Impact of immunosuppressive agents on clinical manifestations and outcome of staphylococcus aureus bloodstream infection: a propensity score-matched analysis in 2 large, prospectively evaluated cohorts

Camp, Johannes, Glaubitz, Lina, Filla, Tim, Kaasch, Achim J, Fuchs, Frieder, Scarborough, Matt, Kim, Hong Bin, Tilley, Robert, Liao, Chun-Hsing, Edgeworth, Jonathan, Nsutebu, Emmanuel, López-Cortés, Luis Eduardo, Morata, Laura, Llewelyn, Martin and others, (2021) Impact of immunosuppressive agents on clinical manifestations and outcome of staphylococcus aureus bloodstream infection: a propensity score-matched analysis in 2 large, prospectively evaluated cohorts. Clinical infectious diseases : an official publication of the Infectious Diseases Society of America, 73 (7). pp. 1239-1247. ISSN 1058-4838

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Abstract

BACKGROUND: Staphylococcus aureus bloodstream infection (SAB) is a common, life-threatening infection. The impact of immunosuppressive agents on the outcome of patients with SAB is incompletely understood.

METHODS: Data from 2 large prospective, international, multicenter cohort studies (Invasive Staphylococcus aureus Infections Cohort [INSTINCT] and International Staphylococcus aureus Collaboration [ISAC]) between 2006 and 2015 were analyzed. Patients receiving immunosuppressive agents were identified and a 1:1 propensity score-matched analysis was performed to adjust for baseline characteristics of patients. Overall survival and time to SAB-related late complications (SAB relapse, infective endocarditis, osteomyelitis, or other deep-seated manifestations) were analyzed by Cox regression and competing risk analyses, respectively. This approach was then repeated for specific immunosuppressive agents (corticosteroid monotherapy and immunosuppressive agents other than steroids [IMOTS]).

RESULTS: Of 3188 analyzed patients, 309 were receiving immunosuppressive treatment according to our definitions and were matched to 309 nonimmunosuppressed patients. After propensity score matching, baseline characteristics were well balanced. In the Cox regression analysis, we observed no significant difference in survival between the 2 groups (death during follow-up: 105/309 [33.9%] immunosuppressed vs 94/309 [30.4%] nonimmunosuppressed; hazard ratio [HR], 1.20 [95% confidence interval {CI}, .84-1.71]). Competing risk analysis showed a cause-specific HR of 1.81 (95% CI, .85-3.87) for SAB-related late complications in patients receiving immunosuppressive agents. The cause-specific HR was higher in patients taking IMOTS (3.69 [95% CI, 1.41-9.68]).

CONCLUSIONS: Immunosuppressive agents were not associated with an overall higher mortality. The risk for SAB-related late complications in patients receiving specific immunosuppressive agents such as IMOTS warrants further investigations.

Item Type: Article
Keywords: bacteremia, complications, corticosteroids, dissemination, immunosuppression, Anti-Bacterial Agents;Bacteremia;Humans;Immunosuppressive Agents;Propensity Score;Prospective Studies;Staphylococcal Infections;Staphylococcus aureus
Schools and Departments: Brighton and Sussex Medical School > Global Health and Infection
SWORD Depositor: Mx Elements Account
Depositing User: Mx Elements Account
Date Deposited: 24 Jun 2022 12:58
Last Modified: 24 Jun 2022 13:00
URI: http://sro.sussex.ac.uk/id/eprint/106608

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