A population-based study on serious inpatient bacterial infections in patients with chronic lymphocytic leukemia and their impact on survival.

Abstract:

OBJECTIVE:Infections in chronic lymphocytic leukemia (CLL) have been thoroughly investigated in the setting of clinical trials and single-center studies. However, large cohort studies on real-world data and studies on temporal trends are lacking. We performed a nationwide study on serious bacterial infections in CLL. METHODS:Using high-quality Swedish government-based registries, 13 009 CLL patients diagnosed in 1982-2013 and their 49 380 matched controls were included. RESULTS:Overall, CLL patients had an increased risk of serious inpatient bacterial infections with a hazard ratio (HR) 5.32 and 95% confidence interval (95% CI) 5.11-5.53, and the highest risk was observed for septicemia (HR 6.91, 95% CI 6.46-7.39) and lung infections (5.91, 5.64-6.18). The risk of serious inpatient bacterial infections decreased overtime with HR 0.87 (0.81-0.94) and HR 0.76 (0.70-0.82) in 1993-2002 and 2003-2013, respectively, compared to 1982-1992. CLL patients had an increased risk of death following a serious inpatient bacterial infection compared to matched CLL patients, and the risk was highest in the first 12 months after the infection (HR 5.48, 95% CI 5.11-5.90). CONCLUSION:We have, in this nationwide study, characterized the risk of serious bacterial infections in CLL patients and, importantly, depicted that the risk has decreased overtime.

journal_name

Eur J Haematol

authors

Steingrímsson V,Gíslason GK,Aspelund T,Turesson I,Björkholm M,Landgren O,Kristinsson SY

doi

10.1111/ejh.13477

subject

Has Abstract

pub_date

2020-11-01 00:00:00

pages

547-554

issue

5

eissn

0902-4441

issn

1600-0609

journal_volume

105

pub_type

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