Ryosuke Okamura

3.5k total citations · 1 hit paper
86 papers, 2.2k citations indexed

About

Ryosuke Okamura is a scholar working on Oncology, Cancer Research and Surgery. According to data from OpenAlex, Ryosuke Okamura has authored 86 papers receiving a total of 2.2k indexed citations (citations by other indexed papers that have themselves been cited), including 55 papers in Oncology, 34 papers in Cancer Research and 31 papers in Surgery. Recurrent topics in Ryosuke Okamura's work include Cancer Genomics and Diagnostics (33 papers), Colorectal Cancer Surgical Treatments (24 papers) and Colorectal Cancer Screening and Detection (15 papers). Ryosuke Okamura is often cited by papers focused on Cancer Genomics and Diagnostics (33 papers), Colorectal Cancer Surgical Treatments (24 papers) and Colorectal Cancer Screening and Detection (15 papers). Ryosuke Okamura collaborates with scholars based in Japan, United States and Netherlands. Ryosuke Okamura's co-authors include Razelle Kurzrock, Shumei Kato, Jason K. Sicklick, Paul T. Fanta, Suzanna Lee, Scott M. Lippman, Yoshiharu Sakai, Amélie Boichard, Lyudmila Bazhenova and Koya Hida and has published in prestigious journals such as Nature Medicine, Journal of Clinical Oncology and SHILAP Revista de lepidopterología.

In The Last Decade

Ryosuke Okamura

74 papers receiving 2.2k citations

Hit 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.

Molecular profiling of cancer patients enables personalized combination therapy: the I-PREDICT study

2019 429 citations Jason K. Sicklick, Shumei Kato et al. profile →

Peers — A (Enhanced Table)

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

Name	h						Papers	Cites
Ryosuke Okamura Japan	24	1.3k	864	789	557	489	86	2.2k
Tania Fleitas Spain	19	1.1k 0.9×	570 0.7×	1.1k 1.3×	577 1.0×	552 1.1×	58	2.3k
David Fabrizio United States	26	1.9k 1.5×	927 1.1×	1.0k 1.3×	666 1.2×	360 0.7×	88	2.9k
Giuseppe Badalamenti Italy	25	1.0k 0.8×	553 0.6×	764 1.0×	621 1.1×	441 0.9×	144	2.3k
James Suh United States	21	1.0k 0.8×	577 0.7×	820 1.0×	519 0.9×	331 0.7×	72	1.9k
Vinod Ganju Australia	24	2.0k 1.5×	447 0.5×	906 1.1×	655 1.2×	323 0.7×	94	2.7k
Leigh Marcus United States	12	1.1k 0.8×	457 0.5×	488 0.6×	279 0.5×	311 0.6×	18	1.6k
Laura J. Tafe United States	24	965 0.7×	530 0.6×	1.0k 1.3×	667 1.2×	262 0.5×	100	2.2k
Sharon X. Liang United States	24	1.1k 0.8×	533 0.6×	547 0.7×	914 1.6×	655 1.3×	57	3.2k
V.A. Miller United States	22	2.1k 1.6×	508 0.6×	1.6k 2.1×	924 1.7×	323 0.7×	83	3.0k
Gina M. Vaccaro United States	20	1.2k 1.0×	373 0.4×	833 1.1×	494 0.9×	1.1k 2.3×	52	2.3k

Countries citing papers authored by Ryosuke Okamura

Since Specialization

Citations

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

Fields of papers citing papers by Ryosuke Okamura

Since Specialization

Physical SciencesHealth SciencesLife SciencesSocial Sciences

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

Co-authorship network of co-authors of Ryosuke Okamura

This figure shows the co-authorship network connecting the top 25 collaborators of Ryosuke Okamura. A scholar is included among the top collaborators of Ryosuke Okamura 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 Ryosuke Okamura. Ryosuke Okamura 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

Itatani, Yoshiro, Koya Hida, Ryosuke Okamura, et al.. (2025). Initial Clinical Experience of Robot‐Assisted Rectal Surgery by Using Hugo RAS System: Horizontal Line Port Placement With Contralateral Reserve Arm Manipulation. Asian Journal of Endoscopic Surgery. 18(1). e70099–e70099.

Yoshida, Yu, Yoshiro Itatani, Koya Hida, et al.. (2025). Robot-Assisted Total Proctocolectomy for Familial Adenomatous Polyposis with Multiple Colorectal Cancers Using the Hugo RAS System. Surgical Case Reports. 11(1). n/a–n/a.

Sakaguchi, Masazumi, Shigeru Tsunoda, Yuki Teramoto, et al.. (2025). Mediastinoscopy-Assisted Esophagectomy as an Effective Treatment for IgG4-Related Esophageal Stenosis: A Case Report. Surgical Case Reports. 11(1). n/a–n/a.

Itatani, Yoshiro, Nobuaki Hoshino, Ryosuke Okamura, et al.. (2024). Articulating forceps in laparoscopic total mesorectal excision: A video comparison with robotic surgery. Asian Journal of Endoscopic Surgery. 17(2).

Wada, Hiroshi, Shinichiro Hasegawa, Kei Asukai, et al.. (2024). Prediction for oxaliplatin‐induced liver injury using patient‐derived liver organoids. Cancer Medicine. 13(3). e7042–e7042. 5 indexed citations

Itatani, Yoshiro, Kenji Kawada, Rei Mizuno, et al.. (2023). Downregulation of osteoprotegerin in colorectal cancer cells promotes liver metastasis via activating tumor-associated macrophage. Scientific Reports. 13(1). 22217–22217.

Okamura, Ryosuke, Yoshiro Itatani, Yusuke Fujita, et al.. (2023). Postoperative recurrence in locally advanced rectal cancer: how does neoadjuvant treatment affect recurrence pattern?. World Journal of Surgical Oncology. 21(1). 247–247. 9 indexed citations

Kato, Shumei, Jacob J. Adashek, Ryosuke Okamura, et al.. (2022). Multi‐omic analysis in carcinoma of unknown primary ( CUP ): therapeutic impact of knowing the unknown. Molecular Oncology. 18(4). 956–968. 6 indexed citations

Okamura, Ryosuke, et al.. (2022). Tumor Infiltrating Lymphocyte Expression of PD-1 Predicts Response to Anti-PD-1/PD-L1 Immunotherapy. SHILAP Revista de lepidopterología. 5(4). 90–97. 23 indexed citations

10.

Kato, Shumei, Ryosuke Okamura, Jacob J. Adashek, et al.. (2021). Targeting G1/S phase cell-cycle genomic alterations and accompanying co-alterations with individualized CDK4/6 inhibitor–based regimens. JCI Insight. 6(1). 24 indexed citations

11.

Kato, Shumei, Jacob J. Adashek, Justin Shaya, et al.. (2021). Concomitant MEK and Cyclin Gene Alterations: Implications for Response to Targeted Therapeutics. Clinical Cancer Research. 27(10). 2792–2797. 31 indexed citations

12.

Rosenberg, Shai, Ryosuke Okamura, Shumei Kato, Thierry Soussi, & Razelle Kurzrock. (2020). Survival Implications of the Relationship between Tissue versus Circulating Tumor DNA TP53 Mutations—A Perspective from a Real-World Precision Medicine Cohort. Molecular Cancer Therapeutics. 19(12). 2612–2620. 10 indexed citations

13.

Riviere, Paul, Aaron M. Goodman, Ryosuke Okamura, et al.. (2020). High Tumor Mutational Burden Correlates with Longer Survival in Immunotherapy-Naïve Patients with Diverse Cancers. Molecular Cancer Therapeutics. 19(10). 2139–2145. 53 indexed citations

14.

Adashek, Jacob J., et al.. (2020). 86MO Personalized molecularly matched therapies for carcinomas of unknown primary is associated with improved outcomes. Annals of Oncology. 31. S275–S276. 6 indexed citations

15.

Choi, In Sil, Shumei Kato, Paul T. Fanta, et al.. (2019). Genomic Profiling of Blood-Derived Circulating Tumor DNA from Patients with Colorectal Cancer: Implications for Response and Resistance to Targeted Therapeutics. Molecular Cancer Therapeutics. 18(10). 1852–1862. 21 indexed citations

16.

Okamura, Ryosuke, et al.. (2019). Temporal and spatial effects and survival outcomes associated with concordance between tissue and blood KRAS alterations in the pan‐cancer setting. International Journal of Cancer. 146(2). 566–576. 20 indexed citations

17.

Goodman, Aaron M., Shumei Kato, Ranajoy Chattopadhyay, et al.. (2019). Phenotypic and Genomic Determinants of Immunotherapy Response Associated with Squamousness. Cancer Immunology Research. 7(6). 866–873. 22 indexed citations

18.

Kato, Shumei, Ryosuke Okamura, Joel Baumgartner, et al.. (2018). Analysis of Circulating Tumor DNA and Clinical Correlates in Patients with Esophageal, Gastroesophageal Junction, and Gastric Adenocarcinoma. Clinical Cancer Research. 24(24). 6248–6256. 94 indexed citations

19.

Yamamoto, Takamasa, Kenji Kawada, Yoshiro Itatani, et al.. (2016). Loss of SMAD4 Promotes Lung Metastasis of Colorectal Cancer by Accumulation of CCR1+ Tumor-Associated Neutrophils through CCL15-CCR1 Axis. Clinical Cancer Research. 23(3). 833–844. 75 indexed citations

20.

Hoshino, Nobuaki, Suguru Hasegawa, Koya Hida, et al.. (2016). Influence of hospital type on survival in stage IV colorectal cancer. International Journal of Colorectal Disease. 31(8). 1443–1449. 4 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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