Hiroshi Koga

11.8k total citations · 4 hit papers
157 papers, 6.8k citations indexed

About

Hiroshi Koga is a scholar working on Epidemiology, Oncology and Dermatology. According to data from OpenAlex, Hiroshi Koga has authored 157 papers receiving a total of 6.8k indexed citations (citations by other indexed papers that have themselves been cited), including 45 papers in Epidemiology, 42 papers in Oncology and 33 papers in Dermatology. Recurrent topics in Hiroshi Koga's work include Cutaneous Melanoma Detection and Management (34 papers), Nonmelanoma Skin Cancer Studies (19 papers) and Autophagy in Disease and Therapy (17 papers). Hiroshi Koga is often cited by papers focused on Cutaneous Melanoma Detection and Management (34 papers), Nonmelanoma Skin Cancer Studies (19 papers) and Autophagy in Disease and Therapy (17 papers). Hiroshi Koga collaborates with scholars based in Japan, United States and France. Hiroshi Koga's co-authors include Ana María Cuervo, Susmita Kaushik, Toshiaki Saida, Esperanza Arias, David Sulzer, Marta Martínez‐Vicente, Esther Wong, Seigo Suzue, Tsutomu Irikura and Hisashi Uhara and has published in prestigious journals such as Proceedings of the National Academy of Sciences, Journal of Biological Chemistry and Nature Communications.

In The Last Decade

Hiroshi Koga

145 papers receiving 6.6k 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.

Cargo recognition failure is responsible for inefficient autophagy in Huntington's disease

2010 681 citations Guomei Tang, Hiroshi Koga et al. profile →
HDAC6 controls autophagosome maturation essential for ubiquitin‐selective quality‐control autophagy

2010 612 citations Hiroshi Koga, Ana María Cuervo et al. profile →
Interplay of LRRK2 with chaperone-mediated autophagy

2013 484 citations Samantha J. Orenstein, Sheng‐Han Kuo et al. profile →
Structure-activity relationships of antibacterial 6,7- and 7,8-disubstituted 1-alkyl-1,4-dihydro-4-oxoquinoline-3-carboxylic acids

1980 410 citations Hiroshi Koga et al. profile →

Peers — A (Enhanced Table)

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

Name	h						Papers	Cites
Hiroshi Koga Japan	35	3.1k	2.7k	1.5k	1.1k	923	157	6.8k
Hugh Rosen United States	66	1.5k 0.5×	9.7k 3.6×	2.1k 1.5×	1.3k 1.3×	1.4k 1.5×	198	16.4k
Marta M. Lipinski United States	42	1.9k 0.6×	3.1k 1.1×	628 0.4×	1.1k 1.1×	744 0.8×	83	7.0k
Viktor I. Korolchuk United Kingdom	42	4.4k 1.4×	4.7k 1.7×	2.0k 1.4×	324 0.3×	2.2k 2.3×	84	9.8k
Ciro Isidoro Italy	43	1.9k 0.6×	2.9k 1.1×	872 0.6×	536 0.5×	803 0.9×	183	6.2k
Thierry Levade France	63	1.8k 0.6×	7.9k 2.9×	2.4k 1.7×	1.3k 1.2×	3.3k 3.6×	287	12.2k
Leon O. Murphy United States	25	1.8k 0.6×	6.6k 2.4×	1.3k 0.9×	1.2k 1.1×	993 1.1×	31	9.3k
Michael Su United States	32	884 0.3×	6.4k 2.4×	1.1k 0.8×	1.4k 1.3×	316 0.3×	50	8.8k
Birgit Schilling United States	52	887 0.3×	6.2k 2.3×	764 0.5×	808 0.8×	2.1k 2.2×	179	10.0k
Alexei Degterev United States	42	1.9k 0.6×	9.1k 3.4×	861 0.6×	1.5k 1.4×	720 0.8×	88	12.2k
Philippe P. Roux Canada	50	932 0.3×	10.5k 3.9×	2.2k 1.5×	1.9k 1.7×	1.3k 1.4×	105	15.4k

Countries citing papers authored by Hiroshi Koga

Since Specialization

Citations

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

Fields of papers citing papers by Hiroshi Koga

Since Specialization

Physical SciencesHealth SciencesLife SciencesSocial Sciences

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

Co-authorship network of co-authors of Hiroshi Koga

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

Fujisawa, Yasuhiro, Yasuo Yoshioka, Koji Yoshino, et al.. (2025). Secondary Publication of Japanese Dermatological Association Guidelines: Clinical Questions of Guidelines for Cutaneous Angiosarcoma 2025. The Journal of Dermatology. 52(10). e859–e875. 1 indexed citations

Koga, Hiroshi, et al.. (2023). Case report: Diagnostic clues for anti-3-hydroxy-3-methylglutaryl-coenzyme A reductase myopathy in pediatric patients. Frontiers in Pediatrics. 11. 1102539–1102539. 1 indexed citations

Koga, Hiroshi, et al.. (2022). Efficacy of Nivolumab and Ipilimumab Combined Therapy as a First-Line Therapy for Patients with Advanced Melanoma and the Urgent Need for an Effective Second-Line Therapy for Patients with Wild-Type BRAF in Japan: A Single Center Retrospective Study. The Kurume Medical Journal. 69(1.2). 75–80.

Ohtsuka, Mikio, Toshihisa Hamada, Tomomitsu Miyagaki, et al.. (2020). Outlines of the Japanese guidelines for the management of primary cutaneous lymphomas 2020. The Journal of Dermatology. 48(2). e49–e71. 12 indexed citations

Tsutsumida, Arata, Satoshi Fukushima, Kenji Yokota, et al.. (2019). Japanese real‐world study of sequential nivolumab and ipilimumab treament in melanoma. The Journal of Dermatology. 46(11). 947–955. 13 indexed citations

Nakamura, Yasuhiro, Jun Asai, Hiroshi Igaki, et al.. (2019). Japanese Dermatological Association Guidelines: Outlines of guidelines for cutaneous melanoma 2019. The Journal of Dermatology. 47(2). 89–103. 33 indexed citations

Namikawa, Kenjiro, Yoshio Kiyohara, Tatsuya Takenouchi, et al.. (2018). Efficacy and safety of nivolumab in combination with ipilimumab in Japanese patients with advanced melanoma: An open-label, single-arm, multicentre phase II study. European Journal of Cancer. 105. 114–126. 50 indexed citations

Ashida, Atsuko, et al.. (2015). Melanoma with BRAF Mutation in Circulating Cell-free DNA despite no Mutation in the Primary Lesion: A Case Report. Acta Dermato Venereologica. 96(1). 128–129. 6 indexed citations

Valdor, Rut, Enric Mocholí, Yaïr Botbol, et al.. (2014). Chaperone-mediated autophagy regulates T cell responses through targeted degradation of negative regulators of T cell activation. Nature Immunology. 15(11). 1046–1054. 165 indexed citations

10.

Rodríguez‐Muela, Natalia, Hiroshi Koga, Pedro de la Villa, et al.. (2013). Balance between autophagic pathways preserves retinal homeostasis. Aging Cell. 12(3). 478–488. 146 indexed citations

11.

Kuo, Sheng‐Han, Samantha J. Orenstein, Hiroshi Koga, et al.. (2013). LRRK2 G2019S Impairs Chaperone-Mediated Autophagy in Neurons (IN2-1.001). Neurology. 80(7_supplement). 2 indexed citations

12.

Uhara, Hisashi, Atsuko Ashida, Hiroshi Koga, et al.. (2013). NRAS mutations in primary and metastatic melanomas of Japanese patients. International Journal of Clinical Oncology. 19(3). 544–548. 26 indexed citations

13.

Saida, Toshiaki, Hiroshi Koga, Yasufumi Goto, & Hisashi Uhara. (2011). Characteristic Distribution of Melanin Columns in the Cornified Layer of Acquired Acral Nevus: An Important Clue for Histopathologic Differentiation From Early Acral Melanoma. American Journal of Dermatopathology. 33(5). 468–473. 21 indexed citations

14.

Koga, Hiroshi, et al.. (2010). Functional Cross-Talk between Rab14 and Rab4 through a Dual Effector, RUFY1/Rabip4. Molecular Biology of the Cell. 21(15). 2746–2755. 54 indexed citations

15.

Iyatomi, Hitoshi, Hiroshi Oka, M. Emre Celebi, et al.. (2008). Computer-Based Classification of Dermoscopy Images of Melanocytic Lesions on Acral Volar Skin. Journal of Investigative Dermatology. 128(8). 2049–2054. 60 indexed citations

16.

Ishizaki, Hironori, Shizuka Iida, Hiroshi Koga, Kazuhide Shimamatsu, & Kei Matsuoka. (2007). Epidermoid cyst of the ureter: A case report. International Journal of Urology. 14(5). 443–444. 6 indexed citations

17.

Koga, Hiroshi, et al.. (2007). Eccrine porocarcinoma: Clinical and pathological studies of 12 cases. The Journal of Dermatology. 34(8). 516–522. 61 indexed citations

18.

Koga, Hiroshi, Takayuki Ohshima, & Kunitada Shimotohno. (2004). Enhanced Activation of Tax-dependent Transcription of Human T-cell Leukemia Virus Type I (HTLV-I) Long Terminal Repeat by TORC3. Journal of Biological Chemistry. 279(51). 52978–52983. 31 indexed citations

19.

Koga, Hiroshi, et al.. (1998). Synthesis and vasorelaxant activity of 2-fluoromethylbenzopyran potassium channel openers. Bioorganic & Medicinal Chemistry. 6(3). 323–337. 7 indexed citations

20.

Imai, Yoshio, et al.. (1973). The Reaction of o-Aminobenzenesulfonamide with Phthalic Anhydride. NIPPON KAGAKU KAISHI. 1515–1519.

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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