World's Best Scientists 2026 revealed!
Hiromitsu Kumada

Hiromitsu Kumada

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Microbiology
Japan
2026

D-Index & Metrics

Microbiology

D-Index
100
Citations
39139
World Ranking
402
National Ranking
9

Medicine

D-Index
103
Citations
41525
World Ranking
7327
National Ranking
178

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.

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 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.

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.

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.

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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