Research
Print page Print page
Switch language
The Capital Region of Denmark - a part of Copenhagen University Hospital
Published

Elevated plasma YKL-40 and risk of infectious disease: a prospective study of 94665 individuals from the general population

Research output: Contribution to journalJournal articleResearchpeer-review

  1. The effect of migration on the incidence and mortality of bloodstream infection: a Danish register-based cohort study

    Research output: Contribution to journalJournal articleResearchpeer-review

  2. 2020 List of human papillomavirus assays Suitable for primary cervical cancer screening

    Research output: Contribution to journalReviewResearchpeer-review

  3. Repeated introduction and spread of the MRSA clone t304/ST6 in Northern Europe

    Research output: Contribution to journalJournal articleResearchpeer-review

  4. Invasive aspergillosis in patients with severe COVID-19 pneumonia

    Research output: Contribution to journalLetterResearchpeer-review

  1. Common variants in Alzheimer's disease and risk stratification by polygenic risk scores

    Research output: Contribution to journalJournal articleResearchpeer-review

  2. Mendelian randomisation study of smoking exposure in relation to breast cancer risk

    Research output: Contribution to journalJournal articleResearchpeer-review

  3. Germline variants and breast cancer survival in patients with distant metastases at primary breast cancer diagnosis

    Research output: Contribution to journalJournal articleResearchpeer-review

View graph of relations

Objectives: YKL-40 is an acute phase protein elevated in patients with infectious and inflammatory diseases. We tested the hypothesis that baseline elevated YKL-40 is associated with increased risk of future infectious disease in healthy individuals in the general population. Methods: We prospectively followed 94 665 individuals from the Danish general population for up to 23 years and analysed for plasma YKL-40 levels (n = 21 584) and CHI3L1 rs4950928 genotype (n = 94 184). Endpoints were any infection, bacterial pneumonia, urinary tract infection, skin infection, sepsis, diarrhoeal disease, and other infections. Results: For YKL-40 percentile category 91–100% versus 0–33%, the multifactorially and C-reactive protein (CRP) adjusted hazard ratios were 1.71 (95% confidence interval 1.50–1.96; p 4 × 10 −14) for any infection, 1.97 (1.64–2.37; p 4 × 10 −13) for bacterial pneumonia, 1.62 (1.24–2.11; p 0.002) for urinary tract infection, 1.74 (1.31–2.32; p 2 × 10 −4) for skin infection, 1.76 (1.25–2.46; p 0.004) for sepsis, 1.90 (1.29–2.78; p 0.002) for diarrhoeal disease and 2.71 (1.38–5.35; p 0.01) for other infections. In multifactorially and CRP-adjusted models, a twofold increase in YKL-40 was associated with increased risk of all infectious disease endpoints. Mendelian randomization did not support causality, as CHI3L1 rs4950928 was associated with 94% and 190% higher YKL-40 levels (for CG and CC versus GG genotype), but not with increased risk of any infectious disease endpoint. Discussion: Baseline elevated plasma YKL-40 was not a cause but a strong marker of increased risk of future infectious diseases in individuals in the general population.

Original languageEnglish
JournalClinical microbiology and infection : the official publication of the European Society of Clinical Microbiology and Infectious Diseases
Volume26
Issue number10
Pages (from-to)1411.e1-1411.e9
ISSN1198-743X
DOIs
Publication statusPublished - Oct 2020

    Research areas

  • CHI3L1, Genetic epidemiology, Infectious disease, Sepsis, YKL-40

ID: 59349082