ClinicalTrials.gg
CompletedNCT03314207Updated Jan 11, 2023

Clinical Evaluation of Patients With X-linked Retinitis Pigmentosa (XLRP)

An observational study in X-Linked Retinitis Pigmentosa, sponsored by Beacon Therapeutics. Completed at 3 sites in United States. Open to male participants aged 6 Years and older. Per ClinicalTrials.gov, last updated 2023-01-11.

Sponsored by Beacon Therapeutics · Observational

Study type
Observational
Model
Cohort
Time perspective
Prospective
Enrollment
14
Ages
6 Years and older
Sex
Male
01

Where this study stands

Counted across the records on this site · 2026-11-12

Among 84 studies in Retinal Degeneration with a site in United States — 11 open to participants now, 29 under way, 3 of them phase 3. Retinal Degeneration · United States.

Enrollment
20th of 21
14 · median 83
Started
2017
with 1 other
Observational
22 of 84
6 open now
Registered
26th of 84
by date
Lead sponsor
7 of 84
Beacon Therapeutics

Among the 84 studies in Retinal Degeneration with a site in United States, this one is the 20th largest by enrollment of the 21 observational ones that give a count, is one of 2 that started in 2017, is one of 22 observational ones, and was the 26th registered.

Retinal Degeneration

132 studies on the registry are indexed under Retinal Degeneration; 23 are open to participants now.

This study's enrollment of 14 is below the median of 78 across 32 observational studies indexed under Retinal Degeneration.

Browse Retinal Degeneration studies →

Open to participants now

11 of the 84 studies in Retinal Degeneration with a site in United States are open now.

All 11 open studies →

A study can be open while its sites in United States have not opened yet or have stopped. Only those recruiting at a site in United States →

Who these studies take

Of the 15 Retinal Degeneration studies recruiting now, 10 (67%) set no upper age limit and 3 (20%) stop at 75 or younger; 7 take children under 18; 5 take healthy volunteers.

This study: 6 Years and older · male · no healthy volunteers.

The full table on the hub →
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Watch this landscapeDownload CSVNarrow it in search →With an account: a weekly mail of what changed among 84 studies in Retinal Degeneration with a site in United States, or all of them as a file.
02

Study summary

The purpose of this study is to evaluate subjects with X-linked retinitis pigmentosa caused by RPGR-ORF15 mutations in a clinical setting to fully characterize their condition, measure testing variability, and estimate rates of progression of clinical parameters.

Read the detailed description

Males with a clinical diagnosis of X-linked retinitis pigmentosa (XLRP) caused by RPGR-ORF15 mutations will be asked to provide informed consent and will have a single blood or saliva sample obtained for DNA sequence analysis of genes known to cause XLRP, including the RPGR-ORF15 gene. All participants will be informed of the results of testing for these mutations. Those with qualifying mutations in the RPGR-ORF15 gene will be evaluated every 6 months for 3 years using a variety of non-invasive visual function tests to more fully characterize their clinical condition. Testing will include routine ophthalmic examinations and tests of visual acuity, perimetry, OCT, fundus imaging, and completion of quality of life questionnaires.

03

Conditions studied

  • X-Linked Retinitis Pigmentosa

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Keywords

  • XLRP
  • retinal degeneration
  • RPGR
  • ORF15
04

Who can participate

Ages eligible
6 Years and older
Sexes eligible
Male
Accepts healthy volunteers
No
Sampling method
Non-probability sample

Study population

Males with a clinical diagnosis of X-linked Retinitis Pigmentosa (XLRP)

Go through the criteria one by one — yes, no or not sure — and take the list to your doctor or the study team. Kept in this browser only.

Inclusion criteria

  • Male subjects with a clinical diagnosis of XLRP and a documented molecular diagnosis from a CLIA-certified laboratory of mutation within the ORF15 exon of the RPGR gene;
  • At least 6 years of age;
  • Willing and able to perform study procedures;
  • Signed (s) obtained (and child assent where applicable).

Exclusion criteria

Exclusion Criteria:

  • Pre-existing eye conditions that would interfere with interpretation of study endpoints (e.g. glaucoma, corneal or lenticular opacities, diabetic retinopathy, history of retinal detachment);
  • Participating in an interventional research study of drugs or devices for treatment of XLRP or other retinal diseases;
  • Monoocular participants
  • Any condition which leads the investigator to believe that the participant cannot comply with the protocol requirements or that may place the participant at an unacceptable risk for participation.
Terms in these criteria, in plain language(1)

Underlined terms in the criteria open these too. Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.

Informed consent

Before you join, the study team explains what taking part involves — its purpose, what happens, the risks and possible benefits — and answers your questions, so you can decide freely. Consent is usually recorded on a form (the informed consent form, ICF) signed by you or, where the law allows, by someone legally authorised to decide for you.

You can keep asking questions during the study, you are told of new information that matters, and you can choose to leave at any time.

05

Study design

Observational model
Cohort
Time perspective
Prospective
Enrollment
14 participants (actual)
Patient registry
No
06

What researchers measure

Primary outcomes

  1. Disease progression in subjects with XLRP

    Time frame: Day 0 - Month 36

Secondary outcomes

  1. Disease progression using visual acuity testing

    Time frame: Day 0 - Month 36

  2. Disease progression using perimetry

    Time frame: Day 0 - Month 36

  3. Disease progression using OCT

    Time frame: Day 0 - Month 36

  4. Disease progression using electroretinography

    Time frame: Day 0 - Month 36

  5. Disease progression using the National Eye Institute Visual Functioning Questionnaire-25 (VFQ-25) quality of life questionnaire

    Time frame: Day 0 - Month 36

07

Study locations

3 sites
  • Duke Eye Center, Duke University Medical Center
    Durham, North Carolina 27710, United States
  • Casey Eye Institute, Oregon Health and Sciences University
    Portland, Oregon 97239, United States
  • Retina Foundation of the Southwest
    Dallas, Texas 75231, United States
08

References and documents

Individual participant data

Plan to share: No

No publications or documents are linked to this record.

09

Timeline

Tracking since Sep 25, 2026
ElapsedEstimatedEstimated, not yet reached

Ran from Dec 2017 to primary completion in Feb 2022, 50 months.

How these figures are worked out, and which studies are left out of them.

Registered
Oct 11, 2017
First posted
Oct 19, 2017
StartActual
Dec 1, 2017
Primary completionActual
Feb 10, 2022
CompletionActual
Feb 10, 2022
Last update
Jan 11, 2023
What these dates mean
Start.
When the first participant enrolled; while estimated, when the study expects to open to recruitment.
Primary completion.
When the last participant was examined or treated to collect data for the study's main question, its primary outcome. A study that stopped early gives the date its data collection stopped.
Completion.
When the last participant's last visit took place, for every outcome, secondary ones and side effects included: the end of the study. Often later than primary completion, sometimes the same day.
Actual and Est.
Actual means the registry says the date has happened. Est. (estimated) is a date the sponsor plans or expects. It can still move, and the sponsor is expected to change it to actual once it has passed.
No changes since tracking began. The registry record was last updated on Jan 11, 2023, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
10

Registry details

Key details

Study ID
NCT03314207
Lead sponsor
Beacon Therapeutics
Responsible party
Sponsor
First posted
Oct 19, 2017
Start date
Dec 1, 2017
Primary completion
Feb 10, 2022
Completion
Feb 10, 2022
Last update
Jan 11, 2023

Study contacts

Matthew Feinsod, MD
study director · Applied Genetics Technologies Corporation

Oversight

Data monitoring committee
No
FDA-regulated drug
No
FDA-regulated device
No
View the source record on ClinicalTrials.gov ↗

Not currently enrolling

This study is completed, as verified in Jan 2023. You cannot join it, but the record below documents what was studied.

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Discussion

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