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REG Iα is a Reliable Marker of Chemoradiosensitivity in Squamous Cell Esophageal Cancer Patients

  • Thoracic Oncology
  • Published:
Annals of Surgical Oncology Aims and scope Submit manuscript

Abstract

Background

A reliable marker of chemoradiosensitivity that would enable appropriate and individualized treatment of thoracic squamous cell esophageal cancer has long been sought. We investigated whether regenerating gene (REG) Iα is such a marker.

Methods

We assessed expression of REG Iα in untreated endoscopic biopsy specimens and examined the correlation between REG Iα expression and the clinical responses to definitive chemoradiotherapy and prognosis. We also examined the relationship between REG Iα expression in the resected tumor and the prognosis of patients who received esophagectomy for thoracic squamous cell esophageal cancer.

Results

Among the 42 patients treated with definitive chemoradiotherapy, 8 of the 23 REG I-positive patients (35%) showed complete responses to chemoradiotherapy, while only one of the 19 REG I-negative patients did so. The survival rate among the REG I-positive patients was significantly better than among the REG I-negative patients. For the 76 patients treated surgically, there was no significant difference in the survival rates among the REG I-positive and REG I-negative patients.

Conclusions

REG Iα expression in squamous cell esophageal carcinoma may be a reliable marker of chemoradiosensitivity. We anticipate that it will enable us to provide more appropriate and individualized treatment to patients of advanced esophageal squamous cell carcinoma.

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Authors and Affiliations

  1. Department of Surgery, Akita University School of Medicine, 1-1-1 Hondo, Akita, Japan, 010-8543

    Kaori Hayashi MD, Satoru Motoyama MD, PhD, Kiyotomi Maruyama MD, PhD, Yoshihiro Minamiya MD, PhD & Jun-ichi Ogawa MD, PhD

  2. Department of Biochemistry, Akita University School of Medicine, 1-1-1 Hondo, Akita, Japan, 010-8543

    Kaori Hayashi MD, Toshihiro Sugiyama MD, PhD, Souichi Koyota PhD & Yukio Koizumi PhD

  3. Department of Radiology, Akita University School of Medicine, 1-1-1 Hondo, Akita, Japan, 010-8543

    Jun-ichi Izumi MD & Akira Anbai MD, PhD

  4. Department of Pathology, Akita University School of Medicine, 1-1-1 Hondo, Akita, Japan, 010-8543

    Hiroshi Nanjo MD, PhD

  5. Central Research Laboratory, Akita University School of Medicine, 1-1-1 Hondo, Akita, Japan, 010-8543

    Hitoshi Watanabe

  6. Department of Biochemistry, Nara Medical University, Kashihara, Japan

    Shin Takasawa MD, PhD

  7. Department of Environmental Health Sciences, Akita University School of Medicine, 1-1-1 Hondo, Akita, Japan, 010-8543

    Katsuyuki Murata MD, PhD

Authors
  1. Kaori Hayashi MD
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  2. Satoru Motoyama MD, PhD
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  3. Toshihiro Sugiyama MD, PhD
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  4. Jun-ichi Izumi MD
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  5. Akira Anbai MD, PhD
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  6. Hiroshi Nanjo MD, PhD
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  7. Hitoshi Watanabe
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  8. Kiyotomi Maruyama MD, PhD
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  9. Yoshihiro Minamiya MD, PhD
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  10. Souichi Koyota PhD
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  11. Yukio Koizumi PhD
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  12. Shin Takasawa MD, PhD
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  13. Katsuyuki Murata MD, PhD
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  14. Jun-ichi Ogawa MD, PhD
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Corresponding author

Correspondence to Satoru Motoyama MD, PhD.

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Hayashi, K., Motoyama, S., Sugiyama, T. et al. REG Iα is a Reliable Marker of Chemoradiosensitivity in Squamous Cell Esophageal Cancer Patients. Ann Surg Oncol 15, 1224–1231 (2008). https://doi.org/10.1245/s10434-008-9810-8

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  • DOI: https://doi.org/10.1245/s10434-008-9810-8

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