Tolerability, Safety and Efficacy of Lubricin vs Sodium Hyaluronate Eye Drops in Subjects With Moderate Dry Eye

Not Applicable

Completed

Conditions: Dry Eye Syndrome
Tear Film Insufficiency

Interventions: Device: Sodium Hyaluronate
Device: Lubricin

Registration Number: NCT02510235

Lead Sponsor: Dompé Farmaceutici S.p.A

Brief Summary: The objective of the clinical investigation was to evaluate tolerability, safety and efficacy of the tested medical device, eye drop containing Lubricin 150 µg/mL, as compared with a standard sodium hyaluronate 0.13% eye drop solution in subjects with moderate dry eye disease.

Primary objective:

• Symptom Assessment in Dry Eye (SANDE)

Secondary objectives:

* Treatment-emergent adverse events (TEAEs);

* Visual analogue scale (VAS) for ocular tolerability (foreign body sensation, burning/stinging, itching, pain, stick feeling, blurred vision and photophobia);

* Tear film osmolarity;

* Assessment of best corrected distance visual acuity (BCDVA)

* Slit lamp examination (SLE) to assess the Eyelid - Meibomian glands, Eyelid Erythema, Eyelid Oedema, Lashes, Conjunctiva Erythema, Lens, Iris, Anterior Chamber, Corneal transparency, Corneal neovascularization;

* Tear film break-up time (TFBUT);

* Corneal fluorescein surface staining (scored using the Oxford scale);

* Schirmer-I test (without anaesthesia) values;

* Intraocular Pressure (IOP)

All parameters will be evaluated at screening visit, baseline (day 1), visit 3 (day 14±2) and visit 4 (day 28±4) and at follow-up (final visit) at least 7 days but not more than 9 days after the last treatment.

The results for both the SANDE questionnaire and adverse events are reported at the patient level, without distinguishing between Study Eye and Non-Study Eye. This approach reflects the overall condition and experiences of the patient rather than attributing outcomes to individual eyes.

The Study Eye was identified as the eye with the worst overall tolerability score at Visit 2 (Day 1).

Detailed Description: This study is a multicenter, randomized, double-masked, controlled, non-inferiority study to evaluate tolerability, safety and efficacy of Lubricin eye drops versus sodium hyaluronate eye drops (Ocuyal®) administered four times a day for 4 weeks and 1 week follow-up in subjects with moderate dry eye.

Recruitment & Eligibility

Status: COMPLETED

Sex: All

Target Recruitment: 56

Inclusion Criteria

To be checked at the screening visit (V1) from day -14 to day -8 days before run-in period and confirmed at baseline visit (V2):

Subjects 18 years of age or older.
Subjects with moderate dry eye characterized by tear film osmolarity > 312 mOsm
Subjects with both VAS for frequency and severity of symptoms, SANDE items, at screening & baseline > 25 mm (SANDE overall score > 25 mm).
Subjects with moderate dry eye characterized by at least one eye with signs and symptoms of moderate dry eye (grade 2 or 3 of the 2007 DEWS report)
Subjects diagnosed with dry eye from at least 6 months (current use or recommended use of artificial tears/lubricants for the treatment of Dry Eye)
Best corrected distance visual acuity (BCDVA) score of ≥ 0.1 decimal units in both eyes at the time of study enrolment.
The Informed Consent form approved by the Ethics Committees should be signed by the subject before any study procedures.

Exclusion Criteria

Evidence of an active ocular infection in either eye
History or presence of ocular surface disorders not related to dry eye in either eye
History or evidence of eyelid abnormality in either eye
Use of topical cyclosporine, topical corticosteroids or any other topical medication for the treatment of dry eye in either eye within 30 days of study enrolment
History of any ocular surgery (including laser or refractive surgical procedures) in either eye within the 90 days before study enrolment. Ocular surgery will not be allowed during the study treatment period and elective ocular surgery procedures should not be planned during the duration of the follow-up period
Presence or history of any ocular or systemic disorder or condition that might significantly hinder the efficacy of the study treatment or its evaluation, could possibly interfere with the interpretation of study results, or could be judged by the investigator to be incompatible with the study visit schedule or conduct of trail procedures (e.g. ocular trauma, progressive or degenerative corneal conditions, uveitis, systemic vasculitis, collagen vascular diseases, poorly controlled diabetes, autoimmune disease, systemic infection.)
Known hypersensitivity to one of the components of the test device or the comparator
Participation in another clinical study at the same time as the present study or within 90 days of baseline visit
History of drug, medication or alcohol abuse or addiction.
Females of childbearing potential (those who are not surgically sterilized or post-menopausal for at least 1 year) are excluded from participation in the study if they meet any one of the following conditions:
- are currently pregnant or,
- have a positive result on the urine pregnancy test at the Screening/Baseline Visit or,
- intend to become pregnant during the study treatment period or,
- are breast-feeding or,
- not willing to use highly effective birth control measures, such as: Hormonal contraceptives - oral, implanted, transdermal, or injected and/or mechanical barrier methods - spermicide in conjunction with a barrier such as a condom or diaphragm or IUD during the entire course of and 30 days after the study treatment periods.

Study & Design

Study Type: INTERVENTIONAL

Study Design: PARALLEL

Arm && Interventions

Group	Intervention	Description
Sodium Hyaluronate	Sodium Hyaluronate	Sodium hyaluronate 0.13% eye drops
Lubricin	Lubricin	Lubricin 150 µg/ml eye drops solution

Primary Outcome Measures

Name	Time	Method
Change From Baseline (V2) in Frequency and Severity of Dry Eye Symptoms (SANDE) Questionnaire Scores at Day 28±4 (End of Treatment)	Visit 3 - Day 14±2, Visit 4 - Day 28±4, Visit 5 - Final visit/Follow up - Day 31- 41	The SANDE (Symptom Assessment in Dry Eye) questionnaire was used to evaluate both dry eye frequency and severity using a 100 mm VAS line, representing ocular dryness and/or irritation at subject's level, according to their own perception, irrespective of the eye being or not the study eye, as per study Protocol. SANDE scores ranged from 0 (best condition) to 100 (worst condition) for both severity and frequency. The VAS score was determined - in millimeters - by measuring from the left-hand end to the marked point on the VAS line. SANDE OVERALL VAS score was calculated considering the mean and the SD of the "Change from Baseline" values at Day 14±2, Day 28±4 and Day 31-41, both for frequency and severity, and then calculated as square-root of the product of the two item score. Results are reported at the patient level, rather than focusing on a single eye, as the SANDE score assesses overall dry eye symptoms rather than eye-specific effects, as per study protocol.

Secondary Outcome Measures

Name	Time	Method
Treatment-emergent Adverse Events (TEAEs), Including Adverse Device Effects (ADEs)	From Visit 2 (Day 1)" i.e., the day of the first IMD administration to Visit 5 - Final visit/Follow up - Day 31- 41	Occurrence of Treatment-emergent adverse events (TEAEs), including adverse device effects (ADEs) assessed throughout the study after the first IMD administration.
Changes From Baseline (Visit 2, Day 1) in Ocular Tolerability Using a Visual Analogue Scale (VAS)	Visit 3 - Day 14±2, Visit 4 - Day 28±4, Visit 5 - Final visit/Follow up - Day 31- 41	A global ocular tolerability score was determined using a 100 mm Visual Analogue Scale (VAS) on which 0 meant no symptoms and 100 meant the worst possible discomfort. This evaluation was to be performed before any ophthalmic assessment at each scheduled visit. Specific ocular symptoms measured with the VAS included: foreign body sensation, burning/stinging, itching, pain, sticky feeling, blurred vision, photophobia. The patients evaluated their symptoms using the VAS giving the value they were feeling from none to an extreme value. The VAS scale was a straight horizontal line of fixed length (100 mm). The ends were defined as extreme limits of the parameter.
Change From Baseline in Tear Film Osmolarity	Visit 3 - Day 14±2, Visit 4 - Day 28±4, Visit 5 - Final visit/Follow up - Day 31- 41	Tear film osmolarity as a marker of tear film solute content was performed with a TearLab Osmolarity System. The concentration of the tears was assessed in both eyes before the instillation of any dilating or anaesthetic drops. The tear fluid was collected onto the bottom tip of the test card by passive capillary action. After a successful tear collection, the Pen was docked into the Reader, which showed the quantitative tear film osmolarity result in mOsm/L on the liquid crystal display. Normal Patients: 275-316 mOsms/L (mean 302 mOsms/L), Dry Eye Disease Patients: \> 316 mOsms/L. The higher the score the worst the outcome.
Change From Baseline in Best Corrected Distance Visual Acuity (BCDVA) - ETDRS Score	Visit 3 - Day 14±2, Visit 4 - Day 28±4, Visit 5 - Final visit/Follow up - Day 31- 41	Best corrected visual acuity (BCDVA) was determined by careful refraction according to the standard protocol for refraction. Chart 1 was used for testing the VA of the right eye; Chart 2 for the left eye; and Chart R for refraction only. Retroilluminated standard Early Treatment of Diabetic Retinopathy Study (ETDRS) charts were used. They had 5 Sloan letters on each line of equal difficulty, and there was a geometric progression in letter size from line to line. VAS awarded one point for every letter correctly guessed. A distance of 4 meters was required between the subject's eyes and the VA chart. When a subject cannot read at least 20 letters on the chart at 4 meters, the subject was tested at 1 meter. If 20 or more letters were read at 4 meters, the VAS for that eye was recorded as the number of letters correct at 4 meters plus 30. Otherwise, the VAS was the number of letters read correctly at 1 meter plus the number read at 4 meters. The higher the score the better the outcome.
Change From Baseline in Permanence of Lubricin on the Ocular Surface - Tear Film Break-up Time (TFBUT)	Visit 3 - Day 14±2, Visit 4 - Day 28±4, Visit 5 - Final visit/Follow up - Day 31- 41	TFBUT was measured by determining the time to tear break-up. The TFBUT test was performed after instillation of 5 μl of 2% preservative-free sodium fluorescein solution into the inferior conjunctival cul-de-sac of each eye. With the aid of a slit lamp at 10X magnification using cobalt blue illumination, the examiner monitored the integrity of the tear film, noting the time it took to form lacunae (clear spaces in the tear film) from the time that the eye was opened after the last blink. This measurement was performed within 10 seconds maximum. The TFBUT was measured twice during the first minute after the instillation of the fluorescein. If the 2 readings differed by more than 2 seconds, a third reading was taken. The TFBUT value was the average of the 2 or 3 measurements. Generally, a TFBUT value of 10-35 seconds was considered normal. A value of less than 10 seconds was usually suspicious and may indicate tear film instability. The higher the value, the better the outcome.
Change From Baseline in Slit Lamp Examination (SLE) Values	Visit 3 - Day 14±2, Visit 4 - Day 28±4, Visit 5 - Final visit/Follow up - Day 31- 41	The Slit Lamp Examination was used to examine the structures of the eye (eyelids, lashes, conjunctiva, cornea, lens, iris and anterior chamber) according to different scales: Eyelid - Meibomian glands (from 0-none to 3-severe), Eyelid - Erythema (from 0-none to 4-very severe), Eyelid - Oedema (from 0-none to 4-very severe), Lashes (0-normal 1-abnormal), Conjunctiva - Erythema (from 0-none to 3-severe), Conjunctiva - Oedema (from 0-none to 4-very severe), Lens (to 0-no opacification to 3-severe opacification), Iris (0-normal 1-abnormal), Anterior chamber inflammation (from 0-none to 3-severe), Cornea transparency (from 0-completely transparent to 4-complete cornea opacity), Cornea neovascularization (0-absence of vascularization to 4- neovascularization between 270° and 360°). The higher the score the worse the outcome. There was not a total score.
Change From Baseline in Corneal Fluorescein Surface Staining (Oxford Score)	Visit 3 - Day 14±2, Visit 4 - Day 28±4, Visit 5 - Final visit/Follow up - Day 31- 41	The corneal fluorescein staining was graded by using the Oxford scheme to assess cornea and conjunctiva epithelium damage. The Oxford grading scale divides corneal staining into six groups according to severity from 0 (absent) to 5 (severe). The examiner compared the overall appearance of the patient's corneal staining with a reference figure, simulating the pattern of staining encountered in dry eye disease. No attempt was made to count the dots or to assess the position or confluence of the dots. The examiner selected the appropriate grade that best represented the state of corneal staining. The grading system recommended by NEI divides the cornea into five zones (central, superior, temporal, nasal, and inferior) and for each zone, the severity of corneal fluorescein staining is graded on a scale from 0 to 3 based on reference figures. Therefore, the maximum score (worst outcome) was 15, the minimum (best outcome) was 0.
Change From Baseline in Schirmer's Test Type I (Without Anaesthesia)	Visit 3 - Day 14±2, Visit 4 - Day 28±4, Visit 5 - Final visit/Follow up - Day 31- 41	The Schirmer test Type I (without anaesthesia) was performed to measure aqueous tear secretion prior to the instillation of any dilating or anaesthetic eye drops. The rounded bent end of a sterile strip was inserted into the lower conjunctival sac over the temporal one-third of the lower eyelid margin. After 5 minutes had elapsed, the Schimer's test strip was removed and the length of the tear absorption on the strip was measured (millimeters/5 minutes). The longer the wetted length, the healthier the status of the eye.
Change From Baseline in Intraocular Pressure (IOP)	Visit 3 - Day 14±2, Visit 4 - Day 28±4, Visit 5 - Final visit/Follow up - Day 31- 41	The IOP (intraocular pressure) of the eye was determined by the balance between the amount of aqueous humor that the eye marked and ease with which it leaved the eye. IOP was performed using Goldmann applanation tonometry after the instillation of a topical anaesthetic. The Goldmann applanation tonometer measured the force necessary to flatten a corneal area of 3.06 mm diameter. At this diameter, the resistance of the cornea to flattening was counterbalanced by the capillary attraction of the tear film meniscus for the tonometer head. The IOP (in mm Hg) equals the flattening force (in grams) multiplied by 10. IOP was measured in both eyes after completion of all SLEs to avoid potential interference with the other evaluations. Both eyes were tested. Normal eye pressure was between 10 to 21 mmHg. High ocular pressure was greater than 21 mmHg.

Trial Locations

Locations (2): Azienda OspedalieroUniversitaria "Policlinico Vittorio Emanuele" Presidio Ospedaliero S.Marta Clinica oculistica
🇮🇹
Catania, Italy
Ambulatorio Studio delle Malattie della Superficie Oculare, Unità Operativa Complessa di Oftalmologia, Azienda Ospedaliero Universitaria di Messina
🇮🇹
Messina, Italy