Overview

Gene Therapy Clinical Trial for the Treatment of Leber's Hereditary Optic Neuropathy Associated With ND4 Mutations

Status:
Not yet recruiting
Trial end date:
2027-08-01
Target enrollment:
0
Participant gender:
All
Summary
The objective of this clinical study is to evaluate the safety and efficacy of NR082 in the treatment of LHON caused by mitochondrial ND4 gene mutation. This study will enroll subjects aged ≥ 18 years old and ≤ 75 years old to receive a single unilateral intravitreal (IVT) injection of NR082 to evaluate its safety and efficacy. The clinical manifestations of all subjects are to be reduced visual acuity caused by LHON associated with ND4 mutation, with laboratory test showing G11778A mutation (a CLIA-certified laboratory) and reduced visual acuity lasted for > 6 months and < 10 years.
Phase:
Phase 1/Phase 2
Accepts Healthy Volunteers?
No
Details
Lead Sponsor:
Neurophth Therapeutics Inc
Criteria
Inclusion Criteria:

1. Age at the time of signing the informed consent form: the age of the subjects must be
≥ 18 years old and ≤ 75 years old.

2. The clinical manifested vision loss due to LHON, and any eye BCVA ≥ 0.5 LogMAR

3. The genotype testing result shows the presence of G11778A mutation in the ND4 gene,
and the absence of the other primary LHON associated mutations in the mitochondrial
DNA (mtDNA) (ND1 [G3460A] or ND6 [T14484C]) (confirmed by a CLIA-certified
international laboratory

4. The vision loss in the eye with worse visual acuity lasted > 6 months and < 10 years
at screening

5. Pupils can be adequately dilated for a thorough ocular examination and visual acuity
test

6. Each eye of the subject must maintain at least Hand Motion VA (≤ 2.3 LogMAR) as
defined in the ocular/vision examination manual (operating manual for refraction and
VA examinations) in this study

7. Willingness to comply with the clinical study protocol and 5 years of long-term
follow-up after administration

8. Male or female

1. A male subject must agree to take contraceptive measures at least 6 months after
the treatment visit;

2. A female subject is eligible to participate if she is not pregnant , not
breastfeeding, and at least one of the following conditions applies:i)Not a woman
of childbearing potential (WOCBP) ;ii) A WOCBP who agrees to follow the
contraception guidance for at least 6 months after the treatment visit

9. Written informed consent form must be obtained from the subject or his/her
parent/legal guardian before any study-related procedures are performed.If the subject
is legally blind (> 1.0 LogMAR or the readings of decimal visual acuity chart <0.1),
an impartial witness must be present throughout the informed consent process and
discussion process.

Exclusion Criteria:

1. Any known allergy and/or hypersensitivity to the study drug or its constituents

2. Contraindication to IVT injection in any eye

3. IVT drug delivery to any eye within 30 days prior to the screening visit

4. History of vitrectomy in either eye

5. Narrow anterior chamber angle in any eye contra-indicating pupillary dilation

6. Presence of disorders or diseases of the eye or adnexa, excluding LHON, which may
interfere with visual or ocular assessments, including spectral-domain optical
coherence tomography (SD-OCT), during the study

7. Presence of known/documented mutations, other than the LHON-related mutation, which
are known to cause pathology of the optic nerve, retina or afferent visual system

8. Presence of systemic or ocular/vision diseases, disorders, or pathologies, other than
LHON, known to cause or be associated with vision loss, or whose associated
treatment(s) or therapy(ies) is/are known to cause or be associated with vision loss

9. Presence of optic neuropathy from any cause other than LHON

10. Presence of illness or disease that, in the opinion of the investigator, include
symptoms and/or the associated treatments that can alter visual function, for instance
cancers or pathology of the central nervous system (CNS), including multiple sclerosis
(diagnosis of multiple sclerosis must be based on the 2010 Revisions to the McDonald
Criteria) , and/or diseases or conditions that affect the safety of subjects
participating in the study

11. History of recurrent uveitis (idiopathic or immune-related) or active ocular
inflammation

12. Participated in another clinical study and receive an IMP within 90 days prior to the
screening visit

a) Exceptions: Subjects who have completed the clinical study of idebenone as IMP > 90
days prior to the screening visit and has completely discontinued idebenone at least 7
days prior to dosing are still eligible to participate in the study.

13. Any eye has previously received ocular gene therapy

14. Subjects who refused to stop using idebenone

15. Have undergone ocular surgery of clinical relevance (per investigator's assessment)
within 90 days prior to the screening visit

16. Female subjects who are breastfeeding or plan to breastfeed within the first 6 months
after the administration of NR082 Injection

17. History of drug or alcohol abuse (including heavy smoking, i.e., > 20 cigarettes per
day or >20 pack-years [equivalent to one pack a day for 20 years or 2 packs a day for
10 years])

18. Human immunodeficiency virus (HIV) antibody, syphilis antibody and HCV antibody
positive are excluded; hepatitis B test that shows a clinically significant active
infection requiring treatment (defined as the presence of hepatitis B core antibody
[HBcAb] positive or hepatitis B surface antigen [HBsAg] positive, and hepatitis B
virus deoxyribonucleic acid [HBV-DNA]) > 1000 copies/mL or according to local
laboratory method above lower limit of quantitative detection) are excluded

19. Unable to tolerate (e.g., immunomodulatory regimen) or unable or unwilling to comply
with all the protocol requirements

20. Subjects from the study site fail to comply with or do not agree to comply with local
and institutional guidelines for suspected 2019 novel coronavirus (COVID-19)
infection/testing

21. Any other exclusions determined by the investigator