Long-term Clinical Results of Concurrent Chemoradiotherapy for Patients with Cervical Esophageal Squamous Cell Carcinoma

Long-term results of induction chemotherapy for non-operable esophageal squamous cell carcinoma followed by concurrent chemoradiotherapy: a single-centre experience

BACKGROUND

This study aimed to investigate the long-term clinical outcomes and toxicities of induction chemotherapy (IC) followed by concurrent chemoradiotherapy (CCRT) vs. CCRT alone in patients with non-operable esophageal squamous cell carcinoma (ESCC).

PATIENTS AND METHODS

Between 2008 and 2022, 271 ESCC patients who received definitive CCRT based on intensity modulated radiation therapy (IMRT)/volumetric modulated arc therapy (VMAT) were enrolled. Through a propensity score-matched (PSM) method, 71 patients receiving IC and CCRT were matched 1:1 to patients who received CCRT alone. The Kaplan-Meier method and Cox proportional hazards model were applied to analyze survival and prognosis.

RESULTS

The IC + CCRT group had no improvement in 5-year overall survival (OS) rate, recurrence-free survival (RFS) rate, and distant metastasis-free survival (DMFS) rate (all p > 0.05) compared with the CCRT group. The 5-year OS rate (65.6% vs. 17.6% vs. 29.3%, p < 0.001), RFS rate (65.6% vs. 17.6% vs. 26.9%, p < 0.001), and DMFS rate (62.5% vs. 10.3% vs. 27.2%, p < 0.001) of the IC good responders were significantly higher than that of the IC poor responders and CCRT group. Multivariate analysis revealed that total radiotherapy time (≥ 49 days) and stage III/IV were independent predictive factors of OS, RFS, and DMFS. No significant differences were observed in the rates of grade 3-4 toxicities between both groups.

CONCLUSIONS

Our results showed the addition of IC to CCRT was not superior to CCRT in unselected ESCC patients, while IC responders could benefit from this regime without an increase in toxicities.

Construction of survival prediction model for elderly esophageal cancer

Background

The purpose of this study was to analyze the clinical characteristics and prognosis of EPEC and to construct a prediction model based on the SEER database.

Methods

All EPECs from the SEER database were retrospectively analyzed. A comprehensive and practical nomogram that predicts the overall survival (OS) of EPEC was constructed. Univariate and multivariate Cox regression analysis was performed to explore the clinical factors influencing the prognosis of EPEC, and finally, the 1 -, 3 - and 5-year OS were predicted by establishing the nomogram. The discriminant and predictive ability of the nomogram was evaluated by consistency index (C-index), calibration plot, area under the curve (AUC), and receiver operating characteristic (ROC) curve. Decision curve analysis (DCA) was used to evaluate the clinical value of the nomogram.

Results

A total of 3478 patients diagnosed with EPEC were extracted from the SEER database, and the data were randomly divided into the training group (n=2436) and the validation group (n=1402). T stage, N stage, M stage, surgery, chemotherapy, radiotherapy, age, grade, and tumor size were independent risk factors for 1 -, 3 - and 5-year OS of EPEC (P< 0.05), and these factors were used to construct the nomogram prediction mode. The C-index of the validation and training cohorts was 0.718 and 0.739, respectively, which were higher than those of the TNM stage system. The AUC values of the nomogram used to predict 1-, 2-, and 3-year OS were 0.751, 0.744, and 0.786 in the validation cohorts (0.761, 0.777, 0.787 in the training cohorts), respectively. The calibration curve of 1-, 2-, and 3-year OS showed that the prediction of the nomogram was in good agreement with the actual observation. The nomogram exhibited higher clinical utility after evaluation with the 1-, 2-, and 3-year DCA compared with the AJCC stage system.

Conclusions

This study shows that the nomogram prediction model for EPEC based on the SEER database has high accuracy and its prediction performance is significantly better than the TNM staging system, which can accurately and individually predict the OS of patients and help clinicians to formulate more accurate and personalized treatment plans.

Optimal radiotherapy dose in cervical esophageal squamous cell carcinoma patients treated with definitive concurrent chemoradiotherapy: A population based study

BACKGROUND

The optimal radiotherapy dose for locally advanced cervical esophageal squamous cell carcinoma (C-ESqCC) treated with definitive concurrent chemoradiotherapy (dCCRT) is unclear. Here, we aimed to compare the survival of those treated with high dose versus standard dose via a population based approach.

METHODS

Eligible C-ESqCC patients diagnosed between 2011 and 2017 were identified via the Taiwan Cancer Registry. We used propensity score (PS) weighting to balance observable potential confounders between groups. The hazard ratio (HR) of death and incidence of esophageal cancer mortality (IECM) were compared between high (60-70 Gy) and standard dose (50-50.4 Gy). We also evaluated the outcome in supplementary analyses via alternative approaches.

RESULTS

Our primary analysis consisted of 141 patients in whom covariates were well balanced after PS weighting. The HR of death when high dose was compared with standard dose was 0.65 (95% confidence interval [CI]: 0.4-1.03, p = 0.07). The HR of IECM was 0.74 (p = 0.45). The HR of OS remained similarly insignificant in supplementary analyses.

CONCLUSIONS

We observed a trend in favor of high radiotherapy dose versus standard dose for C-ESqCC treated with dCCRT in this population-based nonrandomized study. Further studies are needed to confirm the findings of the study.

Clinical results of intensity-modulated radiotherapy for 250 patients with cervical and upper thoracic esophageal carcinoma

Purpose

To evaluate and analyze the efficacy and prognostic factors of intensity-modulated radiotherapy in 250 patients with cervical and upper esophageal carcinoma.

Patients and methods

From September 2009 to September 2016, we retrospectively analyzed 250 patients with cervical and upper esophageal carcinoma treated with intensity-modulated radiotherapy (IMRT). In our study, all patients received IMRT, 54 patients with cervical esophageal carcinoma and 196 patients with upper esophageal carcinoma. Treatment response, survival status and failure modes of treatment were observed, and prognostic factors were analyzed.

Results

The median survival time was 22.60 months and 3-year survival rate was 42%. The median progress-free survival time was 14.52 months and 3-year progress-free survival rate was 29.3%. The median survival time and the median progress-free survival time for cervical esophageal carcinoma were 20.40 and 15.15 months, respectively. The median survival time and the median progress-free survival time for upper esophageal carcinoma were 25.80 and 14.52 months, respectively (P>0.05). The significant clinical factors associated with survival were patient age, radiotherapy dose and T stages (P<0.05). Radiotherapy dose and concurrent chemoradiotherapy were the significant clinical factors related to progression-free survival (P<0.05). Recurrence appeared in 55.2% patients, including local recurrence in 22.40%, region relapse in 10.40% and distant metastasis in 12.40%. Local recurrence was the main mode of treatment failure. During treatment, the main treatment-related acute toxicity was leukocytopenia and anemia.

Conclusion

In this study, IMRT demonstrated clinical benefit and well-tolerated toxicity in patients with cervical and upper esophageal carcinoma.

Definitive chemoradiotherapy with docetaxel, cisplatin, and 5-fluorouracil (DCF-R) for advanced cervical esophageal cancer

BACKGROUND

Recently, definitive chemoradiotherapy (dCRT) has become one of the essential treatment strategies for esophageal squamous cell carcinoma (ESCC) and has been especially gaining prevalence for cervical ESCC to preserve the larynx. Our department recently introduced dCRT concomitant with docetaxel, cisplatin, and 5-fluorouracil (DCF-R) for treating advanced cervical ESCC. This study aims to assess the safety and outcomes of DCF-R in patients with advanced cervical ESCC.

METHODS

We retrospectively assessed 11 patients with advanced cervical ESCC (clinical stage: II-IV, including T4b and/or M1 lymph node) who received DCF-R as the first-line treatment between December 2010 and February 2015.

RESULTS

Our patient cohort comprised 8 males and 3 females (median age 68 years; range 54-76 years). The pretreatment clinical stage included stage II (1), stage III (7), and stage IV (3) cases [including 3 patients with T4b (2 trachea and 1 thyroid) and 3 patients with M1 lymph node]. We attained complete response (CR) in 10 patients and stable disease in 1 patient. Of 10 patients with CR, 5 experienced recurrence and 5 continued exhibiting CR. Furthermore, grade 3 or more adverse events included leucopenia (91%), neutropenia (91%), febrile neutropenia (45%), and pharyngeal pain (55%). While the 2-year overall survival rate was 72%, the 2-year recurrent-free survival rate was 64%, respectively.

CONCLUSIONS

DCF-R treatment for advanced cervical esophageal cancer could be completed by the careful administration; although a strong blood toxicity might occur, this treatment may provide the chance to obtain favorable prognosis with larynx preservation.