A groundbreaking study published in BMC Cancer unveils a promising therapeutic advancement for elderly patients suffering from unresectable hepatocellular carcinoma (uHCC), a formidable liver cancer subtype with limited treatment options. Researchers have demonstrated that the combination of RALOX-HAIC—an acronym for hepatic arterial infusion chemotherapy using raltitrexed plus oxaliplatin—together with lenvatinib, a cutting-edge multi-targeted tyrosine kinase inhibitor, markedly elevates survival rates and enhances safety profiles compared to the conventional transarterial chemoembolization (TACE) method.
The incidence of hepatocellular carcinoma, particularly among individuals aged 70 and above, poses significant clinical challenges due to comorbidities and the reduced physiological resilience of this population. Standard therapeutic approaches, such as TACE, though widely used, often manifest considerable adverse effects with suboptimal long-term outcomes in elderly patients. Against this backdrop, the present retrospective analysis leverages clinical data from 82 elderly uHCC patients treated at Wuhan Union Hospital between 2019 and 2022, stratified into two cohorts receiving either HAIC combined with lenvatinib or TACE monotherapy.
Dissecting the molecular underpinnings of this combined regimen reveals a synergistic mechanism where raltitrexed, a thymidylate synthase inhibitor, and oxaliplatin, a platinum-based chemotherapeutic agent, deliver potent cytotoxicity directly to the hepatic tumor via arterial infusion. Concurrently, lenvatinib’s antiangiogenic properties disrupt tumor vasculature and inhibit key signaling pathways essential for tumor growth and proliferation, thereby augmenting the cytotoxic impact of HAIC.
Quantitative outcomes from the study underscore the superiority of the HAIC plus lenvatinib combination. The objective response rate (ORR), a critical measure of tumor shrinkage post-therapy, was significantly higher at 61.5% in the combination group versus 37.2% in patients undergoing TACE. Similarly, the disease control rate (DCR), encompassing both tumor response and stabilization, improved dramatically to 82.1% compared to 58.1% in the control group, suggesting enhanced disease management efficacy.
Crucially, survival metrics emphasize the real-world benefit of this novel therapeutic strategy. Median progression-free survival (mPFS)—the interval during which patients show no disease progression—was extended to 9.2 months for those receiving RALOX-HAIC plus lenvatinib, more than doubling the 4.6 months observed in the TACE cohort. Even more striking was the prolongation of overall survival (OS), with the experimental group achieving a median of 18.1 months compared to just 10.6 months in the TACE group, indicating a nearly 70% improvement.
Safety and tolerability analyses further delineate the clinical advantage of the combination regimen, revealing substantially fewer incidences of abdominal pain and fever relative to TACE-treated patients. While hand-foot syndrome, a recognized adverse effect associated with lenvatinib, was more frequent in the combination group (15.4% versus none in TACE), the severity did not escalate into critical toxicity, with grade 3 or 4 cases remaining rare and statistically insignificant.
The study’s retrospective design, though limiting causal inferences, provides robust real-world evidence supporting the integration of systemic targeted therapy with localized chemotherapy infusion for challenging hepatocellular carcinoma cases in an elderly demographic. Importantly, this combined approach opens avenues for tailored oncological care that balances efficacy with quality of life considerations for a vulnerable patient subset.
At a cellular level, the therapeutic approach exploits the hepatic artery’s favorable pharmacokinetics for delivering high-dose chemotherapeutic agents directly to tumor sites, reducing systemic exposure and minimizing collateral damage to healthy tissues. Raltitrexed’s action inhibits DNA synthesis, while oxaliplatin induces DNA cross-links, together crippling cancer cell replication. Lenvatinib’s inhibition of VEGFR, FGFR, and PDGFR pathways simultaneously halts angiogenesis, cutting off the tumor’s blood supply essential for its sustenance.
This multi-modal assault disrupts tumor microenvironment homeostasis, impeding progression and metastatic potential, which is paramount in advanced unresectable cases where surgical options are precluded. Moreover, the favorable safety profile observed indicates that elderly patients tolerate the combination well, an aspect crucial for adherence and sustained therapeutic success in geriatric oncology.
The implications of this study herald a paradigm shift in managing elderly patients with uHCC, traditionally a cohort fraught with therapeutic dilemmas due to frailty and comorbid disease burdens. By leveraging a carefully calibrated combination of local and systemic agents, clinicians can now envisage improved survival outcomes without compromising patient safety, thereby addressing a critical unmet need in hepatic oncology.
Furthermore, the findings suggest potential applicability beyond elderly populations, warranting exploration in younger cohorts and in diverse clinical settings. The interplay between HAIC-induced cytotoxicity and lenvatinib’s molecular targeting invites translational research to optimize dosing regimens, sequencing, and combination partners to enhance therapeutic indices.
In addition to efficacy and safety, patient-centric aspects such as treatment convenience, hospitalization time, and quality of life parameters merit future prospective studies. The retrospective data from the Wuhan Union Hospital cohort provide a compelling foundation upon which randomized controlled trials can be designed to validate these promising results.
This therapeutic strategy also aligns with precision medicine trends, where molecular profiling and tumor biology insights inform individualized treatment plans. As hepatocellular carcinoma often harbors heterogeneous genetic alterations, combinatorial regimens like RALOX-HAIC plus lenvatinib may prove effective in overcoming resistance mechanisms inherent in monotherapies.
Moreover, the integration of real-world clinical data underscores the importance of observational studies in generating actionable knowledge, particularly when rapid translation to practice is critical for patient outcomes. The comprehensive analysis of adverse events alongside survival data strengthens the clinical relevance of the findings.
In conclusion, the study pioneers a compelling therapeutic avenue that combines the local high-dose chemotherapy benefits of RALOX-HAIC with the systemic inhibitory effects of lenvatinib to substantially improve treatment responses and survival in elderly uHCC patients. This advancement marks a significant stride toward more effective, safer, and patient-tailored management of unresectable hepatocellular carcinoma, promising a beacon of hope for a patient population in dire need of optimized cancer care.
Subject of Research: Efficacy and safety of RALOX-HAIC combined with lenvatinib in elderly patients with unresectable hepatocellular carcinoma
Article Title: RALOX-HAIC (raltitrexed + oxaliplatin) combined with lenvatinib improves survival and safety in elderly patients with unresectable hepatocellular carcinoma
Article References:
Lu, H., Gao, Y., Xia, X. et al. RALOX-HAIC (raltitrexed + oxaliplatin) combined with lenvatinib improves survival and safety in elderly patients with unresectable hepatocellular carcinoma. BMC Cancer 25, 882 (2025). https://doi.org/10.1186/s12885-025-14274-x
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