Ken Yamaji

6.4k total citations
135 papers, 1.3k citations indexed

About

Ken Yamaji is a scholar working on Rheumatology, Immunology and Hematology. According to data from OpenAlex, Ken Yamaji has authored 135 papers receiving a total of 1.3k indexed citations (citations by other indexed papers that have themselves been cited), including 67 papers in Rheumatology, 28 papers in Immunology and 21 papers in Hematology. Recurrent topics in Ken Yamaji's work include Systemic Lupus Erythematosus Research (35 papers), Rheumatoid Arthritis Research and Therapies (27 papers) and Autoimmune and Inflammatory Disorders Research (13 papers). Ken Yamaji is often cited by papers focused on Systemic Lupus Erythematosus Research (35 papers), Rheumatoid Arthritis Research and Therapies (27 papers) and Autoimmune and Inflammatory Disorders Research (13 papers). Ken Yamaji collaborates with scholars based in Japan, United States and Canada. Ken Yamaji's co-authors include Naoto Tamura, Yoshinari Takasaki, Asako Chiba, Sachiko Miyake, Kurisu Tada, Goh Murayama, Hiroshi Tsuda, Yoshiyuki Abe, Hiroshi Hashimoto and Makio Kusaoi and has published in prestigious journals such as SHILAP Revista de lepidopterología, Scientific Reports and Frontiers in Immunology.

In The Last Decade

Ken Yamaji

118 papers receiving 1.3k citations

Peers

Countries citing papers authored by Ken Yamaji

Since Specialization

Citations

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

Fields of papers citing papers by Ken Yamaji

Since Specialization

Physical SciencesHealth SciencesLife SciencesSocial Sciences

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

Co-authorship network of co-authors of Ken Yamaji

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

#	Work	Indexed citations
1	Cell‐Free and Concentrated Ascites Reinfusion Therapy ( CART ) Shows Enhanced Efficacy in Gynecological Cancer Patients: A Post‐Marketing Surveillance Study 2025 ·Therapeutic Apheresis and Dialysis ·(unknown), Takashi Hirayama, (unknown), (unknown), (unknown), (unknown), Toshiyuki Okumura, (unknown), (unknown), (unknown), (unknown), Makio Kusaoi, Ken Yamaji, Yasuhisa Terao	0
2	Fatal intrahepatic haemorrhage in a patient with rheumatoid vasculitis: an autopsy case report 2025 ·Modern Rheumatology Case Reports ·(unknown), Yoshiyuki Abe, Mariko Hara, (unknown), (unknown), (unknown), (unknown), Kurisu Tada, (unknown), Yuki Fukumura, Ken Yamaji, Naoto Tamura	0
3	Avacopan may not independently reduce ANCA titres in ANCA-associated vasculitis: a retrospective analysis of 57 patients 2025 ·Lara D. Veeken ·(unknown), Yoshiyuki Abe, (unknown), (unknown), Ken Yamaji, Naoto Tamura	0
4	Efficacy of adding belimumab to hydroxychloroquine for patients with serologically active clinically quiescent in systemic lupus erythematosus: A retrospective study 2025 ·Lupus ·(unknown), (unknown), (unknown), Etsuro Nakanishi, (unknown), Hirofumi Amano, Ken Yamaji, Naoto Tamura	0
5	Prevalence of systemic lupus erythematosus and age-stratified treatment trends in the Japanese population: A cross-sectional study based on the National Database of Health Insurance Claims 2025 ·Modern Rheumatology ·Masakazu Matsushita, Ryoko Sakai, Naoto Yokogawa, Masaki Shimizu, Yuzaburo Inoue, Eisuke Inoue, Ken Yamaji, Masaaki Mori, Takako Miyamae	2
6	SLE-DAS remission and low disease activity were similarly associated with patient-reported outcomes compared with definition of remission in SLE remission and lupus low disease activity state 2025 ·Lara D. Veeken ·Etsuro Nakanishi, Masakazu Matsushita, (unknown), Kurisu Tada, (unknown), Makio Kusaoi, Hirofumi Amano, (unknown), Shinji Morimoto, Keigo Ikeda, Satoshi Suzuki, (unknown), (unknown), (unknown), (unknown), Hiroshi Tsushima, (unknown), Shuko Nojiri, Ken Yamaji, Naoto Tamura	0
7	Retrospective Study of 68 Patients with Rheumatoid Arthritis-associated Lymphoproliferative Diseases Treated with Methotrexate 2025 ·Internal Medicine ·(unknown), Yoshiyuki Abe, Ken Yamaji, Naoto Tamura	0
8	Analysis of the appropriate dose of hydroxychloroquine in systemic lupus erythematosus in Japan 2025 ·Modern Rheumatology ·(unknown), (unknown), (unknown), Etsuro Nakanishi, (unknown), (unknown), Hirofumi Amano, Ken Yamaji, Naoto Tamura	1
9	Autologous concentrated bone marrow injection for precollapse osteonecrosis of the femoral head concurrent with contralateral total hip arthroplasty: protocol for a clinical trial 2024 ·BMJ Open ·Yasuhiro Homma, (unknown), Ken Tashiro, Yoshiki Okada, (unknown), Taiji Watari, (unknown), Tomonori Baba, (unknown), Naotake Yanagisawa, Hiroshi Ohtsu, (unknown), Jun Ando, Ken Yamaji, Naoto Tamura, Muneaki Ishijima	0
10	Nationwide epidemiological survey of juvenile idiopathic arthritis during transition to young adulthood in Japan using the National Database of Designated Incurable Diseases of Japan 2024 ·Modern Rheumatology ·Yuzaburo Inoue, Ryoko Sakai, Eisuke Inoue, (unknown), Masaki Shimizu, Takahiko Sugihara, Masakazu Matsushita, Ken Yamaji, Masaaki Mori, Naoki Shimojo, (unknown)	1
11	Performance of classification and diagnostic criteria for IgG4-related disease and comparison of patients with and without IgG4-related disease 2023 ·Scientific Reports ·(unknown), Yoshiyuki Abe, (unknown), (unknown), Ken Yamaji, Naoto Tamura	7
12	Anisakiasis in the Upper Esophagus: A Case Report 2023 ·Medicina ·(unknown), Takashi Murakami, Hiroya Ueyama, Tomoyoshi Shibuya, Mariko Hojo, Ken Yamaji, Akihito Nagahara	2
13	Critical role of lectin pathway mediated by MBL-associated serine proteases in complement activation for the pathogenesis in systemic lupus erythematosus 2023 ·Heliyon ·(unknown), (unknown), Masakazu Matsushita, Makio Kusaoi, Yoshiyuki Abe, Ken Yamaji, Naoto Tamura	5
14	Changes in anti-MDA5 antibody titres and serum cytokine levels before and after diagnosis of anti-MDA5 antibody-positive dermatomyositis 2022 ·Lara D. Veeken ·(unknown), Yoshiyuki Abe, (unknown), (unknown), Ken Yamaji, Naoto Tamura	16
15	Enhanced IFN-α production is associated with increased TLR7 retention in the lysosomes of palasmacytoid dendritic cells in systemic lupus erythematosus 2017 ·Arthritis Research & Therapy ·Goh Murayama, (unknown), Asako Chiba, Ken Yamaji, Naoto Tamura, Sachiko Miyake	54
16	Elevated serum levels of soluble CD146 in patients with systemic sclerosis 2016 ·Clinical Rheumatology ·Tomoko Ito, Naoto Tamura, (unknown), Kurisu Tada, Masakazu Matsushita, Ken Yamaji, Kazunori Kato, Yoshinari Takasaki	19
17	Long‐term Clinical Outcomes of Synchronized Therapy With Plasmapheresis and Intravenous Cyclophosphamide Pulse Therapy in the Treatment of Steroid‐resistant Lupus Nephritis 2008 ·Therapeutic Apheresis and Dialysis ·Ken Yamaji, Young‐Joon Kim, Hiroshi Tsuda, Yoshinari Takasaki	16
18	Immunoadsorption Plasmapheresis Using a Phenylalanine Column as an Effective Treatment for Lupus Nephritis 2006 ·Therapeutic Apheresis and Dialysis ·Kaoru Sugimoto, Ken Yamaji, (unknown), (unknown), Hiroshi Tsuda, Hiroshi Hashimoto	21
19	Plasma Adsorption in Critical Care 2002 ·Therapeutic Apheresis ·(unknown), (unknown), Ken Yamaji, Hiroshi Tsuda, Hiroshi Hashimoto	19
20	[Distribution of ampicillin-dicloxacillin combination in the body (author's transl)]. 1974 ·PubMed ·(unknown), Ken Yamaji, Y. Sugiyama	1

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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