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Higher SIRI linked to poorer survival in glioma, pooled HR 1.79 for overall survivalInflammation levels linked to survival outcomes in glioma patients

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Key Takeaway
Consider SIRI as a potential prognostic marker in glioma, but note population-specific variability and publication bias.

This meta-analysis pooled data from studies including 1778 glioma patients to evaluate the systemic inflammation response index (SIRI) as a prognostic marker. The analysis found that higher SIRI was significantly associated with poorer overall survival (pooled HR = 1.79, 95% CI: 1.34-2.38, P < 0.0001) and poorer progression-free survival (pooled HR = 1.46, 95% CI: 1.18-1.81, P = 0.0005). These associations suggest that SIRI, a marker of systemic inflammation, may have prognostic value in glioma.

The authors note several limitations. Publication bias was detected in the overall survival analysis (P = 0.0001). Additionally, the prognostic value of SIRI for overall survival was not significant in the European population subgroup, indicating potential population-specific differences. The study did not report follow-up duration or adverse events, as it is a meta-analysis of observational associations.

The findings highlight the need for further validation with standardized cut-off values in diverse populations. The association is not necessarily causal, and the clinical utility of SIRI as a routine prognostic tool remains to be established. Clinicians should interpret these results cautiously, recognizing the heterogeneity and potential bias in the included studies.

How this fits prior evidence

This meta-analysis extends prior coverage of prognostic biomarkers in glioma, such as the finding that lower SLC25A28 expression is linked to shorter survival (pooled HR 1.91). Both SIRI and SLC25A28 are presented as candidate prognostic markers, but their clinical utility remains unproven. The current analysis also aligns with the broader theme of inflammation and immune-related markers in cancer, as seen with periostin and RPN1, though SIRI specifically reflects systemic inflammation. The non-significant association in the European subgroup contrasts with the overall pooled result, underscoring the need for population-specific validation.

When doctors look for ways to predict how a disease will progress, they often look at the body's internal signals. A new look at data from 1,778 glioma patients shows that a specific marker of inflammation, called the SIRI, can tell a story about the patient's journey.

Patients with a higher SIRI score were found to have significantly worse overall survival and shorter progression-free survival. This means that higher levels of this inflammatory response were linked to a faster progression of the disease.

While these results are clear for the group as a whole, the data is not perfectly uniform. For example, the link between the SIRI score and survival was not significant in the European subgroup of patients. Because of this, experts say more research is needed to find standard ways to use these measurements across different types of people.

What this means for you:
Higher inflammation scores are linked to shorter survival and faster disease progression in glioma patients.

Common questions

What does a high inflammation score mean for glioma patients?

A higher systemic inflammation response index (SIRI) is linked to poorer overall survival and shorter progression-free survival. This means that patients with higher scores in this specific inflammatory marker were found to have worse outcomes in the study of 1,778 patients.

Is this finding consistent for all patients?

The results were not consistent for everyone. While the overall study showed a clear link between high inflammation and worse outcomes, the link was not significant specifically within the European population subgroup. More research is needed to find standard values for different groups.

Study Details

Study typeMeta analysis
EvidenceLevel 1
PublishedJan 2026
View Original Abstract ↓
OBJECTIVE: To systematically evaluate the predictive value of systemic inflammation response index (SIRI) for the prognosis of glioma patients. METHODS: PubMed, Cochrane Library, EMBASE, and Web of Science databases were searched to collect literature on the relationship between SIRI and glioma prognosis from database inception to July 2026. The primary outcome measures were overall survival (OS) and progression-free survival (PFS). STATA 15.0 and Review Manager 5.4 software were used, and random-effects models were employed with pooled hazard ratios (HR) and their 95% confidence intervals (CI) to assess the prognostic value of SIRI. Subgroup analyses, sensitivity analyses, and publication bias assessments were performed. RESULTS: Eight retrospective cohort studies involving 1778 glioma patients were included, forming 12 comparison groups for OS analysis and 4 comparison groups for PFS analysis. Meta-analysis results showed that a higher SIRI was significantly associated with poorer OS (pooled HR = 1.79, 95% CI: 1.34-2.38, P < 0.0001) and PFS (pooled HR = 1.46, 95% CI: 1.18-1.81, P = 0.0005) in glioma patients. Subgroup analysis showed that the prognostic value of SIRI for OS was not significant in the European population subgroup, suggesting that the association may be modulated by geographic region. Sensitivity analysis confirmed the robustness of the results. Egger's test indicated publication bias in the OS analysis (P = 0.0001), but no significant bias was found in the PFS analysis. CONCLUSION: This meta-analysis suggests that elevated SIRI is associated with poorer OS and PFS in glioma patients, although this association was not consistently observed across all subgroups, particularly in European populations. These findings highlight the need for further validation with standardized cut-off values in diverse populations.
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