The association of systemic immune-inflammation index with incident breast cancer and all-cause mortality: evidence from a large population-based study
BackgroundChronic low-grade inflammation is recognized as a significant factor in various health outcomes, including the development and progression of breast cancer. The Systemic Immune-Inflammation Index (SII), a novel marker derived from routine blood counts, has been suggested as a predictor of...
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Frontiers Media S.A.
2025-01-01
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| Series: | Frontiers in Immunology |
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| Online Access: | https://www.frontiersin.org/articles/10.3389/fimmu.2025.1528690/full |
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| author | Yu Li Yu Li Meng Yu Ming Yang Jingqi Yang |
| author_facet | Yu Li Yu Li Meng Yu Ming Yang Jingqi Yang |
| author_sort | Yu Li |
| collection | DOAJ |
| description | BackgroundChronic low-grade inflammation is recognized as a significant factor in various health outcomes, including the development and progression of breast cancer. The Systemic Immune-Inflammation Index (SII), a novel marker derived from routine blood counts, has been suggested as a predictor of all-cause mortality and cardiovascular mortality. However, its predictive value in a nationwide representative population, particularly for breast cancer incidence and mortality, is not well-established.MethodsThis study aimed to assess the association of SII and the risk of breast cancer incidence and all-cause mortality in breast cancer patients within the National Health and Nutrition Examination Survey (NHANES) from 1999 to 2018. SII was calculated from complete blood count parameters. We used multifactor regression models to examine the associations between SII and the outcomes of interest.ResultsA total of 21,058 female participants were included in the study, of which 557 (2.7%) were identified as having breast cancer. After adjusting for multiple potential confounders, the relationship between SII and the incidence of breast cancer revealed an inverse L-shaped association. The optimal inflection point for SII/100 was determined to be 5.09. Below this threshold, there was a significant increase in the risk of breast cancer (OR=1.05, 95% CI: 1.02-1.09). Within the breast cancer population, SII exhibited a J-shaped relationship with all-cause mortality. The optimal inflection point for SII/100 in this context was 5.22, and above this threshold, there was a marked escalation in all-cause mortality (HR=1.09, 95% CI: 1.04-1.14).ConclusionThe SII, as a novel inflammatory composite index, is significantly associated with the risk of breast cancer incidence and all-cause mortality in breast cancer patients. These findings highlight the importance of monitoring systemic inflammation and suggest that SII could serve as a valuable prognostic tool. |
| format | Article |
| id | doaj-art-949da4ff6192416f81350c9c6767f2c1 |
| institution | Kabale University |
| issn | 1664-3224 |
| language | English |
| publishDate | 2025-01-01 |
| publisher | Frontiers Media S.A. |
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| series | Frontiers in Immunology |
| spelling | doaj-art-949da4ff6192416f81350c9c6767f2c12025-01-24T07:13:34ZengFrontiers Media S.A.Frontiers in Immunology1664-32242025-01-011610.3389/fimmu.2025.15286901528690The association of systemic immune-inflammation index with incident breast cancer and all-cause mortality: evidence from a large population-based studyYu Li0Yu Li1Meng Yu2Ming Yang3Jingqi Yang4Breast Surgery, Pingxiang People’s Hospital, Pingxiang, ChinaBreast Surgery, Luxi County People’s Hospital, Pingxiang, ChinaDepartment of Cardiovascular Medicine, Jiangxi Provincial People’s Hospital, The First Affiliated Hospital of Nanchang Medical College, Nanchang, ChinaDepartment of Cardiovascular Medicine, Jiangxi Provincial People’s Hospital, The First Affiliated Hospital of Nanchang Medical College, Nanchang, ChinaDepartment of Cardiovascular Medicine, Jiangxi Provincial People’s Hospital, The First Affiliated Hospital of Nanchang Medical College, Nanchang, ChinaBackgroundChronic low-grade inflammation is recognized as a significant factor in various health outcomes, including the development and progression of breast cancer. The Systemic Immune-Inflammation Index (SII), a novel marker derived from routine blood counts, has been suggested as a predictor of all-cause mortality and cardiovascular mortality. However, its predictive value in a nationwide representative population, particularly for breast cancer incidence and mortality, is not well-established.MethodsThis study aimed to assess the association of SII and the risk of breast cancer incidence and all-cause mortality in breast cancer patients within the National Health and Nutrition Examination Survey (NHANES) from 1999 to 2018. SII was calculated from complete blood count parameters. We used multifactor regression models to examine the associations between SII and the outcomes of interest.ResultsA total of 21,058 female participants were included in the study, of which 557 (2.7%) were identified as having breast cancer. After adjusting for multiple potential confounders, the relationship between SII and the incidence of breast cancer revealed an inverse L-shaped association. The optimal inflection point for SII/100 was determined to be 5.09. Below this threshold, there was a significant increase in the risk of breast cancer (OR=1.05, 95% CI: 1.02-1.09). Within the breast cancer population, SII exhibited a J-shaped relationship with all-cause mortality. The optimal inflection point for SII/100 in this context was 5.22, and above this threshold, there was a marked escalation in all-cause mortality (HR=1.09, 95% CI: 1.04-1.14).ConclusionThe SII, as a novel inflammatory composite index, is significantly associated with the risk of breast cancer incidence and all-cause mortality in breast cancer patients. These findings highlight the importance of monitoring systemic inflammation and suggest that SII could serve as a valuable prognostic tool.https://www.frontiersin.org/articles/10.3389/fimmu.2025.1528690/fullsystemic immune-inflammation indexbreast cancerall-cause mortalitynonlinear relationshipnhaens |
| spellingShingle | Yu Li Yu Li Meng Yu Ming Yang Jingqi Yang The association of systemic immune-inflammation index with incident breast cancer and all-cause mortality: evidence from a large population-based study Frontiers in Immunology systemic immune-inflammation index breast cancer all-cause mortality nonlinear relationship nhaens |
| title | The association of systemic immune-inflammation index with incident breast cancer and all-cause mortality: evidence from a large population-based study |
| title_full | The association of systemic immune-inflammation index with incident breast cancer and all-cause mortality: evidence from a large population-based study |
| title_fullStr | The association of systemic immune-inflammation index with incident breast cancer and all-cause mortality: evidence from a large population-based study |
| title_full_unstemmed | The association of systemic immune-inflammation index with incident breast cancer and all-cause mortality: evidence from a large population-based study |
| title_short | The association of systemic immune-inflammation index with incident breast cancer and all-cause mortality: evidence from a large population-based study |
| title_sort | association of systemic immune inflammation index with incident breast cancer and all cause mortality evidence from a large population based study |
| topic | systemic immune-inflammation index breast cancer all-cause mortality nonlinear relationship nhaens |
| url | https://www.frontiersin.org/articles/10.3389/fimmu.2025.1528690/full |
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