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OpenTrials
Completed

NCT Number: NCT01461213

Gene Therapy for Blindness Caused by Choroideremia

- Primary objective: To assess the safety and tolerability of the AAV.REP1 vector, administered at two different doses to the retina in 12 patients with a diagnosis of choroideremia.

- Secondary Objective: To identify any therapeutic benefit as evidenced by a slowing down of the retinal degeneration assessed by functional and anatomical methods in the treated eye compared to the control eye 24 months after gene delivery.

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Key information

Age range

18 year and older

Sex eligibility

Male

Study type

Interventional

Phase

Phase 1 / Phase 2

Primary location

Moorfields Eye Hospital NHS Foundation Trust, London, United Kingdom

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About this study

Detailed description may be found in the following scientific publication:

Retinal gene therapy in patients with choroideremia: initial findings from a phase 1/2 clinical trial, The Lancet, Volume 383, Issue 9923, Pages 1129 - 1137 (29 March 2014).

Links: www.thelancet.com/journals/lancet/article/PIIS0140-6736(13)62117-0/abstract ; http://dx.doi.org/doi:10.1016/S0140-6736(13)62117-0

Who can participate

Healthy volunteers accepted: No

Only the study team can determine whether someone qualifies for participation.

Inclusion criteria

  • Participant is willing and able to give informed consent for participation in the study,
  • Male aged 18 years or above,
  • Diagnosed with choroideraemia and in good health,
  • Active disease with SLO changes visible within the macula region,
  • Willing to allow his or her General Practitioner and consultant, if appropriate, to be notified of participation in the study,
  • Vision at least 6/60 or better in the study eye.

Exclusion criteria

  • Female and child participants (under the age of 18),
  • Men unwilling to use barrier contraception methods, if relevant,
  • Previous history of retinal surgery or ocular inflammatory disease (uveitis),
  • Grossly asymmetrical disease or other ocular morbidity which might confound use of the fellow eye as a long-term control,
  • Any other significant disease or disorder which, in the opinion of the Investigator, may either put the participants at risk because of participation in the study, or may influence the result of the study, or the participant's ability to participate in the study,
  • Participants who have participated in another research study involving an investigational product in the previous 12 weeks.

Treatment and study plan

rAAV2.REP1

Drug

Single subretinal injection of rAAV2.REP1 vector suspension containing 10e12 genome particles per ml. Dose 1 = dose containing approximately 10e10 rAAV2.REP1 genome particles. Dose 2 = dose containing approximately 10e11 rAAV2.REP1 genome particles.

Other names: Adeno-associated viral vector

Primary outcomes

  1. Visual acuity

    Time frame: 6 months

    Best corrected visual acuity, following cataract surgery if indicated

Secondary outcomes

  1. Microperimetry, OCT and fundus autofluorescence

    Time frame: 24 months

    Structure function correlations at the margins of the retinal degeneration

Sponsors and collaborators

Lead sponsor

University of Oxford

Other

Collaborators

  • Manchester University NHS Foundation Trust
  • Moorfields Eye Hospital NHS Foundation Trust
  • Oxford University Hospitals NHS Trust
  • University College, London
  • University Hospital Southampton NHS Foundation Trust
  • University of Manchester
  • University of Southampton

Registry information

Official study title

An Open Label Dose Escalation Phase 1 Clinical Trial of Retinal Gene Therapy for Choroideraemia Using an Adeno-associated Viral Vector (AAV2) Encoding Rab-escort Protein 1 (REP1)

Important dates

Study start
2011
Primary completion
2017
Study completion
2017
First posted
Oct 28, 2011
Registry last updated
Nov 17, 2017

OpenTrials presents study information sourced from ClinicalTrials.gov. The official registry record should be consulted for the latest information.

View the official ClinicalTrials.gov record (opens in a new tab)

This listing is for discovery and informational purposes only. It is not medical advice, does not guarantee that a study is recruiting, and does not determine eligibility. Contact the study team and a qualified healthcare professional when considering participation.

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