Ryoki Hara

1.4k total citations
44 papers, 555 citations indexed

About

Ryoki Hara is a scholar working on Hematology, Rheumatology and Surgery. According to data from OpenAlex, Ryoki Hara has authored 44 papers receiving a total of 555 indexed citations (citations by other indexed papers that have themselves been cited), including 27 papers in Hematology, 16 papers in Rheumatology and 13 papers in Surgery. Recurrent topics in Ryoki Hara's work include Autoimmune and Inflammatory Disorders Research (27 papers), Inflammasome and immune disorders (10 papers) and Kawasaki Disease and Coronary Complications (9 papers). Ryoki Hara is often cited by papers focused on Autoimmune and Inflammatory Disorders Research (27 papers), Inflammasome and immune disorders (10 papers) and Kawasaki Disease and Coronary Complications (9 papers). Ryoki Hara collaborates with scholars based in Japan, Iran and United States. Ryoki Hara's co-authors include Shumpei Yokota, Tomoyuki Imagawa, Masaaki Mori, Takako Miyamae, Masako Kikuchi, Takuma Hara, Utako Kaneko, Tomo Nozawa, Takayuki Kishi and Takuya Naruto and has published in prestigious journals such as PLoS ONE, Scientific Reports and Annals of the Rheumatic Diseases.

In The Last Decade

Ryoki Hara

38 papers receiving 542 citations

Peers — A (Enhanced Table)

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

Name h Career Trend Papers Cites
Ryoki Hara Japan 14 269 175 167 129 129 44 555
Jasmin Kümmerle‐Deschner Germany 13 222 0.8× 196 1.1× 194 1.2× 82 0.6× 206 1.6× 35 627
Mikhail M. Kostik Russia 15 304 1.1× 201 1.1× 145 0.9× 205 1.6× 167 1.3× 128 668
Luciana Breda Italy 17 421 1.6× 306 1.7× 252 1.5× 163 1.3× 224 1.7× 51 906
Elżbieta Smolewska Poland 12 220 0.8× 123 0.7× 121 0.7× 78 0.6× 91 0.7× 73 466
Ilaria Pagnini Italy 16 329 1.2× 314 1.8× 110 0.7× 88 0.7× 282 2.2× 50 773
Shigeki Katakura Japan 10 233 0.9× 119 0.7× 138 0.8× 196 1.5× 137 1.1× 22 575
Ethan S Sen United Kingdom 15 369 1.4× 270 1.5× 80 0.5× 97 0.8× 118 0.9× 32 695
Consuelo Modesto Spain 13 328 1.2× 228 1.3× 145 0.9× 111 0.9× 303 2.3× 37 747
Sandrine Compeyrot‐Lacassagne United Kingdom 11 288 1.1× 320 1.8× 67 0.4× 112 0.9× 138 1.1× 25 687
B. Anne Eberhard United States 14 211 0.8× 292 1.7× 156 0.9× 217 1.7× 78 0.6× 33 649

Countries citing papers authored by Ryoki Hara

Since Specialization
Citations

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

Fields of papers citing papers by Ryoki Hara

Since Specialization
Physical SciencesHealth SciencesLife SciencesSocial Sciences

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

Co-authorship network of co-authors of Ryoki Hara

This figure shows the co-authorship network connecting the top 25 collaborators of Ryoki Hara. A scholar is included among the top collaborators of Ryoki Hara 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 Ryoki Hara. Ryoki Hara 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.
Nozawa, Tomo, et al.. (2025). Intolerance of oral methotrexate in juvenile idiopathic arthritis. Pediatrics International. 67(1). e70112–e70112.
2.
Nozawa, Tomo, Kenichi Nishimura, Ryoki Hara, et al.. (2023). Characteristics of persistent arthritis with refractory Kawasaki disease: a single-center retrospective study. Scientific Reports. 13(1). 9890–9890.
3.
Tomiita, Minako, Ichiro Kobayashi, Yasuhiko Itoh, et al.. (2020). Clinical practice guidance for Sjögren’s syndrome in pediatric patients (2018) – summarized and updated. Modern Rheumatology. 31(2). 283–293. 11 indexed citations
4.
Iwata, Naomi, Minako Tomiita, Ichiro Kobayashi, et al.. (2020). Utility of the EULAR Sjögren syndrome disease activity index in Japanese children: a retrospective multicenter cohort study. Pediatric Rheumatology. 18(1). 73–73.
5.
Yashiro, Masato, Nami Okamoto, Hiroaki Umebayashi, et al.. (2019). Clinical features and characteristics of uveitis associated with juvenile idiopathic arthritis in Japan: first report of the pediatric rheumatology association of Japan (PRAJ). Pediatric Rheumatology. 17(1). 15–15. 23 indexed citations
6.
Hara, Ryoki, Hiroaki Umebayashi, Syuji Takei, et al.. (2019). Intravenous abatacept in Japanese patients with polyarticular-course juvenile idiopathic arthritis: results from a phase III open-label study. Pediatric Rheumatology. 17(1). 17–17. 10 indexed citations
7.
Nishimura, Kenichi, et al.. (2019). Two cases of microscopic polyangiitis complicated with juvenile idiopathic arthritis. Japanese journal of pediatric nephrology. 32(1). 43–49.
8.
Hara, Ryoki, Kenichi Nishimura, Tomo Nozawa, et al.. (2015). A national survey on current use of mycophenolate mofetil for childhood-onset systemic lupus erythematosus in Japan.. PubMed. 25(6). 858–64. 5 indexed citations
9.
Mori, Masaaki, Masakatsu Yanagimachi, Takako Miyamae, et al.. (2013). Analysis of Gender Differences in Genetic Risk: Association of TNFAIP3 Polymorphism with Male Childhood-Onset Systemic Lupus Erythematosus in the Japanese Population. PLoS ONE. 8(8). e72551–e72551. 23 indexed citations
10.
Hara, Ryoki, Utako Kaneko, Takako Miyamae, et al.. (2012). Safety and response to influenza vaccine in patients with systemic-onset juvenile idiopathic arthritis receiving tocilizumab. Modern Rheumatology. 22(6). 871–876. 34 indexed citations
11.
Inaba, Yutaka, Chie Aoki, Tomoyuki Imagawa, et al.. (2012). Radiologic analysis of the effect of tocilizumab on hands and large joints in children with systemic juvenile idiopathic arthritis. Modern Rheumatology. 23(4). 667–673. 11 indexed citations
12.
Mori, Masaaki, Tomoyuki Imagawa, Ryoki Hara, et al.. (2012). Efficacy and Limitation of Infliximab Treatment for Children with Kawasaki Disease Intractable to Intravenous Immunoglobulin Therapy: Report of an Open-label Case Series. The Journal of Rheumatology. 39(4). 864–867. 54 indexed citations
13.
Tadaki, Hiromi, Hirotomo Saitsu, Hirokazu Kanegane, et al.. (2011). Exonic deletion of CASP10 in a patient presenting with systemic juvenile idiopathic arthritis, but not with autoimmune lymphoproliferative syndrome type IIa. International Journal of Immunogenetics. 38(4). 287–293. 7 indexed citations
14.
Yanagimachi, Masakatsu, Takuya Naruto, Takako Miyamae, et al.. (2011). Association ofIRF5Polymorphisms with Susceptibility to Macrophage Activation Syndrome in Patients with Juvenile Idiopathic Arthritis. The Journal of Rheumatology. 38(4). 769–774. 52 indexed citations
15.
Tadaki, Hiromi, Hirotomo Saitsu, Tomoyuki Imagawa, et al.. (2011). De novo 19q13.42 duplications involving NLRP gene cluster in a patient with systemic-onset juvenile idiopathic arthritis. Journal of Human Genetics. 56(5). 343–347. 21 indexed citations
16.
Yanagimachi, Masakatsu, Takako Miyamae, Takuya Naruto, et al.. (2010). Association of HLA-A*02:06 and HLA-DRB1*04:05 with clinical subtypes of juvenile idiopathic arthritis. Journal of Human Genetics. 56(3). 196–199. 18 indexed citations
17.
Miyamae, Takako, Yutaka Inaba, Gen Nishimura, et al.. (2010). Effect of anakinra on arthropathy in CINCA/NOMID syndrome. Pediatric Rheumatology. 8(1). 9–9. 25 indexed citations
18.
Yanagimachi, Masakatsu, Takuya Naruto, Takuma Hara, et al.. (2010). Influence of polymorphisms within the methotrexate pathway genes on the toxicity and efficacy of methotrexate in patients with juvenile idiopathic arthritis. British Journal of Clinical Pharmacology. 71(2). 237–243. 41 indexed citations
19.
Mori, Masaaki, et al.. (2010). National survey of childhood febrile illness cases with fever of unknown origin in Japan. Pediatrics International. 53(4). 421–425. 11 indexed citations
20.
Kaneko, Utako, Takayuki Kishi, Masako Kikuchi, et al.. (2010). Infliximab therapy for three adolescent patients with refractory Takayasu's arteritis. Japanese Journal of Clinical Immunology. 33(6). 317–323. 6 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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