Keiji Okinaka

1.4k total citations
43 papers, 516 citations indexed

About

Keiji Okinaka is a scholar working on Hematology, Epidemiology and Infectious Diseases. According to data from OpenAlex, Keiji Okinaka has authored 43 papers receiving a total of 516 indexed citations (citations by other indexed papers that have themselves been cited), including 16 papers in Hematology, 11 papers in Epidemiology and 10 papers in Infectious Diseases. Recurrent topics in Keiji Okinaka's work include Hematopoietic Stem Cell Transplantation (11 papers), Antifungal resistance and susceptibility (6 papers) and Acute Lymphoblastic Leukemia research (6 papers). Keiji Okinaka is often cited by papers focused on Hematopoietic Stem Cell Transplantation (11 papers), Antifungal resistance and susceptibility (6 papers) and Acute Lymphoblastic Leukemia research (6 papers). Keiji Okinaka collaborates with scholars based in Japan and United States. Keiji Okinaka's co-authors include Takahiro Fukuda, Takashi Tanaka, Saiko Kurosawa, Shigeo Fuji, Yoshihiro Inamoto, Takuya Yamashita, Ryuji Tanosaki, Kazunori Ohnishi, Takaaki Ono and Daisuke Yokota and has published in prestigious journals such as Blood, Emerging infectious diseases and Carcinogenesis.

In The Last Decade

Keiji Okinaka

42 papers receiving 512 citations

Peers — A (Enhanced Table)

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

Name	h						Papers	Cites
Keiji Okinaka Japan	13	191	144	124	73	69	43	516
Takashi Tanaka Japan	15	260 1.4×	60 0.4×	121 1.0×	87 1.2×	169 2.4×	62	658
Heinrich Lellek Germany	15	168 0.9×	249 1.7×	105 0.8×	135 1.8×	165 2.4×	21	637
Michaela Nováková Czechia	14	138 0.7×	131 0.9×	53 0.4×	170 2.3×	31 0.4×	35	556
Douglas P. Blackall United States	14	240 1.3×	140 1.0×	25 0.2×	48 0.7×	41 0.6×	47	590
Allen Farrand United States	10	122 0.6×	47 0.3×	42 0.3×	52 0.7×	48 0.7×	13	455
John Weiss United States	11	118 0.6×	120 0.8×	32 0.3×	92 1.3×	44 0.6×	18	441
Eduard Ling Israel	11	46 0.2×	182 1.3×	49 0.4×	54 0.7×	196 2.8×	31	572
T T Kuo Taiwan	16	40 0.2×	144 1.0×	162 1.3×	64 0.9×	167 2.4×	35	879
Praveen Sharma India	10	91 0.5×	55 0.4×	18 0.1×	46 0.6×	30 0.4×	58	305
Alejandra King Chile	16	41 0.2×	167 1.2×	73 0.6×	93 1.3×	126 1.8×	31	607

Countries citing papers authored by Keiji Okinaka

Since Specialization

Citations

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

Fields of papers citing papers by Keiji Okinaka

Since Specialization

Physical SciencesHealth SciencesLife SciencesSocial Sciences

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

Co-authorship network of co-authors of Keiji Okinaka

This figure shows the co-authorship network connecting the top 25 collaborators of Keiji Okinaka. A scholar is included among the top collaborators of Keiji Okinaka 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 Keiji Okinaka. Keiji Okinaka is excluded from the visualization to improve readability, since they are connected to all nodes in the network.

All Works

Sort: Min cites: Since: Top N: Style:

20 of 20 papers shown

Itoh, Naoya, Hanako Kurai, Ichiro Kawamura, et al.. (2023). A nationwide cross-sectional study using a web-based questionnaire survey of the duration of isolation of COVID-19 inpatients with cancer at Japanese cancer centers. Journal of Infection and Chemotherapy. 29(12). 1185–1188. 1 indexed citations

Okinaka, Keiji, Yoshitaka Inoue, Naoyuki Uchida, et al.. (2023). Clinical characteristics and risk factors of pneumococcal diseases in recipients of allogeneic hematopoietic stem cell transplants in the late phase: A retrospective registry study. Journal of Infection and Chemotherapy. 29(7). 726–730. 3 indexed citations

Inoue, Yoshitaka, Keiji Okinaka, Shigeo Fuji, et al.. (2021). Severe acute graft-versus-host disease increases the incidence of blood stream infection and mortality after allogeneic hematopoietic cell transplantation: Japanese transplant registry study. Bone Marrow Transplantation. 56(9). 2125–2136. 5 indexed citations

Yoshida, Tatsuya, Shigehiro Yagishita, Keiji Okinaka, et al.. (2021). Difference in SARS-CoV-2 Antibody Status Between Patients With Cancer and Health Care Workers During the COVID-19 Pandemic in Japan. JAMA Oncology. 7(8). 1141–1141. 28 indexed citations

Kimura, Shun‐ichi, Masaharu Tamaki, Keiji Okinaka, et al.. (2021). Cytomegalovirus reactivation is associated with an increased risk of late-onset invasive aspergillosis independently of grade II–IV acute graft-versus-host disease in allogeneic hematopoietic stem cell transplantation: JSTCT Transplant Complications Working Group. Annals of Hematology. 100(12). 3029–3038. 6 indexed citations

Yamashita, Chizuru, Yoshio Takesue, Kazuaki Matsumoto, et al.. (2020). Echinocandins versus non-echinocandins for empirical antifungal therapy in patients with hematological disease with febrile neutropenia: A systematic review and meta-analysis. Journal of Infection and Chemotherapy. 26(6). 596–603. 5 indexed citations

Fuji, Shigeo, Yoshihiro Inamoto, Saiko Kurosawa, et al.. (2019). Kinetics of neutrophil engraftment in allogeneic stem cell transplantation. PubMed. 2(2). 22–30.

Ito, Reiko, Yoshihiro Inamoto, Yoshitaka Inoue, et al.. (2018). Characterization of Late Acute and Chronic Graft-Versus-Host Disease according to the 2014 National Institutes of Health Consensus Criteria in Japanese Patients. Biology of Blood and Marrow Transplantation. 25(2). 293–300. 4 indexed citations

Inoue, Yoshitaka, Shigeo Fuji, Ryuji Tanosaki, et al.. (2018). Prognostic importance of pretransplant disease status for posttransplant outcomes in patients with adult T cell leukemia/lymphoma. Bone Marrow Transplantation. 53(9). 1105–1115. 14 indexed citations

10.

Fuji, Shigeo, Yasuhiro Tanaka, Tsuneaki Hirakawa, et al.. (2017). Clinical impact of hyperglycemia on days 0–7 after allogeneic stem cell transplantation. Bone Marrow Transplantation. 52(8). 1156–1163. 3 indexed citations

11.

Okinaka, Keiji, Yukihiro Akeda, Saiko Kurosawa, et al.. (2017). Pneumococcal polysaccharide vaccination in allogeneic hematopoietic stem cell transplantation recipients: a prospective single-center study. Microbes and Infection. 19(11). 553–559. 3 indexed citations

12.

Tanaka, Takashi, Yoshihiro Inamoto, Takuya Yamashita, et al.. (2016). Eltrombopag for Treatment of Thrombocytopenia after Allogeneic Hematopoietic Cell Transplantation. Biology of Blood and Marrow Transplantation. 22(5). 919–924. 63 indexed citations

13.

Inamoto, Yoshihiro, Kinuko Tajima, Takashi Tanaka, et al.. (2016). Association of Cumulative Steroid Dose with Risk of Infection after Treatment for Severe Acute Graft-versus-Host Disease. Biology of Blood and Marrow Transplantation. 22(6). 1102–1107. 33 indexed citations

14.

Ohashi, Masaki, Makoto Saka, Hiroshi Katayama, et al.. (2015). A Prospective Cohort Study To Evaluate the Feasibility of Intraoperative Antimicrobial Prophylaxis in Open Gastrectomy for Gastric Cancer. Surgical Infections. 16(6). 833–839. 4 indexed citations

15.

Inoue, Yoshitaka, Shigeo Fuji, Ryuji Tanosaki, et al.. (2015). Administration of Mogamulizumab before Allogeneic Hematopoietic Cell Transplantation Against ATLL Might Increase Risks of Acute Gvhd and Non-Relapse Mortality. Biology of Blood and Marrow Transplantation. 21(2). S198–S198. 1 indexed citations

16.

Fuji, Shigeo, Shinichiro Mori, Nobuhiro Hiramoto, et al.. (2015). Characteristics and outcomes of patients diagnosed with norovirus gastroenteritis after allogeneic hematopoietic stem cell transplantation based on immunochromatography. International Journal of Hematology. 102(1). 121–128. 14 indexed citations

17.

Hadano, Yoshiro, Norio Ohmagari, Jun Suzuki, et al.. (2011). [A case of pulmonary nocardiosis due to Nocardia cyriacigeorgica with prompt diagnosis by gram stain].. PubMed. 49(8). 592–6. 2 indexed citations

18.

Mochizuki, Takahiro, Tomoaki Sato, Keiji Okinaka, et al.. (2010). Efficacy and safety for vancomycin in uncomplicated catheter-related bloodstream infection by coagulase negative Staphylococcus. 58(3). 233–238. 1 indexed citations

19.

Nakamura, Sayaka, Keiji Okinaka, Tamiko Takemura, et al.. (2010). The FOXM1 transcriptional factor promotes the proliferation of leukemia cells through modulation of cell cycle progression in acute myeloid leukemia. Carcinogenesis. 31(11). 2012–2021. 88 indexed citations

20.

Nakamura, Satoki, Keiji Okinaka, Takaaki Ono, et al.. (2008). HOXA10 expression induced by Abl kinase inhibitors enhanced apoptosis through PI3K pathway in CML cells. Leukemia Research. 32(6). 962–971. 11 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