Relationship between the systemic immune inflammation index and prostate cancer

Area of Science:

• Oncology
• Immunology
• Epidemiology

Background:

• The relationship between the systemic immune inflammatory index (SII) and prostate cancer risk is not well-established.
• Understanding this association is crucial for early detection and risk stratification of prostate cancer.

Purpose of the Study:

• To investigate the association between SII values and the risk of developing prostate cancer.
• To analyze how factors like age, ethnicity, and health status modify this association.

Main Methods:

• Analysis of data from 10,485 participants in the National Health and Nutrition Examination Survey (2011-2018).
• Utilized quartile-based grouping of SII values (Q1-Q4) and weighted logistic regression models.
• Employed restricted cubic splines and subgroup analyses based on demographic and clinical factors.

Main Results:

• Higher SII values demonstrated a positive association with increased prostate cancer risk.
• Participants in the highest quartile (Q4) had an odds ratio of 2.26 (95% CI: 1.44-3.55) compared to the lowest quartile (Q1).
• The positive association was more pronounced in non-Hispanic black participants and showed stability across sensitivity analyses.

Conclusions:

• Elevated SII levels are significantly associated with a higher risk of prostate cancer.
• Ethnic background, particularly being non-Hispanic black, influences this association.
• Further prospective research is needed to validate these findings and explore underlying mechanisms.