Publications 2025

Granerud BK, Kaarbø M, Al-Baldawi H, The Norwegian Sars-CoV-Study Group Investigators, Otterdal K, Halvorsen B, Lind A, Rayner S, Holter JC, Dudman S (2025)
Droplet Digital PCR or Real-Time PCR as a Method for Quantifying SARS-CoV-2 RNA in Plasma-Is There a Difference?
Viruses, 17 (6)
DOI 10.3390/v17060772, PubMed 40573363

Publications 2024

Alirezaylavasani A, Egner IM, Dahl B, Chopra A, de Matos Kasahara T, Goll GL, Jahnsen J, Grødeland G, Vaage JT, Lund-Johansen F, Holter JC, Halvorsen B, Jørgensen KK, Munthe LA, Kared H (2024)
Deficient SARS-CoV-2 hybrid immunity during inflammatory bowel disease
Clin Immunol, 271, 110404
DOI 10.1016/j.clim.2024.110404, PubMed 39645159

Alirezaylavasani A, Skeie LG, Egner IM, Chopra A, Dahl TB, Prebensen C, Vaage JT, Halvorsen B, Lund-Johansen F, Tonby K, Reikvam DH, Stiksrud B, Holter JC, Dyrhol-Riise AM, Munthe LA, Kared H (2024)
Vaccine responses and hybrid immunity in people living with HIV after SARS-CoV-2 breakthrough infections
NPJ Vaccines, 9 (1), 185
DOI 10.1038/s41541-024-00972-3, PubMed 39384763

Barratt-Due A, Pettersen K, Børresdatter-Dahl T, Holter JC, Grønli RH, Dyrhol-Riise AM, Lerum TV, Holten AR, Tonby K, Trøseid M, Skjønsberg OH, Granerud BK, Heggelund L, Kildal AB, Schjalm C, Aaløkken TM, Aukrust P, Ueland T, Mollnes TE, Halvorsen B, NOR‐Solidarity study groupThe Norwegian SARS‐CoV‐2 study group (2024)
Escalated complement activation during hospitalization is associated with higher risk of 60-day mortality in SARS-CoV-2-infected patients
J Intern Med, 296 (1), 80-92
DOI 10.1111/joim.13783, PubMed 38539241

Pazukhina E, Garcia-Gallo E, Reyes LF, Kildal AB, Jassat W, Dryden M, Holter JC, Chatterjee A, Gomez K, Søraas A, Puntoni M, Latronico N, Bozza FA, Edelstein M, Gonçalves BP, Kartsonaki C, Kruglova O, Gaião S, Chow YP, Doshi Y, Duque Vallejo SI, Ibáñez-Prada ED, Fuentes YV, Hastie C, O'Hara ME et al. (2024)
Long Covid: a global health issue - a prospective, cohort study set in four continents
BMJ Glob Health, 9 (10)
DOI 10.1136/bmjgh-2024-015245, PubMed 39433402

Publications 2023

Camirand-Lemyre F, Merson L, Tirupakuzhi Vijayaraghavan BK, Burrell AJC, Citarella BW, Domingue MP, Lévesque S, Usuf E, Wils EJ, Ohshimo S, Martin-Loeches I, Sandulescu O, Laake JH, Lamontagne F, ISARIC Clinical Characterisation Group (2023)
Implementation of Recommendations on the Use of Corticosteroids in Severe COVID-19
JAMA Netw Open, 6 (12), e2346502
DOI 10.1001/jamanetworkopen.2023.46502, PubMed 38147336

Cho SM, White N, Premraj L, Battaglini D, Fanning J, Suen J, Bassi GL, Fraser J, Robba C, Griffee M, Singh B, Citarella BW, Merson L, Solomon T, Thomson D, (2023)
Neurological manifestations of COVID-19 in adults and children
Brain, 146 (4), 1648-1661
DOI 10.1093/brain/awac332, PubMed 36087305

COVID-19 Host Genetics Initiative (2023)
A second update on mapping the human genetic architecture of COVID-19
Nature, 621 (7977), E7-E26
DOI 10.1038/s41586-023-06355-3, PubMed 37674002

Floeystad HK, Holter JC, Husebye E, Siljan WW, Berild D, Holm AM, Heggelund L (2023)
Nausea Predicts Bacteremia in Immunocompetent Patients with Pneumococcal Community-Acquired Pneumonia: Secondary Data Analysis from a Prospective Cohort
J Clin Med, 12 (12)
DOI 10.3390/jcm12123924, PubMed 37373619

Gonçalves BP, Jassat W, Baruch J, Hashmi M, Rojek A, Dasgupta A, Martin-Loeches I, Reyes LF, Piubelli C, Citarella BW, Kartsonaki C, Lefèvre B, López Revilla JW, Lunn M, Harrison EM, Kraemer MUG, Shrapnel S, Horby P, Bisoffi Z, Olliaro PL, Merson L, ISARIC Clinical Characterisation Group (2023)
A multi-country analysis of COVID-19 hospitalizations by vaccination status
Med, 4 (11), 797-812.e2
DOI 10.1016/j.medj.2023.08.005, PubMed 37738979

Griffee MJ, Bozza PT, Reyes LF, Eddington DP, Rosenberger D, Merson L, Citarella BW, Fanning JP, Alexander PMA, Fraser J, Dalton H, Cho SM, ISARIC Clinical Characterisation Group (2023)
Thrombotic and hemorrhagic complications of COVID-19 in adults hospitalized in high-income countries compared with those in adults hospitalized in low- and middle-income countries in an international registry
Res Pract Thromb Haemost, 7 (5), 102142
DOI 10.1016/j.rpth.2023.102142, PubMed 37601011

Kartsonaki C, Baillie JK, Barrio NG, Baruch J, Beane A, Blumberg L, Bozza F, Broadley T, Burrell A, Carson G, Citarella BW, Dagens A, Dankwa EA, Donnelly CA, Dunning J, Elotmani L, Escher M, Farshait N, Goffard JC, Gonçalves BP, Hall M, Hashmi M, Sim Lim Heng B, Ho A, Jassat W et al. (2023)
Characteristics and outcomes of an international cohort of 600 000 hospitalized patients with COVID-19
Int J Epidemiol, 52 (2), 355-376
DOI 10.1093/ije/dyad012, PubMed 36850054

Mohn KG, Bredholt G, Onyango TB, Brokstad KA, Zhou F, Holter JC, Tonby K, Dyrhol-Riise AM, Cox RJ, Bergen COVID-19 Research Group, Norwegian SARS-CoV-2 Study Group (2023)
SARS-CoV-2 infection induces long-lived B and T-cell responses up to 15 months post-infection, irrespective of disease severity
J Infect, 87 (4), 346-349
DOI 10.1016/j.jinf.2023.05.023, PubMed 37295510

Murphy SL, Halvorsen B, Holter JC, Huse C, Tveita A, Trøseid M, Hoel H, Kildal AB, Holten AR, Lerum TV, Skjønsberg OH, Michelsen AE, Aaløkken TM, NOR-SOLIDARITY Consortium, The Norwegian SARS-CoV-2 study group investigators, Tonby K, Lind A, Dudman S, Granerud BK, Heggelund L, Bøe S, Dyrholt-Riise AM, Aukrust P, Barratt-Due A, Ueland T, Dahl TB (2023)
Circulating markers of extracellular matrix remodelling in severe COVID-19 patients
J Intern Med, 294 (6), 784-797
DOI 10.1111/joim.13725, PubMed 37718572

Nissen-Meyer LSH, Macpherson ME, Skeie LG, Hvalryg M, Llohn AH, Steinsvåg TT, Fenstad MH, Tveita A, Kristoffersen EK, Sundic T, Lund-Johansen F, Vaage JT, Flesland Ø, Dyrhol-Riise AM, Holter JC, Hervig TA, Fevang B (2023)
COVID-19 patients treated with convalescent plasma
Tidsskr Nor Laegeforen, 143 (11)
DOI 10.4045/tidsskr.22.0577, PubMed 37589359

Oppen K, Brede C, Skadberg Ø, Steinsvik T, Holter JC, Michelsen AE, Heggelund L (2023)
Hepcidin analysis in pneumonia: Comparison of immunoassay and LC-MS/MS
Ann Clin Biochem, 60 (5), 298-305
DOI 10.1177/00045632231159529, PubMed 36759502

Quiles-Jiménez A, Sousa MML, Huse C, Dyrhol-Riise AM, Holter JC, Christensen EE, Tonby K, Holten AR, Aukrust P, Bjørås M, Dahl TB, Halvorsen B (2023)
Severely ill COVID-19 patients have altered circulating levels of proteins controlling the epitranscriptome
J Infect, 86 (6), 593-595
DOI 10.1016/j.jinf.2023.03.002, PubMed 36889510

Reyes LF, Garcia-Gallo E, Murthy S, Fuentes YV, Serrano CC, Ibáñez-Prada ED, Lee J, Rojek A, Citarella BW, Gonçalves BP, Dunning J, Rätsep I, Viñan-Garces AE, Kartsonaki C, Rello J, Martin-Loeches I, Shankar-Hari M, Olliaro PL, Merson L, ISARIC Characterisation Group (2023)
Major adverse cardiovascular events (MACE) in patients with severe COVID-19 registered in the ISARIC WHO clinical characterization protocol: A prospective, multinational, observational study
J Crit Care, 77, 154318
DOI 10.1016/j.jcrc.2023.154318, PubMed 37167775

Shah N, Xue B, Xu Z, Yang H, Marwali E, Dalton H, Payne PPR, Lu C, Said AS, ISARIC Clinical Characterisation Group (2023)
Validation of extracorporeal membrane oxygenation mortality prediction and severity of illness scores in an international COVID-19 cohort
Artif Organs, 47 (9), 1490-1502
DOI 10.1111/aor.14542, PubMed 37032544

Tedbury PR, Manfredi C, Degenhardt F, Conway J, Horwath MC, McCracken C, Sorscher AJ, Moreau S, Wright C, Edwards C, Brewer J, Guarner J, de Wit E, Williamson BN, Suthar MS, Ong YT, Roback JD, Alter DN, Holter JC, Karlsen TH, Sacchi N, Romero-Gómez M, Invernizzi P, Fernández J, Buti M et al. (2023)
Mechanisms by which the cystic fibrosis transmembrane conductance regulator may influence SARS-CoV-2 infection and COVID-19 disease severity
FASEB J, 37 (11), e23220
DOI 10.1096/fj.202300077R, PubMed 37801035

Tirupakuzhi Vijayaraghavan BK, Bishnu S, Baruch J, Citarella BW, Kartsonaki C, Meeyai A, Mohamed Z, Ohshimo S, Lefèvre B, Al-Fares A, Calvache JA, Taccone FS, Olliaro P, Merson L, Adhikari NKJ, ISARIC Clinical Characterisation Group (2023)
Liver injury in hospitalized patients with COVID-19: An International observational cohort study
PLoS One, 18 (9), e0277859
DOI 10.1371/journal.pone.0277859, PubMed 37703268

Tran TT, Vaage EB, Mehta A, Chopra A, Tietze L, Kolderup A, Anthi A, König M, Nygaard G, Lind A, Müller F, Nissen-Meyer LS, Magnus P, Trogstad L, Mjaaland S, Søraas A, Midtvedt K, Åsberg A, Barratt-Due A, Medhus AW, Høivik ML, Lundin K, Karlsen RF, Dahle R, Danielsson K et al. (2023)
Author Correction: Titers of antibodies against ancestral SARS-CoV-2 correlate with levels of neutralizing antibodies to multiple variants
NPJ Vaccines, 8 (1), 4
DOI 10.1038/s41541-023-00600-6, PubMed 36697432

Trøseid M, Holter JC, Holm K, Vestad B, Sazonova T, Granerud BK, Dyrhol-Riise AM, Holten AR, Tonby K, Kildal AB, Heggelund L, Tveita A, Bøe S, Müller KE, Jenum S, Hov JR, Ueland T, Norwegian SARS-CoV-2 study group (2023)
Gut microbiota composition during hospitalization is associated with 60-day mortality after severe COVID-19
Crit Care, 27 (1), 69
DOI 10.1186/s13054-023-04356-2, PubMed 36814280

Wainstein M, Spyrison N, Dai D, Ghadimi M, Chávez-Iñiguez JS, Rizo-Topete L, Citarella BW, Merson L, Pole JD, Claure-Del Granado R, Johnson DW, Shrapnel S, ISARIC Characterization Group (2023)
Association of Country Income Level With the Characteristics and Outcomes of Critically Ill Patients Hospitalized With Acute Kidney Injury and COVID-19
Kidney Int Rep, 8 (8), 1514-30 (in press)
DOI 10.1016/j.ekir.2023.05.015, PubMed 37360820

Publications 2022

Baruch J, Rojek A, Kartsonaki C, Vijayaraghavan BKT, Gonçalves BP, Pritchard MG, Merson L, Dunning J, Hall M, Sigfrid L, Citarella BW, Murthy S, Yeabah TO, Olliaro P, ISARIC Clinical Characterisation Group (2022)
Symptom-based case definitions for COVID-19: Time and geographical variations for detection at hospital admission among 260,000 patients
Influenza Other Respir Viruses, 16 (6), 1040-1050
DOI 10.1111/irv.13039, PubMed 36825252

Bouziotis J, Arvanitakis M, Preiser JC, ISARIC Clinical Characterisation Group (2022)
Association of body mass index with COVID-19 related in-hospital death
Clin Nutr, 41 (12), 2924-2926
DOI 10.1016/j.clnu.2022.01.017, PubMed 35123821

Cruz R, Diz-de Almeida S, López de Heredia M, Quintela I, Ceballos FC, Pita G, Lorenzo-Salazar JM, González-Montelongo R, Gago-Domínguez M, Sevilla Porras M, Tenorio Castaño JA, Nevado J, Aguado JM, Aguilar C, Aguilera-Albesa S, Almadana V, Almoguera B, Alvarez N, Andreu-Bernabeu Á, Arana-Arri E, Arango C, Arranz MJ, Artiga MJ, Baptista-Rosas RC, Barreda-Sánchez M et al. (2022)
Novel genes and sex differences in COVID-19 severity
Hum Mol Genet, 31 (22), 3789-3806
DOI 10.1093/hmg/ddac132, PubMed 35708486

Degenhardt F, Ellinghaus D, Juzenas S, Lerga-Jaso J, Wendorff M, Maya-Miles D, Uellendahl-Werth F, ElAbd H, Rühlemann MC, Arora J, Özer O, Lenning OB, Myhre R, Vadla MS, Wacker EM, Wienbrandt L, Blandino Ortiz A, de Salazar A, Garrido Chercoles A, Palom A, Ruiz A, Garcia-Fernandez AE, Blanco-Grau A, Mantovani A, Zanella A et al. (2022)
Detailed stratified GWAS analysis for severe COVID-19 in four European populations
Hum Mol Genet, 31 (23), 3945-3966
DOI 10.1093/hmg/ddac158, PubMed 35848942

Gohli J, Brantsæter AB, Bøifot KO, Grub C, Granerud BK, Holter JC, Riise AMD, Smedholen MF, Dybwad M (2022)
SARS-CoV-2 in the Air Surrounding Patients during Nebulizer Therapy
Can J Infect Dis Med Microbiol, 2022, 9297974
DOI 10.1155/2022/9297974, PubMed 36213437

Gonçalves BP, Hall M, Jassat W, Balan V, Murthy S, Kartsonaki C, Semple MG, Rojek A, Baruch J, Reyes LF, Dasgupta A, Dunning J, Citarella BW, Pritchard M, Martín-Quiros A, Sili U, Baillie JK, Aryal D, Arabi Y, Rashan A, Angheben A, Caoili J, Carrier FM, Harrison EM, Gómez-Junyent J et al. (2022)
An international observational study to assess the impact of the Omicron variant emergence on the clinical epidemiology of COVID-19 in hospitalised patients
Elife, 11
DOI 10.7554/eLife.80556, PubMed 36197074

Granerud BK, Ueland T, Lind A, Søraas A, Fevang B, Steffensen AK, Al-Baldawi H, Lund-Johansen F, Aukrust P, Halvorsen B, Dahl TB, Dudman S, Müller F, Holter JC (2022)
Omicron Variant Generates a Higher and More Sustained Viral Load in Nasopharynx and Saliva Than the Delta Variant of SARS-CoV-2
Viruses, 14 (11)
DOI 10.3390/v14112420, PubMed 36366518

Gregersen I, Ueland T, Holter JC, Olsen MB, Michelsen AE, Murphy SL, Tveita AA, Henriksen KN, Hoel H, Nordberg LB, Holten AR, Edvardsen T, Yang K, Heggelund L, Trøseid M, Müller F, Kildal AB, Dyrhol-Riise AM, Barratt-Due A, Dahl TB, Aukrust P, Halvorsen B, NOR-SOLIDARITY consortium, The Norwegian SARS-CoV-2 Study Group investigators (2022)
CXCL16 associates with adverse outcome and cardiac involvement in hospitalized patients with Covid-19
J Infect, 85 (6), 702-769
DOI 10.1016/j.jinf.2022.09.029, PubMed 36216188

Hammer Q, Dunst J, Christ W, Picarazzi F, Wendorff M, Momayyezi P, Huhn O, Netskar HK, Maleki KT, García M, Sekine T, Sohlberg E, Azzimato V, Aouadi M, Karolinska COVID-19 Study Group, Severe COVID-19 GWAS Group, Degenhardt F, Franke A, Spallotta F, Mori M, Michaëlsson J, Björkström NK, Rückert T, Romagnani C, Horowitz A et al. (2022)
SARS-CoV-2 Nsp13 encodes for an HLA-E-stabilizing peptide that abrogates inhibition of NKG2A-expressing NK cells
Cell Rep, 38 (10), 110503
DOI 10.1016/j.celrep.2022.110503, PubMed 35235832

ISARIC Clinical Characterization Group, Garcia-Gallo E, Merson L, Kennon K, Kelly S, Citarella BW, Fryer DV, Shrapnel S, Lee J, Duque S, Fuentes YV, Balan V, Smith S, Wei J, Gonçalves BP, Russell CD, Sigfrid L, Dagens A, Olliaro PL, Baruch J, Kartsonaki C, Dunning J, Rojek A, Rashan A, Beane A et al. (2022)
ISARIC-COVID-19 dataset: A Prospective, Standardized, Global Dataset of Patients Hospitalized with COVID-19
Sci Data, 9 (1), 454
DOI 10.1038/s41597-022-01534-9, PubMed 35908040

Olsen MB, Huse C, de Sousa MML, Murphy SL, Sarno A, Obermann TS, Yang K, Holter JC, Jørgensen MJ, Christensen EE, Wang W, Ji P, Heggelund L, Hoel H, Dyrhol-Riise AM, Gregersen I, Aukrust P, Bjørås M, Halvorsen B, Dahl TB (2022)
DNA Repair Mechanisms are Activated in Circulating Lymphocytes of Hospitalized Covid-19 Patients
J Inflamm Res, 15, 6629-6644
DOI 10.2147/JIR.S379331, PubMed 36514358

Oppen K, Ueland T, Michelsen AE, Aukrust P, Steinsvik T, Skadberg Ø, Brede C, Siljan WW, Husebye E, Holter JC, Heggelund L (2022)
Hepcidin predicts 5-year mortality after community-acquired pneumonia
Infect Dis (Lond), 54 (6), 403-409
DOI 10.1080/23744235.2021.2022194, PubMed 35057702

Reyes LF, Murthy S, Garcia-Gallo E, Irvine M, Merson L, Martin-Loeches I, Rello J, Taccone FS, Fowler RA, Docherty AB, Kartsonaki C, Aragao I, Barrett PW, Beane A, Burrell A, Cheng MP, Christian MD, Cidade JP, Citarella BW, Donnelly CA, Fernandes SM, French C, Haniffa R, Harrison EM, Ho AYW et al. (2022)
Clinical characteristics, risk factors and outcomes in patients with severe COVID-19 registered in the International Severe Acute Respiratory and Emerging Infection Consortium WHO clinical characterisation protocol: a prospective, multinational, multicentre, observational study
ERJ Open Res, 8 (1)
DOI 10.1183/23120541.00552-2021, PubMed 35169585

Reyes LF, Murthy S, Garcia-Gallo E, Merson L, Ibáñez-Prada ED, Rello J, Fuentes YV, Martin-Loeches I, Bozza F, Duque S, Taccone FS, Fowler RA, Kartsonaki C, Gonçalves BP, Citarella BW, Aryal D, Burhan E, Cummings MJ, Delmas C, Diaz R, Figueiredo-Mello C, Hashmi M, Panda PK, Jiménez MP, Rincon DFB et al. (2022)
Respiratory support in patients with severe COVID-19 in the International Severe Acute Respiratory and Emerging Infection (ISARIC) COVID-19 study: a prospective, multinational, observational study
Crit Care, 26 (1), 276
DOI 10.1186/s13054-022-04155-1, PubMed 36100904

Siljan WW, Sivakumaran D, Ritz C, Jenum S, Ottenhoff TH, Ulvestad E, Holter JC, Heggelund L, Grewal HM (2022)
Host Transcriptional Signatures Predict Etiology in Community-Acquired Pneumonia: Potential Antibiotic Stewardship Tools
Biomark Insights, 17, 11772719221099130
DOI 10.1177/11772719221099130, PubMed 35693251

Søraas A, Grødeland G, Granerud BK, Ueland T, Lind A, Fevang B, Murphy SL, Huse C, Nygaard AB, Steffensen AK, Al-Baldawi H, Holberg-Petersen M, Andresen LL, Ågnes C, Ranheim T, Schanke Y, Istre M, Dahl JA, Chopra A, Dudman S, Kaarbø M, Andersen JT, Vaage EB, Tran TT, Vaage JT et al. (2022)
Breakthrough infections with the omicron and delta variants of SARS-CoV-2 result in similar re-activation of vaccine-induced immunity
Front Immunol, 13, 964525
DOI 10.3389/fimmu.2022.964525, PubMed 36159859

Søvik S, Barrat-Due A, Kåsine T, Olasveengen T, Strand MW, Tveita AA, Berdal JE, Lehre MA, Lorentsen T, Heggelund L, Stenstad T, Ringstad J, Müller F, Aukrust P, Holter JC, Nordøy I (2022)
Corticosteroids and superinfections in COVID-19 patients on invasive mechanical ventilation
J Infect, 85 (1), 57-63
DOI 10.1016/j.jinf.2022.05.015, PubMed 35605805

Tran TT, Vaage EB, Mehta A, Chopra A, Tietze L, Kolderup A, Anthi A, König M, Nygaard G, Lind A, Müller F, Nissen-Meyer LS, Magnus P, Trogstad L, Mjaaland S, Søraas A, Midtvedt K, Åsberg A, Barratt-Due A, Medhus AW, Høivik ML, Lundin K, Karlsen RF, Dahle R, Danielsson K et al. (2022)
Titers of antibodies against ancestral SARS-CoV-2 correlate with levels of neutralizing antibodies to multiple variants
NPJ Vaccines, 7 (1), 174
DOI 10.1038/s41541-022-00586-7, PubMed 36585405

Trøseid M, Dahl TB, Holter JC, Kildal AB, Murphy SL, Yang K, Quiles-Jiménez A, Heggelund L, Müller KE, Tveita A, Michelsen AE, Bøe S, Holten AR, Hoel H, Mathiessen A, Aaløkken TM, Fevang B, Granerud BK, Tonby K, Henriksen KN, Lerum TV, Müller F, Skjønsberg OH, Barratt-Due A, Dyrhol-Riise AM et al. (2022)
Persistent T-cell exhaustion in relation to prolonged pulmonary pathology and death after severe COVID-19: Results from two Norwegian cohort studies
J Intern Med, 292 (5), 816-828
DOI 10.1111/joim.13549, PubMed 35982589

Tveita A, Murphy SL, Holter JC, Kildal AB, Michelsen AE, Lerum TV, Kaarbø M, Heggelund L, Holten AR, Finbråten AK, Müller KE, Mathiessen A, Bøe S, Fevang B, Granerud BK, Tonby K, Lind A, Dudman SG, Henriksen KN, Müller F, Skjønsberg OH, Trøseid M, Barratt-Due A, Dyrhol-Riise AM, Aukrust P et al. (2022)
High Circulating Levels of the Homeostatic Chemokines CCL19 and CCL21 Predict Mortality and Disease Severity in COVID-19
J Infect Dis, 226 (12), 2150-2160
DOI 10.1093/infdis/jiac313, PubMed 35876699

Wainstein M, MacDonald S, Fryer D, Young K, Balan V, Begum H, Burrell A, Citarella BW, Cobb JP, Kelly S, Kennon K, Lee J, Merson L, Murthy S, Nichol A, Semple MG, Strudwick S, Webb SA, Rossignol P, Claure-Del Granado R, Shrapnel S, ISARIC Clinical Characterisation Group (2022)
Use of an extended KDIGO definition to diagnose acute kidney injury in patients with COVID-19: A multinational study using the ISARIC-WHO clinical characterisation protocol
PLoS Med, 19 (4), e1003969
DOI 10.1371/journal.pmed.1003969, PubMed 35442972

Publications 2021

Christensen EE, Jørgensen MJ, Nore KG, Dahl TB, Yang K, Ranheim T, Huse C, Lind A, Nur S, Stiksrud B, Jenum S, Tonby K, Holter JC, Holten AR, Halvorsen B, Dyrhol-Riise AM (2021)
Critical COVID-19 is associated with distinct leukocyte phenotypes and transcriptome patterns
J Intern Med, 290 (3), 677-692
DOI 10.1111/joim.13310, PubMed 34080738

ISARIC Clinical Characterisation Group (2021)
The value of open-source clinical science in pandemic response: lessons from ISARIC
Lancet Infect Dis, 21 (12), 1623-1624
DOI 10.1016/S1473-3099(21)00565-X, PubMed 34619109

ISARIC Clinical Characterisation Group, Hall MD, Baruch J, Carson G, Citarella BW, Dagens A, Dankwa EA, Donnelly CA, Dunning J, Escher M, Kartsonaki C, Merson L, Pritchard M, Wei J, Horby PW, Rojek A, Olliaro PL (2021)
Ten months of temporal variation in the clinical journey of hospitalised patients with COVID-19: An observational cohort
Elife, 10
DOI 10.7554/eLife.70970, PubMed 34812731

Nakanishi T, Pigazzini S, Degenhardt F, Cordioli M, Butler-Laporte G, Maya-Miles D, Bujanda L, Bouysran Y, Niemi ME, Palom A, Ellinghaus D, Khan A, Martínez-Bueno M, Rolker S, Amitrano S, Roade Tato L, Fava F, FinnGen, COVID-19 Host Genetics Initiative (HGI), Spinner CD, Prati D, Bernardo D, Garcia F, Darcis G, Fernández-Cadenas I et al. (2021)
Age-dependent impact of the major common genetic risk factor for COVID-19 on severity and mortality
J Clin Invest, 131 (23)
DOI 10.1172/JCI152386, PubMed 34597274

Oppen K, Ueland T, Siljan WW, Skadberg Ø, Brede C, Lauritzen T, Aukrust P, Steinsvik T, Husebye E, Michelsen AE, Holter JC, Heggelund L (2021)
Hepcidin and Ferritin Predict Microbial Etiology in Community-Acquired Pneumonia
Open Forum Infect Dis, 8 (4), ofab082
DOI 10.1093/ofid/ofab082, PubMed 33880390

Sigfrid L, Cevik M, Jesudason E, Lim WS, Rello J, Amuasi J, Bozza F, Palmieri C, Munblit D, Holter JC, Kildal AB, Reyes LF, Russell CD, Ho A, Turtle L, Drake TM, Beltrame A, Hann K, Bangura IR, Fowler R, Lakoh S, Berry C, Lowe DJ, McPeake J, Hashmi M et al. (2021)
What is the recovery rate and risk of long-term consequences following a diagnosis of COVID-19? A harmonised, global longitudinal observational study protocol
BMJ Open, 11 (3), e043887
DOI 10.1136/bmjopen-2020-043887, PubMed 33692181

Ueland T, Dyrhol-Riise AM, Woll BM, Holten AR, Petteresen F, Lind A, Dudman SG, Heggelund L, Holter JC, Aukrust P (2021)
Increased inflammatory markers reflecting fibrogenesis are independently associated with cardiac involvement in hospitalized COVID-19 patients
J Infect, 82 (5), 186-230
DOI 10.1016/j.jinf.2021.01.017, PubMed 33516748

Aamodt AH, Høgestøl EA, Popperud TH, Holter JC, Dyrhol-Riise AM, Tonby K, Stiksrud B, Quist-Paulsen E, Berge T, Barratt-Due A, Aukrust P, Heggelund L, Blennow K, Zetterberg H, Harbo HF (2021)
Blood neurofilament light concentration at admittance: a potential prognostic marker in COVID-19
J Neurol, 268 (10), 3574-3583
DOI 10.1007/s00415-021-10517-6, PubMed 33743046

Aarskog NR, Aass HC, Holter JC, Rostrup M, Holten AR (2021)
Interleukin-6 in Critical Coronavirus Disease 2019, a Driver of Lung Inflammation of Systemic Origin?
Crit Care Explor, 3 (10), e0542
DOI 10.1097/CCE.0000000000000542, PubMed 34604785

Publications 2020

Hoel H, Heggelund L, Reikvam DH, Stiksrud B, Ueland T, Michelsen AE, Otterdal K, Muller KE, Lind A, Muller F, Dudman S, Aukrust P, Dyrhol-Riise AM, Holter JC, Trøseid M (2020)
Elevated markers of gut leakage and inflammasome activation in COVID-19 patients with cardiac involvement
J Intern Med, 289 (4), 523-531
DOI 10.1111/joim.13178, PubMed 32976665

Holter JC, Pischke SE, de Boer E, Lind A, Jenum S, Holten AR, Tonby K, Barratt-Due A, Sokolova M, Schjalm C, Chaban V, Kolderup A, Tran T, Tollefsrud Gjølberg T, Skeie LG, Hesstvedt L, Ormåsen V, Fevang B, Austad C, Müller KE, Fladeby C, Holberg-Petersen M, Halvorsen B, Müller F, Aukrust P et al. (2020)
Systemic complement activation is associated with respiratory failure in COVID-19 hospitalized patients
Proc Natl Acad Sci U S A, 117 (40), 25018-25025
DOI 10.1073/pnas.2010540117, PubMed 32943538

Jøntvedt Jørgensen M, Holter JC, Christensen EE, Schjalm C, Tonby K, Pischke SE, Jenum S, Skeie LG, Nur S, Lind A, Opsand H, Enersen TB, Grøndahl R, Hermann A, Dudman S, Muller F, Ueland T, Mollnes TE, Aukrust P, Heggelund L, Holten AR, Dyrhol-Riise AM (2020)
Increased interleukin-6 and macrophage chemoattractant protein-1 are associated with respiratory failure in COVID-19
Sci Rep, 10 (1), 21697
DOI 10.1038/s41598-020-78710-7, PubMed 33303843

Ueland T, Heggelund L, Lind A, Holten AR, Tonby K, Michelsen AE, Jenum S, Jørgensen MJ, Barratt-Due A, Skeie LG, Nordøy I, Aanensen Fraz MS, Quist-Paulsen E E, Pischke SE, Johal SK, Hesstvedt L, Bogen M, Fevang B, Halvorsen B, Müller F, Bekken GK, Mollnes TE, Dudman S, Aukrust P, Dyrhol-Riise AM et al. (2020)
Elevated plasma sTIM-3 levels in patients with severe COVID-19
J Allergy Clin Immunol, 147 (1), 92-98
DOI 10.1016/j.jaci.2020.09.007, PubMed 32971109

Ueland T, Holter JC, Holten AR, Müller KE, Lind A, Bekken GK, Dudman S, Aukrust P, Dyrhol-Riise AM, Heggelund L (2020)
Distinct and early increase in circulating MMP-9 in COVID-19 patients with respiratory failure
J Infect, 81 (3), e41-e43
DOI 10.1016/j.jinf.2020.06.061, PubMed 32603675

Publications 2019

Siljan WW, Holter JC, Michelsen AE, Nymo SH, Lauritzen T, Oppen K, Husebye E, Ueland T, Mollnes TE, Aukrust P, Heggelund L (2019)
Inflammatory biomarkers are associated with aetiology and predict outcomes in community-acquired pneumonia: results of a 5-year follow-up cohort study
ERJ Open Res, 5 (1)
DOI 10.1183/23120541.00014-2019, PubMed 30863773

Publications 2018

Siljan WW, Holter JC, Nymo SH, Husebye E, Ueland T, Skattum L, Bosnes V, Garred P, Frøland SS, Mollnes TE, Aukrust P, Heggelund L (2018)
Low Levels of Immunoglobulins and Mannose-Binding Lectin Are Not Associated With Etiology, Severity, or Outcome in Community-Acquired Pneumonia
Open Forum Infect Dis, 5 (2), ofy002
DOI 10.1093/ofid/ofy002, PubMed 29410975

Publications 2017

Siljan WW, Holter JC, Nymo SH, Husebye E, Ueland T, Aukrust P, Mollnes TE, Heggelund L (2017)
Cytokine responses, microbial aetiology and short-term outcome in community-acquired pneumonia
Eur J Clin Invest, 48 (1)
DOI 10.1111/eci.12865, PubMed 29171871

Publications 2016

Holter JC, Ueland T, Jenum PA, Müller F, Brunborg C, Frøland SS, Aukrust P, Husebye E, Heggelund L (2016)
Risk Factors for Long-Term Mortality after Hospitalization for Community-Acquired Pneumonia: A 5-Year Prospective Follow-Up Study
PLoS One, 11 (2), e0148741
DOI 10.1371/journal.pone.0148741, PubMed 26849359

Holter JC, Ueland T, Norseth J, Brunborg C, Frøland SS, Husebye E, Aukrust P, Heggelund L (2016)
Vitamin D Status and Long-Term Mortality in Community-Acquired Pneumonia: Secondary Data Analysis from a Prospective Cohort
PLoS One, 11 (7), e0158536
DOI 10.1371/journal.pone.0158536, PubMed 27367810

Siljan WW, Holter JC, Nymo SH, Schjalm C, Müller F, Jenum PA, Husebye E, Ueland T, Aukrust P, Mollnes TE, Heggelund L (2016)
Circulating cell-free DNA is elevated in community-acquired bacterial pneumonia and predicts short-term outcome
J Infect, 73 (4), 383-6
DOI 10.1016/j.jinf.2016.07.011, PubMed 27452197

Publications 2015

Holter JC, Müller F, Bjørang O, Samdal HH, Marthinsen JB, Jenum PA, Ueland T, Frøland SS, Aukrust P, Husebye E, Heggelund L (2015)
Etiology of community-acquired pneumonia and diagnostic yields of microbiological methods: a 3-year prospective study in Norway
BMC Infect Dis, 15, 64
DOI 10.1186/s12879-015-0803-5, PubMed 25887603

Publications 2014

Holmås K, Fostervold A, Stahlhut SG, Struve C, Holter JC (2014)
Emerging K1 serotype Klebsiella pneumoniae primary liver abscess: three cases presenting to a single university hospital in Norway
Clin Case Rep, 2 (4), 122-7
DOI 10.1002/ccr3.77, PubMed 25356268

Publications 2007

Bjerkeli V, Damås JK, Fevang B, Holter JC, Aukrust P, Frøland SS (2007)
Increased expression of fractalkine (CX3CL1) and its receptor, CX3CR1, in Wegener's granulomatosis--possible role in vascular inflammation
Rheumatology (Oxford), 46 (9), 1422-7
DOI 10.1093/rheumatology/kem168, PubMed 17616549