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Kikuchi Y, Shimada H, Yamasaki F, Yamashita T, Araki K, Horimoto K, Yajima S, Yashiro M, Yokoi K, Cho H, Ehira T, Nakahara K, Yasuda H, Isobe K, Hayashida T, Hatakeyama S, Akakura K, Aoki D, Nomura H, Tada Y, Yoshimatsu Y, Miyachi H, Takebayashi C, Hanamura I, Takahashi H. Clinical practice guidelines for molecular tumor marker, 2nd edition review part 2. Int J Clin Oncol 2024; 29:512-534. [PMID: 38493447 DOI: 10.1007/s10147-024-02497-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2024] [Accepted: 02/21/2024] [Indexed: 03/19/2024]
Abstract
In recent years, rapid advancement in gene/protein analysis technology has resulted in target molecule identification that may be useful in cancer treatment. Therefore, "Clinical Practice Guidelines for Molecular Tumor Marker, Second Edition" was published in Japan in September 2021. These guidelines were established to align the clinical usefulness of external diagnostic products with the evaluation criteria of the Pharmaceuticals and Medical Devices Agency. The guidelines were scoped for each tumor, and a clinical questionnaire was developed based on a serious clinical problem. This guideline was based on a careful review of the evidence obtained through a literature search, and recommendations were identified following the recommended grades of the Medical Information Network Distribution Services (Minds). Therefore, this guideline can be a tool for cancer treatment in clinical practice. We have already reported the review portion of "Clinical Practice Guidelines for Molecular Tumor Marker, Second Edition" as Part 1. Here, we present the English version of each part of the Clinical Practice Guidelines for Molecular Tumor Marker, Second Edition.
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Affiliation(s)
| | - Hideaki Shimada
- Department of Clinical Oncology, Toho University, Tokyo, Japan.
- Department of Surgery, Toho University, Tokyo, Japan.
| | - Fumiyuki Yamasaki
- Department of Neurosurgery, Graduate School of Biomedical and Health Sciences, Hiroshima University, Hiroshima, Japan
| | - Taku Yamashita
- Department of Otorhinolaryngology-Head and Neck Surgery, Kitasato University School of Medicine, Kanagawa, Japan
| | - Koji Araki
- Department of Otorhinolaryngology-Head and Neck Surgery, National Defense Medical College, Saitama, Japan
| | - Kohei Horimoto
- Department of Dermatology, Sapporo Medical University School of Medicine, Sapporo, Japan
| | | | - Masakazu Yashiro
- Department of Molecular Oncology and Therapeutics, Osaka Metropolitan University Graduate School of Medicine, Osaka, Japan
| | - Keigo Yokoi
- Department of Lower Gastrointestinal Surgery, Kitasato University School of Medicine, Kanagawa, Japan
| | - Haruhiko Cho
- Department of Surgery, Tokyo Metropolitan Komagome Hospital, Tokyo, Japan
| | - Takuya Ehira
- Department of Gastroenterology, St. Marianna University School of Medicine, Kanagawa, Japan
| | - Kazunari Nakahara
- Department of Gastroenterology, St. Marianna University School of Medicine, Kanagawa, Japan
| | - Hiroshi Yasuda
- Department of Gastroenterology, St. Marianna University School of Medicine, Kanagawa, Japan
| | - Kazutoshi Isobe
- Division of Respiratory Medicine, Department of Internal Medicine (Omori), Toho University, Tokyo, Japan
| | - Tetsu Hayashida
- Department of Surgery, Keio University School of Medicine, Tokyo, Japan
| | - Shingo Hatakeyama
- Department of Urology, Hirosaki University Graduate School of Medicine, Aomori, Japan
| | | | - Daisuke Aoki
- International University of Health and Welfare Graduate School, Tokyo, Japan
| | - Hiroyuki Nomura
- Department of Obstetrics and Gynecology, School of Medicine, Fujita Health University, Aichi, Japan
| | - Yuji Tada
- Department of Pulmonology, School of Medicine, International University of Health and Welfare, Chiba, Japan
| | - Yuki Yoshimatsu
- Department of Patient-Derived Cancer Model, Tochigi Cancer Center Research Institute, Tochigi, Japan
| | - Hayato Miyachi
- Faculty of Clinical Laboratory Sciences, Nitobe Bunka College, Tokyo, Japan
| | - Chiaki Takebayashi
- Division of Hematology and Oncology, Department of Internal Medicine (Omori), Toho University, Tokyo, Japan
| | - Ichiro Hanamura
- Division of Hematology, Department of Internal Medicine, Aichi Medical University, Aichi, Japan
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Suzuki T, Oshima Y, Shiratori F, Nanami T, Yajima S, Sumazaki M, Ushigome M, Sugita H, Eberl M, Ogata H, Hayashida T, Nakamura S, Nakagawa T, Shimada H. Comparison between a new assay system, Elecsys® Anti‑p53, and conventional MESACUP™ for the detection of serum anti‑p53 antibodies: A multi‑institutional study. Mol Clin Oncol 2022; 17:130. [PMID: 35832468 PMCID: PMC9264320 DOI: 10.3892/mco.2022.2563] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/09/2022] [Accepted: 06/06/2022] [Indexed: 11/05/2022] Open
Affiliation(s)
- Takashi Suzuki
- Department of Surgery, School of Medicine, Graduate School of Medicine, Toho University, Tokyo 142‑8541, Japan
| | - Yoko Oshima
- Department of Surgery, School of Medicine, Graduate School of Medicine, Toho University, Tokyo 142‑8541, Japan
| | - Fumiaki Shiratori
- Department of Gastroenterological Surgery, Graduate School of Medicine, Osaka University, Suita, Osaka 565‑0871, Japan
| | - Tatsuki Nanami
- Department of Surgery, School of Medicine, Graduate School of Medicine, Toho University, Tokyo 142‑8541, Japan
| | - Satoshi Yajima
- Department of Surgery, School of Medicine, Graduate School of Medicine, Toho University, Tokyo 142‑8541, Japan
| | - Makoto Sumazaki
- Department of Surgery, School of Medicine, Graduate School of Medicine, Toho University, Tokyo 142‑8541, Japan
| | - Mitsunori Ushigome
- Department of Surgery, School of Medicine, Graduate School of Medicine, Toho University, Tokyo 142‑8541, Japan
| | | | - Magdalena Eberl
- Department of Biostatistics and Advanced Data Analytics, Roche Diagnostics GmbH, Penzberg, D‑82377 Bavaria, Germany
| | - Hideaki Ogata
- Department of Surgery, School of Medicine, Graduate School of Medicine, Toho University, Tokyo 142‑8541, Japan
| | - Tetsu Hayashida
- Department of General and Gastroenterological Surgery, Keio University, Tokyo 160‑8582, Japan
| | - Seigo Nakamura
- Division of Breast Surgical Oncology, Showa University, Tokyo 142‑8666, Japan
| | - Tsuyoshi Nakagawa
- Division of Breast Surgery, Tokyo Medical and Dental University, Tokyo 113‑8519, Japan
| | - Hideaki Shimada
- Department of Surgery, School of Medicine, Graduate School of Medicine, Toho University, Tokyo 142‑8541, Japan
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Takashi S, Satoshi Y, Akihiko O, Naoya Y, Yusuke T, Kentaro M, Yu O, Yasuaki N, Koichi Y, Takashi F, Ryo O, Isamu H, Chikara K, Kosuke N, Yasuhiro T, Kazuhiko Y, Hideaki S. Clinical impact of preoperative serum p53 antibody titers in 1487 patients with surgically treated esophageal squamous cell carcinoma: a multi-institutional study. Esophagus 2021; 18:65-71. [PMID: 32715348 DOI: 10.1007/s10388-020-00761-6] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/29/2020] [Accepted: 07/17/2020] [Indexed: 02/03/2023]
Abstract
BACKGROUND Although the clinicopathological significance of serum p53 antibodies (s-p53-Abs) in esophageal cancer have been evaluated previously, previous reports only analyzed around 100-200 patients. This study was a multi-institutional study promoted by the Japan Esophageal Society to evaluate the clinical significance of preoperative s-p53-Ab status and antibody titers in 1487 esophageal cancer patients without neoadjuvant therapy. METHODS A total of 1487 patients with esophageal squamous cell carcinoma surgically treated between 2008 and 2016 in 15 hospitals in Japan were enrolled. The cut-off value to classify the patients into s-p53-Ab positive and negative groups was 1.30 U/ml. A receiver operating characteristic curve was constructed to assess the s-p53-Abs cut-off levels to differentiate poor prognosis among the s-p53-Ab positive group. Univariate and multivariate analyses were used to evaluate the clinicopathological and prognostic significance of s-p53-Ab status and titers. RESULTS Although s-p53-Ab status was significantly associated with tumor depth (P = 0.002), nodal status (P = 0.027), and pathological stage (P = 0.002). The s-p53-Ab positive status was not significantly associated with poor overall survival (P = 0.699). Using 9.82 U/ml as a cut-off, the high s-p53-Ab titer group showed a significantly worse overall survival than the low s-p53-Ab titer group (P = 0.038). However, the difference was not significant in the multivariate analysis. CONCLUSION The presence of s-p53-Abs was associated with tumor progression. Although high s-p53-Ab titers more than 9.82 U/ml, might be associated with poor prognosis for patients with esophageal squamous cell carcinoma, it was not an independent risk factor.
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Affiliation(s)
- Suzuki Takashi
- Japan Esophageal Society Promotion Research: p53 Antibody Multicenter Research Group, Tokyo, Japan
| | - Yajima Satoshi
- Japan Esophageal Society Promotion Research: p53 Antibody Multicenter Research Group, Tokyo, Japan
| | - Okamura Akihiko
- Japan Esophageal Society Promotion Research: p53 Antibody Multicenter Research Group, Tokyo, Japan
| | - Yoshida Naoya
- Japan Esophageal Society Promotion Research: p53 Antibody Multicenter Research Group, Tokyo, Japan
| | - Taniyama Yusuke
- Japan Esophageal Society Promotion Research: p53 Antibody Multicenter Research Group, Tokyo, Japan
| | - Murakami Kentaro
- Japan Esophageal Society Promotion Research: p53 Antibody Multicenter Research Group, Tokyo, Japan
| | - Ohkura Yu
- Japan Esophageal Society Promotion Research: p53 Antibody Multicenter Research Group, Tokyo, Japan
| | - Nakajima Yasuaki
- Japan Esophageal Society Promotion Research: p53 Antibody Multicenter Research Group, Tokyo, Japan
| | - Yagi Koichi
- Japan Esophageal Society Promotion Research: p53 Antibody Multicenter Research Group, Tokyo, Japan
| | - Fukuda Takashi
- Japan Esophageal Society Promotion Research: p53 Antibody Multicenter Research Group, Tokyo, Japan
| | - Ogawa Ryo
- Japan Esophageal Society Promotion Research: p53 Antibody Multicenter Research Group, Tokyo, Japan
| | - Hoshino Isamu
- Japan Esophageal Society Promotion Research: p53 Antibody Multicenter Research Group, Tokyo, Japan
| | - Kunisaki Chikara
- Japan Esophageal Society Promotion Research: p53 Antibody Multicenter Research Group, Tokyo, Japan
| | - Narumiya Kosuke
- Japan Esophageal Society Promotion Research: p53 Antibody Multicenter Research Group, Tokyo, Japan
| | - Tsubosa Yasuhiro
- Japan Esophageal Society Promotion Research: p53 Antibody Multicenter Research Group, Tokyo, Japan
| | - Yamada Kazuhiko
- Japan Esophageal Society Promotion Research: p53 Antibody Multicenter Research Group, Tokyo, Japan
| | - Shimada Hideaki
- Japan Esophageal Society Promotion Research: p53 Antibody Multicenter Research Group, Tokyo, Japan.
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Yajima S, Suzuki T, Oshima Y, Shiratori F, Funahashi K, Kawai S, Nanki T, Muraoka S, Urita Y, Saida Y, Okazumi S, Kitagawa Y, Hirata Y, Hasegawa H, Okabayashi K, Murakami M, Yamashita T, Kato R, Matsubara H, Murakami K, Nakajima Y, Sugita H, Klammer M, Shimada H. New Assay System Elecsys Anti-p53 to Detect Serum Anti-p53 Antibodies in Esophageal Cancer Patients and Colorectal Cancer Patients: Multi-institutional Study. Ann Surg Oncol 2020; 28:4007-4015. [PMID: 33210269 DOI: 10.1245/s10434-020-09342-4] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2020] [Accepted: 10/20/2020] [Indexed: 11/18/2022]
Abstract
BACKGROUND Several recent studies suggest that serum anti-p53 antibodies (s-p53-Abs) may be combined with other markers to detect esophageal and colorectal cancer. In this study, we assessed the sensitivity and specificity of s-p53-Abs detection of a new electrochemiluminescence immunoassay (ECLIA; Elecsys anti-p53). METHODS Elecsys anti-p53 assay was used to analyze the level of s-p53-Abs in blood sera from patients with esophageal or colorectal cancer taken before treatment. Control blood sera from healthy volunteers, patients with benign diseases, and patients with autoimmune diseases served as a reference. In addition, squamous cell carcinoma antigen (SCC-Ag) and cytokeratin 19 fragments (CYFRA21-1) were assessed in patients with esophageal cancer, and carcinoembryonic antigen (CEA) and carbohydrate antigen (CA) 19-9 were assessed in patients with colorectal cancer. RESULTS Samples from 281 patients with esophageal cancer, 232 patients with colorectal cancer, and 532 controls were included in the study. The median value of s-p53-Abs in control samples was < 0.02 μg/mL (range < 0.02-29.2 μg/mL). Assuming 98% specificity, the cut-off value was determined as 0.05 μg/mL. s-p53-Abs were detected in 20% (57/281) of patients with esophageal cancer and 18% (42/232) of patients with colorectal cancer. In combination with SCC-Ag and CEA, respectively, s-p53-Abs detected 51% (144/281) of patients with esophageal and 53% (124/232) of patients with colorectal cancer. CONCLUSIONS The new s-p53-Abs assay Elecsys anti-p53 was useful in detecting esophageal and colorectal cancers with high specificity. Adding s-p53-Abs to conventional markers significantly improved the overall detection rates.
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Affiliation(s)
- Satoshi Yajima
- Department of Surgery, School of Medicine, Toho University, Tokyo, Japan
| | - Takashi Suzuki
- Department of Surgery, School of Medicine, Toho University, Tokyo, Japan
| | - Yoko Oshima
- Department of Surgery, School of Medicine, Toho University, Tokyo, Japan
| | - Fumiaki Shiratori
- Department of Surgery, School of Medicine, Toho University, Tokyo, Japan
| | - Kimihiko Funahashi
- Department of Surgery, School of Medicine, Toho University, Tokyo, Japan
| | - Shinichi Kawai
- Department of Inflammation and Pain Control Research, School of Medicine, Toho University, Tokyo, Japan
| | - Toshihiro Nanki
- Division of Rheumatology, Department of Internal Medicine, School of Medicine, Toho University, Tokyo, Japan
| | - Sei Muraoka
- Division of Rheumatology, Department of Internal Medicine, School of Medicine, Toho University, Tokyo, Japan
| | - Yoshihisa Urita
- General Medicine and Emergency Center, School of Medicine, Toho University, Tokyo, Japan
| | - Yoshihisa Saida
- Department of Surgery, Ohashi Medical Center, Toho University, Tokyo, Japan
| | - Shinichi Okazumi
- Department of Surgery, Sakura Medical Center, Toho University, Tokyo, Japan
| | - Yuko Kitagawa
- Department of General and Gastroenterological Surgery, Keio University Hospital, Tokyo, Japan
| | - Yuki Hirata
- Department of General and Gastroenterological Surgery, Keio University Hospital, Tokyo, Japan
| | - Hirotoshi Hasegawa
- Department of General and Gastroenterological Surgery, Keio University Hospital, Tokyo, Japan
| | - Koji Okabayashi
- Department of General and Gastroenterological Surgery, Keio University Hospital, Tokyo, Japan
| | | | | | - Rei Kato
- Department of Surgery, Showa University Hospital, Tokyo, Japan
| | - Hisahiro Matsubara
- Department of Frontier Surgery, Graduate School of Medicine, Chiba University, Chiba, Japan
| | - Kentaro Murakami
- Department of Frontier Surgery, Graduate School of Medicine, Chiba University, Chiba, Japan
| | - Yasuaki Nakajima
- Esophageal Surgery, Medical Hospital, Tokyo Medical and Dental University, Tokyo, Japan
| | | | - Martin Klammer
- Department of Biostatistics and Advanced Data Analytics, Roche Diagnostics GmbH, Penzberg, Germany
| | - Hideaki Shimada
- Department of Surgery, School of Medicine, Toho University, Tokyo, Japan. .,Department of Gastroenterological Surgery and Clinical Oncology, Graduate School of Medicine, Toho University, Tokyo, Japan.
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Suzuki T, Yajima S, Ishioka N, Nanami T, Oshima Y, Washizawa N, Funahashi K, Otsuka S, Nemoto T, Shimada H. Prognostic significance of high serum p53 antibody titers in patients with esophageal squamous cell carcinoma. Esophagus 2018; 15:294-300. [PMID: 29959634 DOI: 10.1007/s10388-018-0629-5] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/04/2018] [Accepted: 06/20/2018] [Indexed: 02/03/2023]
Abstract
BACKGROUND The p53 protein overexpression that usually results from genetic alterations reportedly induces serum antibodies against p53. However, little information is available about the prognostic significance of perioperative serum p53 antibody (s-p53-Abs) titers in patients with esophageal squamous cell carcinoma. METHODS In this study, we retrospectively evaluated the clinical significance of perioperative s-p53-Abs in 135 patients with esophageal squamous cell carcinoma. Of these, 58 patients received neoadjuvant chemotherapy comprising 5-FU and CDDP. While the cutoff level at 1.3 U/ml indicated seropositive patients, level of 13.4 U/ml was used to identify high-titer patients. We monitored serum titers seropositive patients after surgery and evaluated the prognostic significance by the univariate and multivariate analyses. RESULTS In this study, 29 patients (21.5%) were positive for s-p53-Abs before treatment. The frequency of both seropositive patients and high-titer patients (> 13.4 U/ml) was not significantly associated with tumor progression. While seropositive patients did not demonstrate significant poor overall survival, high-titer patients demonstrated significant poor overall survival based on the multivariate analysis (P < 0.001). Moreover, the s-p53-Abs titer did not correlate with the response to neoadjuvant chemotherapy. Among seropositive patients, the negative conversion of s-p53-Abs more likely led to be long-term survival. CONCLUSIONS This study determined that the high-titer of s-p53-Abs was an independent risk factor to reduce the overall survival of patients with esophageal cancer patients. The negative conversion of s-p53-Abs could be a good indicator of favorable prognosis.
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Affiliation(s)
- Takashi Suzuki
- Department of Surgery, School of Medicine, Toho University, 6-11-1 Omori-nishi, Ota-ku, Tokyo, 142-8541, Japan
| | - Satoshi Yajima
- Department of Surgery, School of Medicine, Toho University, 6-11-1 Omori-nishi, Ota-ku, Tokyo, 142-8541, Japan
| | - Nobuki Ishioka
- Department of Surgery, School of Medicine, Toho University, 6-11-1 Omori-nishi, Ota-ku, Tokyo, 142-8541, Japan
- Department of Clinical Oncology, Graduate School of Medicine, Toho University, Tokyo, Japan
| | - Tatsuki Nanami
- Department of Surgery, School of Medicine, Toho University, 6-11-1 Omori-nishi, Ota-ku, Tokyo, 142-8541, Japan
| | - Yoko Oshima
- Department of Surgery, School of Medicine, Toho University, 6-11-1 Omori-nishi, Ota-ku, Tokyo, 142-8541, Japan
| | - Naohiro Washizawa
- Department of Surgery, School of Medicine, Toho University, 6-11-1 Omori-nishi, Ota-ku, Tokyo, 142-8541, Japan
| | - Kimihiko Funahashi
- Department of Surgery, School of Medicine, Toho University, 6-11-1 Omori-nishi, Ota-ku, Tokyo, 142-8541, Japan
| | - Seiko Otsuka
- Department of Surgery, School of Medicine, Toho University, 6-11-1 Omori-nishi, Ota-ku, Tokyo, 142-8541, Japan
| | - Tetsuo Nemoto
- Department of Pathology, School of Medicine, Toho University, Tokyo, Japan
| | - Hideaki Shimada
- Department of Surgery, School of Medicine, Toho University, 6-11-1 Omori-nishi, Ota-ku, Tokyo, 142-8541, Japan.
- Department of Clinical Oncology, Graduate School of Medicine, Toho University, Tokyo, Japan.
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Shimada H. p53 molecular approach to diagnosis and treatment of esophageal squamous cell carcinoma. Ann Gastroenterol Surg 2018; 2:266-273. [PMID: 30003189 PMCID: PMC6036386 DOI: 10.1002/ags3.12179] [Citation(s) in RCA: 34] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/28/2018] [Accepted: 05/04/2018] [Indexed: 01/20/2023] Open
Abstract
We reviewed our research concerning p53 molecules in esophageal squamous cell carcinoma by focusing on the p53 molecular diagnosis and treatment of esophageal squamous cell carcinoma. First, we developed diagnostic tools to analyze serum p53 autoantibodies to detect esophageal squamous cell carcinoma. Positive rate was around 25% to 30% in all patients and around 20% even in stage I patients. Presence of serum p53 antibodies was significantly associated with overexpression of p53 protein in tumor cells. Seropositive patients were more likely than seronegative patients to be resistant to chemotherapy. Monitoring of the titer of serum p53 autoantibodies was useful in predicting patients at high risk of recurrence and/or treatment response. Second, using Ad5CMV-p53 for 10 patients with advanced esophageal squamous cell carcinoma, we carried out a phase I/II study of adenoviral-mediated p53 gene therapy. Although no complete response was observed, local tumor was stabilized in nine patients. No serious adverse events related to Ad5CMV-p53 were observed in these patients. One patient survived for over 5 years after the start of p53 gene therapy. Intratumoral injection of Ad5CMV-p53 is therefore safe, feasible, and biologically active when given in multiple doses to patients with esophageal squamous cell carcinoma. Our observations from these clinical studies indicate that p53 is a useful molecular target both in the diagnosis and in the treatment of esophageal squamous cell carcinoma.
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Affiliation(s)
- Hideaki Shimada
- Department of SurgeryToho University Graduate School of MedicineTokyoJapan
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Five-year postsurgical monitoring of serum p53 antibody for locally advanced esophageal squamous cell carcinoma. Clin J Gastroenterol 2018; 11:278-281. [PMID: 29497977 DOI: 10.1007/s12328-018-0839-3] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/10/2018] [Accepted: 02/19/2018] [Indexed: 10/17/2022]
Abstract
Serum p53 antibody (s-p53-Ab) titers were postoperatively monitored for over 5 years in a 67-year-old man with locally advanced esophageal squamous cell carcinoma. The tumor stage was classified as clinical stage II (cT3N0M0). Serum SCC antigen (s-SCC-Ag; 6.2 ng/mL) and s-p53-Ab (3.83 U/mL) were noted to be positive before surgery. Radical esophagectomy with three-field lymph node dissection was performed without neoadjuvant therapy. Pathological findings of the surgically resected specimens revealed a stage II tumor (pT3N0M0). Postoperatively, the patients did not receive any adjuvant therapy. Although the s-SCC-Ag was found to be negative at 2 months postoperatively, s-SCC-Ag was found to be six times positive despite no signs of recurrence. The s-p53-Ab titers constantly decreased to less than the cutoff value at 6 months postoperatively and continuously decreased over 5 years postoperatively. Finally, s-p53-Ab titers became less than the detection limit value at 60 months postoperatively. No recurrence was observed throughout the postoperative course. This case report is the first to describe the five-year monitoring of postoperative changes in s-p53-Ab titers in a patient with locally advanced esophageal squamous cell carcinoma without recurrence. s-p53-Ab titers seemed to be more useful than s-SCC-Ag for disease monitoring in this case.
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