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Related Concept Videos

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  3. Research Domains
  5. Biomedical And Clinical Sciences
  7. Oncology And Carcinogenesis
  9. Predictive And Prognostic Markers
  11. Modified Neoadjuvant Rectal Score As A Novel Prognostic Model For Rectal Cancer Patients Who Underwent Chemoradiotherapy.
  1. Home
  3. Research Domains
  5. Biomedical And Clinical Sciences
  7. Oncology And Carcinogenesis
  9. Predictive And Prognostic Markers
  11. Modified Neoadjuvant Rectal Score As A Novel Prognostic Model For Rectal Cancer Patients Who Underwent Chemoradiotherapy.

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Modified neoadjuvant rectal score as a novel prognostic model for rectal cancer patients who underwent chemoradiotherapy.

Kazushige Kawai1, Kosuke Ozaki2, Daisuke Nakano3

  • 1Department of Colorectal Surgery, Tokyo Metropolitan Cancer and Infectious Diseases Center, Komagome Hospital, Honkomagome 3-18-22, Bunkyo-ku, Tokyo, 113-8677, Japan. kz-kawai@mvd.biglobe.ne.jp.

International Journal of Clinical Oncology
|April 9, 2024

View abstract on PubMed

Summary
This summary is machine-generated.

A new prognostic model combining apoptosis assessment and the neoadjuvant rectal score (NAR score) improves predictions for rectal cancer patients after neoadjuvant chemoradiotherapy, outperforming traditional TNM staging.

Keywords:
ApoptosisChemoradiotherapyNeoadjuvant rectal scorePrognosis

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Area of Science:

  • Oncology
  • Pathology
  • Surgical Oncology

Background:

  • The neoadjuvant rectal score (NAR score) shows promise over TNM staging for rectal cancer post-neoadjuvant chemoradiotherapy.
  • Apoptosis-detection techniques can assess residual tumor viability after chemoradiotherapy.

Purpose of the Study:

  • To develop an improved prognostic classification for rectal cancer.
  • To combine the NAR score with apoptosis assessment of residual cancer cells.

Main Methods:

  • Retrospective analysis of 319 rectal cancer patients.
  • Comparison of four prognostic models: TNM, NAR score, modified TNM, and modified NAR score.
  • Evaluation based on recurrence-free and overall survival, C-index, and Akaike's information criterion.
Rectal cancer

Main Results:

  • The modified NAR score demonstrated the highest C-index (0.715 for recurrence-free survival, 0.767 for overall survival).
  • The modified NAR score had the smallest Akaike's information criterion (926.2 for recurrence-free survival, 383.9 for overall survival).
  • Downstaging was observed in 15.5% of ypT stages and 4.5% of ypN stages.

Conclusions:

  • A novel prognostic model integrating apoptosis-detecting immunohistochemistry and NAR scores was established.
  • This modified NAR score offers superior prognostic capability for rectal cancer patients undergoing neoadjuvant chemoradiotherapy.