Koji Isozaki

7.8k total citations · 2 hit papers
31 papers, 5.7k citations indexed

About

Koji Isozaki is a scholar working on Gastroenterology, Surgery and Pulmonary and Respiratory Medicine. According to data from OpenAlex, Koji Isozaki has authored 31 papers receiving a total of 5.7k indexed citations (citations by other indexed papers that have themselves been cited), including 23 papers in Gastroenterology, 11 papers in Surgery and 9 papers in Pulmonary and Respiratory Medicine. Recurrent topics in Koji Isozaki's work include Gastrointestinal Tumor Research and Treatment (20 papers), Platelet Disorders and Treatments (9 papers) and Mast cells and histamine (7 papers). Koji Isozaki is often cited by papers focused on Gastrointestinal Tumor Research and Treatment (20 papers), Platelet Disorders and Treatments (9 papers) and Mast cells and histamine (7 papers). Koji Isozaki collaborates with scholars based in Japan, Belgium and France. Koji Isozaki's co-authors include Seiichi Hirota, Yukihiko Kitamura, Yasuhisa Shinomura, Toshirou Nishida, Yūji Matsuzawa, Shingo Ishiguro, Masato Hanada, Masashi Takeda, A Kurata and Kiyoshi Kawano and has published in prestigious journals such as Science, Gastroenterology and Arteriosclerosis Thrombosis and Vascular Biology.

In The Last Decade

Koji Isozaki

30 papers receiving 5.5k citations

Hit Papers

2 papers align trajectories

What are hit papers?

Hit papers significantly outperform the citation benchmark for their cohort. A paper qualifies if it has ≥500 total citations, achieves ≥1.5× the top-1% citation threshold for papers in the same subfield and year (this is the minimum needed to enter the top 1%, not the average within it), or reaches the top citation threshold in at least one of its specific research topics.

Gain-of-Function Mutations of c- kit in Human Gastrointestinal Stromal Tumors

1998 3.5k citations Seiichi Hirota, Koji Isozaki et al. profile →
Gain-of-function mutations of platelet-derived growth factor receptor α gene in gastrointestinal stromal tumors

2003 520 citations Seiichi Hirota, Akiko Ohashi et al. Gastroenterology profile →

Peers — A (Enhanced Table)

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

Name	h						Papers	Cites
Koji Isozaki Japan	19	4.4k	3.5k	2.3k	918	644	31	5.7k
Diana Griffith United States	16	2.9k 0.7×	2.7k 0.8×	1.4k 0.6×	791 0.9×	852 1.3×	22	5.1k
Masato Hanada Japan	15	2.7k 0.6×	2.4k 0.7×	1.6k 0.7×	538 0.6×	386 0.6×	50	4.0k
Nora Joseph United States	9	1.6k 0.4×	1.6k 0.5×	785 0.3×	397 0.4×	406 0.6×	20	2.6k
Marcia L. Lux United States	7	1.3k 0.3×	1.3k 0.4×	720 0.3×	266 0.3×	235 0.4×	7	2.1k
Tiziana Negri Italy	32	522 0.1×	1.8k 0.5×	512 0.2×	234 0.3×	678 1.1×	69	3.1k
Sheng Xiao United States	9	642 0.1×	794 0.2×	396 0.2×	184 0.2×	404 0.6×	24	1.8k
Bastian Gunawan Germany	31	693 0.2×	1.2k 0.4×	636 0.3×	233 0.3×	954 1.5×	95	2.6k
Yuji Sakuma Japan	26	521 0.1×	1.2k 0.3×	474 0.2×	184 0.2×	698 1.1×	90	2.3k
Sabrina Rossi Italy	24	561 0.1×	1.0k 0.3×	478 0.2×	267 0.3×	1.0k 1.6×	55	2.5k
Frédéric Chibon France	39	257 0.1×	2.6k 0.7×	411 0.2×	218 0.2×	1.2k 1.9×	117	4.3k

Countries citing papers authored by Koji Isozaki

Since Specialization

Citations

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

Fields of papers citing papers by Koji Isozaki

Since Specialization

Physical SciencesHealth SciencesLife SciencesSocial Sciences

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

Co-authorship network of co-authors of Koji Isozaki

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

All Works

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20 of 20 papers shown

Yamamura, Masahiro, Takashi Akiyama, Kazuhiro Shiba, et al.. (2011). Characterization of novel germline c-kit gene mutation, KIT-Tyr553Cys, observed in a family with multiple gastrointestinal stromal tumors. Laboratory Investigation. 92(3). 451–457. 10 indexed citations

Ishikawa, Takashi, Ningning Liu, Kazuhiro Shiba, et al.. (2009). In vivo effect of imatinib on progression of cecal GIST-like tumors in exon 17-type c-kit knock-in mice. Laboratory Investigation. 89(10). 1161–1168. 6 indexed citations

Hirota, Seiichi & Koji Isozaki. (2006). Pathology of gastrointestinal stromal tumors. Pathology International. 56(1). 1–9. 116 indexed citations

Nishitani, Akiko, Seiichi Hirota, Toshirou Nishida, et al.. (2005). Differential expression of connexin 43 in gastrointestinal stromal tumours of gastric and small intestinal origin. The Journal of Pathology. 206(4). 377–382. 23 indexed citations

Ohashi, Akiko, Kazuo Kinoshita, Koji Isozaki, et al.. (2004). Different inhibitory effect of imatinib on phosphorylation of mitogen‐activated protein kinase and Akt and on proliferation in cells expressing different types of mutant platelet‐derived growth factor receptor‐α. International Journal of Cancer. 111(3). 317–321. 14 indexed citations

Masuda, Eriko, et al.. (2003). A CASE OF NODULAR REGENERATIVE HYPERPLASIA IN DIAGNOSIS OF WHICH LAPAROSCOPIC EXAMINATION WAS USEFUL. Acta gastro-enterologica belgica. 45(8). 1261–1266.

Kinoshita, Kazuo, Koji Isozaki, Seiichi Hirota, et al.. (2003). THE BASIS AND CLINIC OF GASTROINTESTINAL STROMAL TUMOR(GIST). Acta gastro-enterologica belgica. 45(11). 2181–2187. 1 indexed citations

Kiyohara, Tatsuya, Yasuhisa Shinomura, Koji Isozaki, et al.. (2003). A decreased number of c- kit -expressing cells in a patient with afferent loop syndrome. Journal of Gastroenterology. 38(4). 390–394. 10 indexed citations

Hirota, Seiichi, Akiko Ohashi, Toshirou Nishida, et al.. (2003). Gain-of-function mutations of platelet-derived growth factor receptor α gene in gastrointestinal stromal tumors. Gastroenterology. 125(3). 660–667. 520 indexed citations breakdown →

10.

Chen, Hui, Koji Isozaki, Kazuo Kinoshita, et al.. (2003). Imatinib inhibits various types of activating mutant kit found in gastrointestinal stromal tumors. International Journal of Cancer. 105(1). 130–135. 60 indexed citations

11.

Kinoshita, Kazuo, Koji Isozaki, Shusaku Tsutsui, et al.. (2003). Endoscopic ultrasonography-guided fine needle aspiration biopsy in follow-up patients with gastrointestinal stromal tumours. European Journal of Gastroenterology & Hepatology. 15(11). 1189–1193. 34 indexed citations

12.

Kinoshita, Kazuo, Seiichi Hirota, Koji Isozaki, et al.. (2003). Absence of c‐kit gene mutations in gastrointestinal stromal tumours from neurofibromatosis type 1 patients. The Journal of Pathology. 202(1). 80–85. 152 indexed citations

13.

Nakahara, Masanori, Koji Isozaki, Jean‐Marie Vanderwinden, et al.. (2002). Dose-dependent and time-limited proliferation of cultured murine interstitial cells of Cajal in response to stem cell factor. Life Sciences. 70(20). 2367–2376. 20 indexed citations

14.

Nakahara, Masanori, Koji Isozaki, Seiichi Hirota, et al.. (2002). Deficiency of KIT‐positive cells in the colon of patients with diabetes mellitus. Journal of Gastroenterology and Hepatology. 17(6). 666–670. 78 indexed citations

15.

Hirota, Seiichi, Toshirou Nishida, Koji Isozaki, et al.. (2002). Familial gastrointestinal stromal tumors associated with dysphagia and novel type germline mutation of KIT gene. Gastroenterology. 122(5). 1493–1499. 167 indexed citations

16.

Hirota, Seiichi, Toshirou Nishida, Koji Isozaki, et al.. (2001). Gain-of-function mutation at the extracellular domain of KIT in gastrointestinal stromal tumours. The Journal of Pathology. 193(4). 505–510. 178 indexed citations

17.

Isozaki, Koji, Benoît Terris, Jacques Belghiti, et al.. (2000). Germline-Activating Mutation in the Kinase Domain of KIT Gene in Familial Gastrointestinal Stromal Tumors. American Journal Of Pathology. 157(5). 1581–1585. 190 indexed citations

18.

Nakahara, Masanori, Koji Isozaki, Seiichi Hirota, et al.. (1998). A novel gain-of-function mutation of c-kit gene in gastrointestinal stromal tumors. Gastroenterology. 115(5). 1090–1095. 179 indexed citations

19.

Igura, Takumi, Sumio Kawata, Jun‐ichiro Miyagawa, et al.. (1996). Expression of Heparin-Binding Epidermal Growth Factor–Like Growth Factor in Neointimal Cells Induced by Balloon Injury in Rat Carotid Arteries. Arteriosclerosis Thrombosis and Vascular Biology. 16(12). 1524–1531. 50 indexed citations

20.

Isozaki, Koji, Seiichi Hirota, Akihiro Nakama, et al.. (1995). Disturbed intestinal movement, bile reflux to the stomach, and deficiency of c-kit-expressing cells in WsWs mutant rats. Gastroenterology. 109(2). 456–464. 155 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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