Keika Zen

643 total citations
17 papers, 499 citations indexed

About

Keika Zen is a scholar working on Molecular Biology, Pulmonary and Respiratory Medicine and Genetics. According to data from OpenAlex, Keika Zen has authored 17 papers receiving a total of 499 indexed citations (citations by other indexed papers that have themselves been cited), including 10 papers in Molecular Biology, 6 papers in Pulmonary and Respiratory Medicine and 5 papers in Genetics. Recurrent topics in Keika Zen's work include Gastric Cancer Management and Outcomes (5 papers), Genomic variations and chromosomal abnormalities (4 papers) and Metastasis and carcinoma case studies (3 papers). Keika Zen is often cited by papers focused on Gastric Cancer Management and Outcomes (5 papers), Genomic variations and chromosomal abnormalities (4 papers) and Metastasis and carcinoma case studies (3 papers). Keika Zen collaborates with scholars based in Japan, United Kingdom and United States. Keika Zen's co-authors include David H. Bechhofer, Masafumi Taniwaki, Yoshito Itoh, Takeshi Okanoue, Kohichiroh Yasui, Yasuyuki Gen, Shigeki Arii, Osamu Dohi, Yoh Zen and Yasuni Nakanuma and has published in prestigious journals such as Oncogene, Journal of Bacteriology and Cancer Letters.

In The Last Decade

Keika Zen

17 papers receiving 490 citations

Peers — A (Enhanced Table)

Peers by citation overlap · career bar shows stage (early→late) cites · hero ref

Name h Career Trend Papers Cites
Keika Zen Japan 11 389 120 94 80 72 17 499
Byungho Lim South Korea 14 354 0.9× 104 0.9× 160 1.7× 35 0.4× 72 1.0× 25 563
Ruth Román Spain 11 233 0.6× 149 1.2× 61 0.6× 20 0.3× 59 0.8× 25 467
Kate H. Brettingham‐Moore Australia 13 491 1.3× 115 1.0× 83 0.9× 62 0.8× 40 0.6× 19 674
Vignesh Sundararajan Singapore 12 351 0.9× 197 1.6× 156 1.7× 44 0.6× 31 0.4× 17 508
Anna Wiles New Zealand 13 266 0.7× 130 1.1× 76 0.8× 83 1.0× 21 0.3× 17 437
Linda Bojmar Sweden 9 365 0.9× 171 1.4× 189 2.0× 26 0.3× 57 0.8× 18 568
Meropi Athanasiou United States 12 450 1.2× 120 1.0× 80 0.9× 81 1.0× 34 0.5× 15 639
Moying Tang Chile 12 497 1.3× 225 1.9× 156 1.7× 30 0.4× 148 2.1× 12 746
Natalie McGregor United States 8 224 0.6× 240 2.0× 98 1.0× 60 0.8× 22 0.3× 8 504
Geneviève Clément Switzerland 14 496 1.3× 93 0.8× 55 0.6× 55 0.7× 150 2.1× 16 654

Countries citing papers authored by Keika Zen

Since Specialization
Citations

This map shows the geographic impact of Keika Zen's research. It shows the number of citations coming from papers published by authors working in each country. You can also color the map by specialization and compare the number of citations received by Keika Zen with the expected number of citations based on a country's size and research output (numbers larger than one mean the country cites Keika Zen more than expected).

Fields of papers citing papers by Keika Zen

Since Specialization
Physical SciencesHealth SciencesLife SciencesSocial Sciences

This network shows the impact of papers produced by Keika Zen. Nodes represent research fields, and links connect fields that are likely to share authors. Colored nodes show fields that tend to cite the papers produced by Keika Zen. The network helps show where Keika Zen may publish in the future.

Co-authorship network of co-authors of Keika Zen

This figure shows the co-authorship network connecting the top 25 collaborators of Keika Zen. A scholar is included among the top collaborators of Keika Zen based on the total number of citations received by their joint publications. Widths of edges represent the number of papers authors have co-authored together. Node borders signify the number of papers an author published with Keika Zen. Keika Zen is excluded from the visualization to improve readability, since they are connected to all nodes in the network.

All Works

17 of 17 papers shown
1.
Iwai, N., Osamu Dohi, Shinya Yamada, et al.. (2023). Clinical Outcomes of Follow-Up Observation After Endoscopic Submucosal Dissection for Esophageal Squamous Cell Carcinoma Invading the Muscularis Mucosa Without Lymphovascular Involvement. Digestive Diseases and Sciences. 68(9). 3679–3687. 1 indexed citations
2.
3.
Iwai, N., Osamu Dohi, Shinya Yamada, et al.. (2021). Prognostic risk factors associated with esophageal squamous cell carcinoma patients undergoing endoscopic submucosal dissection: a multi-center cohort study. Surgical Endoscopy. 36(4). 2279–2289. 19 indexed citations
4.
Dohi, Osamu, Shinya Yamada, Takeshi Yasuda, et al.. (2020). Clinical Outcomes of Vonoprazan-Treated Patients after Endoscopic Submucosal Dissection for Gastric Neoplasms: A Prospective Multicenter Observation Study. Digestion. 102(3). 386–396. 10 indexed citations
5.
Yamada, Shinya, Osamu Dohi, Akihito Harusato, et al.. (2019). Tu1112 IS ENDOSCOPIC SUBMUCOSAL DISSECTION NEEDED FOR STAGE IA GASTRIC CANCER IN SUPER-ELDERLY PATIENTS?. Gastrointestinal Endoscopy. 89(6). AB563–AB563. 1 indexed citations
6.
Kadoya, Yoshito, Keika Zen, Nagara Tamaki, et al.. (2019). 192Early effect of transcatheter aortic valve implantation on cardiac sympathetic nervous function assessed by 123i-metaiodobenzylguanidine scintigraphy in patients with severe aortic stenosis. European Heart Journal - Cardiovascular Imaging. 20(Supplement_3). 1 indexed citations
7.
Endo, Mio, Kohichiroh Yasui, Yoh Zen, et al.. (2012). Alterations of the SWI/SNF chromatin remodelling subunit‐BRG1 and BRM in hepatocellular carcinoma. Liver International. 33(1). 105–117. 39 indexed citations
8.
Tsuji, Kazuhiro, Kohichiroh Yasui, Yasuyuki Gen, et al.. (2010). PEG10 is a probable target for the amplification at 7q21 detected in hepatocellular carcinoma. Cancer Genetics and Cytogenetics. 198(2). 118–125. 20 indexed citations
9.
Gen, Yasuyuki, Kohichiroh Yasui, Yoh Zen, et al.. (2010). SOX2 identified as a target gene for the amplification at 3q26 that is frequently detected in esophageal squamous cell carcinoma. Cancer Genetics and Cytogenetics. 202(2). 82–93. 71 indexed citations
10.
Zen, Keika, Kinya Yasui, Yasuyuki Gen, et al.. (2009). Defective expression of polarity protein PAR-3 gene (PARD3) in esophageal squamous cell carcinoma. Oncogene. 28(32). 2910–2918. 79 indexed citations
11.
Endo, Mio, Kohichiroh Yasui, Tomoaki Nakajima, et al.. (2009). Infrequent amplification of JUN in hepatocellular carcinoma.. PubMed. 29(12). 4989–94. 9 indexed citations
12.
Nakajima, Tomoaki, Kohichiroh Yasui, Keika Zen, et al.. (2008). Activation of B‐Myb by E2F1 in hepatocellular carcinoma. Hepatology Research. 38(9). 886–895. 51 indexed citations
13.
Zen, Keika, Kohichiroh Yasui, Tomoaki Nakajima, et al.. (2008). ERK5 is a target for gene amplification at 17p11 and promotes cell growth in hepatocellular carcinoma by regulating mitotic entry. Genes Chromosomes and Cancer. 48(2). 109–120. 50 indexed citations
14.
Gen, Yasuyuki, Kohichiroh Yasui, Keika Zen, et al.. (2008). A novel amplification target, ARHGAP5, promotes cell spreading and migration by negatively regulating RhoA in Huh-7 hepatocellular carcinoma cells. Cancer Letters. 275(1). 27–34. 39 indexed citations
15.
Yasuda, Hiroaki, Keika Zen, Takashi Okuda, et al.. (2008). HEPATOBILIARY SARCOIDOSIS: TYPICAL APPEARANCE IN LAPAROSCOPY. Digestive Endoscopy. 20(3). 162–165. 2 indexed citations
16.
Yasui, Kohichiroh, Mio Endo, Tomoaki Nakajima, et al.. (2007). CREB3L4, INTS3, and SNAPAP are targets for the 1q21 amplicon frequently detected in hepatocellular carcinoma. Cancer Genetics and Cytogenetics. 180(1). 30–36. 40 indexed citations
17.
Bechhofer, David H. & Keika Zen. (1989). Mechanism of erythromycin-induced ermC mRNA stability in Bacillus subtilis. Journal of Bacteriology. 171(11). 5803–5811. 64 indexed citations

Rankless uses publication and citation data sourced from OpenAlex, an open and comprehensive bibliographic database. While OpenAlex provides broad and valuable coverage of the global research landscape, it—like all bibliographic datasets—has inherent limitations. These include incomplete records, variations in author disambiguation, differences in journal indexing, and delays in data updates. As a result, some metrics and network relationships displayed in Rankless may not fully capture the entirety of a scholar's output or impact.

Explore authors with similar magnitude of impact

Breakdown of academic impact, for papers by Byungho Lim Breakdown of academic impact, for papers by Ruth Román Breakdown of academic impact, for papers by Kate H. Brettingham‐Moore Breakdown of academic impact, for papers by Vignesh Sundararajan Breakdown of academic impact, for papers by Anna Wiles Breakdown of academic impact, for papers by Linda Bojmar Breakdown of academic impact, for papers by Meropi Athanasiou Breakdown of academic impact, for papers by Moying Tang Breakdown of academic impact, for papers by Natalie McGregor Breakdown of academic impact, for papers by Geneviève Clément
Rankless by CCL
2026