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Phase 3 Efficacy Study of LNZ100 & LNZ101 for the Treatment of Presbyopia

A Multi-Center, Double-Masked Phase 3 Evaluation of the Safety and Efficacy of LNZ101 for the Treatment of Presbyopia

Status
Completed
Phases
Phase 3
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT05728944
Acronym
CLARITY 2
Enrollment
229
Registered
2023-02-15
Start date
2023-03-06
Completion date
2024-01-24
Last updated
2026-02-25

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Presbyopia, Near Vision, Refractive Error, Eye Diseases

Keywords

Pharmaceutical Solutions, Ophthalmic Solutions, Eye Drops, CLARITY, Presbyopia, Miotics

Brief summary

Phase 3 Efficacy Study to evaluate the Safety and Efficacy of LNZ100 & LNZ101 for the Treatment of Presbyopia

Detailed description

Phase 3 study to evaluate the safety and effectiveness of LNZ101 compared with LNZ100 and Vehicle for the treatment of Presbyopia.

Interventions

Aceclidine + Brimonidine combination ophthalmic solution

Aceclidine ophthalmic solution

DRUGVehicle

Proprietary vehicle ophthalmic solution

Sponsors

LENZ Therapeutics, Inc
Lead SponsorOTHER

Study design

Allocation
RANDOMIZED
Intervention model
PARALLEL
Primary purpose
TREATMENT
Masking
QUADRUPLE (Subject, Caregiver, Investigator, Outcomes Assessor)

Intervention model description

A multi-center, double masked, randomized, controlled, efficacy and safety study

Eligibility

Sex/Gender
ALL
Age
45 Years to 75 Years
Healthy volunteers
Yes

Inclusion criteria

Subjects MUST: 1. Be able and willing to provide written informed consent and sign a Health Information Portability and Accountability Act (HIPAA) form prior to any study procedure being performed; 2. Be able and willing to follow all instructions and attend all study visits; 3. Be 45-75 years of age of either sex and any race or ethnicity at Visit 1; 4. Have +1.00 to -4.00 diopter (D) of sphere calculated in minus cylinder (so that spherical equivalent (SE) results in myopia no more severe than -4.00 D MRSE) in both eyes determined by manifest refraction documented at Visit 1; 5. Have ≤2.00 D of cylinder (minus cylinder) in both eyes determined by manifest refraction documented at Visit 1; 6. Be presbyopic as determined at Visit 1

Exclusion criteria

Subjects must NOT: 1. Be a female of childbearing potential who is currently pregnant, nursing, or planning a pregnancy; 2. Have known contraindications or sensitivity to the use of any of the study medications or their components; 3. Have an active ocular infection at Visit 1 or at Visit 2 (bacterial, viral, or fungal), positive history of an ocular herpetic infection, preauricular lymphadenopathy, or ongoing, active ocular inflammation in either eye; 4. Have moderate or severe dry eye defined as total central corneal fluorescein staining in either eye at Visit 1; 5. Have clinically significant abnormal lens findings including early lens changes during dilated slit lamp biomicroscopy and fundus exam documented within 3 months of Visit 1 or at Visit 1;

Design outcomes

Primary

MeasureTime frameDescription
Percentage of Participants With a ≥ 3-line Improvement in Near Vision and no Loss ≥ 5 Letters Distance Vision3 hours post-treatment in the study eye on Day 1Percentage of participants with at least a 3-line improvement in near vision and no loss ≥ 5 letters distance vision on Day 1

Countries

United States

Contacts

STUDY_DIRECTORKris Gambelin, BS

LENZ Therapeutics, Inc

Baseline characteristics

Characteristic
Age, Continuous54.4 years
STANDARD_DEVIATION 5.45
Ethnicity (NIH/OMB)
Hispanic or Latino
14 Participants
Ethnicity (NIH/OMB)
Not Hispanic or Latino
71 Participants
Ethnicity (NIH/OMB)
Unknown or Not Reported
0 Participants
Race (NIH/OMB)
American Indian or Alaska Native
3 Participants
Race (NIH/OMB)
Asian
4 Participants
Race (NIH/OMB)
Black or African American
1 Participants
Race (NIH/OMB)
More than one race
0 Participants
Race (NIH/OMB)
Native Hawaiian or Other Pacific Islander
1 Participants
Race (NIH/OMB)
Unknown or Not Reported
2 Participants
Race (NIH/OMB)
White
208 Participants
Sex: Female, Male
Female
149 Participants
Sex: Female, Male
Male
25 Participants

Adverse events

Event typeEG000
affected / at risk
EG001
affected / at risk
EG002
affected / at risk
deaths
Total, all-cause mortality
0 / 760 / 770 / 76
other
Total, other adverse events
39 / 7637 / 7714 / 76
serious
Total, serious adverse events
0 / 760 / 771 / 76

Outcome results

None listed

Source: ClinicalTrials.gov · Data processed: Feb 26, 2026