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Hiromitsu Kumada

Hiromitsu Kumada

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Microbiology
Japan
2026

D-Index & Metrics

Discipline name D-Index World Ranking Current World Ranking National Ranking Current National Ranking Publications Citations
Microbiology 100 402 363 9 7 693 39139
Medicine 103 7327 6885 178 170 806 41525

Hiromitsu Kumada publications per year

The chart shows the history of publications by Hiromitsu Kumada between 1970 and 2025, highlighting the no. of papers published in each year and offering an overview of the publication velocity of this scholar. Hiromitsu Kumada published across 56 years, from 1970 to 2025, averaging 14.6 papers a year. Output peaked at 37 publications in 2013. 7 of the 816 publications appeared in the last two years.

No. of publications
10 20 30
Bar chart. Horizontal axis: year, 1970 to 2025. Vertical axis: number of publications, 0 to 37. Peak 37 publications in 2013. 1970: 1 publication 1971: 0 publications 1972: 0 publications 1973: 0 publications 1974: 0 publications 1975: 0 publications 1976: 1 publication 1977: 1 publication 1978: 1 publication 1979: 0 publications 1980: 1 publication 1981: 2 publications 1982: 1 publication 1983: 1 publication 1984: 4 publications 1985: 1 publication 1986: 5 publications 1987: 5 publications 1988: 9 publications 1989: 3 publications 1990: 5 publications 1991: 9 publications 1992: 6 publications 1993: 13 publications 1994: 13 publications 1995: 12 publications 1996: 11 publications 1997: 13 publications 1998: 13 publications 1999: 17 publications 2000: 13 publications 2001: 13 publications 2002: 14 publications 2003: 25 publications 2004: 32 publications 2005: 29 publications 2006: 27 publications 2007: 36 publications 2008: 33 publications 2009: 32 publications 2010: 32 publications 2011: 35 publications 2012: 36 publications 2013: 37 publications 2014: 37 publications 2015: 34 publications 2016: 23 publications 2017: 37 publications 2018: 26 publications 2019: 23 publications 2020: 25 publications 2021: 25 publications 2022: 15 publications 2023: 22 publications 2024: 5 publications 2025: 2 publications
1970 2025

816 publications in total across all disciplines

View publications per year as a table
Hiromitsu Kumada: publications per year, 1970 to 2025
Year Publications
1970 1
1971 0
1972 0
1973 0
1974 0
1975 0
1976 1
1977 1
1978 1
1979 0
1980 1
1981 2
1982 1
1983 1
1984 4
1985 1
1986 5
1987 5
1988 9
1989 3
1990 5
1991 9
1992 6
1993 13
1994 13
1995 12
1996 11
1997 13
1998 13
1999 17
2000 13
2001 13
2002 14
2003 25
2004 32
2005 29
2006 27
2007 36
2008 33
2009 32
2010 32
2011 35
2012 36
2013 37
2014 37
2015 34
2016 23
2017 37
2018 26
2019 23
2020 25
2021 25
2022 15
2023 22
2024 5
2025 2
Total 816
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Hiromitsu Kumada publication distribution in Microbiology in 2026

The chart shows the distribution of publications by all Research.com ranked scientists in the field of Microbiology in 2026. The highlighted bar marks where Hiromitsu Kumada sits on this spectrum.

No. of scientists
50 100 150 200 250
Bar chart with 64 bars. Horizontal axis: publications, 55–64 to 679+. Vertical axis: number of scientists, 0 to 288. Most scientists, 288, have 135–144 publications. The last bar groups every scientist with 679 publications or more. The highlighted bar, 679+ publications, is where this scientist sits. 55–64 publications: 8 scientists 65–74 publications: 29 scientists 75–84 publications: 55 scientists 85–94 publications: 112 scientists 95–104 publications: 137 scientists 105–114 publications: 190 scientists 115–124 publications: 235 scientists 125–134 publications: 234 scientists 135–144 publications: 288 scientists 145–154 publications: 265 scientists 155–164 publications: 264 scientists 165–174 publications: 253 scientists 175–184 publications: 276 scientists 185–194 publications: 190 scientists 195–204 publications: 234 scientists 205–214 publications: 208 scientists 215–224 publications: 198 scientists 225–234 publications: 155 scientists 235–244 publications: 161 scientists 245–254 publications: 160 scientists 255–264 publications: 146 scientists 265–274 publications: 139 scientists 275–284 publications: 148 scientists 285–294 publications: 115 scientists 295–304 publications: 96 scientists 305–314 publications: 88 scientists 315–324 publications: 106 scientists 325–334 publications: 65 scientists 335–344 publications: 76 scientists 345–354 publications: 64 scientists 355–364 publications: 62 scientists 365–374 publications: 65 scientists 375–384 publications: 61 scientists 385–394 publications: 34 scientists 395–404 publications: 44 scientists 405–414 publications: 36 scientists 415–424 publications: 35 scientists 425–434 publications: 29 scientists 435–444 publications: 33 scientists 445–454 publications: 34 scientists 455–464 publications: 25 scientists 465–474 publications: 26 scientists 475–484 publications: 20 scientists 485–494 publications: 19 scientists 495–504 publications: 16 scientists 505–514 publications: 17 scientists 515–524 publications: 23 scientists 525–534 publications: 14 scientists 535–544 publications: 14 scientists 545–554 publications: 18 scientists 555–564 publications: 12 scientists 565–574 publications: 7 scientists 575–584 publications: 9 scientists 585–594 publications: 9 scientists 595–604 publications: 9 scientists 605–614 publications: 7 scientists 615–624 publications: 9 scientists 625–634 publications: 7 scientists 635–644 publications: 4 scientists 645–654 publications: 5 scientists 655–664 publications: 6 scientists 665–674 publications: 7 scientists 675–678 publications: 3 scientists 679+ publications: 99 scientists
55–64 publications 679+

This scientist: 693 publications — 98th percentile

98% of scientists in this discipline score the same or lower.

The last bar groups every scientist with 679 publications or more.

View publications distribution as a table
Number of Microbiology scientists by publication count, Research.com 2026 ranking edition. Based on 5,513 ranked scientists.
Publications Scientists This scientist
55–64 8
65–74 29
75–84 55
85–94 112
95–104 137
105–114 190
115–124 235
125–134 234
135–144 288
145–154 265
155–164 264
165–174 253
175–184 276
185–194 190
195–204 234
205–214 208
215–224 198
225–234 155
235–244 161
245–254 160
255–264 146
265–274 139
275–284 148
285–294 115
295–304 96
305–314 88
315–324 106
325–334 65
335–344 76
345–354 64
355–364 62
365–374 65
375–384 61
385–394 34
395–404 44
405–414 36
415–424 35
425–434 29
435–444 33
445–454 34
455–464 25
465–474 26
475–484 20
485–494 19
495–504 16
505–514 17
515–524 23
525–534 14
535–544 14
545–554 18
555–564 12
565–574 7
575–584 9
585–594 9
595–604 9
605–614 7
615–624 9
625–634 7
635–644 4
645–654 5
655–664 6
665–674 7
675–678 3
679+ 99 693
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Hiromitsu Kumada D-index placement in Microbiology in 2026

The chart shows the D-index (discipline H-index) distribution of Microbiology scientists ranked by Research.com in 2026. The highlighted bar marks where Hiromitsu Kumada sits on this spectrum.

No. of scientists
50 100 150
Bar chart with 88 bars. Horizontal axis: D-Index, 40 to 127+. Vertical axis: number of scientists, 0 to 162. Most scientists, 162, have 58 D-Index. The last bar groups every scientist with 127 D-Index or more. The highlighted bar, 100 D-Index, is where this scientist sits. 40 D-Index: 30 scientists 41 D-Index: 86 scientists 42 D-Index: 90 scientists 43 D-Index: 117 scientists 44 D-Index: 122 scientists 45 D-Index: 123 scientists 46 D-Index: 108 scientists 47 D-Index: 110 scientists 48 D-Index: 106 scientists 49 D-Index: 109 scientists 50 D-Index: 129 scientists 51 D-Index: 111 scientists 52 D-Index: 116 scientists 53 D-Index: 127 scientists 54 D-Index: 134 scientists 55 D-Index: 134 scientists 56 D-Index: 112 scientists 57 D-Index: 136 scientists 58 D-Index: 162 scientists 59 D-Index: 151 scientists 60 D-Index: 139 scientists 61 D-Index: 123 scientists 62 D-Index: 126 scientists 63 D-Index: 144 scientists 64 D-Index: 109 scientists 65 D-Index: 103 scientists 66 D-Index: 124 scientists 67 D-Index: 112 scientists 68 D-Index: 103 scientists 69 D-Index: 131 scientists 70 D-Index: 94 scientists 71 D-Index: 93 scientists 72 D-Index: 96 scientists 73 D-Index: 92 scientists 74 D-Index: 80 scientists 75 D-Index: 66 scientists 76 D-Index: 87 scientists 77 D-Index: 60 scientists 78 D-Index: 73 scientists 79 D-Index: 59 scientists 80 D-Index: 57 scientists 81 D-Index: 55 scientists 82 D-Index: 47 scientists 83 D-Index: 77 scientists 84 D-Index: 50 scientists 85 D-Index: 45 scientists 86 D-Index: 42 scientists 87 D-Index: 41 scientists 88 D-Index: 32 scientists 89 D-Index: 38 scientists 90 D-Index: 35 scientists 91 D-Index: 34 scientists 92 D-Index: 27 scientists 93 D-Index: 26 scientists 94 D-Index: 33 scientists 95 D-Index: 22 scientists 96 D-Index: 37 scientists 97 D-Index: 22 scientists 98 D-Index: 21 scientists 99 D-Index: 22 scientists 100 D-Index: 30 scientists 101 D-Index: 16 scientists 102 D-Index: 20 scientists 103 D-Index: 17 scientists 104 D-Index: 19 scientists 105 D-Index: 16 scientists 106 D-Index: 19 scientists 107 D-Index: 18 scientists 108 D-Index: 14 scientists 109 D-Index: 10 scientists 110 D-Index: 9 scientists 111 D-Index: 7 scientists 112 D-Index: 11 scientists 113 D-Index: 6 scientists 114 D-Index: 15 scientists 115 D-Index: 10 scientists 116 D-Index: 12 scientists 117 D-Index: 7 scientists 118 D-Index: 10 scientists 119 D-Index: 10 scientists 120 D-Index: 11 scientists 121 D-Index: 2 scientists 122 D-Index: 7 scientists 123 D-Index: 12 scientists 124 D-Index: 5 scientists 125 D-Index: 9 scientists 126 D-Index: 6 scientists 127+ D-Index: 95 scientists
40 D-Index 127+

This scientist: 100 D-Index — 93rd percentile

93% of scientists in this discipline score the same or lower.

The last bar groups every scientist with 127 D-Index or more.

View D-Index distribution as a table
Number of Microbiology scientists by D-index, Research.com 2026 ranking edition. Based on 5,513 ranked scientists.
D-Index Scientists This scientist
40 30
41 86
42 90
43 117
44 122
45 123
46 108
47 110
48 106
49 109
50 129
51 111
52 116
53 127
54 134
55 134
56 112
57 136
58 162
59 151
60 139
61 123
62 126
63 144
64 109
65 103
66 124
67 112
68 103
69 131
70 94
71 93
72 96
73 92
74 80
75 66
76 87
77 60
78 73
79 59
80 57
81 55
82 47
83 77
84 50
85 45
86 42
87 41
88 32
89 38
90 35
91 34
92 27
93 26
94 33
95 22
96 37
97 22
98 21
99 22
100 30 100
101 16
102 20
103 17
104 19
105 16
106 19
107 18
108 14
109 10
110 9
111 7
112 11
113 6
114 15
115 10
116 12
117 7
118 10
119 10
120 11
121 2
122 7
123 12
124 5
125 9
126 6
127+ 95
Download as CSV

Research.com Recognitions

  • 2026 - Research.com Microbiology in Japan Leader Award
  • 2025 - Research.com Microbiology in Japan Leader Award
  • 2023 - Research.com Microbiology in Japan Leader Award
  • 2022 - Research.com Microbiology in Japan Leader Award

Overview

Hiromitsu Kumada is affiliated with Fukuoka University in Japan and has an extensive record of research primarily in the field of medicine, with a specific focus on hepatology. Their work is strongly oriented towards the diagnosis, treatment, and prognosis of liver diseases, particularly hepatocellular carcinoma.

Their main fields of study include:

  • Medicine

Within this broad field, Kumada has contributed significantly to subfields such as:

  • Hepatology
  • Epidemiology
  • Oncology
  • Pulmonary and Respiratory Medicine
  • Endocrinology, Diabetes and Metabolism

Their research topics demonstrate specific interests in:

  • Liver Disease Diagnosis and Treatment
  • Hepatocellular Carcinoma Treatment and Prognosis
  • Hepatitis C virus research
  • Hepatitis B Virus Studies
  • Liver Disease and Transplantation
  • Pancreatic and Hepatic Oncology Research
  • Cancer Immunotherapy and Biomarkers

Kumada's frequent collaborators include:

  • Fumitaka Suzuki
  • Tetsuya Hosaka
  • Norio Akuta
  • Yusuke Kawamura
  • Hitomi Sezaki

Their research has been published extensively in a range of venues, notably:

  • Hepatology Research
  • Oncology
  • Journal of Clinical Oncology
  • Internal Medicine
  • Journal of Gastroenterology

Recent representative papers authored or coauthored by Kumada include:

  • Phase Ib Study of Lenvatinib Plus Pembrolizumab in Patients With Unresectable Hepatocellular Carcinoma, 2020, Journal of Clinical Oncology
  • Lenvatinib plus pembrolizumab versus lenvatinib plus placebo for advanced hepatocellular carcinoma (LEAP-002): a randomised, double-blind, phase 3 trial, 2023, The Lancet Oncology
  • Molecular signatures of long-term hepatocellular carcinoma risk in nonalcoholic fatty liver disease, 2022, Science Translational Medicine
  • A phase Ib study of lenvatinib (LEN) plus nivolumab (NIV) in patients (pts) with unresectable hepatocellular carcinoma (uHCC): Study 117., 2020, Journal of Clinical Oncology
  • A phase Ib study of lenvatinib (LEN) plus pembrolizumab (PEMBRO) in unresectable hepatocellular carcinoma (uHCC)., 2020, Journal of Clinical Oncology

Best Publications

  • Gene Expression in Fixed Tissues and Outcome in Hepatocellular Carcinoma

    Yujin Hoshida;Augusto Villanueva;Masahiro Kobayashi;Judit Peix

  • Integrative transcriptome analysis reveals common molecular subclasses of human hepatocellular carcinoma.

    Yujin Hoshida;Sebastian M.B. Nijman;Sebastian M.B. Nijman;Masahiro Kobayashi;Jennifer A. Chan;Jennifer A. Chan

  • Phase Ib Study of Lenvatinib Plus Pembrolizumab in Patients With Unresectable Hepatocellular Carcinoma

    Richard S. Finn;Masafumi Ikeda;Andrew X. Zhu;Max W. Sung

  • Long‐term entecavir treatment reduces hepatocellular carcinoma incidence in patients with hepatitis B virus infection

    Tetsuya Hosaka;Fumitaka Suzuki;Masahiro Kobayashi;Yuya Seko

  • The long-term pathological evolution of chronic hepatitis C

    M Yano;H Kumada;M Kage;K Ikeda

  • Effects of Oral Branched-Chain Amino Acid Granules on Event-Free Survival in Patients With Liver Cirrhosis

    Yasutoshi Muto;Shunichi Sato;Akiharu Watanabe;Hisataka Moriwaki

  • Phase III study of sorafenib after transarterial chemoembolisation in Japanese and Korean patients with unresectable hepatocellular carcinoma.

    Masatoshi Kudo;Kazuho Imanaka;Nobuyuki Chida;Kohei Nakachi

  • Effect of interferon therapy on hepatocellular carcinogenesis in patients with chronic hepatitis type C: A long-term observation study of 1,643 patients using statistical bias correction with proportional hazard analysis.

    Kenji Ikeda;Satoshi Saitoh;Yasuji Arase;Kazuaki Chayama

  • Daclatasvir plus asunaprevir for chronic HCV genotype 1b infection.

    Hiromitsu Kumada;Yoshiyuki Suzuki;Kenji Ikeda;Joji Toyota

  • Disease progression and hepatocellular carcinogenesis in patients with chronic viral hepatitis: a prospective observation of 2215 patients

    Kenji Ikeda;Satoshi Saitoh;Yoshiyuki Suzuki;Masahiro Kobayashi

  • A genome-wide association study identifies variants in the HLA-DP locus associated with chronic hepatitis B in Asians

    Yoichiro Kamatani;Sukanya Wattanapokayakit;Hidenori Ochi;Takahisa Kawaguchi

  • Emergence and takeover of YMDD motif mutant hepatitis B virus during long-term lamivudine therapy and re-takeover by wild type after cessation of therapy

    Kazuaki Chayama;Yoshiyuki Suzuki;Masahiro Kobayashi;Mizuho Kobayashi

  • Interferon beta prevents recurrence of hepatocellular carcinoma after complete resection or ablation of the primary tumor—A prospective randomized study of hepatitis C virus–related liver cancer

    Kenji Ikeda;Yasuji Arase;Satoshi Saitoh;Masahiro Kobayashi

  • Combining clinical, pathology, and gene expression data to predict recurrence of hepatocellular carcinoma.

    Augusto Villanueva;Augusto Villanueva;Yujin Hoshida;Yujin Hoshida;Carlo Battiston;Victoria Tovar;Victoria Tovar

  • Dual therapy with the nonstructural protein 5A inhibitor, daclatasvir, and the nonstructural protein 3 protease inhibitor, asunaprevir, in hepatitis C virus genotype 1b–infected null responders†‡§

    Kazuaki Chayama;Shoichi Takahashi;Joji Toyota;Yoshiyasu Karino

  • The long term efficacy of glycyrrhizin in chronic hepatitis C patients

    Unknown

  • Ectopic lymphoid structures function as microniches for tumor progenitor cells in hepatocellular carcinoma

    Shlomi Finkin;Detian Yuan;Ilan Stein;Koji Taniguchi

  • Phase 2 study of lenvatinib in patients with advanced hepatocellular carcinoma.

    Kenji Ikeda;Masatoshi Kudo;Seiji Kawazoe;Yukio Osaki

  • Predictive factors of early and sustained responses to peginterferon plus ribavirin combination therapy in Japanese patients infected with hepatitis C virus genotype 1b: Amino acid substitutions in the core region and low-density lipoprotein cholesterol levels

    Norio Akuta;Fumitaka Suzuki;Yusuke Kawamura;Hiromi Yatsuji

  • Association of Amino Acid Substitution Pattern in Core Protein of Hepatitis C Virus Genotype 1b High Viral Load and Non-Virological Response to Interferon-Ribavirin Combination Therapy

    Norio Akuta;Fumitaka Suzuki;Hitomi Sezaki;Yoshiyuki Suzuki

  • Amino acid substitution in hepatitis C virus core region and genetic variation near the interleukin 28B gene predict viral response to telaprevir with peginterferon and ribavirin

    Norio Akuta;Fumitaka Suzuki;Miharu Hirakawa;Yusuke Kawamura

Frequent Co-Authors

Kenji Ikeda
Kenji Ikeda University of California, San Francisco
Yasuji Arase
Yasuji Arase University of Yamanashi
Masahiro Kobayashi
Masahiro Kobayashi Toranomon Hospital
Yoshiyuki Suzuki
Yoshiyuki Suzuki Fukushima Medical University
Fumitaka Suzuki
Fumitaka Suzuki Toranomon Hospital
Satoshi Saitoh
Satoshi Saitoh Toranomon Hospital
Tetsuya Hosaka
Tetsuya Hosaka Toranomon Hospital
Hitomi Sezaki
Hitomi Sezaki Toranomon Hospital
Mariko Kobayashi
Mariko Kobayashi Kaohsiung Medical University
Kazuaki Chayama
Kazuaki Chayama Hiroshima University

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