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Enrolling by invitationNCT05921162EXTENDUpdated Mar 25, 2025

A Long-Term Follow-Up Study in Subjects Who Received vMCO-I Administered Via Intravitreal Injection

An observational study in Retinitis Pigmentosa, Retinal Disease and Retinal Degeneration, sponsored by Nanoscope Therapeutics Inc.. Enrolling by invitation at 1 site in India. Open to participants aged 18 Years and older. Per ClinicalTrials.gov, last updated 2025-03-25.

Sponsored by Nanoscope Therapeutics Inc. · Observational

From the registry’s dates

  • Primary completion was expected by May 2025, 1 year 6 months ago, but the record still lists the study as enrolling by invitation.
Study type
Observational
Model
Cohort
Time perspective
Prospective
Enrollment
11
Ages
18 Years and older
Sex
All
01

Study summary

This study "A Long-Term Follow-Up Study in Subjects Who Received an Adeno-Associated Viral Vector Serotype 2 Containing the Multi-Characteristic Opsin Gene (vMCO-I) Administered Via Intravitreal Injection" is an observational study and will be conducted following Good Clinical Practice (GCP)- International Conference on Harmonization (ICH) guidelines. Eligible subjects satisfying all inclusion and none of the exclusion criteria will be enrolled. All subject who completed the parent clinical study (NSCT/CT/18/01) will undergo safety and efficacy assessments up to 5 years post study drug injection

Read the detailed description

The observational study population comprises of individuals who received an Adeno-Associated Viral Vector Serotype 2 Containing the Multi-Characteristic Opsin Gene (vMCO-I) Administered Via Intravitreal Injection in a parent study.

Enrolled subjects will undergo safety and efficacy assessments for up to 5 years from the vMCO-I administration. At the visits, subjects will have safety and efficacy evaluations. Subjects will have a final visit at 60 months post study drug administration.

02

Conditions studied

  • Retinitis Pigmentosa
  • Retinal Disease
  • Retinal Degeneration

Keywords

  • Optogenetics
  • Gene Therapy
  • AAV Vectors
  • Multicharacteristic Opsin (MCO)-I
03

In context

Retinitis Pigmentosa

278 studies on the registry are indexed under Retinitis Pigmentosa; 72 are open to participants now.

This study's planned enrollment of 11 is below the median of 52 across 87 observational studies indexed under Retinitis Pigmentosa.

Browse Retinitis Pigmentosa studies →

Lead sponsor

Nanoscope Therapeutics Inc. is the lead sponsor of 8 studies on the registry; 2 are open to participants now.

Counted across the registry records on this site, refreshed daily.

04

Who can participate

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

Study population

It is expected that a total of 11 study subjects from NSCT/CT/18/01 study will be enrolled. Subjects who meet all the inclusion criteria and for whom none of the exclusion criteria apply will be eligible for enrollment.

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

  • The subject population includes subjects who received an Adeno-Associated Viral Vector Serotype 2 Containing the Multi-Characteristic Opsin Gene (vMCO-I), administered via intravitreal injection in a parent study.

Exclusion criteria

Exclusion Criteria:

  • Subjects who will not consent for study.
05

Study design

Observational model
Cohort
Time perspective
Prospective
Enrollment
11 participants (estimated)
Patient registry
No

Groups and cohorts

  • Observation of Participants exposed to 1.2E11gc/eye of vMCO-I

    This is a long-term follow-up observational study of participants who previously received 1.2E11gc/eye of vMCO-I No investigational product will be administered in this study.

    Biological: Gene Therapy product:vMCO-I

  • Observation of Participants exposed to 0.6E11gc/eye of vMCO-I

    This is a long-term follow-up observational study of participants who previously received 0.6E11gc/eye of vMCO-I No investigational product will be administered in this study.

    Biological: Gene Therapy product:vMCO-I

Interventions

  • BiologicalGene Therapy product:vMCO-I

    Safety evaluation to monitor long term effects of previously injected vMCO-I in RP patients

06

What researchers measure

Primary outcomes

  1. Assessment of the long-term safety profile of a single intravitreal injection of vMCO-I

    Assessments of Incidences, nature, and severity of treatment emergent adverse events (TEAEs), Serious Adverse Events (SAEs); intraocular inflammation graded through ocular exam; intraocular pressure and retinal anatomy

    Time frame: 20 Months

  2. Evaluation of the long-term efficacy of a single intravitreal injection of Multi-Characteristic Opsin (vMCO-I)

    Assessment of treatment effect with the change from baseline in Freiburg Visual Acuity (quantitative LogMAR score)

    Time frame: 20 Months

Secondary outcomes

  1. Assessment of the effect of vMCO-I on functional vision outcomes

    Assessment of the treatment effect on the quality of Life with changes from baseline in activities of daily living using the National Eye Institute (NEI) Visual Function Questionnaire-25

    Time frame: 20 Months

  2. Assessment of the durability of vMCO-I induced gene reporter expression

    Assessment of PK parameters including the Change in fundus fluorescence intensity of reporter (mCherry)

    Time frame: 20 Months

07

Study locations

1 site
  • JPM Rotary Club of Cuttack Eye Hospital and Research Institute
    Cuttack, Odisha 753014, India
08

References and documents

Individual participant data

Plan to share: Yes — The results of the clinical trial will be made available when the study is completed and results are analyzed. The results will be published on this site and be available to conference presentations and publications.

Time frame: Within a year from the long term monitoring data availability

Access criteria: IPD sharing access will be subject to data transfer agreement. IPD generated as part of this clinical study may be subject to patient confidentiality.

No publications or documents are linked to this record.

09

Timeline

Tracking since Sep 25, 2026
ElapsedEstimatedEstimated, not yet reachedSimilar studies: half by the dot; the band is the middle halfHalf of similar studies reached it by the dot; the band is the middle half, from a quarter to three quarters

Started Jul 2023 (actual). Primary completion is estimated for May 2025, 22 months after the start.

Of 48 observational studies under Retinitis Pigmentosa, half reached primary completion within 76 months of starting (the median), counting those still running; a quarter within 28. This study's planned 22 months is below that.

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

Registered
Jun 19, 2023
First posted
Jun 27, 2023
StartActual
Jul 14, 2023
Primary completionEst.
May 2025
CompletionEst.
May 2025
Last update
Mar 25, 2025
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 Mar 25, 2025, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
10

Registry details

Key details

Study ID
NCT05921162
Lead sponsor
Nanoscope Therapeutics Inc.
Responsible party
Sponsor
First posted
Jun 27, 2023
Start date
Jul 14, 2023
Primary completion
May 2025 (estimated)
Completion
May 2025 (estimated)
Last update
Mar 25, 2025

Study contacts

Samarendra Mohanty
study director · Nanoscope Therapeutics Inc.

Oversight

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

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No contact was published for this record. The registry link below has the sponsor’s details.

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