Ryo Sumazaki

2.7k total citations
105 papers, 1.9k citations indexed

About

Ryo Sumazaki is a scholar working on Surgery, Epidemiology and Immunology. According to data from OpenAlex, Ryo Sumazaki has authored 105 papers receiving a total of 1.9k indexed citations (citations by other indexed papers that have themselves been cited), including 27 papers in Surgery, 27 papers in Epidemiology and 18 papers in Immunology. Recurrent topics in Ryo Sumazaki's work include Hepatitis B Virus Studies (12 papers), Hepatitis C virus research (11 papers) and Immunodeficiency and Autoimmune Disorders (11 papers). Ryo Sumazaki is often cited by papers focused on Hepatitis B Virus Studies (12 papers), Hepatitis C virus research (11 papers) and Immunodeficiency and Autoimmune Disorders (11 papers). Ryo Sumazaki collaborates with scholars based in Japan, United States and Bangladesh. Ryo Sumazaki's co-authors include Hitoshi Takita, Akira Matsui, Hiromitsu Nakauchi, Emiko Noguchi, Shigemi Isoyama, M. Shibasaki, Takako Matsubara, Takashi Fukushima, Nobuyoshi Shiojiri and Kazuko Keino‐Masu and has published in prestigious journals such as Proceedings of the National Academy of Sciences, The Lancet and Nature Genetics.

In The Last Decade

Ryo Sumazaki

104 papers receiving 1.9k citations

Peers — A (Enhanced Table)

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

Name h Career Trend Papers Cites
Ryo Sumazaki Japan 24 598 482 393 392 305 105 1.9k
Michael Stormon Australia 18 547 0.9× 164 0.3× 240 0.6× 238 0.6× 282 0.9× 67 1.3k
Andreas Jenke Germany 31 306 0.5× 604 1.3× 341 0.9× 199 0.5× 165 0.5× 75 2.1k
Katja Kotsch Germany 31 675 1.1× 598 1.2× 379 1.0× 182 0.5× 1.6k 5.1× 89 3.3k
Andrea Ferreira‐Gonzalez United States 26 228 0.4× 835 1.7× 673 1.7× 630 1.6× 209 0.7× 87 2.3k
Giuseppe Longo Italy 26 285 0.5× 189 0.4× 533 1.4× 513 1.3× 213 0.7× 87 2.3k
Paige M. Porrett United States 21 488 0.8× 621 1.3× 320 0.8× 234 0.6× 1.4k 4.5× 62 2.6k
Mahmoud Sadeghi Germany 25 393 0.7× 404 0.8× 342 0.9× 133 0.3× 601 2.0× 87 1.9k
Ali Akbar Pourfathollah Iran 23 186 0.3× 401 0.8× 378 1.0× 212 0.5× 532 1.7× 165 1.8k
Maura Rossetti United States 24 355 0.6× 277 0.6× 245 0.6× 81 0.2× 580 1.9× 90 1.6k
Philippe Rouger France 25 217 0.4× 192 0.4× 348 0.9× 286 0.7× 291 1.0× 125 2.0k

Countries citing papers authored by Ryo Sumazaki

Since Specialization
Citations

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

Fields of papers citing papers by Ryo Sumazaki

Since Specialization
Physical SciencesHealth SciencesLife SciencesSocial Sciences

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

Co-authorship network of co-authors of Ryo Sumazaki

This figure shows the co-authorship network connecting the top 25 collaborators of Ryo Sumazaki. A scholar is included among the top collaborators of Ryo Sumazaki 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 Ryo Sumazaki. Ryo Sumazaki 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.
Nishida, Nao, Masaya Sugiyama, Hiromi Sawai, et al.. (2018). Key HLA‐DRB1‐DQB1 haplotypes and role of the BTNL2 gene for response to a hepatitis B vaccine. Hepatology. 68(3). 848–858. 45 indexed citations
2.
Yamaoka, Yui, et al.. (2018). Hospital‐based care utilization of children with medical complexity in Japan. Pediatrics International. 60(7). 626–633. 7 indexed citations
3.
Fukushima, Hiroko, Takashi Fukushima, Ryoko Suzuki, et al.. (2018). Interinstitutional patient transfers between rapid chemotherapy cycles were feasible to utilize proton beam therapy for pediatric Ewing sarcoma family of tumors. Reports of Practical Oncology & Radiotherapy. 23(5). 442–450. 5 indexed citations
4.
Imagawa, Kazuo, Hisamitsu Hayashi, Ken Tanikawa, et al.. (2018). Clinical phenotype and molecular analysis of a homozygous ABCB11 mutation responsible for progressive infantile cholestasis. Journal of Human Genetics. 63(5). 569–577. 11 indexed citations
5.
Ohto, Tatsuyuki, Ryuta Tanaka, Mai Tanaka, et al.. (2017). Preaxial polydactyly in an individual with Wiedemann‐Steiner syndrome caused by a novel nonsense mutation in KMT2A. American Journal of Medical Genetics Part A. 173(10). 2821–2825. 9 indexed citations
6.
Mitani, Seiji, Kazuo Takayama, Yasuhito Nagamoto, et al.. (2017). Human ESC/iPSC-Derived Hepatocyte-like Cells Achieve Zone-Specific Hepatic Properties by Modulation of WNT Signaling. Molecular Therapy. 25(6). 1420–1433. 23 indexed citations
7.
Fukushima, Hiroko, et al.. (2017). The Partial Duplication of the 5′ Segment of KMT2A Revealed KMT2A ‐ MLLT10 Rearrangement in a Boy with Acute Myeloid Leukemia. SHILAP Revista de lepidopterología. 2017(1). 6257494–6257494. 1 indexed citations
8.
Yamaoka, Yui, et al.. (2015). Mental Health of Parents as Caregivers of Children with Disabilities: Based on Japanese Nationwide Survey. PLoS ONE. 10(12). e0145200–e0145200. 36 indexed citations
9.
Kawamura, Tetsuya, Joichi Usui, Takashi Ishizu, et al.. (2012). Primary membranoproliferative glomerulonephritis on the decline: decreased rate from the 1970s to the 2000s in Japan. Clinical and Experimental Nephrology. 17(2). 248–254. 10 indexed citations
10.
Miyagawa‐Hayashino, Aya, Hiroto Egawa, Tohru Yorifuji, et al.. (2009). Allograft Steatohepatitis in Progressive Familial Intrahepatic Cholestasis Type 1 After Living Donor Liver Transplantation. Liver Transplantation. 15(6). 610–618. 54 indexed citations
11.
Aoki, Takeshi, Yuri Matsumoto, Kenji Hirata, et al.. (2009). Expression profiling of genes related to asthma exacerbations. Clinical & Experimental Allergy. 39(2). 213–221. 57 indexed citations
12.
Miyamoto, Tomoyuki, Hitoshi Horigome, Satoru Kawano, & Ryo Sumazaki. (2008). Apical Hypertrophic Cardiomyopathy in Childhood: A Long-Term Follow-Up Report of Two Cases. Pediatric Cardiology. 30(3). 343–346. 2 indexed citations
13.
Kanegane, Hirokazu, Yoshikiyo Ito, Koichi Ohshima, et al.. (2005). X-linked lymphoproliferative syndrome presenting with systemic lymphocytic vasculitis. American Journal of Hematology. 78(2). 130–133. 26 indexed citations
14.
Sumazaki, Ryo, Nobuyoshi Shiojiri, Shigemi Isoyama, et al.. (2003). Conversion of biliary system to pancreatic tissue in Hes1-deficient mice. Nature Genetics. 36(1). 83–87. 178 indexed citations
15.
Sumazaki, Ryo, et al.. (1998). Natural course of HGV infection in haemophiliacs. British Journal of Haematology. 102(2). 616–621. 15 indexed citations
16.
Sumazaki, Ryo. (1997). Gene analysis in Δ^4-3-oxosteroid 5β-reductase deficiency. The Lancet. 1(9048). 329. 3 indexed citations
17.
Matsubara, Takako, et al.. (1996). Patent Ductus Venosus Associated with Tumor‐Like Lesions of the Liver in a Young Girl. Journal of Pediatric Gastroenterology and Nutrition. 22(1). 107–111. 2 indexed citations
18.
Matsubara, Takako, et al.. (1996). Genotyping of Hepatitis C Virus: Coinfection by Multiple Genotypes Detected in Children with Chronic Posttransfusion Hepatitis C. Journal of Pediatric Gastroenterology and Nutrition. 22(1). 79–84. 1 indexed citations
19.
Sumazaki, Ryo, et al.. (1996). Rapidly progressive hepatitis C in a patient with common variable immunodeficiency. European Journal of Pediatrics. 155(7). 532–534. 12 indexed citations
20.
Matsubara, Takako, Ryo Sumazaki, & Hitoshi Takita. (1995). Mother-to-infant transmission of hepatitis C virus: A prospective study. European Journal of Pediatrics. 154(12). 973–978. 46 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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