Anja Frei

ORCID: 0000-0002-7134-1000
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About
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Research Areas
  • Chronic Obstructive Pulmonary Disease (COPD) Research
  • Chronic Disease Management Strategies
  • SARS-CoV-2 and COVID-19 Research
  • Physical Activity and Health
  • COVID-19 Clinical Research Studies
  • Health and Wellbeing Research
  • Respiratory Support and Mechanisms
  • COVID-19 and Mental Health
  • Diabetes Management and Education
  • Clinical practice guidelines implementation
  • Mobile Health and mHealth Applications
  • COVID-19 epidemiological studies
  • Balance, Gait, and Falls Prevention
  • Delphi Technique in Research
  • Cerebral Palsy and Movement Disorders
  • Smoking Behavior and Cessation
  • Health and Medical Studies
  • Long-Term Effects of COVID-19
  • Health Promotion and Cardiovascular Prevention
  • Single-cell and spatial transcriptomics
  • Primary Care and Health Outcomes
  • Health, psychology, and well-being
  • COVID-19 Digital Contact Tracing
  • Vaccine Coverage and Hesitancy
  • School Health and Nursing Education

University of Zurich
2016-2025

Roche (Switzerland)
2020-2025

University Hospital of Zurich
2011-2024

Prevention Institute
2015-2024

University of Basel
2014-2024

Life Science Zurich
2023-2024

University of Fribourg
2024

University of Lausanne
2024

Sorbonne Université
2024

University of Bern
2024

The human intestinal microbiota is a crucial factor in the pathogenesis of various diseases, such as metabolic syndrome or inflammatory bowel disease (IBD). Yet, knowledge about role environmental factors smoking (which known to influence theses aforementioned states) on complex microbial composition sparse. We aimed investigate cessation 10 healthy subjects undergoing controlled cessation.During observational period 9 weeks repetitive stool samples were collected. Based abundance 16S rRNA...

10.1371/journal.pone.0059260 article EN cc-by PLoS ONE 2013-03-14

<h3>Rationale</h3> Reduced physical activity (PA) in patients with COPD is associated a poor prognosis. Increasing PA key therapeutic target, but thus far few strategies have been found effective this patient group. <h3>Objectives</h3> To investigate the effectiveness of 12-week semiautomated telecoaching intervention on multicentre European randomised controlled trial. <h3>Methods</h3> 343 from six centres, encompassing wide spectrum disease severity, were randomly allocated to either usual...

10.1136/thoraxjnl-2016-209026 article EN cc-by-nc Thorax 2017-01-30

Our aim was to comprehensively validate the 1-min sit-to-stand (STS) test in chronic obstructive pulmonary disease (COPD) patients and explore physiological response test. We used data from two longitudinal studies of COPD who completed inpatient rehabilitation programmes. collected STS test, 6-min walk (6MWT), health-related quality life, dyspnoea exercise cardiorespiratory at admission discharge. assessed learning effect, test–retest reliability, construct validity, responsiveness minimal...

10.1183/13993003.01871-2016 article EN European Respiratory Journal 2017-03-01

To evaluate longer term symptoms and health outcomes associated with post-covid-19 condition within a cohort of individuals SARS-CoV-2 infection.Population based, longitudinal cohort.General population canton Zurich, Switzerland.1106 adults confirmed infection who were not vaccinated before 628 did have an infection.Trajectories self-reported status covid-19 related between months six, 12, 18, 24 after excess risk at six compared had no infection.22.9% (95% confidence interval 20.4% to...

10.1136/bmj-2022-074425 article EN cc-by-nc BMJ 2023-05-31
Anja Irmisch Ximena Bonilla Stéphane Chevrier Kjong-Van Lehmann Franziska Singer and 95 more Nora C. Toussaint Cinzia Esposito Julien Mena Emanuela S. Milani Ruben Casanova Daniel J. Stekhoven Rebekka Wegmann Francis Jacob Bettina Sobottka Sandra Goetze Jack Kuipers Jacobo Sarabia del Castillo Michael Prummer Mustafa A. Tuncel Ulrike Menzel Alice K. Jacobs Stefanie Engler Sujana Sivapatham Anja Frei Gabriele Gut Joanna Ficek Nicola Miglino Rudolf Aebersold Marina Bacac Niko Beerenwinkel Christian Beisel Bernd Bodenmiller Reinhard Dummer Viola Heinzelmann‐Schwarz Viktor H. Koelzer Markus G. Manz Holger Moch Lucas Pelkmans Berend Snijder Alexandre Theocharides Markus Tolnay Andreas Wicki Bernd Wollscheid Gunnar Rätsch Mitchell P. Levesque Melike Ak Faisal Alquaddoomi Jonas Albinus Ilaria Alborelli Sonali Andani Per-Olof Attinger Daniel Baumhoer Beatrice Beck‐Schimmer Lara Bernasconi Anne Bertolini Natalia Chicherova Maya D’Costa Esther Danenberg Natalie R. Davidson Monica-Andreea Drăgan Martin Erkens Katja Eschbach André Fedier Pedro Ferreira Bruno S. Frey Linda Grob Detlef Günther Martina Haberecker Pirmin Haeuptle Sylvia Herter René Holtackers Tamara Huesser Tim M. Jaeger Katharina Jahn Alva Rani James Philip Jermann André Kahles Abdullah Kahraman Werner Kuebler Christian P. Kunze Christian Kurzeder Sebastian Lugert Gerd Maass Philipp Markolin Julian M. Metzler Simone Muenst Riccardo Murri Charlotte K.Y. Ng Stefan Nicolet Marta Nowak Patrick G. A. Pedrioli Salvatore Piscuoglio Mathilde Ritter Christian Rommel María L. Rosano-González Natascha Santacroce Ramona Schlenker Petra Schwalie Severin Schwan Tobias Schär

10.1016/j.ccell.2021.01.004 article EN publisher-specific-oa Cancer Cell 2021-01-21

Electronic nicotine-delivery systems - also called e-cigarettes are used by some tobacco smokers to assist with quitting. Evidence regarding the efficacy and safety of these is needed.

10.1056/nejmoa2308815 article EN New England Journal of Medicine 2024-02-14

Digital proximity tracing apps have been released to mitigate the transmission of SARS-CoV-2, virus known cause COVID-19. However, it remains unclear how acceptance and uptake these can be improved.

10.2196/25701 article EN cc-by JMIR Public Health and Surveillance 2020-12-16

Abstract Objectives Seroprevalence studies to assess the spread of SARS-CoV-2 infection in general population and subgroups are key for evaluating mitigation vaccination policies understanding disease both on national level comparison with international community. Methods Corona Immunitas is a research program coordinated, population-based, seroprevalence implemented by Swiss School Public Health (SSPH+). Over 28,340 participants, randomly selected age-stratified, some regional specificities...

10.1007/s00038-020-01494-0 article EN cc-by International Journal of Public Health 2020-10-24

Abstract Physical mobility is essential to health, and patients often rate it as a high-priority clinical outcome. Digital outcomes (DMOs), such real-world gait speed or step count, show promise measures in many medical conditions. However, current research nascent fragmented by discipline. This scoping review maps existing evidence on the utility of DMOs, identifying commonalities across traditional disciplinary divides. In November 2019, 11 databases were searched for records investigating...

10.1038/s41746-021-00513-5 article EN cc-by npj Digital Medicine 2021-10-14

Physical activity (PA) is of key importance for health among healthy persons and individuals with chronic obstructive pulmonary disease (COPD). PA has multiple dimensions that can be assessed quantified objectively using monitors. Moreover, as shown in the published literature, variable methodologies have been used to date quantify COPD, precluding clear comparisons outcomes across studies. The present paper aims provide a summary available literature rationale behind measured proposes...

10.15326/jcopdf.2021.0213 article EN Chronic Obstructive Pulmonary Diseases Journal of the COPD Foundation 2021-01-01

Background The development of optimal strategies to treat impaired mobility related ageing and chronic disease requires better ways detect measure it. Digital health technology, including body worn sensors, has the potential directly accurately capture real-world mobility. Mobilise-D consists 34 partners from 13 countries who are working together jointly develop implement a digital assessment solution demonstrate that outcomes have provide better, safer, quicker way assess, monitor, predict...

10.1371/journal.pone.0269615 article EN cc-by PLoS ONE 2022-10-06

Background Post COVID-19 condition (PCC) is an important complication of SARS-CoV-2 infection, affecting millions worldwide. This study aimed to evaluate the prevalence and severity post with novel variants after prior vaccination. Methods We used pooled data from 1350 SARS-CoV-2-infected individuals two representative population-based cohorts in Switzerland, diagnosed between Aug 5, 2020, Feb 25, 2022. descriptively analysed PCC, defined as presence frequency PCC-related symptoms six months...

10.1371/journal.pone.0281429 article EN cc-by PLoS ONE 2023-02-22

BackgroundTumour-infiltrating CD8+ cytotoxic T cells confer favourable prognosis in colorectal cancer. The added prognostic value of other infiltrating immune is unclear and so we sought to investigate their two large clinical trial cohorts.MethodsWe used multiplex immunofluorescent staining tissue microarrays assess the densities CD8+, CD20+, FoxP3+, CD68+ intraepithelial intrastromal compartments from tumour samples patients with stage II–III cancer SCOT (ISRCTN59757862), which examined 3...

10.1016/s1470-2045(23)00560-0 article EN cc-by The Lancet Oncology 2024-01-30

<h2>Abstract</h2><h3>Objective</h3> This study aimed to identify those comorbidities with greatest impact on patient-reported health status in patients chronic obstructive pulmonary disease (COPD) and develop a comorbidity index that reflects their combined impact. <h3>Study Design Setting</h3> We included 408 Swiss Dutch primary care COPD from the International Collaborative Effort Chronic Obstructive Lung Disease: Exacerbation Risk Index Cohorts (ICE COLD ERIC) this cross-sectional...

10.1016/j.jclinepi.2014.03.005 article EN cc-by-nc-nd Journal of Clinical Epidemiology 2014-04-29
Stefan G. Stark Joanna Ficek Francesco Locatello Ximena Bonilla Stéphane Chevrier and 95 more Franziska Singer Rudolf Aebersold Faisal Alquaddoomi Jonas Albinus Ilaria Alborelli Sonali Andani Per-Olof Attinger Marina Bacac Daniel Baumhoer Beatrice Beck‐Schimmer Niko Beerenwinkel Christian Beisel Lara Bernasconi Anne Bertolini Bernd Bodenmiller Ximena Bonilla Ruben Casanova Stéphane Chevrier Natalia Chicherova Maya D’Costa Esther Danenberg Natalie R. Davidson Monica-Andreea Dră gan Reinhard Dummer Stefanie Engler Martin Erkens Katja Eschbach Cinzia Esposito André Fedier Pedro Ferreira Joanna Ficek Anja Frei Bruno S. Frey Sandra Goetze Linda Grob Gabriele Gut Detlef Günther Martina Haberecker Pirmin Haeuptle Viola Heinzelmann‐Schwarz Sylvia Herter René Holtackers Tamara Huesser Anja Irmisch Francis Jacob Alice K. Jacobs Tim M. Jaeger Katharina Jahn Alva Rani James Philip Jermann André Kahles Abdullah Kahraman Viktor H. Koelzer Werner Kuebler Jack Kuipers Christian P. Kunze Christian Kurzeder Kjong-Van Lehmann Mitchell Levesque Sebastian Lugert Gerd Maass Markus G. Manz Philipp Markolin Julien Mena Ulrike Menzel Julian M. Metzler Nicola Miglino Emanuela S. Milani Holger Moch Simone Muenst Riccardo Murri Charlotte K.Y. Ng Stefan Nicolet Marta Nowak Patrick G. A. Pedrioli Lucas Pelkmans Salvatore Piscuoglio Michael Prummer Mathilde Ritter Christian Rommel María L. Rosano-González Gunnar Rätsch Natascha Santacroce Jacobo Sarabia del Castillo Ramona Schlenker Petra Schwalie Severin Schwan Tobias Schär Gabriela Senti Franziska Singer Sujana Sivapatham Berend Snijder Bettina Sobottka Vipin T. Sreedharan Stefan G. Stark

Recent technological advances have led to an increase in the production and availability of single-cell data. The ability integrate a set multi-technology measurements would allow identification biologically or clinically meaningful observations through unification perspectives afforded by each technology. In most cases, however, profiling technologies consume used cells thus pairwise correspondences between datasets are lost. Due sheer size can acquire, scalable algorithms that able...

10.1093/bioinformatics/btaa843 article EN cc-by Bioinformatics 2020-09-14
Arthur Dondi Ulrike Lischetti Francis Jacob Franziska Singer Nico Borgsmüller and 95 more Ricardo Coelho Rudolf Aebersold Melike Ak Faisal Alquaddoomi Silvana I. Albert Jonas Albinus Ilaria Alborelli Sonali Andani Per-Olof Attinger Marina Bacac Daniel Baumhoer Beatrice Beck‐Schimmer Christian Beisel Lara Bernasconi Anne Bertolini Bernd Bodenmiller Ximena Bonilla Lars Bosshard Byron Calgua Ruben Casanova Stéphane Chevrier Natalia Chicherova Maya D’Costa Esther Danenberg Natalie J. Davidson Monica-Andreea Drăgan Reinhard Dummer Stefanie Engler Martin Erkens Katja Eschbach Cinzia Esposito André Fedier Pedro Ferreira Joanna Ficek Anja Frei Bruno S. Frey Sandra Goetze Linda Grob Gabriele Gut Detlef Günther Martina Haberecker Pirmin Haeuptle Sylvia Herter René Holtackers Tamara Huesser Alexander Immer Anja Irmisch Alice K. Jacobs Tim M. Jaeger Katharina Jahn Alva Rani James Philip Jermann André Kahles Abdullah Kahraman Viktor H. Koelzer Werner Kuebler Jack Kuipers Christian P. Kunze Christian Kurzeder Kjong-Van Lehmann Mitchell Levesque Ulrike Lischetti Sebastian Lugert Gerd Maass Markus G. Manz Philipp Markolin Martin Mehnert Julien Mena Julian M. Metzler Nicola Miglino Emanuela S. Milani Holger Moch Simone Muenst Riccardo Murri Charlotte K.Y. Ng Stefan Nicolet Marta Nowak Mónica Núñez López Patrick G. A. Pedrioli Lucas Pelkmans Salvatore Piscuoglio Michael Prummer Natalie Rimmer Mathilde Ritter Christian Rommel María L. Rosano-González Gunnar Rätsch Natascha Santacroce Jacobo Sarabia del Castillo Ramona Schlenker Petra Schwalie Severin Schwan Tobias Schär Gabriela Senti Wenguang Shao

Understanding the complex background of cancer requires genotype-phenotype information in single-cell resolution. Here, we perform long-read RNA sequencing (scRNA-seq) on clinical samples from three ovarian patients presenting with omental metastasis and increase PacBio depth to 12,000 reads per cell. Our approach captures 152,000 isoforms, which over 52,000 were not previously reported. Isoform-level analysis accounting for non-coding isoforms reveals 20% overestimation protein-coding gene...

10.1038/s41467-023-43387-9 article EN cc-by Nature Communications 2023-11-27

Although physical activity is considered an important therapeutic target in chronic obstructive pulmonary disease (COPD), what "physical activity" means to COPD patients and how their perspective best measured poorly understood. We designed a conceptual framework, guiding the development content validation of two patient reported outcome (PRO) instruments on (PROactive PRO instruments). 116 from four European countries with diverse demographics phenotypes participated three consecutive...

10.1183/09031936.00004814 article EN cc-by-nc European Respiratory Journal 2014-07-17

Telecoaching approaches can enhance physical activity (PA) in patients with chronic obstructive pulmonary disease (COPD). However, their effectiveness is likely to be influenced by intervention-specific characteristics.This study aimed assess the acceptability, actual usage, and feasibility of a complex PA telecoaching intervention from both patient coach perspectives link these intervention.We conducted mixed-methods based on completers group (N=159) included an (effective) 12-week...

10.2196/mhealth.9774 article EN cc-by JMIR mhealth and uhealth 2018-10-18
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