Heng, Daniel YC
Type
Journal Article
Abstract
Context
Body mass index (BMI) is a useful tool for measuring body composition. It is unclear whether high BMI is a favourable indicator in patients with metastatic renal cell carcinoma (mRCC) treated with immune checkpoint inhibitors (ICIs).
Objective
To investigate the prognostic significance of BMI in patients with mRCC treated with ICIs in a systematic review and meta-analysis.
Evidence acquisition
Ovid MEDLINE, Embase, and Web of Science were systematically searched in July 2021, and meta-analysis was performed in accordance with the Preferred Reporting Items for Systematic Reviews and Meta-Analyses (PRISMA) statement.
Evidence synthesis
A total of 517 nonduplicate citations were screened by title and abstract, followed by full-text screening of 57 candidate articles to determine whether each study met the eligibility criteria. Overall, a total of 2281 patients from eight studies were included in the systematic review and meta-analysis. BMI levels were compared with overall survival (OS) and progression-free survival (PFS) in seven and three studies, respectively. Overweight/obese BMI was significantly associated with better OS compared to normal BMI (adjusted hazard ratio [aHR] 0.77, 95% confidence intervals [CI] 0.65–0.91; p = 0.002). A similar trend was observed for PFS (aHR 0.66, 95% CI 0.44–1.00; p = 0.050). There was no statistical heterogeneity or obvious publication bias among these studies.
Conclusions
This is the first systematic review and meta-analysis to evaluate the impact of BMI on survival outcomes of patients with mRCC treated with ICIs. To confirm the existence of the obesity paradox for patients with mRCC in the immuno-oncology era, high-quality clinical trials and basic research are warranted.
Patient summary
We reviewed published data on survival outcomes of 2281 patients with metastatic kidney cancer treated with immunotherapy drugs in relation to their body mass index (BMI). We found that higher BMI was associated with better survival when compared to normal BMI for this disease setting and treatment strategy.
Body mass index (BMI) is a useful tool for measuring body composition. It is unclear whether high BMI is a favourable indicator in patients with metastatic renal cell carcinoma (mRCC) treated with immune checkpoint inhibitors (ICIs).
Objective
To investigate the prognostic significance of BMI in patients with mRCC treated with ICIs in a systematic review and meta-analysis.
Evidence acquisition
Ovid MEDLINE, Embase, and Web of Science were systematically searched in July 2021, and meta-analysis was performed in accordance with the Preferred Reporting Items for Systematic Reviews and Meta-Analyses (PRISMA) statement.
Evidence synthesis
A total of 517 nonduplicate citations were screened by title and abstract, followed by full-text screening of 57 candidate articles to determine whether each study met the eligibility criteria. Overall, a total of 2281 patients from eight studies were included in the systematic review and meta-analysis. BMI levels were compared with overall survival (OS) and progression-free survival (PFS) in seven and three studies, respectively. Overweight/obese BMI was significantly associated with better OS compared to normal BMI (adjusted hazard ratio [aHR] 0.77, 95% confidence intervals [CI] 0.65–0.91; p = 0.002). A similar trend was observed for PFS (aHR 0.66, 95% CI 0.44–1.00; p = 0.050). There was no statistical heterogeneity or obvious publication bias among these studies.
Conclusions
This is the first systematic review and meta-analysis to evaluate the impact of BMI on survival outcomes of patients with mRCC treated with ICIs. To confirm the existence of the obesity paradox for patients with mRCC in the immuno-oncology era, high-quality clinical trials and basic research are warranted.
Patient summary
We reviewed published data on survival outcomes of 2281 patients with metastatic kidney cancer treated with immunotherapy drugs in relation to their body mass index (BMI). We found that higher BMI was associated with better survival when compared to normal BMI for this disease setting and treatment strategy.
Date Issued
2022-05
Date Acceptance
2022-03-05
Citation
European Urology Open Science, 2022, 39, pp.62-71
ISSN
2666-1683
Publisher
Elsevier BV
Start Page
62
End Page
71
Journal / Book Title
European Urology Open Science
Volume
39
Copyright Statement
Ó 2022 The Author(s). Published by Elsevier B.V. on behalf of European Association of Urology. This is an open access article
under the CC BY license (http://creativecommons.org/licenses/by/4.0/).
under the CC BY license (http://creativecommons.org/licenses/by/4.0/).
License URL
Identifier
http://sciencedirect.com/science/article/pii/S2666168322000532?via%3Dihub
Publication Status
Published