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I

Iris E. Sommer

University of Groningen

86H-index
654Paper Count
2.9WCitation Count
Published Papers 348
Publication Date
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Multiscale characterization of cortical signatures in positive and negative schizotypy: a worldwide ENIGMA study
errMolecular Psychiatry
IF10.1
err2026-04-18
err0
errOAAI
errMatthias Kirschner; Benazir Hodzic-Santor; Leda Kennedy; Justine Y. Hansen; Mathilde Antoniades; Igor Nenadić; Tilo Kircher; Axel Krug; Tina Meller; Udo Dannlowski; Dominik Grotegerd; Kira Flinkenflügel; Susanne Meinert; Tiana Borgers; Janik Goltermann; Tim Hahn; Joscha Böhnlein; Elisabeth J. Leehr; Carlotta Barkhau; Alex Fornito; Aurina Arnatkeviciute; Mark A. Bellgrove; Jeggan Tiego; Pamela DeRosse; Melissa Green; Yann Quidé; Christos Pantelis; Raymond C. K. Chan; Yi Wang; Ulrich Ettinger; Martin Debbané; Melodie Derome; Christian Gaser; Bianca Besteher; Kelly Diederen; Tom J. Spencer; Josselin Houenou; Edith Pomarol-Clotet; Raymond Salvador; Wulf Rössler; Lukasz Smigielski; Veena Kumari; Preethi Premkumar; Haeme R. P. Park; Kristina Wiebels; Imke Jansen; James Gilleen; Paul Allen; Jan-Bernard Marsman; Irina Lebedeva; Alexander Tomyshev; Anne-Kathrin Fett; Iris Sommer; Sanne Koops; Phillip Grant; Asia Ferrari; Bin Wan; Indrit Bègue; Dennis Hernaus; Maria Jalbrzikowski; Casey Paquola; Sara Larivière; Boris Bernhardt; Sofie L. Valk; Bratislav Misic; Theo G. M. van Erp; Jessica A. Turner; Paul M. Thompson; Andre Aleman; Alain Dagher; Stefan Kaiser; Gemma Modinos
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Midbrain microglial and macrophage mRNAs distinguish neuroinflammatory schizophrenia from bipolar disorder
errbrain, behavior, and immunity
IF0
err2026-01-16
err0
errOAAI
errGerardo Mendez-Victoriano; Yunting Zhu; Yasmine Kostoglou; Adam K. Walker; Frank Middleton; Paul T. Massa; Bart J.L. Eggen; Maree J. Webster; Iris E.C. Sommer; Cynthia S. Weickert
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Investigating the methodological foundation of lesion network mapping
errNature Neuroscience
IF20
err2026-01-15
err0
errOAAI
errMartijn P. van den Heuvel; Ilan Libedinsky; Sebastian Quiroz Monnens; Jonathan Repple; Iris Sommer; Luca Cocchi
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errSave
Negative association between cognitive functioning and antipsychotic D2 receptor occupancy, affinity, and dose after first episode psychosis
errPSYCHOLOGICAL MEDICINE
IF5.5
err2026-01-02
err0
PREAI
errOomen, Priscilla P.; Gangadin, Shiral S.; de Haan, Lieuwe; de Beer, Franciska; Beune, Oda E.; Oostendorp, Doris A. D.; Begemann, Marieke J. H.; Boonstra, Nynke; Kikkert, Martijn; Koops, Sanne; Veling, Wim; Sommer, Iris E. C.
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Relationship between synaptic density and cortical (micro)structure in healthy subjects, patients with schizophrenia spectrum disorder and unaffected siblings: a multimodal [11C]UCB-J PET and MRI study
errBiological Psychiatry: Cognitive Neuroscience and Neuroimaging
IF0
err2025-11-29
err0
errOAAI
errJesca E. De Jager; Monique van der Weijden-Germann; Edwin van Dellen; Erik F.J. de Vries; Iris E.C. Sommer; Jasper O. Nuninga
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errSave
Increased TNF Superfamily Members in Neuroinflammatory Schizophrenia and Bipolar Disorder Midbrains
errBiological Psychiatry Global Open Science
IF0
err2025-11-01
err0
errOAAI
errGerardo Mendez-Victoriano; Yunting Zhu; Layla Neuhaus; Suhaana Shaik; Frank Middleton; Yuji Kondo; Amir Fayyazuddin; Daniel Hoeppner; Sofía Puvogel; Astrid Alsema; Laura Kracht; Mitsuyuki Matsumoto; Bart J.L. Eggen; Adam K. Walker; Maree J. Webster; Iris E.C. Sommer; Cynthia S. Weickert
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errSave
The Transdiagnostic Association Between Childhood Trauma and Accelerated Brain Aging in Two Independent Datasets
errSCHIZOPHRENIA BULLETIN
IF4.8
err2025-11-01
err0
PREAI
errZhou, Lan; Schnack, Hugo; van Dellen, Edwin; Boks, Marco P.; Bakker, P. Roberto; Cahn, Wiepke; Sommer, Iris E. C.; Begemann, Marieke J. H.
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Association between the exposome score for schizophrenia and functioning in remitted first-episode psychosis: results from the HAMLETT study
errSchizophrenia Research
IF3.5
err2025-10-06
err0
errOAAI
errSterre Kamphuis; Angelo Arias-Magnasco; Shiral Gangadin; Marieke Begemann; Ben Wijnen; Wim Veling; Lieuwe de Haan; Iris Sommer; Jim van Os; P. Roberto Bakker; Sinan Gülöksüz
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Trajectories of Clozapine Concentrations in Women Across Menopausal Age
errSCHIZOPHRENIA BULLETIN
IF4.8
err2025-10-01
err0
PREAI
errde Beer, Franciska; Hamers, Iris M. H.; Prycka, Michalina; Schoretsanitis, Georgios; Gangadin, Shiral S.; Touw, Daan J.; Sommer, Iris E. C.
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rTMS treatment for refractory hallucinations: new insights from classic targets
errlancet psychiatry
IF0
err2025-08-04
err0
PREAI
errIris E Sommer; Sanne Koops; Martijn van den Heuvel
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The Effects of Antipsychotic Dose Reduction on Movement Disorders and Cardiometabolic Indices in Patients Remitted from a First Episode of Psychosis
errSCHIZOPHRENIA BULLETIN
IF4.8
err2025-08-01
err0
errOAAI
errLiu, Yinzhao; Sommer, Iris E.; Begemann, Marieke J. H.; Gangadin, Shiral S.; Perry, Benjamin, I; Scheurink, Toon A. W.; van Beveren, Nico J. M.; Bakker, Pieter Roberto; Koops, Sanne
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Prednisolone add-on in early phase schizophrenia: A randomized, double-blind, placebo-controlled pilot study
errbrain behavior and immunity
IF0
err2025-07-10
err0
errOAAI
errGunnhild E. Hoprekstad; Erik Johnsen; Christoffer Bartz-Johannessen; Jill Kristin Bjarke; Petros Drosos; Ole Bernt Fasmer; Kristian Varden Gjerde; Solveig K. Reitan; Silje Skrede; Iris E.C. Sommer; Lena Stabell; Vidar M. Steen; Rune A. Kroken
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errSave
Towards a name change of schizophrenia: Positive and Negative Symptoms Disorder (PND)
errEUROPEAN ARCHIVES OF PSYCHIATRY AND CLINICAL NEUROSCIENCE
IF3.7
err2025-05-19
err0
errOAAI
errLeucht, Stefan; Yurtseven, Deniz S.; Priller, Josef; Davis, John M.; van Os, Jim; Sommer, Iris E. C.
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errSave
A single composite index of semantic behavior tracks symptoms of psychosis over time
errSCHIZOPHRENIA RESEARCH
IF3.5
err2025-05-01
err0
errOAAI
errPalominos, Claudio; Kirdun, Maryia; Nikzad, Amir H.; Spilka, Michael J.; Homan, Philipp; Sommer, Iris E.; Tang, Sunny X.; Hinzen, Wolfram
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What Do Four Decades of Research Tell Us About the Association Between Childhood Adversity and Psychosis: An Updated and Extended Multi-Level Meta-Analysis
errAMERICAN JOURNAL OF PSYCHIATRY
IF14.7
err2025-04-01
err2
PREAI
errZhou, Lan; Sommer, Iris E. C.; Yang, Pengyuan; Sikirin, Lev; van Os, Jim; Bentall, Richard P.; Varese, Filippo; Begemann, Marieke J. H.
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The influence of female sex and estrogens on drug pharmacokinetics: what is the evidence?
errEXPERT OPINION ON DRUG METABOLISM & TOXICOLOGY
IF3.4
err2025-03-01
err0
errOAAI
errBosch, E. L.; Sommer, I. E. C.; Touw, D. J.
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Genetic variants in COMT and ESR1 genes shape treatment response to raloxifene in schizophrenia-spectrum disorders
errPSYCHONEUROENDOCRINOLOGY
IF3.6
err2025-02-01
err1
errOAAI
errBrand, Bodyl A.; Boer, Anne Jetske; de Boer, Janna N.; Bozaoglu, Kiymet; Morris, Kim; Rossell, Susan; Sommer, Iris E. C.
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Cholinergic Denervation Patterns in Parkinson's Disease Associated With Cognitive Impairment Across Domains
errHUMAN BRAIN MAPPING
IF3.3
err2025-01-23
err0
errOAAI
errd'Angremont, Emile; Renken, Remco; van Der Zee, Sygrid; de Vries, Erik F. J.; van Laar, Teus; Sommer, Iris E. C.
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errSave
Collaborative outcomes study on health and functioning during infection times (COH-FIT): Insights on modifiable and non-modifiable risk and protective factors for wellbeing and mental health during the COVID-19 pandemic from multivariable and network analyses
errEUROPEAN NEUROPSYCHOPHARMACOLOGY
IF6.7
err2025-01-01
err1
PREAI
errSolmi, Marco; Thompson, Trevor; Cortese, Samuele; Estrade, Andres; Agorastos, Agorastos; Radua, Joaquim; Dragioti, Elena; Vancampfort, Davy; Thygesen, Lau Caspar; Aschauer, Harald; Schloegelhofer, Monika; Aschauer, Elena; Schneeberger, Andres; Huber, Christian G.; Hasler, Gregor; Conus, Philippe; Do Cuenod, Kim Q.; von Kanel, Roland; Arrondo, Gonzalo; Fusar-Poli, Paolo; Gorwood, Philip; Llorca, Pierre-Michel; Krebs, Marie-Odile; Scanferla, Elisabetta; Kishimoto, Taishiro; Rabbani, Golam; Skonieczna-Zydecka, Karolina; Brambilla, Paolo; Favaro, Angela; Takamiya, Akihiro; Zoccante, Leonardo; Colizzi, Marco; Bourgin, Julie; Kaminski, Karol; Moghadasin, Maryam; Seedat, Soraya; Matthews, Evan; Wells, John; Vassilopoulou, Emilia; Gadelha, Ary; Su, Kuan-Pin; Kwon, Jun Soo; Kim, Minah; Lee, Tae Young; Papsuev, Oleg; Mankova, Denisa; Boscutti, Andrea; Gerunda, Cristiano; Saccon, Diego; Righi, Elena; Monaco, Francesco; Croatto, Giovanni; Cereda, Guido; Demurtas, Jacopo; Brondino, Natascia; Veronese, Nicola; Enrico, Paolo; Politi, Pierluigi; Ciappolino, Valentina; Pfennig, Andrea; Bechdolf, Andreas; Meyer-Lindenberg, Andreas; Kahl, Kai G.; Domschke, Katharina; Bauer, Michael; Koutsouleris, Nikolaos; Winter, Sibylle; Borgwardt, Stefan; Bitter, Istvan; Balazs, Judit; Czobor, Pal; Unoka, Zsolt; Mavridis, Dimitris; Tsamakis, Konstantinos; Bozikas, Vasilios P.; Tunvirachaisakul, Chavit; Maes, Michael; Rungnirundorn, Teerayuth; Supasitthumrong, Thitiporn; Haque, Ariful; Brunoni, Andre R.; Costardi, Carlos Gustavo; Schuch, Felipe Barreto; Polanczyk, Guilherme; Luiz, Jhoanne Merlyn; Fonseca, Lais; Aparicio, Luana V.; Valvassori, Samira S.; Nordentoft, Merete; Vendsborg, Per; Hoffmann, Sofie Have; Sehli, Jihed; Sartorius, Norman; Heuss, Sabina; Guinart, Daniel; Hamilton, Jane; Kane, John; Rubio, Jose; Sand, Michael; Koyanagi, Ai; Solanes, Aleix; Andreu-Bernabeu, Alvaro; Caceres, Antonia San Jose; Arango, Celso; Diaz-Caneja, Covadonga M.; Hidalgo-Mazzei, Diego; Vieta, Eduard; Gonzalez-Penas, Javier; Fortea, Lydia; Parellada, Mara; Fullana, Miquel A.; Verdolini, Norma; Andrlikova, Eva; Janku, Karolina; Millan, Mark J.; Honciuc, Mihaela; Moniuszko-Malinowska, Anna; Loniewskiaf, Igor; Samochowiec, Jerzy; Kiszkiel, Lukasz; Marlicz, Maria; Sowa, Pawel; Marlicz, Wojciech; Spies, Georgina; Stubbs, Brendon; Firth, Joseph; Sullivan, Sarah; Darcin, Asli Enez; Aksu, Hatice; Dilbaz, Nesrin; Noyan, Onur; Kitazawa, Momoko; Kurokawa, Shunya; Tazawa, Yuki; Anselmi, Alejandro; Cracco, Cecilia; Machado, Ana In Es; Estrade, Natalia; De Leo, Diego; Curtis, Jackie; Berk, Michael; Carvalho, Andre F.; Ward, Philip; Teasdale, Scott; Rosenbaum, Simon; Marx, Wolfgang; Horodnic, Adrian Vasile; Oprea, Liviu; Alexinschi, Ovidiu; Ifteni, Petru; Turliuc, Serban; Ciuhodaru, Tudor; Bolos, Alexandra; Matei, Valentin; Nieman, Dorien H.; Sommer, Iris; van Os, Jim; van Amelsvoort, Therese; Sunat, Ching-Fang; Guuat, Ta-Wei; Jiao, Can; Zhang, Jieting; Fan, Jialin; Zou, Liye; Yu, Xin; Chi, Xinli; de Timary, Philippe; van Winkel, Ruud; Ng, Bernardo; de Leon, Edilberto Pena; Arellano, Ramon; Roman, Raquel; Sanchez, Thelma; Movina, Larisa; Morgado, Pedro; Brissos, Sofia; Aizberg, Oleg; Mosina, Anna; Krinitski, Damir; Mugisha, James; Sadeghi-Bahmani, Dena; Sheybani, Farshad; Sadeghi, Masoud; Hadi, Samira; Brandei, Serge; Errazuriz, Antonia; Crossley, Nicolas; Ristic, Dragana Ignjatovic; Lopez-Jaramilli, Carlos; Efthymiou, Dimitris; Kuttichira, Praveenlal; Kallivayalil, Roy Abraham; Javed, Afzal; Afridi, Muhammad Iqbal; James, Bawo; Seb-Akahomen, Omonefe Joy; Fiedorowicza, Jess; Daskalakis, Jeff; Yatham, Lakshmi N.; Yang, Lin; Okasha, Tarek; Dahdouh, Aicha; Tiihonen, Jari; Shin, Jae Il; Lee, Jinhee; Mhalla, Ahmed; Gaha, Lotfi; Brahim, Takoua; Altynbekov, Kuanysh; Negay, Nikolay; Nurmagambetova, Saltanat; Abu Jamei, Yasser; Weiser, Mark; Correll, Christoph U.
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Approximating the semantic space: word embedding techniques in psychiatric speech analysis
errSCHIZOPHRENIA
IF4.1
err2024-12-02
err0
errOAAI
errPalominos, Claudio; He, Rui; Frohlich, Karla; Muelfarth, Rieke Roxanne; Seuffert, Svenja; Sommer, Iris E.; Homan, Philipp; Kircher, Tilo; Stein, Frederike; Hinzen, Wolfram
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Research Directions

No research directions
Co-authors
Cooperation Journals
P
Paul M. Thompson
H-index: 222 · Papers: 4.3K
B
Brenda W.J.H. Penninx
H-index: 210 · Papers: 1.8K
P
Philip Scheltens
H-index: 177 · Papers: 2.4K
M
Michael O’Donovan
H-index: 167 · Papers: 1.2K
J
Jim van Os
H-index: 156 · Papers: 1.8K
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