Ko Kobayashi

1.3k total citations
88 papers, 941 citations indexed

About

Ko Kobayashi is a scholar working on Urology, Pulmonary and Respiratory Medicine and Surgery. According to data from OpenAlex, Ko Kobayashi has authored 88 papers receiving a total of 941 indexed citations (citations by other indexed papers that have themselves been cited), including 32 papers in Urology, 31 papers in Pulmonary and Respiratory Medicine and 29 papers in Surgery. Recurrent topics in Ko Kobayashi's work include Urinary Bladder and Prostate Research (26 papers), Sexual function and dysfunction studies (24 papers) and Bladder and Urothelial Cancer Treatments (15 papers). Ko Kobayashi is often cited by papers focused on Urinary Bladder and Prostate Research (26 papers), Sexual function and dysfunction studies (24 papers) and Bladder and Urothelial Cancer Treatments (15 papers). Ko Kobayashi collaborates with scholars based in Japan, United States and Denmark. Ko Kobayashi's co-authors include Shin‐ichi Hisasue, Naoya Masumori, Taiji Tsukamoto, Naoki Itoh, Ryuichi Kato, Kohei Hashimoto, Ryoji Furuya, Seiji Furuya, Toshiaki Tanaka and Yoshiaki Kumamoto and has published in prestigious journals such as Nature Medicine, SHILAP Revista de lepidopterología and The Journal of Urology.

In The Last Decade

Ko Kobayashi

77 papers receiving 901 citations

Peers — A (Enhanced Table)

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

Name h Career Trend Papers Cites
Ko Kobayashi Japan 16 409 380 265 252 217 88 941
Önder Cangüven Qatar 17 381 0.9× 261 0.7× 284 1.1× 160 0.6× 127 0.6× 56 785
Theodor Klotz Germany 16 274 0.7× 247 0.7× 212 0.8× 122 0.5× 164 0.8× 36 729
Roberto Ponchietti Italy 14 249 0.6× 174 0.5× 86 0.3× 290 1.2× 228 1.1× 61 837
Richard Casey Canada 15 213 0.5× 309 0.8× 234 0.9× 49 0.2× 198 0.9× 41 721
Enrico Spera Italy 12 184 0.4× 178 0.5× 148 0.6× 116 0.5× 167 0.8× 19 512
Somboon Leungwattanakij Thailand 14 551 1.3× 328 0.9× 343 1.3× 154 0.6× 87 0.4× 23 758
Robert Pickard United Kingdom 11 205 0.5× 408 1.1× 186 0.7× 56 0.2× 253 1.2× 29 664
A Zanollo Italy 15 158 0.4× 405 1.1× 98 0.4× 154 0.6× 157 0.7× 62 777
M. Truß Germany 15 225 0.6× 355 0.9× 99 0.4× 214 0.8× 261 1.2× 51 783
Hugo H. Davila United States 13 561 1.4× 301 0.8× 336 1.3× 188 0.7× 79 0.4× 26 730

Countries citing papers authored by Ko Kobayashi

Since Specialization
Citations

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

Fields of papers citing papers by Ko Kobayashi

Since Specialization
Physical SciencesHealth SciencesLife SciencesSocial Sciences

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

Co-authorship network of co-authors of Ko Kobayashi

This figure shows the co-authorship network connecting the top 25 collaborators of Ko Kobayashi. A scholar is included among the top collaborators of Ko Kobayashi 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 Ko Kobayashi. Ko Kobayashi 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.
Galsky, Matthew D., Dean F. Bajorin, Yoshihiko Tomita, et al.. (2025). Adjuvant nivolumab in muscle-invasive urothelial carcinoma: exploratory biomarker analysis of the randomized phase 3 CheckMate 274 trial. Nature Medicine. 31(9). 3062–3073.
2.
3.
Shindo, Tetsuya, Kohei Hashimoto, Shintaro Miyamoto, et al.. (2025). Efficacy and safety of enfortumab vedotin in older patients with metastatic urothelial carcinoma: A multicenter retrospective study. Journal of Geriatric Oncology. 16(2). 102183–102183. 1 indexed citations
4.
Tanaka, Toshiaki, et al.. (2024). Development and preliminary evaluation of a novel procedure for creation of an ileal conduit stoma aimed at preventing parastomal hernia. International Journal of Urology. 31(5). 512–518. 1 indexed citations
5.
6.
Arihara, Yohei, Ko Kobayashi, Shintaro Sugita, et al.. (2024). Marked Response to Nivolumab by a Patient With SMARCA4‐Deficient Undifferentiated Urothelial Carcinoma Showing High PD‐L1 Expression: A Case Report. Cancer Reports. 7(6). e2127–e2127.
7.
Hashimoto, Kohei, et al.. (2024). Ideal cystoscopic interval after nephroureterectomy in patients with upper tract urothelial carcinoma. World Journal of Urology. 42(1). 629–629.
8.
Hashimoto, Kohei, Tetsuya Shindo, Sachiyo Nishida, et al.. (2024). Management of apalutamide‐induced rash with focus on early peaks. International Journal of Urology. 32(1). 113–115.
9.
Hatakeyama, Hiroyasu, Ko Kobayashi, & Makoto Kanzaki. (2022). Three live-imaging techniques for comprehensively understanding the initial trigger for insulin-responsive intracellular GLUT4 trafficking. iScience. 25(4). 104164–104164. 5 indexed citations
10.
Fukuta, Fumimasa, et al.. (2021). Efficacy of vibegron in patients with overactive bladder: Multicenter prospective study of real‐world clinical practice in Japan, SCCOP study 19‐01. LUTS Lower Urinary Tract Symptoms. 14(2). 109–116. 4 indexed citations
11.
Fukuta, Fumimasa, et al.. (2018). Laparoscopic Surgery for Seminal Vesicle Cysts and Ureterocele with Urination Disorder: A Case Report of Zinner Syndrome. Journal of Endourology Case Reports. 4(1). 35–38. 10 indexed citations
12.
Horiguchi, Hiroto, Kohichi Takada, Yusuke Kamihara, et al.. (2014). Radiation-Induced Leiomyosarcoma of the Prostate after Brachytherapy for Prostatic Adenocarcinoma. Case Reports in Oncology. 7(2). 565–570. 9 indexed citations
13.
Furuya, Ryoji, Naoya Masumori, Seiji Furuya, et al.. (2010). INVESTIGATION OF ADVERSE EVENTS AND THE CONTINUANCE RATE OF SILODOSIN IN ALL PATIENTS WHO RECEIVED SILODOSIN FOR LOWER URINARY TRACT SYMPTOMS SUGGESTIVE OF BENIGN PROSTATIC HYPERPLASIA. The Japanese Journal of Urology. 101(1). 13–17. 5 indexed citations
14.
Kobayashi, Ko, Naoya Masumori, Ryuichi Kato, et al.. (2009). Orgasm is preserved regardless of ejaculatory dysfunction with selective α1A-blocker administration. International Journal of Impotence Research. 21(5). 306–310. 26 indexed citations
15.
Kobayashi, Ko, Naoya Masumori, Shin‐ichi Hisasue, et al.. (2008). Inhibition of Seminal Emission Is the Main Cause of Anejaculation Induced by a New Highly Selective α1A-Blocker in Normal Volunteers. The Journal of Sexual Medicine. 5(9). 2185–2190. 74 indexed citations
16.
17.
Hisasue, Shin‐ichi, Ryoji Furuya, Naoki Itoh, et al.. (2006). Ejaculatory disorder caused by alpha‐1 adrenoceptor antagonists is not retrograde ejaculation but a loss of seminal emission. International Journal of Urology. 13(10). 1311–1316. 123 indexed citations
18.
Shimizu, Takashi, Shin‐ichi Hisasue, Yoshikazu Sato, et al.. (2005). Erectile dysfunction following nerve‐sparing radical retropubic prostatectomy and its treatment with sildenafil. International Journal of Urology. 12(6). 552–557. 12 indexed citations
19.
Maeda, Toshihiro, Naoki Itoh, Ko Kobayashi, et al.. (2002). Elevated serum estradiol suggesting recurrence of Leydig cell tumor nine years after radical orchiectomy. International Journal of Urology. 9(11). 659–661. 15 indexed citations
20.
Kobayashi, Ko, et al.. (1999). Genetic analysis of familial and multiple malignancies of endometrial cancer. International Journal of Gynecology & Obstetrics. 66(2). 149–153. 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.

Explore authors with similar magnitude of impact

Breakdown of academic impact, for papers by Önder Cangüven Breakdown of academic impact, for papers by Theodor Klotz Breakdown of academic impact, for papers by Roberto Ponchietti Breakdown of academic impact, for papers by Richard Casey Breakdown of academic impact, for papers by Enrico Spera Breakdown of academic impact, for papers by Somboon Leungwattanakij Breakdown of academic impact, for papers by Robert Pickard Breakdown of academic impact, for papers by A Zanollo Breakdown of academic impact, for papers by M. Truß Breakdown of academic impact, for papers by Hugo H. Davila
Rankless by CCL
2026