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First-line immune checkpoint inhibitors plus anti-angiogenic therapy improve progression-free survival and response rates in advanced RCCCombination Therapy Shows Better Outcomes for Advanced Renal Cell Carcinoma

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Key Takeaway
Consider TKI-based ICI combinations over sunitinib for intermediate and poor-risk advanced RCC patients.

This meta-analysis evaluated the efficacy and safety of first-line immune checkpoint inhibitors (ICIs) combined with anti-angiogenic therapy compared to sunitinib in 4,977 patients with advanced or metastatic renal cell carcinoma (RCC). The analysis found significant improvements in progression-free survival (PFS), with an effect size of 0.63 (0.54-0.72, P < 0.001) and a significant increase in objective response rate (ORR) of 3.07 (2.01-4.67, P < 0.001). Disease control rate (DCR) also showed significant improvement with an effect size of 2.04 (1.49-2.78, P < 0.001).

Overall survival (OS) showed significant improvement overall (0.77-0.89, P < 0.001). However, these gains were most marked in poor-risk (HR = 0.52) and intermediate-risk (HR = 0.88) patients; no significant gain was observed in favorable-risk patients (0.97, [0.79-1.18]). The study noted that the specific anti-angiogenic agent class is a primary determinant of efficacy and tolerability.

Safety profiles varied by drug class. While there were no significant differences in grade 3 or higher treatment-related adverse events, TKI-based regimens had the highest toxicity. VEGFR-selective TKIs showed a balanced profile, whereas anti-VEGF monoclonal antibody-based combinations failed to show significant OS or ORR advantages over sunitinib. Clinicians should note that while these combinations are superior to sunitinib for many patients, they carry an increased risk of treatment discontinuation.

How this fits prior evidence

This meta-analysis confirms the superiority of TKI-based ICI combination therapy over sunitinib as a first-line treatment for advanced RCC, particularly in intermediate- and poor-risk populations. It addresses clinical management by identifying the anti-angiogenic agent class as the primary determinant of efficacy and tolerability. While it does not directly relate to the cardiovascular risks of TKIs or the specific outcomes of FH-deficient renal cell carcinoma mentioned in prior coverage, it provides a broader evidence base for first-line systemic therapies in advanced RCC.

Researchers analyzed data from nearly 5,000 patients with advanced or metastatic renal cell carcinoma (RCC). They compared a first-line treatment combining immune checkpoint inhibitors with anti-angiogenic therapy against the standard drug sunitinib. The study found that this combination significantly improved progression-free survival and overall survival for many patients.

The results were particularly strong for patients identified as having intermediate or poor risk of disease progression. While both treatments showed improvements in response rates, certain types of drugs within the anti-angiogenic category performed better than others. Specifically, tyrosine kinase inhibitors (TKIs) showed a balanced profile between effectiveness and safety compared to other options.

Patients on the combination therapy experienced fewer issues with fatigue and blood-related side effects. However, some patients faced risks like high blood pressure or liver issues. Because this is a meta-analysis of existing trials, it provides a broad look at current trends but does not replace individual medical advice. Patients should talk to their doctors about which specific drug combination fits their unique health profile.

What this means for you:
Combination therapy shows better survival rates for high-risk kidney cancer patients than sunitinib alone.

Common questions

How does this combination compare to sunitinib?

The study found that the combination of immune checkpoint inhibitors and anti-angiogenic therapy provided significant improvements in progression-free survival and overall survival compared to sunitinib. This was especially noticeable for patients with intermediate or poor risk profiles.

What are the side effects of this new treatment?

Patients on the combination therapy had fewer issues with fatigue and blood-related toxicities than those on other treatments. However, some risks included high blood pressure, liver issues (hepatotoxicity), and protein in the urine.

Does this treatment work for everyone with kidney cancer?

The results were most significant for patients with intermediate-risk and poor-risk profiles. The study noted that some specific types of anti-angiogenic drugs did not show a significant advantage over sunitinib in terms of survival or response rates.

Study Details

Study typeMeta analysis
EvidenceLevel 1
PublishedJul 2026
View Original Abstract ↓
BackgroundThe meta-analysis assesses the efficacy and safety of first-line immune checkpoint inhibitors (ICIs) plus anti-angiogenic therapies versus sunitinib in advanced or metastatic renal cell carcinoma (RCC). The analysis places focus on differential benefits across International Metastatic RCC Database Consortium (IMDC) risk subgroups, ICI classes, and anti-angiogenic drug classes.MethodsWe systematically searched the Cochrane Library, Embase and PubMed for randomized controlled trials (RCTs) comparing ICI plus anti-angiogenic therapy with sunitinib as first-line treatment for advanced RCC. Efficacy measures included progression-free survival (PFS) and overall survival (OS), objective response rate (ORR), disease control rate (DCR). Safety measures assessed grade ≥3 treatment-related adverse events (TRAEs) and TRAEs leading to discontinuation.ResultsSeven RCTs involving 4,977 patients were included. Combination therapy was associated with significant improvements in PFS (0.63, [0.54–0.72]), OS (0.83, [0.77–0.89]), ORR (3.07, [2.01–4.67]), and DCR (2.04, [1.49–2.78]) (all P < 0.001). OS benefits were most marked in poor-risk (HR = 0.52) and intermediate-risk (HR = 0.88) patients, while favorable-risk patients showed no significant OS gain (0.97, [0.79–1.18]). Multi-targeted tyrosine kinase inhibitor (TKI)-based regimens provided the greatest PFS and ORR benefits but the highest toxicity, while vascular endothelial growth factor receptor (VEGFR)-selective TKIs showed a balanced efficacy-safety profile. Anti-VEGF monoclonal antibody-based combinations failed to demonstrate significant OS or ORR advantages over sunitinib. Safety analysis showed no significant difference in grade ≥3 TRAEs (1.22, [0.94–1.58]), but did reveal a significantly increased risk of treatment discontinuation (3.34, [2.77–4.03]). Additionally, elevated risks of hepatotoxicity, hypertension, and proteinuria were observed, whereas hematologic toxicities and fatigue were significantly reduced versus sunitinib.ConclusionTKI-based ICI combination therapy is superior to sunitinib as first-line treatment for advanced RCC, particularly in intermediate- and poor-risk patients. Anti-angiogenic agent class is the primary determinant of efficacy and tolerability, while ICI class does not influence regimen selection. These findings support a risk-adapted, class-informed approach to optimize therapeutic outcomes in clinical practice.Systematic Review registrationIdentifier CRD420251273931.
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