World's Best Scientists 2026 revealed!

D-Index & Metrics

Discipline name D-Index World Ranking Current World Ranking National Ranking Current National Ranking Publications Citations
Medicine 81 16545 15562 229 226 276 26554

Alex Iranzo publications per year

The chart shows the history of publications by Alex Iranzo between 1997 and 2025, highlighting the no. of papers published in each year and offering an overview of the publication velocity of this scholar. Alex Iranzo published across 29 years, from 1997 to 2025, averaging 9.9 papers a year. Output peaked at 24 publications in 2021. 29 of the 287 publications appeared in the last two years.

No. of publications
5 10 15 20
Bar chart. Horizontal axis: year, 1997 to 2025. Vertical axis: number of publications, 0 to 24. Peak 24 publications in 2021. 1997: 2 publications 1998: 0 publications 1999: 2 publications 2000: 1 publication 2001: 1 publication 2002: 9 publications 2003: 5 publications 2004: 3 publications 2005: 4 publications 2006: 4 publications 2007: 12 publications 2008: 3 publications 2009: 6 publications 2010: 13 publications 2011: 13 publications 2012: 5 publications 2013: 9 publications 2014: 18 publications 2015: 12 publications 2016: 17 publications 2017: 19 publications 2018: 16 publications 2019: 12 publications 2020: 13 publications 2021: 24 publications 2022: 16 publications 2023: 19 publications 2024: 22 publications 2025: 7 publications
1997 2025

287 publications in total across all disciplines

View publications per year as a table
Alex Iranzo: publications per year, 1997 to 2025
Year Publications
1997 2
1998 0
1999 2
2000 1
2001 1
2002 9
2003 5
2004 3
2005 4
2006 4
2007 12
2008 3
2009 6
2010 13
2011 13
2012 5
2013 9
2014 18
2015 12
2016 17
2017 19
2018 16
2019 12
2020 13
2021 24
2022 16
2023 19
2024 22
2025 7
Total 287
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Alex Iranzo 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 Alex Iranzo 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, 261–280 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: 276 publications — 12th percentile

12% 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
261–280 722 276
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
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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Alex Iranzo 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 Alex Iranzo 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

Alex Iranzo is affiliated with the University of Barcelona in Spain and has a research focus primarily within Medicine and Neuroscience. Their work bridges multiple subfields including Neurology, Cognitive Neuroscience, Experimental and Cognitive Psychology, Epidemiology, and Physiology.

The scientist's research topics encompass a range of neurological and sleep-related areas such as Parkinson's Disease mechanisms and treatments, sleep and wakefulness research, sleep and related disorders, neurological disorders and treatments, restless legs syndrome research, olfactory and sensory function studies, and circadian rhythm and melatonin.

Frequent publication venues for their work include Alzheimer's & Dementia, Sleep Medicine, The Lancet Neurology, SLEEP, and the Journal of Neurology. These outlets reflect a strong focus on neurodegenerative diseases and sleep disorders.

Recent notable papers authored by Alex Iranzo cover observational and diagnostic studies related to sleep and neurodegenerative disorders. These include:

  • Detection of α-synuclein in CSF by RT-QuIC in patients with isolated rapid-eye-movement sleep behaviour disorder: a longitudinal observational study, 2021, The Lancet Neurology
  • Biomarkers of conversion to α-synucleinopathy in isolated rapid-eye-movement sleep behaviour disorder, 2021, The Lancet Neurology
  • Alpha-synuclein seeds in olfactory mucosa of patients with isolated REM sleep behaviour disorder, 2021, Brain
  • Video-polysomnography procedures for diagnosis of rapid eye movement sleep behavior disorder (RBD) and the identification of its prodromal stages: guidelines from the International RBD Study Group, 2021, SLEEP
  • Association between insomnia and cognitive performance, gray matter volume, and white matter microstructure in cognitively unimpaired adults, 2020, Alzheimer's Research & Therapy

Collaboration is a significant aspect of Iranzo's work, with frequent co-authors including Joan Santamaría, Carles Gaig, Mónica Serradell, Birgit Högl, and Amaia Muñoz-Lopetegi. These collaborators have contributed to multiple joint publications, indicating ongoing research partnerships in related fields.

Best Publications

  • Diagnosis and management of dementia with Lewy bodies Fourth consensus report of the DLB Consortium

    Ian G. McKeith;Bradley F. Boeve;Dennis W. DIckson;Glenda Halliday

  • Rapid-eye-movement sleep behaviour disorder as an early marker for a neurodegenerative disorder: a descriptive study

    Alex Iranzo;José Luis Molinuevo;Joan Santamaría;Mónica Serradell

  • Risk and predictors of dementia and parkinsonism in idiopathic REM sleep behaviour disorder: a multicentre study

    Ronald B Postuma;Alex Iranzo;Michele Hu;Birgit Högl

  • Neurodegenerative disease status and post-mortem pathology in idiopathic rapid-eye-movement sleep behaviour disorder: an observational cohort study

    Alex Iranzo;Eduard Tolosa;Ellen Gelpi;José Luis Molinuevo

  • A genetic risk factor for periodic limb movements in sleep

    Hreinn Stefansson;David B. Rye;Andrew Hicks;Hjorvar Petursson

  • The Parkinson's progression markers initiative (PPMI): establishing a PD biomarker cohort

    Kenneth Marek;Sohini Chowdhury;Andrew Siderowf;Shirley Lasch

  • A novel non-rapid-eye movement and rapid-eye-movement parasomnia with sleep breathing disorder associated with antibodies to IgLON5: a case series, characterisation of the antigen, and post-mortem study

    Lidia Sabater;Carles Gaig;Ellen Gelpi;Luis Bataller

  • Neurodegenerative disorder risk in idiopathic REM sleep behavior disorder: study in 174 patients.

    Alex Iranzo;Ana Fernández-Arcos;Eduard Tolosa;Mónica Serradell

  • Decreased striatal dopamine transporter uptake and substantia nigra hyperechogenicity as risk markers of synucleinopathy in patients with idiopathic rapid-eye-movement sleep behaviour disorder: a prospective study

    Alex Iranzo;Francisco Lomeña;Heike Stockner;Francesc Valldeoriola

  • Severe obstructive sleep apnea/hypopnea mimicking REM sleep behavior disorder.

    Alex Iranzo;Joan Santamaría

  • REM sleep behaviour disorder.

    Yves Dauvilliers;Carlos H. Schenck;Ronald B. Postuma;Alex Iranzo

  • A single-question screen for rapid eye movement sleep behavior disorder: a multicenter validation study.

    Ronald B. Postuma;Isabelle Arnulf;Birgit Hogl;Alex Iranzo

  • Characteristics of idiopathic REM sleep behavior disorder and that associated with MSA and PD

    A. Iranzo;J. Santamaría;D. B. Rye;F. Valldeoriola

  • Clinicopathologic correlations in 172 cases of rapid eye movement sleep behavior disorder with or without a coexisting neurologic disorder.

    B. F. Boeve;M. H. Silber;T. J. Ferman;S. C. Lin

  • Normative EMG values during REM sleep for the diagnosis of REM sleep behavior disorder.

    Birgit Frauscher;Alex Iranzo;Carles Gaig;Viola Gschliesser

  • Clinical manifestations of the anti-IgLON5 disease.

    Carles Gaig;Francesc Graus;Yarko Compta;Birgit Högl

  • The clinical and pathophysiological relevance of REM sleep behavior disorder in neurodegenerative diseases.

    Alex Iranzo;Joan Santamaria;Eduard Tolosa

  • Prevalence and clinical importance of sleep apnea in the first night after cerebral infarction

    A. Iranzo;J. Santamaría;J. Berenguer;M. Sánchez

  • Risk factors for neurodegeneration in idiopathic rapid eye movement sleep behavior disorder: A multicenter study

    Ronald B. Postuma;Alex Iranzo;Birgit Hogl;Isabelle Arnulf

  • Serial dopamine transporter imaging of nigrostriatal function in patients with idiopathic rapid-eye-movement sleep behaviour disorder: a prospective study.

    Alex Iranzo;Francesc Valldeoriola;Francisco Lomeña;José Luis Molinuevo

Frequent Co-Authors

Joan Santamaria
Joan Santamaria University of Barcelona
Birgit Högl
Birgit Högl Innsbruck Medical University
Eduardo Tolosa
Eduardo Tolosa University of Barcelona
Yves Dauvilliers
Yves Dauvilliers University of Montpellier
Werner Poewe
Werner Poewe Innsbruck Medical University
Francesc Graus
Francesc Graus University of Barcelona
Giuseppe Plazzi
Giuseppe Plazzi University of Bologna
Francesc Valldeoriola
Francesc Valldeoriola University of Barcelona
Isabelle Arnulf
Isabelle Arnulf Sorbonne University

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