Tomofumi Osako

14.5k total citations · 1 hit paper
42 papers, 12.1k citations indexed

About

Tomofumi Osako is a scholar working on Oncology, Cancer Research and Pathology and Forensic Medicine. According to data from OpenAlex, Tomofumi Osako has authored 42 papers receiving a total of 12.1k indexed citations (citations by other indexed papers that have themselves been cited), including 32 papers in Oncology, 24 papers in Cancer Research and 9 papers in Pathology and Forensic Medicine. Recurrent topics in Tomofumi Osako's work include Breast Cancer Treatment Studies (21 papers), HER2/EGFR in Cancer Research (16 papers) and Breast Lesions and Carcinomas (8 papers). Tomofumi Osako is often cited by papers focused on Breast Cancer Treatment Studies (21 papers), HER2/EGFR in Cancer Research (16 papers) and Breast Lesions and Carcinomas (8 papers). Tomofumi Osako collaborates with scholars based in Japan and United States. Tomofumi Osako's co-authors include Reiki Nishimura, Nobuyuki Arima, Yasuo Toyozumi, Rumiko Tashima, Yasuyuki Nishiyama, Mamiko Fujisue, Masahiro Nakano, Yasuhiro Okumura, Mitsuhiro Hayashi and Makoto Kubo and has published in prestigious journals such as Journal of Clinical Oncology, PLoS ONE and Cancer Research.

In The Last Decade

Tomofumi Osako

41 papers receiving 12.0k 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.

Evaluation of Factors Related to Late Recurrence - Later than 10 Years after the Initial Treatment - in Primary Breast Cancer

2013 11.1k citations Reiki Nishimura, Tomofumi Osako et al. Oncology profile →

Peers

Tomofumi Osako

ONCOL

PRM

GENET

Yasuo Toyozumi Japan

Mamiko Fujisue Japan

Rumiko Tashima Japan

Øystein Fluge Norway

Nobuyuki Arima Japan

Anne‐Lise Børresen‐Dale Norway

Reiki Nishimura Japan

Chad Livasy United States

Yasuyuki Nishiyama Japan

Philip S. Bernard United States

Yasuo Toyozumi Japan

Tomofumi Osako

5.8k ×1.0

ONCOL

5.5k ×1.0

5.2k ×1.0

2.2k ×1.0

PRM

1.5k ×1.0

GENET

Citations per year, relative to Tomofumi Osako Tomofumi Osako (= 1×) peers Yasuo Toyozumi

Countries citing papers authored by Tomofumi Osako

Since Specialization

Citations

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

Fields of papers citing papers by Tomofumi Osako

Since Specialization

Physical SciencesHealth SciencesLife SciencesSocial Sciences

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

Co-authorship network of co-authors of Tomofumi Osako

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

Kai, Masaya, Mai Yamada, Tomofumi Osako, et al.. (2023). Granzyme B Expression in the Tumor Microenvironment as a Prognostic Biomarker for Patients with Triple-Negative Breast Cancer. Cancers. 15(18). 4456–4456. 9 indexed citations

Takahashi, Masato, Tomofumi Osako, Hiroyuki Yasojima, et al.. (2023). Overall survival in Japanese patients with ER+/HER2− advanced breast cancer treated with first-line palbociclib plus letrozole. Breast Cancer. 31(1). 53–62. 2 indexed citations

Takahashi, Masato, Shoichiro Ohtani, Shigenori E. Nagai, et al.. (2020). The efficacy and safety of pertuzumab plus trastuzumab and docetaxel as a first-line therapy in Japanese patients with inoperable or recurrent HER2-positive breast cancer: the COMACHI study. Breast Cancer Research and Treatment. 185(1). 125–134. 7 indexed citations

Kubo, Makoto, Masaya Kai, Hitomi Mori, et al.. (2020). Microsatellite instability in Japanese female patients with triple-negative breast cancer. Breast Cancer. 27(3). 490–498. 18 indexed citations

Mori, Hitomi, Makoto Kubo, Masaya Kai, et al.. (2019). T-bet+ lymphocytes infiltration as an independent better prognostic indicator for triple-negative breast cancer. Breast Cancer Research and Treatment. 176(3). 569–577. 23 indexed citations

Ogiya, Akiko, Rie Horii, Tadahiko Shien, et al.. (2016). Post-relapse survival in patients with the early and late distant recurrence in estrogen receptor-positive HER2-negative breast cancer. Breast Cancer. 24(3). 473–482. 13 indexed citations

Shien, Tadahiko, Akiko Ogiya, Naoko Ishida, et al.. (2016). Differences in expression of the cancer stem cell marker aldehyde dehydrogenase 1 among estrogen receptor-positive/human epidermal growth factor receptor type 2-negative breast cancer cases with early, late, and no recurrence. Breast Cancer Research. 18(1). 73–73. 28 indexed citations

Yamashita, Hiroko, Akiko Ogiya, Tadahiko Shien, et al.. (2015). Clinicopathological factors predicting early and late distant recurrence in estrogen receptor-positive, HER2-negative breast cancer. Breast Cancer. 23(6). 830–843. 34 indexed citations

Arima, Nobuyuki, Reiki Nishimura, Tomofumi Osako, et al.. (2015). A Comparison of the Hot Spot and the Average Cancer Cell Counting Methods and the Optimal Cutoff Point of the Ki-67 Index for Luminal Type Breast Cancer. Oncology. 90(1). 43–50. 13 indexed citations

10.

Osako, Tomofumi, Reiki Nishimura, Yasuyuki Nishiyama, & Mamiko Fujisue. (2015). Pertuzumab for the treatment of patients with human epidermal growth factor receptor 2-positive breast cancer in Japan. Molecular and Clinical Oncology. 3(6). 1268–1274. 2 indexed citations

11.

Osako, Tomofumi, Reiki Nishimura, Yasuyuki Nishiyama, et al.. (2015). Efficacy of intraoperative entire-circumferential frozen section analysis of lumpectomy margins during breast-conserving surgery for breast cancer. International Journal of Clinical Oncology. 20(6). 1093–1101. 35 indexed citations

12.

Nishimura, Reiki, Tomofumi Osako, Yasuhiro Okumura, et al.. (2013). Definition of p53 overexpression and its association with the clinicopathological features in luminal/HER2-negative breast cancer.. PubMed. 33(9). 3891–7. 30 indexed citations

13.

Nishimura, Reiki, Tomofumi Osako, Yasuyuki Nishiyama, et al.. (2013). Evaluation of Factors Related to Late Recurrence - Later than 10 Years after the Initial Treatment - in Primary Breast Cancer. Oncology. 85(2). 100–110. 11102 indexed citations breakdown →

14.

Kubo, Makoto, Noriko Kanaya, Jingjing Ye, et al.. (2012). Inhibition of the proliferation of acquired aromatase inhibitor-resistant breast cancer cells by histone deacetylase inhibitor LBH589 (panobinostat). Breast Cancer Research and Treatment. 137(1). 93–107. 44 indexed citations

15.

Nishimura, Reiki, Tomofumi Osako, Yasuhiro Okumura, et al.. (2012). Mucocele-like tumor associated with ductal carcinoma in situ diagnosed as mucinous carcinoma by fine-needle aspiration cytology: report of a case. Surgery Today. 42(3). 280–284. 4 indexed citations

16.

Nishimura, Reiki, Tomofumi Osako, Yasuhiro Okumura, et al.. (2011). Changes in the ER, PgR, HER2, p53 and Ki-67 biological markers between primary and recurrent breast cancer: discordance rates and prognosis. World Journal of Surgical Oncology. 9(1). 131–131. 84 indexed citations

17.

Osako, Tomofumi, Reiki Nishimura, Yasuhiro Okumura, Yasuo Toyozumi, & Nobuyuki Arima. (2011). Predictive significance of the proportion of ER-positive or PgR-positive tumor cells in response to neoadjuvant chemotherapy for operable HER2-negative breast cancer. Experimental and Therapeutic Medicine. 3(1). 66–71. 11 indexed citations

18.

Nishimura, Reiki, Tomofumi Osako, Yasuhiro Okumura, et al.. (2010). Ki-67 as a prognostic marker according to breast cancer subtype and a predictor of recurrence time in primary breast cancer. Experimental and Therapeutic Medicine. 1(5). 747–754. 133 indexed citations

19.

Kawamura, Yuichiro, et al.. (2005). A Case of Early Cancer in the Gastric Duplication Cyst. The Japanese Journal of Gastroenterological Surgery. 38(11). 1709–1715. 3 indexed citations

20.

Osako, Tomofumi, et al.. (2004). A Case of the Tuberculous Peritonitis that Developed Torsion of the Small Intestine. The Japanese Journal of Gastroenterological Surgery. 37(8). 1458–1462.

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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