Ken Kumagai

633 total citations
37 papers, 317 citations indexed

About

Ken Kumagai is a scholar working on Surgery, Molecular Biology and Pulmonary and Respiratory Medicine. According to data from OpenAlex, Ken Kumagai has authored 37 papers receiving a total of 317 indexed citations (citations by other indexed papers that have themselves been cited), including 11 papers in Surgery, 7 papers in Molecular Biology and 7 papers in Pulmonary and Respiratory Medicine. Recurrent topics in Ken Kumagai's work include Gastric Cancer Management and Outcomes (6 papers), Helicobacter pylori-related gastroenterology studies (5 papers) and Metabolism and Genetic Disorders (4 papers). Ken Kumagai is often cited by papers focused on Gastric Cancer Management and Outcomes (6 papers), Helicobacter pylori-related gastroenterology studies (5 papers) and Metabolism and Genetic Disorders (4 papers). Ken Kumagai collaborates with scholars based in Japan and United Kingdom. Ken Kumagai's co-authors include Shuichi Yamamoto, Yoshinori Mitamura, Akira Hagiwara, Ikuya Nonaka, Takashi Katome, Takeshi Naito, Takahiro Shimizu, N Sunohara, Atsushi Takai and Yasutoshi Koga and has published in prestigious journals such as Scientific Reports, International Journal of Cancer and Carcinogenesis.

In The Last Decade

Ken Kumagai

34 papers receiving 309 citations

Peers — A (Enhanced Table)

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

Name h Career Trend Papers Cites
Ken Kumagai Japan 10 119 94 75 47 46 37 317
Syed O. Huq United States 8 122 1.0× 92 1.0× 226 3.0× 57 1.2× 39 0.8× 9 577
Naili Ma United States 8 213 1.8× 198 2.1× 89 1.2× 88 1.9× 14 0.3× 10 526
Jing Sima China 6 102 0.9× 141 1.5× 238 3.2× 31 0.7× 17 0.4× 10 371
Aihua Ma China 13 134 1.1× 134 1.4× 176 2.3× 29 0.6× 23 0.5× 28 404
Zhenyu Dong Japan 14 172 1.4× 275 2.9× 182 2.4× 31 0.7× 58 1.3× 38 563
Ailing Sui China 11 148 1.2× 148 1.6× 63 0.8× 16 0.3× 24 0.5× 13 340
Rocco Plateroti Italy 12 81 0.7× 144 1.5× 116 1.5× 50 1.1× 21 0.5× 23 369
Seth D. Fortmann United States 12 155 1.3× 155 1.6× 85 1.1× 44 0.9× 18 0.4× 28 390
Jui-Wen Hsieh Taiwan 12 88 0.7× 187 2.0× 146 1.9× 24 0.5× 5 0.1× 18 349
Kazuwa Nakao Japan 8 251 2.1× 17 0.2× 26 0.3× 41 0.9× 62 1.3× 9 470

Countries citing papers authored by Ken Kumagai

Since Specialization
Citations

This map shows the geographic impact of Ken Kumagai'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 Ken Kumagai with the expected number of citations based on a country's size and research output (numbers larger than one mean the country cites Ken Kumagai more than expected).

Fields of papers citing papers by Ken Kumagai

Since Specialization
Physical SciencesHealth SciencesLife SciencesSocial Sciences

This network shows the impact of papers produced by Ken Kumagai. 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 Ken Kumagai. The network helps show where Ken Kumagai may publish in the future.

Co-authorship network of co-authors of Ken Kumagai

This figure shows the co-authorship network connecting the top 25 collaborators of Ken Kumagai. A scholar is included among the top collaborators of Ken Kumagai 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 Ken Kumagai. Ken Kumagai is excluded from the visualization to improve readability, since they are connected to all nodes in the network.

All Works

20 of 20 papers shown
1.
Ito, Takashi, Takamichi Ishii, Haruhiko Takeda, et al.. (2023). Comprehensive analyses of the clinicopathological features and genomic mutations of combined hepatocellular‐cholangiocarcinoma. Hepatology Research. 54(1). 103–115. 4 indexed citations
2.
Kumagai, Ken, Takahiro Shimizu, Tomonori Hirano, et al.. (2023). On the origin of gastric tumours: analysis of a case with intramucosal gastric carcinoma and oxyntic gland adenoma. The Journal of Pathology. 259(4). 362–368. 12 indexed citations
3.
Kumagai, Ken. (2022). Expansion of gastric intestinal metaplasia with copy number aberrations contributes to field cancerization. Kyoto University Research Information Repository (Kyoto University). 10 indexed citations
4.
Takeda, Haruhiko, Yoshihide Ueda, Atsushi Takai, et al.. (2022). Mutational spectrum of hepatitis C virus in patients with chronic hepatitis C determined by single molecule real-time sequencing. Scientific Reports. 12(1). 7083–7083. 5 indexed citations
5.
Miyamoto, Shin’ichi, Takahiro Shimizu, Yoshinobu Nakanishi, et al.. (2022). Gastric Hyperplastic Polyps Can Shrink After Discontinuation of Proton Pump Inhibitors: A Case Series Compared With Continuation of Proton Pump Inhibitors.. PubMed. 56(3). e216–e221. 4 indexed citations
6.
Kumagai, Ken, et al.. (2022). A hemorrhagic duodenal polyp disappeared with gastric polyps after discontinuation of proton pump inhibitor. Gastrointestinal Endoscopy. 96(2). 381–382.
7.
Takeda, Haruhiko, Atsushi Takai, Eriko Iguchi, et al.. (2021). Oncogenic transcriptomic profile is sustained in the liver after the eradication of the hepatitis C virus. Carcinogenesis. 42(5). 672–684. 6 indexed citations
8.
Shimizu, Takahiro, et al.. (2021). Genetic Pathogenesis of Inflammation-Associated Cancers in Digestive Organs. Pathogens. 10(4). 453–453. 7 indexed citations
9.
Iguchi, Eriko, Atsushi Takai, Haruhiko Takeda, et al.. (2021). Author Correction: DNA methyltransferase 3B plays a protective role against hepatocarcinogenesis caused by chronic inflammation via maintaining mitochondrial homeostasis. Scientific Reports. 11(1). 14037–14037. 1 indexed citations
10.
Iguchi, Eriko, Atsushi Takai, Haruhiko Takeda, et al.. (2020). DNA methyltransferase 3B plays a protective role against hepatocarcinogenesis caused by chronic inflammation via maintaining mitochondrial homeostasis. Scientific Reports. 10(1). 21268–21268. 8 indexed citations
11.
Takeda, Haruhiko, Atsushi Takai, Ken Kumagai, et al.. (2020). Multiregional whole‐genome sequencing of hepatocellular carcinoma with nodule‐in‐nodule appearance reveals stepwise cancer evolution. The Journal of Pathology. 252(4). 398–410. 21 indexed citations
12.
Nakamura, Yosuke, Yoshinori Mitamura, Akira Hagiwara, et al.. (2014). Relationship between retinal microstructures and visual acuity after cataract surgery in patients with retinitis pigmentosa. British Journal of Ophthalmology. 99(4). 508–511. 14 indexed citations
13.
Kumagai, Ken, Yoshinori Nimura, Atsushi Mizota, et al.. (2006). Arpc1bGene Is a Candidate Prediction Marker for Choroidal Malignant Melanomas Sensitive to Radiotherapy. Investigative Ophthalmology & Visual Science. 47(6). 2300–2300. 17 indexed citations
14.
Kumagai, Ken. (2003). Surgical Removal of Subfoveal Hard Exudates in Diabetic Maculopathy. Japanese Journal of Ophthalmology. 47(2). 228–229. 2 indexed citations
15.
Yamada, Masafumi, Ken Kumagai, Masaaki Hirayama, & Akihiko Uchiyama. (1999). Estimation of nerve conduction velocity using surface multielectrode.. PubMed. 39(7). 415–9. 3 indexed citations
16.
Hasegawa, Yuta, et al.. (1994). Spinal cord injury hospitalisation in a rehabilitation hospital in Japan. Spinal Cord. 32(1). 47–51. 4 indexed citations
17.
Kurihara, Mana, et al.. (1992). [A clinical course and autopsy results of an 8-year-old severely handicapped girl with marked periventricular leukomalacia].. PubMed. 24(4). 384–90. 1 indexed citations
18.
Fujishima, Hiroshi, Kazuo Tsubota, & Ken Kumagai. (1991). Evaluation of postoperative inflammation following cataract extraction by corneal temperature. 45(8). 1471–1474. 3 indexed citations
19.
Koga, Yasutoshi, et al.. (1988). Variability in the activity of respiratory chain enzymes in mitochondrial myopathies. Acta Neuropathologica. 76(2). 135–141. 40 indexed citations
20.
Gotō, Kenichi, et al.. (1985). [Central sleep apnea in the Arnold-Chiari type II malformation and a trial to prevent it by transcutaneous electrical stimulation].. PubMed. 33(9). 1115–20. 1 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.

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