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A Study on the Efficacy and Safety of Bevacizumab in Untreated Patients With Locally Advanced Cervical Cancer

2019-10-29 14:36:34 | BioPortfolio

Summary

To verify the clinical efficacy and safety of bevacizumab in treating local advanced cervical cancer, present study was designed to investigate the clinical results of bevacizumab combined with CCRT in local advanced cervical cancer

Description

Cervical cancer is the most common malignant tumor of the female productive system in developing countries and regions. Since five large-sample randomized controlled clinical trials have reported that concurrent chemoradiotherapy can improve the survival rate of patients with cervical cancer in the early 20th century, cisplatin-based concurrent chemoradiotherapy has become the standard treatment for locally advanced cervical cancer (LACC) . LACC has the characteristics of high invasiveness, high lymphatic metastasis and poor prognosis. The size and stage of the tumor are two independent prognostic factors. In 2008, a retrospective study published in JCO suggested that in II-IVA tumors, single-agent concurrent chemoradiotherapy did not improve disease-free survival (DFS) or overall survival (OS). Multiple studies reported poor prognosis in patients with primary tumors whose diameters were larger than 4 cm, 5 cm or 6 cm , and in 2016, Fokdal. et al. reported a low local control rate if the residual tumor volume was larger than 30 cc prior to afterloading brachytherapy . In the EMBRACE trial, Jastaniyah et al. divided tumors into five groups based on the difference between the tumor volume before treatment and prior to afterloading brachytherapy, and found that the dose coverage of the HR-CTV by D90 was low for patients with a large primary tumor volume and a poor treatment response [13]. Therefore, for patients with a large primary tumor volume, further studies are required to investigate whether accelerated tumor volume regression prior to afterloading brachytherapy is meaningful to escalating the local afterloading dose delivered to tumor and improving the local control rate and OS.

In recent years, with the rapid development of molecular biology, there have been multiple clinical trials regarding the molecular targeted drug therapy for tumor cell-specific targets . The angiogenesis inhibitor, bevacizumab, is the first molecular targeted drug for recurrent or advanced cervical cancer, which inhibits tumor angiogenesis by blocking the function of the vascular endothelial growth factor (VEGF). In a GOG phase II clinical trial, bevacizumab was applied to 46 patients with recurrent cervical cancer. The study reported a progression-free survival (PFS) of more than 6 months, with a median PFS and a median OS of 3.50 months and 7.29 months, respectively. Another GOG240 phase III clinical trial showed that chemotherapy combined with bevacizumab extended the OS of patients with recurrent and metastatic cervical cancer. United States' NCCN Clinical Practice Guidelines recommend the combined use of bevacizumab with paclitaxel + cisplatin for the first-line treatment of current and metastatic cervical cancer. However, there is a lack of evidence for the use of bevacizumab in the treatment of LACC.

The above background information raises the questions of: during the initial treatment of LACC, can the introduction of bevacizumab improve the patient's tumor regression rate and OS? And compared to concurrent chemoradiotherapy directly combined with bevacizumab, can neoadjuvant chemotherapy combined with bevacizumab + concurrent chemoradiotherapy further improve the therapeutic outcome? However, currently there is no research on these topics. In 2017, our research team reported poor prognosis in patients with LACC who had a high VEGFR expression . This result indicated that anti-angiogenic therapy could benefit patients with LACC. To investigate the clinical efficacy and safety of bevacizumab in treating local advanced cervical cancer, we design this clinical study

Study Design

Conditions

Disease Free Survival

Intervention

bevacizumab, DDP, Docetaxel, radiotherapy

Location

Department of Radiation Oncology, Xijing Hospital, Fourth Military Medical University
Xi'an
Shaanxi
China
710032

Status

Recruiting

Source

Fourth Military Medical University

Results (where available)

View Results

Links

Published on BioPortfolio: 2019-10-29T14:36:34-0400

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Medical and Biotech [MESH] Definitions

Period after successful treatment in which there is no appearance of the symptoms or effects of the disease.

Radiotherapy given to augment some other form of treatment such as surgery or chemotherapy. Adjuvant radiotherapy is commonly used in the therapy of cancer and can be administered before or after the primary treatment.

The total amount of radiation absorbed by tissues as a result of radiotherapy.

Persons who have experienced prolonged survival with or the following neoplastic disease and the impact of the disease on the individual, family members, and significant others.

Animals or humans raised in the absence of a particular disease-causing virus or other microorganism. Less frequently plants are cultivated pathogen-free.

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