Jung-Soo Pyo; Nae Yu Kim; Won Jin Cho

doi:10.4132/jptm.2019.09.27

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Letter to the Editor Response to Comment on “Prognostic Role of Claudin-1 Immunohistochemistry in Malignant Solid Tumors: A Meta-Analysis”: Jung-Soo Pyo, Nae Yu Kim¹, Won Jin Cho^,2; Journal of Pathology and Translational Medicine 2019;53(6):412-414.
DOI: https://doi.org/10.4132/jptm.2019.09.27
Published online: November 15, 2019

Department of Pathology, Eulji University Hospital, Eulji University School of Medicine, Daejeon, Korea

¹Department of Internal Medicine, Eulji University Hospital, Eulji University School of Medicine, Daejeon, Korea

²Department of Urology, Chosun University Hospital, Chosun University School of Medicine, Gwangju, Korea

Corresponding Author: Won Jin Cho, MD Department of Urology, Chosun Universtity Hospital, Chosun University School of Medicine, 365 Pilmun-daero, Dong-gu, Gwangju 61453, Korea Tel: +82-62-220-3210, Fax: +82-62-232-3210, E-mail: uro2097@gmail.com

• Received: September 23, 2019 • Accepted: September 26, 2019

This is an Open Access article distributed under the terms of the Creative Commons Attribution Non-Commercial License (http://creativecommons.org/licenses/by-nc/4.0) which permits unrestricted non-commercial use, distribution, and reproduction in any medium, provided the original work is properly cited.

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NOTES
REFERENCES

This study aimed to elucidate the prognostic roles of claudin-1 immunohistochemistry in various malignant tumors through a meta-analysis. Data from all included studies were extracted by two independent authors (J.S.P. and N.Y.K.). Any disagreements for extracting data were resolved by consensus. In the present study, to review more articles, we used the narrow exclusion criteria. Therefore, discordance for the literature collection did not occur. We assessed the risk of bias for all included studies according to the Newcastle-Ottawa Scale. The detailed information was shown in Table 1. All data for survivals were a 5-year survival rate. If the extractable data only included the survival curve, survival rates at 5-year were obtained from the survival curve.

Conflicts of Interest

The authors declare that they have no potential conflicts of interest.

Table 1.

The Newcastle-Ottawa Scale for the quality assessment of eligible studies

Study	Selection				Comparability	Outcome			Score
Study	Representativeness of the exposed cohort	Selection of the non-exposed cohort	Ascertainment of exposure	Demonstration that outcome of interest was not present at start of study	Comparability of cohorts on the basis of the design or analysis	Assessment of outcome	Was follow-up long enough for outcomes to occur	Adequacy of follow-up of cohorts	Score
Ma et al. (2014) [1]	NA	NA	NA	*	*	*	*	*	5
Morohashi et al. (2007) [2]	NA	NA	NA	*	*	*	*	*	5
Matsuoka et al. (2011) [3]	NA	NA	NA	*	*	*	*	*	5
Resnick et al. (2005) [4]	NA	NA	NA	*	–	*	*	*	4
Shibutani et al. (2013) [5]	NA	NA	NA	*	*	*	*	*	5
Yoshida et al. (2011) [6]	NA	NA	NA	*	*	*	*	*	5
Miyamoto et al. (2008) [7]	NA	NA	NA	*	*	*	*	*	5
Xiong et al. (2011) [8]	NA	NA	NA	*	*	*	*	*	5
Li et al. (2015) [9]	NA	NA	NA	*	*	*	*	*	5
Sappayatosok and Phattarataratip (2015) [10]	NA	NA	NA	*	*	*	*	*	5
Fritzsche et al. (2008) [11]	NA	NA	NA	*	*	*	*	*	5
Shin et al. (2011) [12]	NA	NA	NA	*	*	*	*	*	5
Bouchagier et al. (2014) [13]	NA	NA	NA	*	*	*	*	*	5
Higashi et al. (2007) [14]	NA	NA	NA	*	-	*	*	*	4
Chae et al. (2014) [15]	NA	NA	NA	*	-	*	*	*	4
Chao et al. (2009) [16]	NA	NA	NA	*	-	*	*	*	4
Merikallio et al. (2011) [17]	NA	NA	NA	*	*	*	*	*	5
Zhang et al. (2013) [18]	NA	NA	NA	*	*	*	*	*	5
Huang et al. (2014) [19]	NA	NA	NA	*	*	*	*	*	5
Jung et al. (2011) [20]	NA	NA	NA	*	*	*	*	*	5
Tzelepi et al. (2008) [21]	NA	NA	NA	*	*	*	*	*	5
Hoellen et al. (2017) [22]	NA	NA	NA	*	*	*	*	*	5

NA, not available; *, criteria satisfied; –, criteria not satisfied.

REFERENCES

1. Ma F, Ding X, Fan Y, et al. A CLDN1-negative phenotype predicts poor prognosis in triple-negative breast cancer. PLoS One 2014; 9: e112765. PubMed PMC
2. Morohashi S, Kusumi T, Sato F, et al. Decreased expression of claudin-1 correlates with recurrence status in breast cancer. Int J Mol Med 2007; 20: 139-43. Article PubMed
3. Matsuoka T, Mitomi H, Fukui N, et al. Cluster analysis of claudin-1 and -4, E-cadherin, and beta-catenin expression in colorectal cancers. J Surg Oncol 2011; 103: 674-86. PubMed
4. Resnick MB, Konkin T, Routhier J, Sabo E, Pricolo VE. Claudin-1 is a strong prognostic indicator in stage II colonic cancer: a tissue microarray study. Mod Pathol 2005; 18: 511-8. Article PubMed PDF
5. Shibutani M, Noda E, Maeda K, Nagahara H, Ohtani H, Hirakawa K. Low expression of claudin-1 and presence of poorly-differentiated tumor clusters correlate with poor prognosis in colorectal cancer. Anticancer Res 2013; 33: 3301-6. PubMed
6. Yoshida T, Kinugasa T, Akagi Y, et al. Decreased expression of claudin-1 in rectal cancer: a factor for recurrence and poor prognosis. Anticancer Res 2011; 31: 2517-25. PubMed
7. Miyamoto K, Kusumi T, Sato F, et al. Decreased expression of claudin-1 is correlated with recurrence status in esophageal squamous cell carcinoma. Biomed Res 2008; 29: 71-6. PubMed
8. Xiong L, Wen Y, Miao X, Yang Z. Expressions of cell junction regulatory proteins and their association with clinicopathologic parameters in benign and malignant gallbladder lesions. Am J Med Sci 2011; 342: 388-94. PubMed
9. Li WJ, Zhang ZL, Yu XM, Cai XL, Pan XL, Yang XY. Expression of claudin-1 and its relationship with lymphatic microvessel generation in hypopharyngeal squamous cell carcinoma. Genet Mol Res 2015; 14: 11814-26. PubMed PDF
10. Sappayatosok K, Phattarataratip E. Overexpression of claudin-1 is associated with Advanced clinical stage and invasive pathologic characteristics of oral Squamous Cell Carcinoma. Head Neck Pathol 2015; 9: 173-80. PubMed PDF
11. Fritzsche FR, Oelrich B, Johannsen M, et al. Claudin-1 protein expression is a prognostic marker of patient survival in renal cell carcinomas. Clin Cancer Res 2008; 14: 7035-42. PubMed
12. Shin HI, Kim BH, Chang HS, Kim CI, Jung HR, Park CH. Expression of claudin-1 and -7 in clear cell renal cell carcinoma and its clinical significance. Korean J Urol 2011; 52: 317-22. PubMed PMC
13. Bouchagier KA, Assimakopoulos SF, Karavias DD, et al. Expression of claudins-1, -4, -5, -7 and occludin in hepatocellular carcinoma and their relation with classic clinicopathological features and patients’ survival. In Vivo 2014; 28: 315-26. PubMed
14. Higashi Y, Suzuki S, Sakaguchi T, et al. Loss of claudin-1 expression correlates with malignancy of hepatocellular carcinoma. J Surg Res 2007; 139: 68-76. PubMed
15. Chae MC, Park CK, Keum DY, Hwang I, Kwon KY, Jang BC. Prognostic significance of claudin 4 in completely resected adenocarcinoma of the lung. Korean J Thorac Cardiovasc Surg 2014; 47: 262-8. PubMed PMC PDF
16. Chao YC, Pan SH, Yang SC, et al. Claudin-1 is a metastasis suppressor and correlates with clinical outcome in lung adenocarcinoma. Am J Respir Crit Care Med 2009; 179: 123-33. PubMed
17. Merikallio H, Kaarteenaho R, Pääkkö P, et al. Impact of smoking on the expression of claudins in lung carcinoma. Eur J Cancer 2011; 47: 620-30. PubMed
18. Zhang Z, Wang A, Sun B, Zhan Z, Chen K, Wang C. Expression of CLDN1 and CLDN10 in lung adenocarcinoma in situ and invasive lepidic predominant adenocarcinoma. J Cardiothorac Surg 2013; 8: 95.PubMed PMC PDF
19. Huang J, Li J, Qu Y, et al. The expression of claudin 1 correlates with beta-catenin and is a prognostic factor of poor outcome in gastric cancer. Int J Oncol 2014; 44: 1293-301. PubMed
20. Jung H, Jun KH, Jung JH, Chin HM, Park WB. The expression of claudin-1, claudin-2, claudin-3, and claudin-4 in gastric cancer tissue. J Surg Res 2011; 167: e185-91. PubMed
21. Tzelepi VN, Tsamandas AC, Vlotinou HD, Vagianos CE, Scopa CD. Tight junctions in thyroid carcinogenesis: diverse expression of claudin-1, claudin-4, claudin-7 and occludin in thyroid neoplasms. Mod Pathol 2008; 21: 22-30. PubMed PDF
22. Hoellen F, Waldmann A, Banz-Jansen C, et al. Claudin-1 expression in cervical cancer. Mol Clin Oncol 2017; 7: 880-4. PubMed PMC

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Response to Comment on “Prognostic Role of Claudin-1 Immunohistochemistry in Malignant Solid Tumors: A Meta-Analysis”

J Pathol Transl Med. 2019;53(6):412-414. Published online November 1, 2019

DOI: https://doi.org/10.4132/jptm.2019.09.27

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Response to Comment on “Prognostic Role of Claudin-1 Immunohistochemistry in Malignant Solid Tumors: A Meta-Analysis”

Study	Selection				Comparability	Outcome			Score
Study	Representativeness of the exposed cohort	Selection of the non-exposed cohort	Ascertainment of exposure	Demonstration that outcome of interest was not present at start of study	Comparability of cohorts on the basis of the design or analysis	Assessment of outcome	Was follow-up long enough for outcomes to occur	Adequacy of follow-up of cohorts	Score
Ma et al. (2014) [1]	NA	NA	NA	*	*	*	*	*	5
Morohashi et al. (2007) [2]	NA	NA	NA	*	*	*	*	*	5
Matsuoka et al. (2011) [3]	NA	NA	NA	*	*	*	*	*	5
Resnick et al. (2005) [4]	NA	NA	NA	*	–	*	*	*	4
Shibutani et al. (2013) [5]	NA	NA	NA	*	*	*	*	*	5
Yoshida et al. (2011) [6]	NA	NA	NA	*	*	*	*	*	5
Miyamoto et al. (2008) [7]	NA	NA	NA	*	*	*	*	*	5
Xiong et al. (2011) [8]	NA	NA	NA	*	*	*	*	*	5
Li et al. (2015) [9]	NA	NA	NA	*	*	*	*	*	5
Sappayatosok and Phattarataratip (2015) [10]	NA	NA	NA	*	*	*	*	*	5
Fritzsche et al. (2008) [11]	NA	NA	NA	*	*	*	*	*	5
Shin et al. (2011) [12]	NA	NA	NA	*	*	*	*	*	5
Bouchagier et al. (2014) [13]	NA	NA	NA	*	*	*	*	*	5
Higashi et al. (2007) [14]	NA	NA	NA	*	-	*	*	*	4
Chae et al. (2014) [15]	NA	NA	NA	*	-	*	*	*	4
Chao et al. (2009) [16]	NA	NA	NA	*	-	*	*	*	4
Merikallio et al. (2011) [17]	NA	NA	NA	*	*	*	*	*	5
Zhang et al. (2013) [18]	NA	NA	NA	*	*	*	*	*	5
Huang et al. (2014) [19]	NA	NA	NA	*	*	*	*	*	5
Jung et al. (2011) [20]	NA	NA	NA	*	*	*	*	*	5
Tzelepi et al. (2008) [21]	NA	NA	NA	*	*	*	*	*	5
Hoellen et al. (2017) [22]	NA	NA	NA	*	*	*	*	*	5

Table 1. The Newcastle-Ottawa Scale for the quality assessment of eligible studies

NA, not available; *, criteria satisfied; –, criteria not satisfied.