Abstract
Background
This study evaluated the association between elevated C-reactive protein (CRP) and
clinical outcomes among adults treated with surgery for non-small cell lung cancer
(NSCLC) in the US.
Materials and Methods
Adults with NSCLC who underwent lung cancer surgery and had ≥1 CRP measurement prior
to, or >1 month following, index surgery were identified in the Optum Clinformatics
claims database. The association between elevated CRP (>10 mg/L) and risk of NSCLC
recurrence/death was assessed separately during the 6 months before surgery (pre surgery
cohort) and 2 years following surgery (post-surgery cohort) using multivariate regressions
and Kaplan-Meier analysis.
Results
After adjusting for baseline demographic and clinical characteristics among patients
in the pre surgery cohort with index surgery between 2016 to 2020 (n = 104), the incidence
rate ratio (IRR) for NSCLC recurrence between elevated vs. non-elevated CRP was 2.17
(95% confidence interval [CI]=1.03-4.60; P = .04). In the post surgery cohort (n = 264), the adjusted IRR for disease recurrence
(elevated vs. non-elevated CRP) was 2.22 (95% CI=1.05-4.70; P = .04). In the pre surgery cohort, the odds of death were nearly two-fold (odds ratio
[OR]=1.91; 95% CI=1.06-3.42; P = .03) among patients with elevated CRP. In the post surgery cohort, the OR was 1.62
(95% CI=0.88-2.97; P = .12). Among those with persistently elevated CRP prior to surgery, there was a significant
overall trend of increased CRP over the 5-year period.
Conclusion
These results support the association between elevated CRP and a higher risk of NSCLC
recurrence/death in pre- and postsurgery cohorts. This study may shed lights on inflammation-suppressing
treatments in patients with NSCLC.
Keywords
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Article info
Publication history
Published online: February 06, 2023
Accepted:
January 20,
2023
Received in revised form:
January 11,
2023
Received:
August 17,
2022
Publication stage
In Press Journal Pre-ProofIdentification
Copyright
© 2023 Published by Elsevier Inc.
