Study to Evaluate the Safety and Efficacy of SDP-4 in Subjects With Dry Eye Disease (DED) (SDP-4-CS201)
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ClinicalTrials.gov Identifier: NCT03889886 |
Recruitment Status :
Completed
First Posted : March 26, 2019
Last Update Posted : August 28, 2020
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Condition or disease | Intervention/treatment | Phase |
---|---|---|
Dry Eye | Drug: SDP-4 Ophthalmic Solution (0.1%) Drug: SDP-4 Ophthalmic Solution (1.0%) Drug: SDP-4 Ophthalmic Solution (3.0%) Drug: Vehicle | Phase 2 |
Study Type : | Interventional (Clinical Trial) |
Actual Enrollment : | 305 participants |
Allocation: | Randomized |
Intervention Model: | Parallel Assignment |
Intervention Model Description: | Subjects will be randomized to 1 of 3 concentrations (0.1%, 1.0% and 3.0%) of SDP-4 Ophthalmic Solution or vehicle in a 1:1:1:1 ratio in parallel groups. |
Masking: | Quadruple (Participant, Care Provider, Investigator, Outcomes Assessor) |
Masking Description: | All investigational product (SDP-4 concentrations and vehicle) will be provided in single-use doses (SUDs) contained in foil pouches. |
Primary Purpose: | Treatment |
Official Title: | A Phase 2, Multicenter, Double-Masked, Randomized, Vehicle-Controlled, Parallel Group, Dose-Response Study of SDP-4 Ophthalmic Solution in Subjects With Dry Eye Disease (DED) |
Actual Study Start Date : | April 16, 2019 |
Actual Primary Completion Date : | October 7, 2019 |
Actual Study Completion Date : | October 11, 2019 |

Arm | Intervention/treatment |
---|---|
Placebo Comparator: Vehicle
Vehicle
|
Drug: Vehicle
Investigational product (IP) will be administered via topical ocular instillation, one drop per eye, twice daily (BID) for 12 weeks (84 days). Both eyes will be treated. |
Experimental: SDP-4 Ophthalmic Solution (0.1%)
Low concentration of SDP-4
|
Drug: SDP-4 Ophthalmic Solution (0.1%)
Investigational product (IP) will be administered via topical ocular instillation, one drop per eye, twice daily (BID) for 12 weeks (84 days). Both eyes will be treated.
Other Name: SDP-4 (0.1%) |
Experimental: SDP-4 Ophthalmic Solution (1.0%)
Mid concentration of SDP-4
|
Drug: SDP-4 Ophthalmic Solution (1.0%)
Investigational product (IP) will be administered via topical ocular instillation, one drop per eye, twice daily (BID) for 12 weeks (84 days). Both eyes will be treated.
Other Name: SDP-4 (1.0%) |
Experimental: SDP-4 Ophthalmic Solution (3.0%)
High concentration of SDP-4
|
Drug: SDP-4 Ophthalmic Solution (3.0%)
Investigational product (IP) will be administered via topical ocular instillation, one drop per eye, twice daily (BID) for 12 weeks (84 days). Both eyes will be treated.
Other Name: SDP-4 (3.0%) |
- Symptom Assessment in Dry Eye (SANDE) Questionnaire [ Time Frame: 84 days ]Mean change from baseline in total SANDE score at Visit 7/Day 84
- Tear Breakup Time [ Time Frame: 84 days ]Mean change from baseline at each visit
- Anesthetized Schirmer's Test [ Time Frame: 84 days ]Mean change from baseline at each visit
- Conjunctival hyperemia and lissamine green staining measured by slit lamp [ Time Frame: 84 days ]Mean change from baseline at each visit
- Corneal fluoroscein staining [ Time Frame: 84 days ]Mean change from baseline at each visit

Choosing to participate in a study is an important personal decision. Talk with your doctor and family members or friends about deciding to join a study. To learn more about this study, you or your doctor may contact the study research staff using the contacts provided below. For general information, Learn About Clinical Studies.
Ages Eligible for Study: | 18 Years and older (Adult, Older Adult) |
Sexes Eligible for Study: | All |
Accepts Healthy Volunteers: | No |
Inclusion Criteria:
- Have DED in both eyes for ≥ 6 months prior to Visit 1/Screening.
- Total score ≥ 40 on the SANDE questionnaire.
- Tear break-up time (TBUT) of ≤ 6 seconds in both eyes.
- Anesthetized Schirmer's test tear volume ≥ 4 mm and <10 mm in both eyes.
Exclusion Criteria:
- Ocular surface corneal disease, other than DED.
- Lid margin disorder other than meibomian gland dysfunction (MGD).
- Any previous reconstructive or cosmetic eyelid surgery that may affect the normal function of the lids
- Any previous invasive glaucoma and/or corneal surgery
- Corneal refractive surgery in the 12 months prior to Visit 1/Screening.
- Cataract extraction within 90 days prior to Visit 1/Screening.
- Use of ophthlamic corticosteroids, NSAIDs, antibiotics, antihistamines, IOP lowering medication, in the 30 days prior to Visit 1/Screening
- Serious systemic disease or uncontrolled medical condition that in the judgment of the Investigator could confound study assessments

To learn more about this study, you or your doctor may contact the study research staff using the contact information provided by the sponsor.
Please refer to this study by its ClinicalTrials.gov identifier (NCT number): NCT03889886

Study Director: | Jamie Christensen | Silk Technologies |
Responsible Party: | Silk Technologies, Ltd. |
ClinicalTrials.gov Identifier: | NCT03889886 |
Other Study ID Numbers: |
SDP-4-CS201 |
First Posted: | March 26, 2019 Key Record Dates |
Last Update Posted: | August 28, 2020 |
Last Verified: | August 2020 |
Individual Participant Data (IPD) Sharing Statement: | |
Plan to Share IPD: | No |
Studies a U.S. FDA-regulated Drug Product: | Yes |
Studies a U.S. FDA-regulated Device Product: | No |
Keratoconjunctivitis Sicca Dry Eye Syndromes Eye Diseases Keratoconjunctivitis Conjunctivitis Conjunctival Diseases |
Keratitis Corneal Diseases Lacrimal Apparatus Diseases Pharmaceutical Solutions Ophthalmic Solutions |