External validation and comparison with other models of the International Metastatic Renal-Cell Carcinoma Database Consortium prognostic model: A population-based study

Daniel Y.C. Heng, Wanling Xie, Meredith M. Regan, Lauren C. Harshman, Georg A. Bjarnason, Ulka N. Vaishampayan, Mary Mackenzie, Lori Wood, Frede Donskov, Min Han Tan, Sun Young Rha, Neeraj Agarwal, Christian Kollmannsberger, Brian I. Rini, Toni K. Choueiri

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Abstract

Background: The International Metastatic Renal-Cell Carcinoma Database Consortium model offers prognostic information for patients with metastatic renal-cell carcinoma. We tested the accuracy of the model in an external population and compared it with other prognostic models. Methods: We included patients with metastatic renal-cell carcinoma who were treated with first-line VEGF-targeted treatment at 13 international cancer centres and who were registered in the Consortium's database but had not contributed to the initial development of the Consortium Database model. The primary endpoint was overall survival. We compared the Database Consortium model with the Cleveland Clinic Foundation (CCF) model, the International Kidney Cancer Working Group (IKCWG) model, the French model, and the Memorial Sloan-Kettering Cancer Center (MSKCC) model by concordance indices and other measures of model fit. Findings: Overall, 1028 patients were included in this study, of whom 849 had complete data to assess the Database Consortium model. Median overall survival was 18·8 months (95% 17·6-21·4). The predefined Database Consortium risk factors (anaemia, thrombocytosis, neutrophilia, hypercalcaemia, Karnofsky performance status <80%, and <1 year from diagnosis to treatment) were independent predictors of poor overall survival in the external validation set (hazard ratios ranged between 1·27 and 2·08, concordance index 0·71, 95% CI 0·68-0·73). When patients were segregated into three risk categories, median overall survival was 43·2 months (95% CI 31·4-50·1) in the favourable risk group (no risk factors; 157 patients), 22·5 months (18·7-25·1) in the intermediate risk group (one to two risk factors; 440 patients), and 7·8 months (6·5-9·7) in the poor risk group (three or more risk factors; 252 patients; p<0·0001; concordance index 0·664, 95% CI 0·639-0·689). 672 patients had complete data to test all five models. The concordance index of the CCF model was 0·662 (95% CI 0·636-0·687), of the French model 0·640 (0·614-0·665), of the IKCWG model 0·668 (0·645-0·692), and of the MSKCC model 0·657 (0·632-0·682). The reported versus predicted number of deaths at 2 years was most similar in the Database Consortium model compared with the other models. Interpretation: The Database Consortium model is now externally validated and can be applied to stratify patients by risk in clinical trials and to counsel patients about prognosis. Funding: None.

Original languageEnglish
Pages (from-to)141-148
Number of pages8
JournalThe Lancet Oncology
Volume14
Issue number2
DOIs
Publication statusPublished - 2013 Feb 1

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Renal Cell Carcinoma
Databases
Population
Survival
Kidney Neoplasms
Karnofsky Performance Status
Thrombocytosis
Neoplasms
Hypercalcemia
Vascular Endothelial Growth Factor A
Anemia
Clinical Trials
Therapeutics

All Science Journal Classification (ASJC) codes

  • Oncology

Cite this

Heng, Daniel Y.C. ; Xie, Wanling ; Regan, Meredith M. ; Harshman, Lauren C. ; Bjarnason, Georg A. ; Vaishampayan, Ulka N. ; Mackenzie, Mary ; Wood, Lori ; Donskov, Frede ; Tan, Min Han ; Rha, Sun Young ; Agarwal, Neeraj ; Kollmannsberger, Christian ; Rini, Brian I. ; Choueiri, Toni K. / External validation and comparison with other models of the International Metastatic Renal-Cell Carcinoma Database Consortium prognostic model : A population-based study. In: The Lancet Oncology. 2013 ; Vol. 14, No. 2. pp. 141-148.
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abstract = "Background: The International Metastatic Renal-Cell Carcinoma Database Consortium model offers prognostic information for patients with metastatic renal-cell carcinoma. We tested the accuracy of the model in an external population and compared it with other prognostic models. Methods: We included patients with metastatic renal-cell carcinoma who were treated with first-line VEGF-targeted treatment at 13 international cancer centres and who were registered in the Consortium's database but had not contributed to the initial development of the Consortium Database model. The primary endpoint was overall survival. We compared the Database Consortium model with the Cleveland Clinic Foundation (CCF) model, the International Kidney Cancer Working Group (IKCWG) model, the French model, and the Memorial Sloan-Kettering Cancer Center (MSKCC) model by concordance indices and other measures of model fit. Findings: Overall, 1028 patients were included in this study, of whom 849 had complete data to assess the Database Consortium model. Median overall survival was 18·8 months (95{\%} 17·6-21·4). The predefined Database Consortium risk factors (anaemia, thrombocytosis, neutrophilia, hypercalcaemia, Karnofsky performance status <80{\%}, and <1 year from diagnosis to treatment) were independent predictors of poor overall survival in the external validation set (hazard ratios ranged between 1·27 and 2·08, concordance index 0·71, 95{\%} CI 0·68-0·73). When patients were segregated into three risk categories, median overall survival was 43·2 months (95{\%} CI 31·4-50·1) in the favourable risk group (no risk factors; 157 patients), 22·5 months (18·7-25·1) in the intermediate risk group (one to two risk factors; 440 patients), and 7·8 months (6·5-9·7) in the poor risk group (three or more risk factors; 252 patients; p<0·0001; concordance index 0·664, 95{\%} CI 0·639-0·689). 672 patients had complete data to test all five models. The concordance index of the CCF model was 0·662 (95{\%} CI 0·636-0·687), of the French model 0·640 (0·614-0·665), of the IKCWG model 0·668 (0·645-0·692), and of the MSKCC model 0·657 (0·632-0·682). The reported versus predicted number of deaths at 2 years was most similar in the Database Consortium model compared with the other models. Interpretation: The Database Consortium model is now externally validated and can be applied to stratify patients by risk in clinical trials and to counsel patients about prognosis. Funding: None.",
author = "Heng, {Daniel Y.C.} and Wanling Xie and Regan, {Meredith M.} and Harshman, {Lauren C.} and Bjarnason, {Georg A.} and Vaishampayan, {Ulka N.} and Mary Mackenzie and Lori Wood and Frede Donskov and Tan, {Min Han} and Rha, {Sun Young} and Neeraj Agarwal and Christian Kollmannsberger and Rini, {Brian I.} and Choueiri, {Toni K.}",
year = "2013",
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Heng, DYC, Xie, W, Regan, MM, Harshman, LC, Bjarnason, GA, Vaishampayan, UN, Mackenzie, M, Wood, L, Donskov, F, Tan, MH, Rha, SY, Agarwal, N, Kollmannsberger, C, Rini, BI & Choueiri, TK 2013, 'External validation and comparison with other models of the International Metastatic Renal-Cell Carcinoma Database Consortium prognostic model: A population-based study', The Lancet Oncology, vol. 14, no. 2, pp. 141-148. https://doi.org/10.1016/S1470-2045(12)70559-4

External validation and comparison with other models of the International Metastatic Renal-Cell Carcinoma Database Consortium prognostic model : A population-based study. / Heng, Daniel Y.C.; Xie, Wanling; Regan, Meredith M.; Harshman, Lauren C.; Bjarnason, Georg A.; Vaishampayan, Ulka N.; Mackenzie, Mary; Wood, Lori; Donskov, Frede; Tan, Min Han; Rha, Sun Young; Agarwal, Neeraj; Kollmannsberger, Christian; Rini, Brian I.; Choueiri, Toni K.

In: The Lancet Oncology, Vol. 14, No. 2, 01.02.2013, p. 141-148.

Research output: Contribution to journalArticle

TY - JOUR

T1 - External validation and comparison with other models of the International Metastatic Renal-Cell Carcinoma Database Consortium prognostic model

T2 - A population-based study

AU - Heng, Daniel Y.C.

AU - Xie, Wanling

AU - Regan, Meredith M.

AU - Harshman, Lauren C.

AU - Bjarnason, Georg A.

AU - Vaishampayan, Ulka N.

AU - Mackenzie, Mary

AU - Wood, Lori

AU - Donskov, Frede

AU - Tan, Min Han

AU - Rha, Sun Young

AU - Agarwal, Neeraj

AU - Kollmannsberger, Christian

AU - Rini, Brian I.

AU - Choueiri, Toni K.

PY - 2013/2/1

Y1 - 2013/2/1

N2 - Background: The International Metastatic Renal-Cell Carcinoma Database Consortium model offers prognostic information for patients with metastatic renal-cell carcinoma. We tested the accuracy of the model in an external population and compared it with other prognostic models. Methods: We included patients with metastatic renal-cell carcinoma who were treated with first-line VEGF-targeted treatment at 13 international cancer centres and who were registered in the Consortium's database but had not contributed to the initial development of the Consortium Database model. The primary endpoint was overall survival. We compared the Database Consortium model with the Cleveland Clinic Foundation (CCF) model, the International Kidney Cancer Working Group (IKCWG) model, the French model, and the Memorial Sloan-Kettering Cancer Center (MSKCC) model by concordance indices and other measures of model fit. Findings: Overall, 1028 patients were included in this study, of whom 849 had complete data to assess the Database Consortium model. Median overall survival was 18·8 months (95% 17·6-21·4). The predefined Database Consortium risk factors (anaemia, thrombocytosis, neutrophilia, hypercalcaemia, Karnofsky performance status <80%, and <1 year from diagnosis to treatment) were independent predictors of poor overall survival in the external validation set (hazard ratios ranged between 1·27 and 2·08, concordance index 0·71, 95% CI 0·68-0·73). When patients were segregated into three risk categories, median overall survival was 43·2 months (95% CI 31·4-50·1) in the favourable risk group (no risk factors; 157 patients), 22·5 months (18·7-25·1) in the intermediate risk group (one to two risk factors; 440 patients), and 7·8 months (6·5-9·7) in the poor risk group (three or more risk factors; 252 patients; p<0·0001; concordance index 0·664, 95% CI 0·639-0·689). 672 patients had complete data to test all five models. The concordance index of the CCF model was 0·662 (95% CI 0·636-0·687), of the French model 0·640 (0·614-0·665), of the IKCWG model 0·668 (0·645-0·692), and of the MSKCC model 0·657 (0·632-0·682). The reported versus predicted number of deaths at 2 years was most similar in the Database Consortium model compared with the other models. Interpretation: The Database Consortium model is now externally validated and can be applied to stratify patients by risk in clinical trials and to counsel patients about prognosis. Funding: None.

AB - Background: The International Metastatic Renal-Cell Carcinoma Database Consortium model offers prognostic information for patients with metastatic renal-cell carcinoma. We tested the accuracy of the model in an external population and compared it with other prognostic models. Methods: We included patients with metastatic renal-cell carcinoma who were treated with first-line VEGF-targeted treatment at 13 international cancer centres and who were registered in the Consortium's database but had not contributed to the initial development of the Consortium Database model. The primary endpoint was overall survival. We compared the Database Consortium model with the Cleveland Clinic Foundation (CCF) model, the International Kidney Cancer Working Group (IKCWG) model, the French model, and the Memorial Sloan-Kettering Cancer Center (MSKCC) model by concordance indices and other measures of model fit. Findings: Overall, 1028 patients were included in this study, of whom 849 had complete data to assess the Database Consortium model. Median overall survival was 18·8 months (95% 17·6-21·4). The predefined Database Consortium risk factors (anaemia, thrombocytosis, neutrophilia, hypercalcaemia, Karnofsky performance status <80%, and <1 year from diagnosis to treatment) were independent predictors of poor overall survival in the external validation set (hazard ratios ranged between 1·27 and 2·08, concordance index 0·71, 95% CI 0·68-0·73). When patients were segregated into three risk categories, median overall survival was 43·2 months (95% CI 31·4-50·1) in the favourable risk group (no risk factors; 157 patients), 22·5 months (18·7-25·1) in the intermediate risk group (one to two risk factors; 440 patients), and 7·8 months (6·5-9·7) in the poor risk group (three or more risk factors; 252 patients; p<0·0001; concordance index 0·664, 95% CI 0·639-0·689). 672 patients had complete data to test all five models. The concordance index of the CCF model was 0·662 (95% CI 0·636-0·687), of the French model 0·640 (0·614-0·665), of the IKCWG model 0·668 (0·645-0·692), and of the MSKCC model 0·657 (0·632-0·682). The reported versus predicted number of deaths at 2 years was most similar in the Database Consortium model compared with the other models. Interpretation: The Database Consortium model is now externally validated and can be applied to stratify patients by risk in clinical trials and to counsel patients about prognosis. Funding: None.

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