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Aceclidine+ Brimonidine

Phase 3

Presbyopia | Small molecule | Ophthalmology |LENZ Therapeutics, Inc.|Trials Updated: Oct 8, 2026

Success Probability

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Market & Valuation

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Trial Design

RandomizedDouble-BlindACTIVE_CONTROLLEDDMC
Total Trials7
Total Enrollment1,275

FDA Designations

No designations recorded

Aceclidine+ Brimonidine clinical trials

Aceclidine+ Brimonidine · 7 trials · 8 indications

Phase 3 3Phase 2 3Phase 1 1
NCT05728944Phase 3 Efficacy Study of LNZ100 & LNZ101 for the Treatment of PresbyopiaPresbyopia
COMPLETED229 Analytics
NCT05753189Phase 3 Safety Study of LNZ100 and LNZ101 for the Treatment of Presbyopia SubjectsPresbyopia
COMPLETED362 Analytics
NCT05656027Phase 3 Evaluation of the Safety and Efficacy of LNZ100 & LNZ101 for the Treatment of PresbyopiaPresbyopia
COMPLETED469 Analytics
PHASE3COMPLETED
Phase 3 Efficacy Study of LNZ100 & LNZ101 for the Treatment of Presbyopia
PresbyopiaUnlock trial analytics
PHASE3COMPLETED
Phase 3 Safety Study of LNZ100 and LNZ101 for the Treatment of Presbyopia Subjects
PresbyopiaUnlock trial analytics
PHASE3COMPLETED
Phase 3 Evaluation of the Safety and Efficacy of LNZ100 & LNZ101 for the Treatment of Presbyopia
PresbyopiaUnlock trial analytics

Study Endpoints

Primary Endpoints

Percentage of Participants With a ≥ 3-line Improvement in Near Vision and no Loss ≥ 5 Letters Distance Vision
3 hours post-treatment in the study eye on Day 1

Percentage of participants with at least a 3-line improvement in near vision and no loss ≥ 5 letters distance vision on Day 1

Number of Participants With at Least One Treatment-Related TEAE
7 visits over a total duration of approximately 28 weeks

Number and Percentage of Participants with at least one Treatment-Related Treatment-Emergent Adverse Events (TEAE) were collected by systematic assessment and coded using MedDRA.

Proportion of Subjects With at Least a 3 Line (15 Letter) Improvement in Near Visual Acuity in the Study Eye
1 hour post-treatment

Proportion of subjects with at least a 3 line (15 letter) improvement in near visual acuity in the study eye at 1 hour post-treatment in the mITT population

Cmax
Day 1 and Day 8

Maximum plasma concentrations of LNZ100 and LNZ101

Tmax
Day 1 and Day 8

Time of maximum plasma concentrations of LNZ100 and LNZ101

AUC0-t
Day 1 and Day 8

Area under the concentration-time curve from time 0 to time t of LNZ100 and LNZ100

AUC0-inf
Day 1 and Day 8

Area under the concentration-time curve from time 0 to infinity of LNZ100 and LNZ101

T1/2
Day 1 and Day 8

Terminal half-life of LNZ100 and LNZ101

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Study Design & Arms

AllocationRANDOMIZED
MaskingQUADRUPLE
ModelPARALLEL
PurposeTREATMENT

Treatment Arms

ArmTypeDescription
Aceclidine + Brimonidine (LNZ101) dosed bilaterallyEXPERIMENTALLNZ101: Aceclidine + Brimonidine ophthalmic solution
Aceclidine Ophthalmic Solution (LNZ100) dosed bilaterallyEXPERIMENTALLNZ100: Aceclidine ophthalmic solution
Vehicle Ophthalmic Solution dosed bilaterallyEXPERIMENTALVehicle ophthalmic solution
Brimonidine ophthalmic solution dosed bilaterallyEXPERIMENTALBrimonidine ophthalmic solution
Combination ophthalmic solution (LNZ101) dosed bilaterallyEXPERIMENTALLNZ 101: Aceclidine/Brimonidine combination ophthalmic solution
Aceclidine+tropicamide combinationEXPERIMENTALAceclidine+tropicamide combination single dose (PRX-100 Ophthalmic Solution)
AceclidineACTIVE_COMPARATORAceclidine single dose
VehicleSHAM_COMPARATORVehicle single dose
LNZ101OTHERAceclidine 1.75% / Brimonidine combination (non-preserved) ophthalmic solution
LNZ100OTHERAceclidine 1.75% (non-preserved) ophthalmic solution

Interventions

NameTypeDescription
Aceclidine+Brimonidine combination ophthalmic solutionDRUGAceclidine + Brimonidine combination ophthalmic solution
Aceclidine ophthalmic solutionDRUGAceclidine ophthalmic solution
VehicleDRUGProprietary vehicle ophthalmic solution
BrimonidineDRUGBrimonidine ophthalmic solution
Vehicle proprietary ophthalmic solutionDRUGProprietary Vehicle ophthalmic solution
Aceclidine+tropicamide combinationDRUGOphthalmic Solution
AceclidineDRUGOphthalmic Solution
Aceclidine + BrimonidineDRUGLNZ101 (Aceclidine/Brimonidine) non-preserved ophthalmic solution
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Eligibility Criteria

Age Range45 Years to 75 Years
SexALL
Healthy VolunteersYes
Study Sites17

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....

Countries:United States
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Frequently asked questions about Aceclidine+ Brimonidine

What is Aceclidine+Brimonidine?

Aceclidine+Brimonidine is an investigational ophthalmic small molecule combination being developed by LENZ Therapeutics, Inc. (ticker: LENZ) for presbyopia and other eye diseases. It is designed as a topical eye drop. The combination has been studied in completed clinical trials, including Phase 3 studies, but is not approved for marketing.

What is Aceclidine+Brimonidine used for?

Aceclidine+Brimonidine is being developed for the treatment of presbyopia, a common age-related eye condition that reduces near vision. It is also being studied in the broader category of eye diseases. The investigational therapy is intended for adults with presbyopia, with clinical trials enrolling participants aged 45 years and older.

Who makes Aceclidine+Brimonidine?

Aceclidine+Brimonidine is being developed by LENZ Therapeutics, Inc., a biopharmaceutical company that trades under the ticker symbol LENZ. LENZ Therapeutics is focused on developing therapies for presbyopia and other vision conditions. The company is the sponsor of the clinical trials evaluating this ophthalmic combination.

What phase is Aceclidine+Brimonidine in?

Aceclidine+Brimonidine has been evaluated in Phase 1 and Phase 3 clinical trials. The Phase 3 trials have been completed, and the Phase 1 trial has also been completed. As of the available information, the drug remains investigational and is not approved by the FDA for any indication.

What clinical trials is Aceclidine+Brimonidine in?

Aceclidine+Brimonidine has been studied in several completed clinical trials, including NCT05936489 (Phase 1), NCT05753189 (Phase 3), NCT05728944 (Phase 3), and NCT05656027 (Phase 3). These trials enrolled adults with presbyopia and were conducted in the United States. All listed trials are completed.