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Evaluation of objective response, disease control and progression-free survival as surrogate end-points for overall survival in anti–programmed death-1 and anti–programmed death ligand 1 trials.
- Source :
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European Journal of Cancer . Jan2019, Vol. 106, p1-11. 11p. - Publication Year :
- 2019
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Abstract
- Abstract Background We aimed to assess whether the Response Evaluation Criteria in Solid Tumors (RECIST) criteria–based objective response rate (ORR), disease control rate (DCR) and progression-free survival (PFS) could be valid surrogate end-points for overall survival (OS) in anti–programmed death-1 (PD-1)/programmed death ligand 1 (PD-L1) trials. Methods We systematically reviewed phase 2 and phase 3 trials of anti–PD-1/PD-L1 drug trials of advanced or recurrent solid tumours that reported OS and at least one of the RECIST criteria–based end-points. We used Spearman rank correlation to evaluate the strength of the association between these end-points and OS and a linear regression model, weighted by the sample size, to assess the association between the treatment effect on these end-points and OS. We also performed sensitivity analyses and a leave-one-out cross-validation approach to evaluate the robustness of our findings. Results Forty-three qualifying trails comprising 15,088 patients were eligible. PFS showed good correlation with OS (squared Spearman rank correlation coefficient [ r s 2 ] = 0.54; P < 0.001), while ORR and DCR illustrated moderate association with OS (r s 2 = 0.29 and 0.28, respectively; both P < 0.001). The correlation was moderate between the treatment effects on PFS and OS (coefficient of determination [ R 2 ] = 0.37, P < 0.001) and poor among ORR, DCR and OS (R 2 = 0.10 and 0.08, respectively); these were confirmed by sensitivity analyses (all R 2 < 0.75) and the leave-one-out cross-validation approach. Conclusions No RECIST criteria–based end-points could be a valid surrogate for OS. At present, we proposed to set OS as the primary end-point in anti–PD-1/PD-L1 drug trials of advanced or recurrent solid tumours. Highlights • None of the Response Evaluation Criteria in Solid Tumors (RECIST) criteria–based end-points could be a valid surrogate for overall survival (OS). • Optimisation of the RECIST criteria in immunotherapy trials is still urgently needed. • OS should still be set as the primary end-point in anti–programmed death-1/programmed death ligand 1 drug trials. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 09598049
- Volume :
- 106
- Database :
- Academic Search Index
- Journal :
- European Journal of Cancer
- Publication Type :
- Academic Journal
- Accession number :
- 133554498
- Full Text :
- https://doi.org/10.1016/j.ejca.2018.10.011