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D-Index & Metrics

Discipline name D-Index World Ranking Current World Ranking National Ranking Current National Ranking Publications Citations
Medicine 81 16414 15436 517 486 769 34308

Narikazu Boku publications per year

The chart shows the history of publications by Narikazu Boku between 1993 and 2026, highlighting the no. of papers published in each year and offering an overview of the publication velocity of this scholar. Narikazu Boku published across 34 years, from 1993 to 2026, averaging 23.9 papers a year. Output peaked at 65 publications in 2019. 20 of the 811 publications appeared in the last two years.

No. of publications
20 40 60
Bar chart. Horizontal axis: year, 1993 to 2026. Vertical axis: number of publications, 0 to 65. Peak 65 publications in 2019. 1993: 1 publication 1994: 1 publication 1995: 3 publications 1996: 6 publications 1997: 3 publications 1998: 7 publications 1999: 9 publications 2000: 10 publications 2001: 8 publications 2002: 7 publications 2003: 10 publications 2004: 7 publications 2005: 10 publications 2006: 9 publications 2007: 14 publications 2008: 19 publications 2009: 29 publications 2010: 18 publications 2011: 29 publications 2012: 41 publications 2013: 31 publications 2014: 26 publications 2015: 48 publications 2016: 42 publications 2017: 57 publications 2018: 56 publications 2019: 65 publications 2020: 57 publications 2021: 59 publications 2022: 37 publications 2023: 48 publications 2024: 24 publications 2025: 19 publications 2026: 1 publication
1993 2026

811 publications in total across all disciplines

View publications per year as a table
Narikazu Boku: publications per year, 1993 to 2026
Year Publications
1993 1
1994 1
1995 3
1996 6
1997 3
1998 7
1999 9
2000 10
2001 8
2002 7
2003 10
2004 7
2005 10
2006 9
2007 14
2008 19
2009 29
2010 18
2011 29
2012 41
2013 31
2014 26
2015 48
2016 42
2017 57
2018 56
2019 65
2020 57
2021 59
2022 37
2023 48
2024 24
2025 19
2026 1
Total 811
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Narikazu Boku publication distribution in Medicine in 2026

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

No. of scientists
200 400 600 800
Bar chart with 86 bars. Horizontal axis: publications, 101–120 to 1,796+. Vertical axis: number of scientists, 0 to 922. Most scientists, 922, have 341–360 publications. The last bar groups every scientist with 1,796 publications or more. The highlighted bar, 761–780 publications, is where this scientist sits. 101–120 publications: 5 scientists 121–140 publications: 26 scientists 141–160 publications: 73 scientists 161–180 publications: 155 scientists 181–200 publications: 230 scientists 201–220 publications: 363 scientists 221–240 publications: 487 scientists 241–260 publications: 545 scientists 261–280 publications: 722 scientists 281–300 publications: 768 scientists 301–320 publications: 834 scientists 321–340 publications: 895 scientists 341–360 publications: 922 scientists 361–380 publications: 838 scientists 381–400 publications: 861 scientists 401–420 publications: 918 scientists 421–440 publications: 806 scientists 441–460 publications: 771 scientists 461–480 publications: 751 scientists 481–500 publications: 713 scientists 501–520 publications: 617 scientists 521–540 publications: 610 scientists 541–560 publications: 537 scientists 561–580 publications: 504 scientists 581–600 publications: 509 scientists 601–620 publications: 396 scientists 621–640 publications: 386 scientists 641–660 publications: 371 scientists 661–680 publications: 340 scientists 681–700 publications: 336 scientists 701–720 publications: 307 scientists 721–740 publications: 259 scientists 741–760 publications: 230 scientists 761–780 publications: 228 scientists 781–800 publications: 217 scientists 801–820 publications: 204 scientists 821–840 publications: 186 scientists 841–860 publications: 177 scientists 861–880 publications: 155 scientists 881–900 publications: 139 scientists 901–920 publications: 145 scientists 921–940 publications: 116 scientists 941–960 publications: 133 scientists 961–980 publications: 91 scientists 981–1,000 publications: 96 scientists 1,001–1,020 publications: 77 scientists 1,021–1,040 publications: 70 scientists 1,041–1,060 publications: 63 scientists 1,061–1,080 publications: 77 scientists 1,081–1,100 publications: 49 scientists 1,101–1,120 publications: 54 scientists 1,121–1,140 publications: 49 scientists 1,141–1,160 publications: 51 scientists 1,161–1,180 publications: 35 scientists 1,181–1,200 publications: 39 scientists 1,201–1,220 publications: 26 scientists 1,221–1,240 publications: 37 scientists 1,241–1,260 publications: 36 scientists 1,261–1,280 publications: 27 scientists 1,281–1,300 publications: 32 scientists 1,301–1,320 publications: 28 scientists 1,321–1,340 publications: 17 scientists 1,341–1,360 publications: 30 scientists 1,361–1,380 publications: 28 scientists 1,381–1,400 publications: 17 scientists 1,401–1,420 publications: 21 scientists 1,421–1,440 publications: 15 scientists 1,441–1,460 publications: 12 scientists 1,461–1,480 publications: 12 scientists 1,481–1,500 publications: 18 scientists 1,501–1,520 publications: 14 scientists 1,521–1,540 publications: 17 scientists 1,541–1,560 publications: 15 scientists 1,561–1,580 publications: 6 scientists 1,581–1,600 publications: 2 scientists 1,601–1,620 publications: 12 scientists 1,621–1,640 publications: 11 scientists 1,641–1,660 publications: 8 scientists 1,661–1,680 publications: 5 scientists 1,681–1,700 publications: 5 scientists 1,701–1,720 publications: 10 scientists 1,721–1,740 publications: 12 scientists 1,741–1,760 publications: 14 scientists 1,761–1,780 publications: 6 scientists 1,781–1,795 publications: 5 scientists 1,796+ publications: 100 scientists
101–120 publications 1,796+

This scientist: 769 publications — 85th percentile

85% of scientists in this discipline score the same or lower.

The last bar groups every scientist with 1,796 publications or more.

View publications distribution as a table
Number of Medicine scientists by publication count, Research.com 2026 ranking edition. Based on 20,134 ranked scientists.
Publications Scientists This scientist
101–120 5
121–140 26
141–160 73
161–180 155
181–200 230
201–220 363
221–240 487
241–260 545
261–280 722
281–300 768
301–320 834
321–340 895
341–360 922
361–380 838
381–400 861
401–420 918
421–440 806
441–460 771
461–480 751
481–500 713
501–520 617
521–540 610
541–560 537
561–580 504
581–600 509
601–620 396
621–640 386
641–660 371
661–680 340
681–700 336
701–720 307
721–740 259
741–760 230
761–780 228 769
781–800 217
801–820 204
821–840 186
841–860 177
861–880 155
881–900 139
901–920 145
921–940 116
941–960 133
961–980 91
981–1,000 96
1,001–1,020 77
1,021–1,040 70
1,041–1,060 63
1,061–1,080 77
1,081–1,100 49
1,101–1,120 54
1,121–1,140 49
1,141–1,160 51
1,161–1,180 35
1,181–1,200 39
1,201–1,220 26
1,221–1,240 37
1,241–1,260 36
1,261–1,280 27
1,281–1,300 32
1,301–1,320 28
1,321–1,340 17
1,341–1,360 30
1,361–1,380 28
1,381–1,400 17
1,401–1,420 21
1,421–1,440 15
1,441–1,460 12
1,461–1,480 12
1,481–1,500 18
1,501–1,520 14
1,521–1,540 17
1,541–1,560 15
1,561–1,580 6
1,581–1,600 2
1,601–1,620 12
1,621–1,640 11
1,641–1,660 8
1,661–1,680 5
1,681–1,700 5
1,701–1,720 10
1,721–1,740 12
1,741–1,760 14
1,761–1,780 6
1,781–1,795 5
1,796+ 100
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Narikazu Boku D-index placement in Medicine in 2026

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

No. of scientists
250 500 750 1,000
Bar chart with 75 bars. Horizontal axis: D-Index, 70–71 to 217+. Vertical axis: number of scientists, 0 to 1,027. Most scientists, 1,027, have 82–83 D-Index. The last bar groups every scientist with 217 D-Index or more. The highlighted bar, 80–81 D-Index, is where this scientist sits. 70–71 D-Index: 226 scientists 72–73 D-Index: 391 scientists 74–75 D-Index: 574 scientists 76–77 D-Index: 730 scientists 78–79 D-Index: 891 scientists 80–81 D-Index: 972 scientists 82–83 D-Index: 1,027 scientists 84–85 D-Index: 1,003 scientists 86–87 D-Index: 960 scientists 88–89 D-Index: 970 scientists 90–91 D-Index: 922 scientists 92–93 D-Index: 839 scientists 94–95 D-Index: 808 scientists 96–97 D-Index: 779 scientists 98–99 D-Index: 668 scientists 100–101 D-Index: 611 scientists 102–103 D-Index: 630 scientists 104–105 D-Index: 513 scientists 106–107 D-Index: 541 scientists 108–109 D-Index: 445 scientists 110–111 D-Index: 429 scientists 112–113 D-Index: 399 scientists 114–115 D-Index: 393 scientists 116–117 D-Index: 318 scientists 118–119 D-Index: 302 scientists 120–121 D-Index: 287 scientists 122–123 D-Index: 255 scientists 124–125 D-Index: 256 scientists 126–127 D-Index: 252 scientists 128–129 D-Index: 230 scientists 130–131 D-Index: 179 scientists 132–133 D-Index: 168 scientists 134–135 D-Index: 163 scientists 136–137 D-Index: 159 scientists 138–139 D-Index: 134 scientists 140–141 D-Index: 134 scientists 142–143 D-Index: 118 scientists 144–145 D-Index: 109 scientists 146–147 D-Index: 106 scientists 148–149 D-Index: 74 scientists 150–151 D-Index: 79 scientists 152–153 D-Index: 80 scientists 154–155 D-Index: 87 scientists 156–157 D-Index: 57 scientists 158–159 D-Index: 74 scientists 160–161 D-Index: 69 scientists 162–163 D-Index: 60 scientists 164–165 D-Index: 53 scientists 166–167 D-Index: 39 scientists 168–169 D-Index: 42 scientists 170–171 D-Index: 32 scientists 172–173 D-Index: 39 scientists 174–175 D-Index: 40 scientists 176–177 D-Index: 28 scientists 178–179 D-Index: 19 scientists 180–181 D-Index: 23 scientists 182–183 D-Index: 31 scientists 184–185 D-Index: 18 scientists 186–187 D-Index: 20 scientists 188–189 D-Index: 22 scientists 190–191 D-Index: 13 scientists 192–193 D-Index: 21 scientists 194–195 D-Index: 12 scientists 196–197 D-Index: 12 scientists 198–199 D-Index: 14 scientists 200–201 D-Index: 15 scientists 202–203 D-Index: 13 scientists 204–205 D-Index: 10 scientists 206–207 D-Index: 8 scientists 208–209 D-Index: 4 scientists 210–211 D-Index: 12 scientists 212–213 D-Index: 11 scientists 214–215 D-Index: 10 scientists 216 D-Index: 4 scientists 217+ D-Index: 98 scientists
70–71 D-Index 217+

This scientist: 81 D-Index — 19th percentile

19% of scientists in this discipline score the same or lower.

The last bar groups every scientist with 217 D-Index or more.

View D-Index distribution as a table
Number of Medicine scientists by D-index, Research.com 2026 ranking edition. Based on 20,134 ranked scientists.
D-Index Scientists This scientist
70–71 226
72–73 391
74–75 574
76–77 730
78–79 891
80–81 972 81
82–83 1,027
84–85 1,003
86–87 960
88–89 970
90–91 922
92–93 839
94–95 808
96–97 779
98–99 668
100–101 611
102–103 630
104–105 513
106–107 541
108–109 445
110–111 429
112–113 399
114–115 393
116–117 318
118–119 302
120–121 287
122–123 255
124–125 256
126–127 252
128–129 230
130–131 179
132–133 168
134–135 163
136–137 159
138–139 134
140–141 134
142–143 118
144–145 109
146–147 106
148–149 74
150–151 79
152–153 80
154–155 87
156–157 57
158–159 74
160–161 69
162–163 60
164–165 53
166–167 39
168–169 42
170–171 32
172–173 39
174–175 40
176–177 28
178–179 19
180–181 23
182–183 31
184–185 18
186–187 20
188–189 22
190–191 13
192–193 21
194–195 12
196–197 12
198–199 14
200–201 15
202–203 13
204–205 10
206–207 8
208–209 4
210–211 12
212–213 11
214–215 10
216 4
217+ 98
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Overview

Narikazu Boku is affiliated with St. Marianna University School of Medicine in Japan and has a research focus primarily within the field of Medicine. Their work spans multiple subfields, including Pulmonary and Respiratory Medicine, Oncology, Surgery, Gastroenterology, and Epidemiology.

The scientist's research covers several major topics such as:

  • Gastric Cancer Management and Outcomes
  • Colorectal Cancer Treatments and Studies
  • Gastrointestinal Tumor Research and Treatment
  • Metastasis and carcinoma case studies
  • Cancer Immunotherapy and Biomarkers
  • Esophageal Cancer Research and Treatment
  • Cancer Treatment and Pharmacology

Narikazu Boku has published extensively in leading oncology and medical journals. Frequent publication venues include:

  • Journal of Clinical Oncology
  • Gastric Cancer
  • Annals of Oncology
  • International Journal of Clinical Oncology
  • Research Square

Collaborations are also a notable aspect of their academic work. Prominent frequent co-authors include:

  • Masanori Terashima
  • Takaki Yoshikawa
  • Atsuo Takashima
  • Hirokazu Shoji
  • Ken Kato

Among the recent papers authored or co-authored by Narikazu Boku are:

  • "Nivolumab plus chemotherapy versus placebo plus chemotherapy in patients with HER2-negative, untreated, unresectable advanced or recurrent gastric or gastro-oesophageal junction cancer (ATTRACTION-4): a randomised, multicentre, double-blind, placebo-controlled, phase 3 trial", 2022, The Lancet Oncology
  • "Phase III Trial of Avelumab Maintenance After First-Line Induction Chemotherapy Versus Continuation of Chemotherapy in Patients With Gastric Cancers: Results From JAVELIN Gastric 100", 2020, Journal of Clinical Oncology
  • "Randomized, Phase II Study of Trastuzumab Beyond Progression in Patients With HER2-Positive Advanced Gastric or Gastroesophageal Junction Cancer: WJOG7112G (T-ACT Study)", 2020, Journal of Clinical Oncology
  • "Gastrectomy with or without neoadjuvant S-1 plus cisplatin for type 4 or large type 3 gastric cancer (JCOG0501): an open-label, phase 3, randomized controlled trial", 2020, Gastric Cancer
  • "LBA7_PR Nivolumab plus chemotherapy versus chemotherapy alone in patients with previously untreated advanced or recurrent gastric/gastroesophageal junction (G/GEJ) cancer: ATTRACTION-4 (ONO-4538-37) study", 2020, Annals of Oncology

Best Publications

  • Japanese Society for Cancer of the Colon and Rectum (JSCCR) guidelines 2010 for the treatment of colorectal cancer

    Toshiaki Watanabe;Michio Itabashi;Yasuhiro Shimada;Shinji Tanaka

  • Nivolumab in patients with advanced gastric or gastro-oesophageal junction cancer refractory to, or intolerant of, at least two previous chemotherapy regimens (ONO-4538-12, ATTRACTION-2): a randomised, double-blind, placebo-controlled, phase 3 trial

    Yoon Koo Kang;Narikazu Boku;Taroh Satoh;Min Hee Ryu

  • Adjuvant chemotherapy of S-1 versus gemcitabine for resected pancreatic cancer: a phase 3, open-label, randomised, non-inferiority trial (JASPAC 01)

    Katsuhiko Uesaka;Narikazu Boku;Akira Fukutomi;Yukiyasu Okamura

  • Randomized Phase III Study of Gemcitabine Plus S-1, S-1 Alone, or Gemcitabine Alone in Patients With Locally Advanced and Metastatic Pancreatic Cancer in Japan and Taiwan: GEST Study

    Hideki Ueno;Tatsuya Ioka;Masafumi Ikeda;Shinichi Ohkawa

  • Fluorouracil versus combination of irinotecan plus cisplatin versus S-1 in metastatic gastric cancer: a randomised phase 3 study.

    Narikazu Boku;Seiichiro Yamamoto;Haruhiko Fukuda;Kuniaki Shirao

  • Japanese Society for Cancer of the Colon and Rectum (JSCCR) Guidelines 2014 for treatment of colorectal cancer

    Toshiaki Watanabe;Michio Itabashi;Yasuhiro Shimada;Shinji Tanaka

  • Randomized Phase III Trial of Fluorouracil Alone Versus Fluorouracil Plus Cisplatin Versus Uracil and Tegafur Plus Mitomycin in Patients With Unresectable, Advanced Gastric Cancer: The Japan Clinical Oncology Group Study (JCOG9205)

    Atsushi Ohtsu;Yasuhiro Shimada;Kuniaki Shirao;Narikazu Boku

  • Randomized, Open-Label, Phase III Study Comparing Irinotecan With Paclitaxel in Patients With Advanced Gastric Cancer Without Severe Peritoneal Metastasis After Failure of Prior Combination Chemotherapy Using Fluoropyrimidine Plus Platinum: WJOG 4007 Trial

    Shuichi Hironaka;Shinya Ueda;Hirofumi Yasui;Tomohiro Nishina

  • New endoscopic treatment for intramucosal gastric tumors using an insulated-tip diathermic knife.

    M. Ohkuwa;K. Hosokawa;N. Boku;A. Ohtu

  • Phase III, randomised trial of avelumab versus physician's choice of chemotherapy as third-line treatment of patients with advanced gastric or gastro-oesophageal junction cancer: primary analysis of JAVELIN Gastric 300.

    Yung Jue Bang;E. Yañez Ruiz;E. Van Cutsem;K. W. Lee

  • Definitive Chemoradiotherapy for T4 and/or M1 Lymph Node Squamous Cell Carcinoma of the Esophagus

    Atsushi Ohtsu;Narikazu Boku;Kei Muro;Keisho Chin

  • Long-Term Toxicity After Definitive Chemoradiotherapy for Squamous Cell Carcinoma of the Thoracic Esophagus

    Satoshi Ishikura;Keiji Nihei;Atsushi Ohtsu;Narikazu Boku

  • Phase II Study of a Combination of Irinotecan and Cisplatin Against Metastatic Gastric Cancer

    Narikazu Boku;Atsushi Ohtsu;Yasuhiro Shimada;Kuniaki Shirao

  • HER2-positive gastric cancer.

    Narikazu Boku

  • Esophageal stenosis after endoscopic mucosal resection of superficial esophageal lesions

    Chikatoshi Katada;Manabu Muto;Tetsuro Manabe;Narikazu Boku

  • Phase II study of chemoradiotherapy with 5-fluorouracil and cisplatin for Stage II-III esophageal squamous cell carcinoma: JCOG trial (JCOG 9906).

    Ken Kato;Kei Muro;Keiko Minashi;Atsushi Ohtsu

  • Phase I/II study of S-1 combined with cisplatin in patients with advanced gastric cancer

    W Koizumi;S Tanabe;K Saigenji;A Ohtsu

  • A new technique for endoscopic mucosal resection with an insulated-tip electrosurgical knife improves the completeness of resection of intramucosal gastric neoplasms

    Shin'ichi Miyamoto;Manabu Muto;Yasuo Hamamoto;Narikazu Boku

  • Olaparib in combination with paclitaxel in patients with advanced gastric cancer who have progressed following first-line therapy (GOLD): a double-blind, randomised, placebo-controlled, phase 3 trial

    Yung Jue Bang;Rui Hua Xu;Keisho Chin;Keun Wook Lee

  • Comparison of HER2 gene amplification assessed by fluorescence in situ hybridization and HER2 protein expression assessed by immunohistochemistry in gastric cancer.

    Tomonori Yano;Toshihiko Doi;Atsushi Ohtsu;Narikazu Boku

Frequent Co-Authors

Atsushi Ohtsu
Atsushi Ohtsu Juntendo University
Kei Muro
Kei Muro National Cancer Research Institute, UK
Mitsuru Sasako
Mitsuru Sasako Hyogo College of Medicine
Satoshi Morita
Satoshi Morita Kyoto University
Takuji Okusaka
Takuji Okusaka National Cancer Centre
Takayuki Yoshino
Takayuki Yoshino University of Tsukuba
Junji Furuse
Junji Furuse Kyorin University
Toshihiko Doi
Toshihiko Doi Okayama University
Yoon-Koo Kang
Yoon-Koo Kang Asan Medical Center
Kazuto Nishio
Kazuto Nishio Kindai University

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