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D-Index & Metrics

Discipline name D-Index World Ranking Current World Ranking National Ranking Current National Ranking Publications Citations
Immunology 47 4558 4219 2053 1883 98 6409

Helena Reijonen publications per year

The chart shows the history of publications by Helena Reijonen between 1971 and 2026, highlighting the no. of papers published in each year and offering an overview of the publication velocity of this scholar. Helena Reijonen published across 56 years, from 1971 to 2026, averaging 2.1 papers a year. Output peaked at 9 publications in 1996. 5 of the 115 publications appeared in the last two years.

No. of publications
2 4 6 8
Bar chart. Horizontal axis: year, 1971 to 2026. Vertical axis: number of publications, 0 to 9. Peak 9 publications in 1996. 1971: 2 publications 1972: 2 publications 1973: 2 publications 1974: 1 publication 1975: 1 publication 1976: 0 publications 1977: 0 publications 1978: 0 publications 1979: 0 publications 1980: 0 publications 1981: 0 publications 1982: 0 publications 1983: 0 publications 1984: 0 publications 1985: 1 publication 1986: 0 publications 1987: 0 publications 1988: 0 publications 1989: 0 publications 1990: 2 publications 1991: 4 publications 1992: 2 publications 1993: 2 publications 1994: 3 publications 1995: 6 publications 1996: 9 publications 1997: 8 publications 1998: 4 publications 1999: 6 publications 2000: 7 publications 2001: 0 publications 2002: 4 publications 2003: 4 publications 2004: 3 publications 2005: 3 publications 2006: 2 publications 2007: 0 publications 2008: 3 publications 2009: 2 publications 2010: 5 publications 2011: 4 publications 2012: 3 publications 2013: 2 publications 2014: 1 publication 2015: 1 publication 2016: 1 publication 2017: 2 publications 2018: 0 publications 2019: 3 publications 2020: 1 publication 2021: 0 publications 2022: 0 publications 2023: 2 publications 2024: 2 publications 2025: 4 publications 2026: 1 publication
1971 2026

115 publications in total across all disciplines

View publications per year as a table
Helena Reijonen: publications per year, 1971 to 2026
Year Publications
1971 2
1972 2
1973 2
1974 1
1975 1
1976 0
1977 0
1978 0
1979 0
1980 0
1981 0
1982 0
1983 0
1984 0
1985 1
1986 0
1987 0
1988 0
1989 0
1990 2
1991 4
1992 2
1993 2
1994 3
1995 6
1996 9
1997 8
1998 4
1999 6
2000 7
2001 0
2002 4
2003 4
2004 3
2005 3
2006 2
2007 0
2008 3
2009 2
2010 5
2011 4
2012 3
2013 2
2014 1
2015 1
2016 1
2017 2
2018 0
2019 3
2020 1
2021 0
2022 0
2023 2
2024 2
2025 4
2026 1
Total 115
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Helena Reijonen publication distribution in Immunology in 2026

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

No. of scientists
50 100 150
Bar chart with 76 bars. Horizontal axis: publications, 62–71 to 807+. Vertical axis: number of scientists, 0 to 189. Most scientists, 189, have 152–161 publications. The last bar groups every scientist with 807 publications or more. The highlighted bar, 92–101 publications, is where this scientist sits. 62–71 publications: 9 scientists 72–81 publications: 23 scientists 82–91 publications: 40 scientists 92–101 publications: 72 scientists 102–111 publications: 86 scientists 112–121 publications: 108 scientists 122–131 publications: 150 scientists 132–141 publications: 160 scientists 142–151 publications: 159 scientists 152–161 publications: 189 scientists 162–171 publications: 166 scientists 172–181 publications: 181 scientists 182–191 publications: 188 scientists 192–201 publications: 187 scientists 202–211 publications: 178 scientists 212–221 publications: 158 scientists 222–231 publications: 168 scientists 232–241 publications: 159 scientists 242–251 publications: 160 scientists 252–261 publications: 148 scientists 262–271 publications: 116 scientists 272–281 publications: 125 scientists 282–291 publications: 115 scientists 292–301 publications: 111 scientists 302–311 publications: 95 scientists 312–321 publications: 97 scientists 322–331 publications: 97 scientists 332–341 publications: 99 scientists 342–351 publications: 96 scientists 352–361 publications: 69 scientists 362–371 publications: 76 scientists 372–381 publications: 71 scientists 382–391 publications: 71 scientists 392–401 publications: 62 scientists 402–411 publications: 54 scientists 412–421 publications: 41 scientists 422–431 publications: 63 scientists 432–441 publications: 53 scientists 442–451 publications: 31 scientists 452–461 publications: 42 scientists 462–471 publications: 40 scientists 472–481 publications: 29 scientists 482–491 publications: 34 scientists 492–501 publications: 30 scientists 502–511 publications: 23 scientists 512–521 publications: 41 scientists 522–531 publications: 29 scientists 532–541 publications: 28 scientists 542–551 publications: 16 scientists 552–561 publications: 18 scientists 562–571 publications: 18 scientists 572–581 publications: 17 scientists 582–591 publications: 17 scientists 592–601 publications: 17 scientists 602–611 publications: 19 scientists 612–621 publications: 13 scientists 622–631 publications: 12 scientists 632–641 publications: 11 scientists 642–651 publications: 16 scientists 652–661 publications: 9 scientists 662–671 publications: 5 scientists 672–681 publications: 13 scientists 682–691 publications: 12 scientists 692–701 publications: 6 scientists 702–711 publications: 6 scientists 712–721 publications: 9 scientists 722–731 publications: 9 scientists 732–741 publications: 6 scientists 742–751 publications: 11 scientists 752–761 publications: 10 scientists 762–771 publications: 7 scientists 772–781 publications: 12 scientists 782–791 publications: 7 scientists 792–801 publications: 5 scientists 802–806 publications: 1 scientist 807+ publications: 100 scientists
62–71 publications 807+

This scientist: 98 publications — 2nd percentile

2% of scientists in this discipline score the same or lower.

The last bar groups every scientist with 807 publications or more.

View publications distribution as a table
Number of Immunology scientists by publication count, Research.com 2026 ranking edition. Based on 4,929 ranked scientists.
Publications Scientists This scientist
62–71 9
72–81 23
82–91 40
92–101 72 98
102–111 86
112–121 108
122–131 150
132–141 160
142–151 159
152–161 189
162–171 166
172–181 181
182–191 188
192–201 187
202–211 178
212–221 158
222–231 168
232–241 159
242–251 160
252–261 148
262–271 116
272–281 125
282–291 115
292–301 111
302–311 95
312–321 97
322–331 97
332–341 99
342–351 96
352–361 69
362–371 76
372–381 71
382–391 71
392–401 62
402–411 54
412–421 41
422–431 63
432–441 53
442–451 31
452–461 42
462–471 40
472–481 29
482–491 34
492–501 30
502–511 23
512–521 41
522–531 29
532–541 28
542–551 16
552–561 18
562–571 18
572–581 17
582–591 17
592–601 17
602–611 19
612–621 13
622–631 12
632–641 11
642–651 16
652–661 9
662–671 5
672–681 13
682–691 12
692–701 6
702–711 6
712–721 9
722–731 9
732–741 6
742–751 11
752–761 10
762–771 7
772–781 12
782–791 7
792–801 5
802–806 1
807+ 100
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Helena Reijonen D-index placement in Immunology in 2026

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

No. of scientists
50 100 150 200
Bar chart with 60 bars. Horizontal axis: D-Index, 40–41 to 157+. Vertical axis: number of scientists, 0 to 201. Most scientists, 201, have 58–59 D-Index. The last bar groups every scientist with 157 D-Index or more. The highlighted bar, 46–47 D-Index, is where this scientist sits. 40–41 D-Index: 28 scientists 42–43 D-Index: 91 scientists 44–45 D-Index: 157 scientists 46–47 D-Index: 192 scientists 48–49 D-Index: 175 scientists 50–51 D-Index: 188 scientists 52–53 D-Index: 177 scientists 54–55 D-Index: 155 scientists 56–57 D-Index: 194 scientists 58–59 D-Index: 201 scientists 60–61 D-Index: 197 scientists 62–63 D-Index: 201 scientists 64–65 D-Index: 173 scientists 66–67 D-Index: 167 scientists 68–69 D-Index: 172 scientists 70–71 D-Index: 199 scientists 72–73 D-Index: 184 scientists 74–75 D-Index: 133 scientists 76–77 D-Index: 163 scientists 78–79 D-Index: 127 scientists 80–81 D-Index: 121 scientists 82–83 D-Index: 125 scientists 84–85 D-Index: 121 scientists 86–87 D-Index: 102 scientists 88–89 D-Index: 96 scientists 90–91 D-Index: 75 scientists 92–93 D-Index: 72 scientists 94–95 D-Index: 74 scientists 96–97 D-Index: 66 scientists 98–99 D-Index: 68 scientists 100–101 D-Index: 49 scientists 102–103 D-Index: 60 scientists 104–105 D-Index: 54 scientists 106–107 D-Index: 36 scientists 108–109 D-Index: 23 scientists 110–111 D-Index: 52 scientists 112–113 D-Index: 41 scientists 114–115 D-Index: 34 scientists 116–117 D-Index: 25 scientists 118–119 D-Index: 28 scientists 120–121 D-Index: 11 scientists 122–123 D-Index: 20 scientists 124–125 D-Index: 27 scientists 126–127 D-Index: 19 scientists 128–129 D-Index: 20 scientists 130–131 D-Index: 16 scientists 132–133 D-Index: 17 scientists 134–135 D-Index: 14 scientists 136–137 D-Index: 15 scientists 138–139 D-Index: 9 scientists 140–141 D-Index: 11 scientists 142–143 D-Index: 9 scientists 144–145 D-Index: 9 scientists 146–147 D-Index: 7 scientists 148–149 D-Index: 7 scientists 150–151 D-Index: 7 scientists 152–153 D-Index: 5 scientists 154–155 D-Index: 8 scientists 156 D-Index: 6 scientists 157+ D-Index: 96 scientists
40–41 D-Index 157+

This scientist: 47 D-Index — 9th percentile

9% of scientists in this discipline score the same or lower.

The last bar groups every scientist with 157 D-Index or more.

View D-Index distribution as a table
Number of Immunology scientists by D-index, Research.com 2026 ranking edition. Based on 4,929 ranked scientists.
D-Index Scientists This scientist
40–41 28
42–43 91
44–45 157
46–47 192 47
48–49 175
50–51 188
52–53 177
54–55 155
56–57 194
58–59 201
60–61 197
62–63 201
64–65 173
66–67 167
68–69 172
70–71 199
72–73 184
74–75 133
76–77 163
78–79 127
80–81 121
82–83 125
84–85 121
86–87 102
88–89 96
90–91 75
92–93 72
94–95 74
96–97 66
98–99 68
100–101 49
102–103 60
104–105 54
106–107 36
108–109 23
110–111 52
112–113 41
114–115 34
116–117 25
118–119 28
120–121 11
122–123 20
124–125 27
126–127 19
128–129 20
130–131 16
132–133 17
134–135 14
136–137 15
138–139 9
140–141 11
142–143 9
144–145 9
146–147 7
148–149 7
150–151 7
152–153 5
154–155 8
156 6
157+ 96
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Overview

Helena Reijonen is affiliated with the City Of Hope National Medical Center in the United States. Their research primarily spans the fields of biochemistry, genetics, molecular biology, immunology, and microbiology, with a particular focus on immunology and genetics within these broader domains.

Their work predominantly addresses topics related to immune cell function and interaction, diabetes and associated disorders, pancreatic function and diabetes, and T-cell and B-cell immunology. Additional areas of study include bone metabolism and diseases, NF-κB signaling pathways, and mechanisms governing cell death and regulation.

Reijonen's recent publications include:

  • Increased islet antigen-specific regulatory and effector CD4 + T cells in healthy individuals with the type 1 diabetes-protective haplotype, 2020, Science Immunology
  • RANKL/RANK is required for cytokine-induced beta cell death; osteoprotegerin, a RANKL inhibitor, reverses rodent type 1 diabetes, 2023, Science Advances
  • Technical Validation and Utility of an HLA Class II Tetramer Assay for Type 1 Diabetes: A Multicenter Study, 2023, The Journal of Clinical Endocrinology & Metabolism
  • BACH2: The Future of Induced T-Regulatory Cell Therapies, 2024, Cells
  • The CD318/CD6 axis limits type 1 diabetes islet autoantigen-specific human T cell activation, 2024, Journal of Autoimmunity

Frequent coauthors collaborating with Reijonen include Jeong-su Do, Nagesha Guthalu Kondegowda, Joanna Filipowska, Rosemary Li, and Selassie Ogyaadu.

Helena Reijonen's research contributions have been published in journals such as Science Advances, Science Immunology, The Journal of Clinical Endocrinology & Metabolism, Cells, and the Journal of Autoimmunity.

Best Publications

  • Recurrence of type 1 diabetes after simultaneous pancreas-kidney transplantation, despite immunosuppression, is associated with autoantibodies and pathogenic autoreactive CD4 T-cells

    Francesco Vendrame;Antonello Pileggi;Elsa Laughlin;Gloria Allende

  • Clinical, autoimmune, and genetic characteristics of very young children with type 1 diabetes. Childhood Diabetes in Finland (DiMe) Study Group.

    Jorma Komulainen;Petri Kulmala;Kaisa Savola;Raisa Lounamaa

  • Ultra-sensitive detection of rare T cell clones

    Harlan Robins;Cindy Desmarais;Jessica Matthis;Robert Livingston

  • Triple-label hybridization assay for type-1 diabetes-related HLA alleles.

    Sjöroos M;Iitiä A;Ilonen J;Reijonen H

  • Detection of GAD65-Specific T-Cells by Major Histocompatibility Complex Class II Tetramers in Type 1 Diabetic Patients and At-Risk Subjects

    Helena Reijonen;Erik J. Novak;Sharon Kochik;Anne Heninger

  • Islet Cell Antibody Seroconversion in Children Is Temporally Associated with Enterovirus Infections

    Merja Hiltunen;Heikki Hyöty;Mikael Knip;Jorma Ilonen

  • Rapid HLA-DQB1 Genotyping for Four Alleles in the Assessment of Risk for IDDM in the Finnish Population

    J Ilonen;H Reijonen;E Herva;M Sjöroos

  • Coeliac Disease: Frequent Occurrence After Clinical Onset of Insulin‐dependent Diabetes Mellitus

    T. Saukkonen;E. Savilahti;H. Reijonen;J. Ilonen

  • Cow's milk consumption, HLA-DQB1 genotype, and type 1 diabetes: a nested case-control study of siblings of children with diabetes. Childhood diabetes in Finland study group.

    Suvi M. Virtanen;Esa Läärä;Elina Hyppönen;Helena Reijonen

  • Islet-specific glucose-6-phosphatase catalytic subunit-related protein-reactive CD4+ T cells in human subjects.

    Junbao Yang;Nancy A. Danke;DeAnna Berger;Sandra Reichstetter

  • GAD65-Specific CD4 + T-Cells with High Antigen Avidity Are Prevalent in Peripheral Blood of Patients With Type 1 Diabetes

    Helena Reijonen;Roberto Mallone;Anne Kristin Heninger;Elsa M. Laughlin

  • Autoantigen-specific regulatory T cells induced in patients with Type 1 Diabetes Mellitus by Insulin B-chain immunotherapy

    Tihamer Orban;Klara Farkas;Heyam Jalahej;Janos Kis

  • Genetic markers, humoral autoimmunity, and prediction of type 1 diabetes in siblings of affected children. Childhood Diabetes in Finland Study Group.

    Petri Kulmala;Kaisa Savola;Helena Reijonen;Riitta Veijola

  • GAD65- and proinsulin-specific CD4+ T-cells detected by MHC class II tetramers in peripheral blood of type 1 diabetes patients and at-risk subjects.

    Viveka Öling;Jane Marttila;Jorma Ilonen;William W. Kwok

  • Validity and Reproducibility of Measurement of Islet Autoreactivity by T-Cell Assays in Subjects With Early Type 1 Diabetes

    Kevan C. Herold;Barbara Brooks-Worrell;Jerry Palmer;H. Michael Dosch

  • Cellular Immune Response to Cow's Milk β-Lactoglobulin in Patients With Newly Diagnosed IDDM

    Outi Vaarala;Paula Klemetti;Erkki Savilahti;Helena Reijonen

  • Insulin Gene Region-Encoded Susceptibility to IDDM Maps Upstream of the Insulin Gene

    Dag E Undlien;Simon T Bennett;John A Todd;Hanne E Akselsen

  • GAD65-specific autoantibodies enhance the presentation of an immunodominant T-cell epitope from GAD65.

    Helena Reijonen;Terri L. Daniels;Ake Lernmark;Gerald T. Nepom

  • Use of HLA class II tetramers in tracking antigen-specific T cells and mapping T-cell epitopes

    Helena Reijonen;William W Kwok

  • HLA-DQB1-defined genetic susceptibility, beta cell autoimmunity, and metabolic characteristics in familial and nonfamilial insulin-dependent diabetes mellitus. Childhood Diabetes in Finland (DiMe) Study Group.

    R Veijola;H Reijonen;P Vähäsalo;E Sabbah

  • Linkage disequilibrium between TAP2 variants and HLA class II alleles; no primary association between TAP2 variants and insulin-dependent diabetes mellitus.

    Kjersti S. Rønningen;Dag E. Undlien;Rafal Ploski;Nicki Maouni

Frequent Co-Authors

Mikael Knip
Mikael Knip University of Helsinki
Jorma Ilonen
Jorma Ilonen University of Turku
Hans K. Åkerblom
Hans K. Åkerblom University of Helsinki
Gerald T. Nepom
Gerald T. Nepom Virginia Mason Medical Center
William W. Kwok
William W. Kwok University of Washington
Riitta Veijola
Riitta Veijola Oulu University Hospital
Alberto Pugliese
Alberto Pugliese University of Miami
Suvi M. Virtanen
Suvi M. Virtanen Tampere University
Olli Simell
Olli Simell Turku University Hospital
Heikki Hyöty
Heikki Hyöty Tampere University

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Related Online Degrees & Career Pathways

For those studying Immunology in the USA, exploring related online degrees can open new career opportunities in healthcare and research. Many professionals consider transitioning into advanced nursing roles, which complement immunology knowledge and patient care expertise.

One popular option is affordable affordable pmhnp programs. These focus on psychiatric mental health nurse practitioner roles, offering specialized skills to support patients with immune-related mental health challenges.

Another pathway is pursuing a Doctor of Nursing Practice (DNP) degree, which can significantly impact earning potential. Understanding the dnp salary by state helps prospective students make informed decisions about location and career planning.

Nurses aiming for acute care specialties may explore certification options through an acute care np certification. This credential is ideal for those wanting to apply immunology principles in critical care environments.

For those seeking faster entry into nurse practitioner roles, the best accelerated fnp program options provide rigorous training in family nurse practitioner skills, creating a strong foundation to integrate immunology expertise in clinical settings.

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