Cystic fibrosis related diabetes is not independently associated with increased Stenotrophomonas maltophilia infection: Longitudinal data from the UK CF Registry

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Abstract

Introduction

Stenotrophomonas maltophilia is common in the sputum of people with cystic fibrosis related diabetes (CFRD), raising the question as to whether this is a risk factor for its acquisition. We investigated this at a population level.

Methods

We analysed national Cystic Fibrosis Registry data 2011–2015 for 8047 people with CF > age 6 years, looking at demographics, diagnosis of CFRD, lung function and sputum microbiology; using descriptive and multivariate strategies to establish independent predictors for S. maltophilia culture and associated outcomes.

Results

S. maltophilia was present in 1148 (14.1%). Although univariate analysis confirmed it was more prevalent in those with CFRD, when adjusted for other clinical parameters there was no longer a relationship. Markers of more severe lung disease were independent risk-factors for S. maltophilia.

Conclusion

Although S. maltophilia is more common in people with CFRD, it is not an independent risk-factor for S. maltophilia acquisition.

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