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Impact of V106I on Resistance to Doravirine (V106IFC)

Phenotypic and Site Directed Mutagenesis Analysis on the Impact of V106I in HIV-1 Reverse Transcriptase on Resistance to Doravirine

Objective. To study the impact of V106I mutation in the reverse transcriptase of HIV-1 on the activity of Doravirine.

Clinical hypotheses.

Doravirine shows a unique resistance pattern with a higher genetic barrier to resistance than other NNRTIs. In contrast to K103N or E138A, the prevalence of single mutations and/or combination of mutations against Doravirine is low. However, in a recent survey conducted in Spain the study investigators have found a V106Iprevalence similar to K103N and E138A. There is a clear need to understand the real impact of this mutation on Doravirine resistance.

研究概览

地位

尚未招聘

条件

详细说明

Testing for transmitted drug resistance (TDR) in the reverse transcriptase and protease in newly diagnosed patients with HIV is recommended by treatment guidelines. Currently clinical practice for first line treatment is moving to a test and treat approach. In this setting, Spanish GESIDA guidelines indicate that a first line protease (PI) or integrase (INI) inhibitor-based regimen may be started even if results from baseline resistance are yet not available. This indication is based on the very low prevalence of INI or PI TDR.

In Europe, TDR to NNRTIs has stabilized between 4-5%. Doravirine has a unique mutational pattern and its activity is affected by mutations that are usually not found at baseline as TDR (V106A/M, V108I, Y188L, G190S, F227 C/L/V, M230I/L, L234I, P236L Y318F and K103N/Y181C), as a recent European survey has already shown. In addition, these findings have been confirmed in a survey the study investigators have conducted in Spain. However, in this study the Stanford algorithm was used to evaluate clinical resistance to NNRTIs and, surprisingly found an unexpected high prevalence of resistance to Doravirine (as high as for first generation NNRTIs). Study investigators detected that resistance to Doravirine was mainly driven by V106I mutation, which Stanford scores as "low-level resistance".

MeditRes is a consortium of HIV clinical virologists from France (leader Anne-Genevieve Marcellin, Paris), Italy (leader Francesca Ceccerini-Silbesrtein, Rome, Spain (leader Federico García, Granada), Greece (leader Dimitrios Paraskevis, Athens) and Portugal (leader Perpetua Gomes, Lisbon). Each of these team leaders has access/coordinate local or national cohorts in their countries.

This study aims to investigate the prevalence of V106I TDR in patients joining the MEDITRES consortium during years 2018 and 2019. In patients carrying V106I in the background of a wild-type virus phenotypic resistance to Doravirine will be evaluated the Fold-Change (FC) will be calculated. In addition, Site Directed Mutagenesis (SDM) will be used to evaluate FC to Doravirine in the background of B and CRF02-AG subtypes. Patient recruitment will follow general recruitment procedures to be incorporated into each running cohorts currently contributing to MEDITRES (multicentre, prospective cohort of HIV-positive, antiretroviral-naïve subjects over 18 years of age, including both seroprevalent and seroconverter patients).

研究类型

观察性的

注册 (预期的)

50

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。

学习联系方式

  • 姓名:Federico Garcia, PhD
  • 电话号码:+34649894291
  • 邮箱:fegarcia@ugr.es

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

13年 至 75年 (孩子、成人、年长者)

接受健康志愿者

不

有资格学习的性别

全部

取样方法

非概率样本

研究人群

HIV positive patients, newly diagnosed and naive to antiretroviral treatment

描述

Inclusion Criteria:

Antiretroviral-naïve subjects over 13 years of age, including both seroprevalent and seroconverter patients

Exclusion Criteria:

Patients with prior antiretroviral exposure

-

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

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
Fold Change in resistance to Doravirine
大体时间:Day 0
Change in EC50 for resistance to Doravirine in the presence of V106I
Day 0

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。

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 (预期的)

2021年9月1日

初级完成 (预期的)

2021年10月1日

研究完成 (预期的)

2022年5月1日

研究注册日期

首次提交

2021年5月9日

首先提交符合 QC 标准的

2021年5月15日

首次发布 (实际的)

2021年5月20日

研究记录更新

最后更新发布 (实际的)

2021年8月18日

上次提交的符合 QC 标准的更新

2021年8月17日

最后验证

2021年8月1日

更多信息

与本研究相关的术语

其他研究编号

  • HUCSC-V106I

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