Translational Health Reports

Abstract Backgrounds: Early-stage laryngeal squamous cell carcinoma (LSCC), which includes stage I and II disease, has a high cure rate. The main treatment approaches are definitive radiotherapy (RT) and transoral surgery (TOS), which includes transoral laser microsurgery (TLM) and transoral robotic surgery (TORS). Selecting the optimal treatment involves balancing oncologic effectiveness with functional results and quality of life.
Objective: To review and compare current evidence on overall survival (OS), disease-specific survival (DSS), laryngeal preservation (LP), and functional outcomes in early-stage LSCC treated with primary RT or TOS.
Methods: A narrative literature review was performed, identifying relevant studies from PubMed and Scopus. The focus was on peer-reviewed articles from the last two decades, including retrospective cohort studies, prospective trials, systematic reviews, and meta-analyses that directly compared RT and TOS.
Results: Recent large-scale analyses and meta-analyses show similar overall and disease-specific survival rates for T1 and T2 tumors treated with modern TOS or RT. The main differences are seen in patterns of oncologic control. TOS is linked to lower local recurrence but a higher incidence of second primary tumors, whereas RT shows higher local recurrence but a lower need for salvage laryngectomy, resulting in comparable long-term laryngeal preservation rates. Functionally, TOS offers advantages in treatment duration, voice outcomes for select T1a lesions, and cost-effectiveness, but may lead to poorer swallowing outcomes for larger resections. RT may provide better voice quality for more extensive T1 and T2 lesions but carries risks of long-term dry mouth and tissue scarring.
Conclusion: Both RT and TOS are effective treatments for early-stage LSCC, with similar long-term survival outcomes. Treatment selection should be individualized, based on tumor characteristics, patient health, institutional experience, and patient preferences regarding functional trade-offs and treatment burden.

Abstract Background: Chemoradiation therapy (CRT) is fundamental for treating locally advanced and high-risk breast cancer. Although effective, it significantly impacts systemic physiology, which can be tracked through fluctuations in serum biomarkers. This review consolidates existing research on how CRT affects circulating tumor cells (CTCs), circulating tumor DNA (ctDNA), inflammatory cytokines, and tissue injury markers, assessing their value for predicting outcomes and guiding treatment.
Methods: A systematic search of PubMed, Embase, Scopus, and Web of Science was conducted for studies to 2025. Keywords included "breast cancer," "chemoradiation," "serum biomarker," "ctDNA," "CTC," and related terms. Eligible studies reported serum biomarker levels in breast cancer patients before, during, or after CRT and linked them to clinical results.
Results: Analysis of studies indicates that CRT causes a predictable but individualized alteration in serum biomarkers. A swift decrease in CTCs and ctDNA levels during neoadjuvant or definitive CRT strongly correlates with pathological complete response (pCR) and better survival. In contrast, detectable ctDNA after treatment is a powerful indicator of minimal residual disease (MRD) and impending relapse. Inflammatory markers such as IL-6 and CRP generally increase during therapy; prolonged elevation is linked to poorer prognosis and greater toxicity. Additionally, biomarkers like high-sensitivity Troponin I and TGF-β1 enable early identification of subclinical cardiotoxicity and radiation-induced skin damage, respectively.
Conclusion: Serum biomarkers offer a real-time, dynamic reflection of tumor response and host toxicity during CRT. Incorporating liquid biopsy components (CTCs, ctDNA) and host-response markers into clinical practice shows great potential for personalizing treatment, facilitating early intervention, and enhancing long-term results. Prospective studies are urgently required to standardize testing methods and confirm their clinical utility in guiding treatment strategies.