Prognosticators of Long-Term Outcomes of TNM Stage II Colorectal Cancer: Molecular Patterns or Clinicopathological Features

  • Tai-Chuan Kuan
  • Shih-Ching ChangEmail author
  • Jen-Kou Lin
  • Tzu-Chen Lin
  • Shung-Haur Yang
  • Jeng-Kae Jiang
  • Wei-Shone Chen
  • Huann-Sheng Wang
  • Yuan-Tzu Lan
  • Chun-Chi Lin
  • Hung-Hsin Lin
  • Sheng-Chieh Huang
Original Scientific Report



Patients with stage II colorectal cancer (CRC) have a higher risk of recurrence when they have certain risk factors, including clinical and pathological patterns. However, as the prognostic role of molecular patterns for stage II disease is still unclear, this study aimed to investigate it.


A total of 509 patients with stage II CRC were enrolled, and all clinical, pathological, and molecular data were collected. Molecular patterns included microsatellite instability (MSI); elevated microsatellite alterations at selected tetranucleotides (EMAST) status; and expression of RAS/RAF genes, genes of the APC pathway, and other gene mutations. The endpoints were oncological outcomes, including overall survival (OS), cancer-specific survival (CSS), disease-free survival (DFS), local recurrence (LR), and distant recurrence (DR). Cox regression analysis was used.


Numerous molecular patterns influenced the oncological outcomes on univariate analysis, but no variable reached significance in LR. On multivariate analysis, a mucinous component (MC) > 50% (P < 0.01) was significant for OS and CSS. Lymphovascular invasion (LVI; P< 0.01), MC > 50% (P < 0.01), and EMAST-H (P = 0.02) significantly influenced DFS, whereas LVI (P < 0.01), MC > 50% (P < 0.01), and TP53 mutation (P = 0.02) were significant for DR.


In this study, MSI, EMAST, and RAS/RAF alterations did not influence the oncological outcomes. Overall, LVI and MC were two significant prognostic factors for DFS and DR. Thus, the histopathology, rather than the genes, plays a major role in the prognosis of patients with stage II CRC.


Authors’ contributions

Tai-Chuan Kuan and Shih-Ching Chang drafted/revised this article and analyzed the data. Shih-Ching Chang was involved in conception and design. Jen-Kou Lin, Tzu-Chen Lin, Shung-Haur Yang, Jeng-Kae Jiang, Wei-Shone Chen, Huann-Sheng Wang, Yuan-Tzu Lan, Chun-Chi Lin, Hung-Hsin Lin, and Sheng-Chieh Huang contributed to acquisition of data.

Compliance with ethical standards

Conflict of interest

All authors declare that they have no conflict of interest.


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Copyright information

© Société Internationale de Chirurgie 2019

Authors and Affiliations

  • Tai-Chuan Kuan
    • 1
    • 2
  • Shih-Ching Chang
    • 2
    • 1
    Email author
  • Jen-Kou Lin
    • 1
    • 2
  • Tzu-Chen Lin
    • 1
    • 2
  • Shung-Haur Yang
    • 1
    • 2
    • 3
  • Jeng-Kae Jiang
    • 1
    • 2
  • Wei-Shone Chen
    • 1
    • 2
  • Huann-Sheng Wang
    • 1
    • 2
  • Yuan-Tzu Lan
    • 1
    • 2
  • Chun-Chi Lin
    • 1
    • 2
  • Hung-Hsin Lin
    • 1
    • 2
  • Sheng-Chieh Huang
    • 1
    • 2
  1. 1.Division of Colorectal Surgery, Department of SurgeryTaipei Veteran General HospitalTaipeiTaiwan
  2. 2.Faculty of MedicineNational Yang-Ming UniversityTaipeiTaiwan
  3. 3.National Yang-Ming University HospitalYilanTaiwan

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