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Validation of Implementation of Cervical Dysplasia Treatment Modalities in HIV-Seropositive Women (VICAR2)

2014年9月19日 更新者：Cynthia S Firnhaber、University of Witwatersrand, South Africa

To compare the efficacy of cryotherapy and large loop excision of the transformation zone (LLETZ) procedures for the treatment of high-grade cervical intra-epithelial neoplasia (CIN2/3) among HIV-seropositive women by follow-up VIA, cytology and Human Papillomavirus.

Hypothesis: LEEP will be more effective than cryotherapy in removing CIN 2/3 lesions in HIV positive women in South Africa

研究概览

地位

完全的

条件

干预/治疗

详细说明

Cervical cancer is the most common cancer in HIV positive women. This is due to immunosuppression and lack of organized and effective screening and treatment programs in Africa. Other screening and treatment modalities need to be evaluated in resource limited countries as there is not capacity in most of these countries to implement a cytology/histology based program. The treatment modality of cryotherapy is easy to train and perform and can be done by a nurse. LEEP requires significant training usually doctors and skills in administering local anaesthetic. This study compares the two modalities of cryotherapy vs LEEP in a randomized controlled study in HIV positive women in South Africa.

A. PRIMARY AIMS (S.A.):

  1. To compare the efficacy of cryotherapy and large loop excision of the transformation zone (LLETZ) procedures for the treatment of high-grade cervical intra-epithelial neoplasia (CIN2/3) among HIV-seropositive women by follow-up VIA, cytology and HPV.
  2. To determine the utility of subsequent HPV DNA testing as a marker of effective treatment following the treatment of CIN 2/3 among HIV-seropositive women.
  3. To compare the safety of cryotherapy versus LLETZ in HIV seropositive women.

SECONDARY AIMS:

1. To describe HIV disease status (CD4, HIV viral load), demographics, and sexual behavior in each treatment arm (LLETZ and cryotherapy) in HIV seropositive women.

3. To determine the cervical disease recurrence rates with cryotherapy and LLETZ.

4. To evaluate the relationship between HIV status, demographics, HPV, and sexual behavior with the clearance of cervical disease at the ectocervical and endocervical margins in HIV seropositive women.

研究类型

介入性

注册 (实际的)

166

阶段

  • 不适用

联系人和位置

本节提供了进行研究的人员的详细联系信息，以及有关进行该研究的地点的信息。

学习地点

  • 南非
    • Gauteng
      • Johannesburg、Gauteng、南非、2092
        • Helen Joseph Hospital

参与标准

研究人员寻找符合特定描述的人，称为资格标准。这些标准的一些例子是一个人的一般健康状况或先前的治疗。

资格标准

适合学习的年龄

18年 至 65年 (成人、年长者)

接受健康志愿者

不

有资格学习的性别

女性

描述

Inclusion Criteria:

  • Women 18-65 years of age
  • Not menstruating (if menstruating, the patient can be screened at another date)
  • Able to sign consent
  • Able to follow the study protocol
  • HIV positive (by two different criteria; either 2 different rapid HPV tests of different manufacturers, a HIV viral load ≥5,000,ELISA, Western blot documented in VICAR 1)
  • Participant with histology-proven CIN 2 or 3 disease

Exclusion Criteria:

  • Pregnant
  • Clinically active sexually transmitted disease determined by clinical history and/or physical exam (may participate after adequate treatment by syndromic treatment management)
  • Known and previous treatment for high grade squamouse intraepithelial lesion by any method (cryotherapy, LLETZ or cone biopsy)
  • Previous hysterectomy with removal of the cervix
  • Significant medical illness/mental illness that the investigator feels would prevent the participant from complying with the protocol or place the participant at medical risk

  • Cervical dysplastic lesions that are not appropriate for cryotherapy, defined as the following:

    1. Lesion is greater than ≥75% cervix
    2. Lesion entering into the cervical canal and the complete lesion cannot be visualized
    3. Presence of abnormal vasculature
    4. Lesion bigger that the cryotherapy probe

学习计划

本节提供研究计划的详细信息，包括研究的设计方式和研究的衡量标准。

研究是如何设计的？

设计细节

  • 主要用途：治疗
  • 分配：随机化
  • 介入模型：并行分配
  • 屏蔽：无（打开标签）

武器和干预

参与者组/臂
干预/治疗
有源比较器：Arm B
LEEP treatment of CIN 2/3 cervical lesion in HIV positive women (standard of Care)
程序：LEEP
The cervix is anaesthetized with lidocaine and then a electric loop is applied to the cervical lesion which is cut with one pass. The LEEP machine used is the automatic Finesse Machine.
其他名称：
  • Loop Electric Excision Procedure
实验性的：Arm A
Cryotherapy treatment of CIN 2/3 cervical lesions
程序：Cryotherapy
This is involves freezing the lesions with a cryo gun using Nitrous Oxide for 3 minutes-- wait 5 minutes and then refreezing for 3 more minutes. This procedure uses the Wallach cryogun
其他名称：
  • This is a study using Freezing with a cryogun

研究衡量的是什么？

主要结果指标

结果测量
措施说明
大体时间
Compare efficacy of cryotherapy and LEEP
大体时间：1 year
To compare the efficacy of cryotherapy and large loop excision of the transformation zone (LLETZ) procedures for the treatment of high-grade cervical intra-epithelial neoplasia (CIN2/3) among HIV-seropositive women by follow-up VIA, cytology and HPV.
1 year

次要结果测量

结果测量
措施说明
大体时间
The ability to use Human Papillomavirus as the measure of treatment success
大体时间：1 year
To determine the utility of subsequent HPV DNA testing as a marker of effective treatment following the treatment of CIN 2/3 among HIV-seropositive women.
1 year
To compare the safety of cryotherapy versus LLETZ in HIV seropositive women
大体时间：1 month, 6 months and 12 months
To compare the safety of cryotherapy versus LLETZ in HIV seropositive women by evaluating adverse events as measured by the Division of AIDS toxicity table 2004 (revised August 2010)
1 month, 6 months and 12 months
Describe factors associated with successful treatment of CIN 2/3
大体时间：1 year
To describe HIV disease status (CD4, HIV viral load), demographics, tissue margins and sexual behavior in each treatment arm (LLETZ and cryotherapy) in HIV seropositive women.
1 year
To determine the cervical disease recurrence rates with cryotherapy and LLETZ.
大体时间：6 months and 12 months
To determine the cervical disease recurrence rates with cryotherapy and LLETZ at 6 months and 12 months by colposcopy
6 months and 12 months

合作者和调查者

在这里您可以找到参与这项研究的人员和组织。

赞助

University of Witwatersrand, South Africa

调查人员

  • 首席研究员：Cynthia S Firnhaber, MD、University of Witwatersrand, South Africa

出版物和有用的链接

负责输入研究信息的人员自愿提供这些出版物。这些可能与研究有关。

一般刊物

研究记录日期

这些日期跟踪向 ClinicalTrials.gov 提交研究记录和摘要结果的进度。研究记录和报告的结果由国家医学图书馆 (NLM) 审查，以确保它们在发布到公共网站之前符合特定的质量控制标准。

研究主要日期

学习开始

2010年3月1日

初级完成 (实际的)

2014年8月1日

研究完成 (实际的)

2014年8月1日

研究注册日期

首次提交

2012年11月6日

首先提交符合 QC 标准的

2012年11月6日

首次发布 (估计)

2012年11月8日

研究记录更新

最后更新发布 (估计)

2014年9月22日

上次提交的符合 QC 标准的更新

2014年9月19日

最后验证

2014年8月1日

更多信息

与本研究相关的术语

关键字

其他相关的 MeSH 术语

其他研究编号

  • ZA.09.0265

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