Christina Keen

2.1k total citations · 2 hit papers
32 papers, 1.3k citations indexed

About

Christina Keen is a scholar working on Physiology, Pulmonary and Respiratory Medicine and Endocrinology, Diabetes and Metabolism. According to data from OpenAlex, Christina Keen has authored 32 papers receiving a total of 1.3k indexed citations (citations by other indexed papers that have themselves been cited), including 21 papers in Physiology, 19 papers in Pulmonary and Respiratory Medicine and 4 papers in Endocrinology, Diabetes and Metabolism. Recurrent topics in Christina Keen's work include Asthma and respiratory diseases (20 papers), Respiratory and Cough-Related Research (8 papers) and Chronic Obstructive Pulmonary Disease (COPD) Research (6 papers). Christina Keen is often cited by papers focused on Asthma and respiratory diseases (20 papers), Respiratory and Cough-Related Research (8 papers) and Chronic Obstructive Pulmonary Disease (COPD) Research (6 papers). Christina Keen collaborates with scholars based in Sweden, United Kingdom and United States. Christina Keen's co-authors include Paul M. O’Byrne, Peter J. Barnes, Helen K. Reddel, J. Mark FitzGerald, Eric D. Bateman, Rosa Lamarca, Carin Jorup, Nanshan Zhong, Stefan Ivanov and Mohib Uddin and has published in prestigious journals such as New England Journal of Medicine, CHEST Journal and Journal of Allergy and Clinical Immunology.

In The Last Decade

Christina Keen

28 papers receiving 1.3k citations

Hit Papers

Inhaled Combined Budesonide–Formoterol as Needed in Mild ... 2018 2026 2020 2023 2018 2018 100 200 300
What are hit papers?

Hit papers significantly outperform the citation benchmark for their cohort. A paper qualifies if it has ≥500 total citations, achieves ≥1.5× the top-1% citation threshold for papers in the same subfield and year (this is the minimum needed to enter the top 1%, not the average within it), or reaches the top citation threshold in at least one of its specific research topics.

  1. Inhaled Combined Budesonide–Formoterol as Needed in Mild Asthma
    2018 366 citations Paul M. O’Byrne, J. Mark FitzGerald et al. New England Journal of Medicine profile →
  2. As-Needed Budesonide–Formoterol versus Maintenance Budesonide in Mild Asthma
    2018 303 citations Eric D. Bateman, Helen K. Reddel et al. New England Journal of Medicine profile →

Peers — A (Enhanced Table)

Peers by citation overlap · career bar shows stage (early→late) cites · hero ref

Name h Career Trend Papers Cites
Christina Keen Sweden 13 965 923 212 126 69 32 1.3k
Monica Cheng Munthe‐Kaas Norway 18 702 0.7× 608 0.7× 200 0.9× 152 1.2× 71 1.0× 34 1.1k
Jan Parner Denmark 10 839 0.9× 864 0.9× 138 0.7× 97 0.8× 108 1.6× 14 1.4k
Lucio Casali Italy 15 517 0.5× 581 0.6× 128 0.6× 139 1.1× 119 1.7× 27 1.1k
Victor E. Ortega United States 14 447 0.5× 367 0.4× 104 0.5× 48 0.4× 81 1.2× 49 820
Thomas Bahmer Germany 17 463 0.5× 564 0.6× 160 0.8× 74 0.6× 58 0.8× 46 871
Marijke Amelink Netherlands 13 1.1k 1.2× 908 1.0× 200 0.9× 230 1.8× 180 2.6× 18 1.3k
G. F. Ryan Australia 7 743 0.8× 449 0.5× 244 1.2× 162 1.3× 75 1.1× 11 1.1k
L. Thomson United Kingdom 9 697 0.7× 579 0.6× 129 0.6× 96 0.8× 43 0.6× 12 842
Mark H. Moss United States 10 1.3k 1.4× 1.1k 1.2× 74 0.3× 192 1.5× 52 0.8× 24 1.5k
Megan Hardin United States 15 716 0.7× 832 0.9× 61 0.3× 32 0.3× 41 0.6× 44 1.0k

Countries citing papers authored by Christina Keen

Since Specialization
Citations

This map shows the geographic impact of Christina Keen's research. It shows the number of citations coming from papers published by authors working in each country. You can also color the map by specialization and compare the number of citations received by Christina Keen with the expected number of citations based on a country's size and research output (numbers larger than one mean the country cites Christina Keen more than expected).

Fields of papers citing papers by Christina Keen

Since Specialization
Physical SciencesHealth SciencesLife SciencesSocial Sciences

This network shows the impact of papers produced by Christina Keen. Nodes represent research fields, and links connect fields that are likely to share authors. Colored nodes show fields that tend to cite the papers produced by Christina Keen. The network helps show where Christina Keen may publish in the future.

Co-authorship network of co-authors of Christina Keen

This figure shows the co-authorship network connecting the top 25 collaborators of Christina Keen. A scholar is included among the top collaborators of Christina Keen based on the total number of citations received by their joint publications. Widths of edges represent the number of papers authors have co-authored together. Node borders signify the number of papers an author published with Christina Keen. Christina Keen is excluded from the visualization to improve readability, since they are connected to all nodes in the network.

All Works

20 of 20 papers shown
1.
Belvisi, Maria G., et al.. (2026). First-in-human study for londamocitinib (AZD4604), an inhaled selective JAK1 inhibitor. Journal of Allergy and Clinical Immunology.
2.
Jones, Paul, Pierre‐Régis Burgel, Christina Keen, et al.. (2025). Validity of the Chronic Airways Assessment Test (CAAT) in asthma, asthma+COPD and COPD in NOVELTY. ERJ Open Research. 11(4). 1359–2024.
3.
Ambery, Phil, Grzegorz Zając, J.O. Almquist, et al.. (2024). The effect of AZD9567 vs. prednisolone on glycaemic control in patients with type 2 diabetes mellitus: Results from a phase 2a clinical trial. British Journal of Clinical Pharmacology. 90(8). 1921–1931. 1 indexed citations
4.
Laar, Jacob M. van, J.O. Almquist, Graham Belfield, et al.. (2023). AZD9567 versus prednisolone in patients with active rheumatoid arthritis: A phase IIa, randomized, double‐blind, efficacy, and safety study. Clinical and Translational Science. 16(12). 2494–2506. 7 indexed citations
5.
Åstrand, Annika, Scott H. Donaldson, Raolat M. Abdulai, et al.. (2022). AZD5634, an inhaled ENaC inhibitor, in healthy subjects and patients with cystic fibrosis. Journal of Cystic Fibrosis. 21(4). 684–690. 8 indexed citations
6.
Nemes, Szilárd, Joanne Betts, John Mo, et al.. (2021). Diurnal variation in DLCO and non-standardized study procedures may cause a false positive safety signal in clinical trials. Respiratory Medicine. 191. 106705–106705.
7.
Usmani, Omar S., MeiLan K. Han, David A. Kaminsky, et al.. (2021). Seven Pillars of Small Airways Disease in Asthma and COPD. CHEST Journal. 160(1). 114–134. 30 indexed citations
8.
9.
O’Byrne, Paul M., J. Mark FitzGerald, Eric D. Bateman, et al.. (2020). Effect of a single day of increased as-needed budesonide–formoterol use on short-term risk of severe exacerbations in patients with mild asthma: a post-hoc analysis of the SYGMA 1 study. The Lancet Respiratory Medicine. 9(2). 149–158. 41 indexed citations
10.
Karlsson, Niklas, Mark J. Atkinson, Hana Müllerová, et al.. (2020). Validation of a diagnosis-agnostic symptom questionnaire for asthma and/or COPD. ERJ Open Research. 7(1). 828–2020. 5 indexed citations
11.
Edman, K. A. P., Mahdi Hashemi, Eva-Marie Andersson, et al.. (2019). Effects of a selective glucocorticoid receptor modulator (AZD9567) versus prednisolone in healthy volunteers: two phase 1, single-blind, randomised controlled trials. The Lancet Rheumatology. 2(1). e31–e41. 17 indexed citations
12.
Bateman, Eric D., Helen K. Reddel, Paul M. O’Byrne, et al.. (2018). As-Needed Budesonide–Formoterol versus Maintenance Budesonide in Mild Asthma. New England Journal of Medicine. 378(20). 1877–1887. 303 indexed citations breakdown →
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O’Byrne, Paul M., Hristo Metev, Margareta Puu, et al.. (2016). Efficacy and safety of a CXCR2 antagonist, AZD5069, in patients with uncontrolled persistent asthma: a randomised, double-blind, placebo-controlled trial. The Lancet Respiratory Medicine. 4(10). 797–806. 196 indexed citations
16.
Keen, Christina, Anna‐Carin Olin, Göran Wennergren, & Per Gustafsson. (2011). Small airway function, exhaled NO and airway hyper-responsiveness in paediatric asthma. Respiratory Medicine. 105(10). 1476–1484. 53 indexed citations
17.
Keen, Christina, et al.. (2010). Low levels of exhaled nitric oxide are associated with impaired lung function in cystic fibrosis. Pediatric Pulmonology. 45(3). 241–248. 35 indexed citations
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19.
Johansson, Sven‐Erik, et al.. (2005). Low levels of CC16 in nasal fluid of children with birch pollen‐induced rhinitis. Allergy. 60(5). 638–642. 34 indexed citations
20.

Rankless uses publication and citation data sourced from OpenAlex, an open and comprehensive bibliographic database. While OpenAlex provides broad and valuable coverage of the global research landscape, it—like all bibliographic datasets—has inherent limitations. These include incomplete records, variations in author disambiguation, differences in journal indexing, and delays in data updates. As a result, some metrics and network relationships displayed in Rankless may not fully capture the entirety of a scholar's output or impact.

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