Recent Updates
Recently added Catalysts

PL9643

Phase 3

Dry Eye | Small molecule | Ophthalmology |Palatin Technologies, Inc.|Trials Updated: Oct 17, 2024

PL9643 target and mechanism

Molecular targetMC1R
Target classReceptor
ModalitySmall molecule

Also known as PL9643 Ophthalmic Solution

Success Probability

Subscribe to view

Market & Valuation

Subscribe to view

Trial Design

RandomizedDouble-BlindACTIVE_CONTROLLEDDMC
Total Trials2
Total Enrollment735

FDA Designations

No designations recorded

PL9643 clinical trials

PL9643 · 2 trials · 3 indications

Phase 3 1Phase 2 1
NCT05201170A Phase 3, Multi-Center Study Evaluating PL9643 in Patients with Dry EyeDry Eye
COMPLETED575 Analytics
PHASE3COMPLETED
A Phase 3, Multi-Center Study Evaluating PL9643 in Patients with Dry Eye
Dry EyeUnlock trial analytics

Study Endpoints

Primary Endpoints

Conjunctival Sum Lissamine Green Staining
Visit 6 (Day 85), Change from Pre-CAE to Post-CAE

Measured by the Ora Calibra® Scale. Change from Baseline to week 12.

Ocular Pain
Change from Pre-CAE to Post-CAE at Visit 6 (Day 85)

As Measured by Visual Analog Scale (VAS). PL9643 versus Vehicle, in hyper-responder sub-population. Hyper-responder sub-population is defined as those patients achieving a VAS score of 4 or greater within the first 30 minutes of being challenged in the CAE® (clinical symptom) at Visit 2.

Inferior Corneal Fluorescein Staining Using The Ora Calibra Scale
Day 85

An assessment of corneal fluorescein staining using the 0 \[none\] to 4 \[worst\] Ora Calibra Scale prior to and following exposure to a challenge in a controlled adverse environment (CAE)

Ocular Discomfort Using The Ora Calibra Scale
Day 85

A patient-reported subjective assessment of ocular discomfort using the 0 \[none\] to 4 \[worst\] Ora Calibra Scale recorded at each study visit throughout the treatment period

Secondary Endpoints

Nasal Lissamine Green Staining in Study Eye
Change from Baseline to Visit 6 (Day 85), Pre-CAE
Tear Film Break-Up Time (TFBUT) in Study Eye
Change from Baseline to Visit 6 (Day 85), Post-CAE
Total Sum Lissamine Green Staining in Study Eye
Change from Baseline Pre-CAE® to Week 12 Pre-CAE
Unlock Study Endpoints

Study Design & Arms

AllocationRANDOMIZED
MaskingQUADRUPLE
ModelPARALLEL
PurposeTREATMENT

Treatment Arms

ArmTypeDescription
PL9643 Ophthalmic SolutionEXPERIMENTALPL9643 ophthalmic solution bilaterally three times a day.
Vehicle Ophthalmic SolutionACTIVE_COMPARATORVehicle ophthalmic solution bilaterally three times a day.
Placebo Ophthalmic Solution (vehicle)PLACEBO_COMPARATORvehicle

Interventions

NameTypeDescription
Vehicle Ophthalmic SolutionDRUGOphthalmic Solution
PL9643 Ophthalmic SolutionDRUGOphthalmic Solution
Placebo Ophthalmic SolutionDRUGPlacebo solution as topical ophthalmic drops administered bilaterally for 12 weeks.
Unlock Study Design Details

Eligibility Criteria

Age Range18 Years to N/A
SexALL
Healthy VolunteersNo
Study Sites18

Inclusion Criteria: 1. Be at least 18 years of age; 2. Provide written informed consent; 3. Be willing and able to comply with all study procedures; 4. Have a patient-reported history of dry eye for at least 5 years prior to Visit 1; 5. Have a history of use or desire to use eye drops for dry eye s...

Countries:United States
Unlock Eligibility Criteria

Frequently asked questions about PL9643

What is PL9643 used for?

PL9643 is an investigational ophthalmic solution being developed for the treatment of dry eye disease. It is a small molecule formulated as an eye drop and is currently in Phase 3 clinical development. The program is led by Palatin Technologies, Inc. under the ticker PTN.

What does PL9643 target?

PL9643 targets the melanocortin 1 receptor, or MC1R, a receptor involved in regulating inflammation and immune responses. By activating MC1R, the drug is designed to address the inflammatory component of dry eye disease. This mechanism distinguishes it from conventional lubricating or anti-inflammatory eye drops.

Who is developing PL9643?

PL9643 is being developed by Palatin Technologies, Inc., a biopharmaceutical company that trades under the ticker symbol PTN. Palatin is responsible for the clinical development program of PL9643, including the Phase 2 and Phase 3 trials conducted in the United States.

What phase is PL9643 in?

PL9643 is in Phase 3 clinical development for dry eye disease. A Phase 3 trial has been completed, and the drug remains investigational, meaning it has not been approved by the FDA for any indication. Further regulatory steps would be required before any potential approval.

What clinical trials is PL9643 in?

PL9643 has been studied in two completed trials: a Phase 3 trial, NCT05201170, which enrolled 575 patients with dry eye, and a Phase 2 trial, NCT04268069, which enrolled 160 patients with dry eye disease. Both were conducted in the United States.

Is PL9643 the same as PL9643 Ophthalmic Solution?

Yes, PL9643 Ophthalmic Solution is another name for PL9643. The term refers to the same investigational small molecule formulated as an eye drop for the treatment of dry eye disease. Both names are used interchangeably in reference to the Palatin Technologies development program.