Evaluation of peri-operative chemotherapy using a prognostic nomogram for survival after resection of colorectal liver metastases.

Published

Journal Article

INTRODUCTION: Nomograms are statistical tools designed to predict outcomes. This study evaluates the effects of peri-operative chemotherapy on the accuracy of a prognostic nomogram for disease-specific survival (DSS) after resection of colorectal liver metastases (CRLM) established at Memorial-Sloan Kettering Cancer Center (MSKCC). METHODS: An external cohort of 203 patients who underwent resection of CRLM between 1996 and 2006 was used to assess the nomogram. RESULTS: After median follow-up of 30.4 months (range 0.33-150), Kaplan-Meier (KM) estimates for 3-, 5- and 8-year post-resection DSS were 56%, 41%, and 32%, respectively; similar to nomogram-predicted probabilities for DSS. The concordance index for the nomogram was higher (0.602) than for the Fong colorectal risk score (CRS; 0.533). KM DSS was longer for patients (n= 50) treated with at least 6 months of peri-operative irinotecan or oxaliplatin compared with all other patients (median 66 vs. 40 months, P= 0.06). KM DSS was greater than nomogram predicted DSS for treated patients and less than nomogram predicted DSS for all other patients. CONCLUSIONS: The CRLM nomogram was validated by an external cohort and more accurately predicted post-resection survival than the commonly used CRS. Differences in observed and nomogram-predicted survival may reflect the effect of treatment factors, such as peri-operative chemotherapy.

Full Text

Cited Authors

  • Reddy, SK; Kattan, MW; Yu, C; Ceppa, EP; de la Fuente, SG; Fong, Y; Clary, BM; White, RR

Published Date

  • November 2009

Published In

Volume / Issue

  • 11 / 7

Start / End Page

  • 592 - 599

PubMed ID

  • 20495712

Pubmed Central ID

  • 20495712

Electronic International Standard Serial Number (EISSN)

  • 1477-2574

International Standard Serial Number (ISSN)

  • 1365-182X

Digital Object Identifier (DOI)

  • 10.1111/j.1477-2574.2009.00106.x

Language

  • eng