TIMBETASIN ACETATE for Neurotrophic keratitis

Inclusion criteria

• {"criterion_text":"- Be male or female of any race, at least 18 years of age\n- Male subjects fulfilling one of the following criteria: 1.Male subjects with pregnant or non-pregnant women of childbearing potential (WOCBP) partners: they must be willing to use a male condom from the time of signing of the informed consent and until 12 weeks after last dose of the study product (and should be advised of the benefit for a female partner to use highly effective method of contraception, as a condom may break or leak); OR 2. Male subjects with partners not of childbearing potential (contraception is not required in this case); OR 3. Non-fertile male subjects (contraception is not required in this case).\n- Have provided written informed consent\n- Be able and willing to follow instructions, including participation in all study assessments and visits\n- At the time of Visit 1, have documentation or observation of a Persistent Epithelial Defect (PED) in one or both eyes, defined as a corneal epithelial defect that has not resolved after 1 week of conventional treatment using non-preserved ocular lubricants, non-preserved topical ophthalmic antibiotics, oral doxycycline, patching, amniotic membrane, serum tears, and/or therapeutic contact lenses; Note that re-screened subjects who failed conventional treatment needs to go through 1 week of conventional treatment again right before Visit 1\n- Have stage 2 or 3 neurotrophic keratopathy (Mackie Classification) in at least one eye of which the longest dimension (length or width) of the defect measures a minimum length of 1 mm (study eye) and which is confirmed by the Investigator not to be simply superficial punctate keratitis, at Visit 1\n- Have evidence of decreased corneal sensitivity ≤40 mm (average of 3 measurements) within the area of the PED or corneal ulceration and outside of the area of the defect within 3 mm of the central cornea using the Cochet-Bonnet aesthesiometer at Visit 1\n- Have BCVA score ≤75 letter counts in the study eye based on the ETDRS chart\n- Have at least one eye (the same eye) satisfy all criteria for d, e, f, g above\n- Female subjects not pregnant or breastfeeding fulfilling one of the following criteria: 1.\twoman of childbearing potential (WOCBP) using and agree to continue using a contraceptive method that is highly effective (with a failure rate of <1% per year and, preferably, with low user dependency) for at least 4 weeks prior to the first dose of study product and until 12 weeks after last dose, and have a negative urine pregnancy test during screening; OR 2.\twoman of nonchildbearing potential defined as physiologically incapable of becoming pregnant (i.e., permanently sterile or post-menopausal)"}

Exclusion criteria

• {"criterion_text":"- Have any condition that, in the opinion of the Investigator, would interfere with the subject’s ability to complete the study, would interfere with the interpretation of safety or efficacy, or would present an undue risk to the subject. In cases of uncertainty, the Investigator should contact the medical monitor for clarification\n- Have received Botox® (OnabotulinumtoxinA) injection to induce blepharoptosis in the study eye within 90 days prior to Visit 1\n- Have used contact lenses (for therapeutic (including bandage contact lenses) or refractive correction) in the study eye within 14 days prior to Visit 1, or anticipate use of contact lenses during the study period. Note that consented subjects will be instructed to discontinue use of contact lenses for the study eye throughout the study\n- Have used OxervateTM (cenegermin-bkbj) in the study eye within the past 2 months\n- Anticipate use of serum tears in the study eye during the study period. Note that use of preservative free artificial tears for at least two weeks at the time of screening may continue throughout the study at the discretion of the Investigator\n- Have a presence or history of any ocular or systemic disorder or condition that might 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 (e.g., progressive or degenerative corneal or retinal conditions, optic neuritis, systemic infection, neoplastic diseases, poorly controlled diabetes)\n- Have used drugs which affect lacrimation or function of the trigeminal nerve (e.g., neuroleptics, antipsychotics and antihistamine drugs including oral pilocarpine and cevimeline, cholinergics including nasal varenicline, cytotoxic cancer therapy) within 30 days of Visit 1 or anticipate use of these systemic medication throughout the course of the study\n- Have any autoimmune or chronic inflammatory disease that might have hindered the efficacy of the study treatment or its evaluation, could possibly have interfered with the interpretation of study results, or could have been judged by the Investigator to be incompatible with the study visit schedule or conduct (e.g., psoriasis, systemic lupus erythematosus, giant cell arteritis, polyarteritis nodosa, relapsing polychondritis, scleroderma, Behcet’s disease, reactive arthritis, inflammatory bowel disease, ankylosing spondylitis, Graves' disease)\n- Be on topical (ocular/nasal) immunosuppressive therapy within 30 days prior to screening or is likely to require this during the course of the study; Note that only Systemic and dermal immunosuppressive therapy (including inhalation) with a stable dose for at least two weeks at the time of Visit 1 is permitted\n- Have a known allergy and/or sensitivity to the study product or its components, and history of allergy/hypersensitivity to fluorescein or to any of the excipients\n- Have a history of drug, medication or alcohol abuse or addiction in past 2 years\n- Have any clinically significant slit-lamp findings in the study eye that in the opinion of the Investigator may interfere with the study parameters; Examples include stromal keratitis, numerous punctate keratitis or pterygium, and thin cornea\n- Have participated in an investigational drug study within 30 days prior to screening. In addition, it is necessary that at least 5 half-lives of the previously administered investigational drug have elapsed by Visit 1. Observational studies are not exclusionary\n- Have fever, inflammation, or systemic signs of illness suggestive of systemic or invasive infection, including COVID-19 or a positive test for COVID-19, within 2 weeks prior to first dose of study drug\n- Have been previously randomized in RGN-259 (SEER-3) clinical study\n- Clinically significant active blepharitis, meibomian gland dysfunction (MGD), or lid margin inflammation, or active ocular allergy in study eye that requires treatment that in the opinion of the Investigator may interfere with study parameters\n- Have a Unanesthetized Schirmer’s test score of ≤3 mm at Visit 1\n- Have a lid function abnormality (ex. Lagophthalmos) which, in the opinion of the Investigator, is the primary cause of the persistent epithelial defect\n- Have an ongoing ocular infection (bacterial, viral or fungal) or active inflammation (e.g., follicular conjunctivitis) in the study eye. Note that subjects with active stromal herpetic keratitis will also be excluded\n- History of any ocular surgery in the study eye (including laser or refractive surgical procedures) within the three months before study enrollment. Ocular procedures that are the cause of NK that occurred within 3 months prior to Visit 1 are not exclusionary\n- Prior surgical procedure(s) for the treatment of NK (e.g., tarsorrhaphy, conjunctival flap, etc.) within the three months before study enrollment with the exception of amniotic membrane transplantation. Subjects previously treated with amniotic membrane transplantation may only be enrolled after the membrane has disappeared within the area of the PED or at least four weeks after the date of the amniotic membrane transplantation procedure\n- Have any planned ocular surgical procedures or are likely to require ocular surgery for the study eye during the study"}

Primary endpoints

• {"endpoint_text":"- Percentage of subjects achieving complete healing (defined as 0 mm lesion size) of the Persistent Epithelial Defect (PED) at Visit 5 (Day 29) determined by corneal fluorescein staining as measured by the Central Reading Center. The size of the lesion is based on the longest dimension (length or width) of the defect","definition_or_measurement_approach":"Complete healing defined as 0 mm lesion size; determined by corneal fluorescein staining measured by the Central Reading Center; lesion size based on longest dimension (length or width) of the defect; assessed at Visit 5 (Day 29)."}

Secondary endpoints

• {"endpoint_text":"- Percentage of subjects achieving complete healing (defined as <0.5 mm lesion size) of the PED determined by corneal fluorescein staining as measured by the Investigator at Visit 5 (Day 29)\n- Percentage of subjects achieving complete healing (defined as 0 mm lesion size) of the PED determined by corneal fluorescein staining as measured by the Central Reading Center at Visits 2, 3, 4, 6, and 7\n- Percentage of subjects achieving complete healing (defined as <0.5 mm lesion size) of the PED determined by corneal fluorescein staining as measured by the Investigator at Visits 2, 3, 4, 6, and 7\n- Percentage change from baseline of lesion size determined by corneal fluorescein staining as measured by the Central Reading Center at Visit 2-7 (measurements of greatest dimension of fluorescein staining)\n- Percentage change from baseline of lesion size determined by corneal fluorescein staining as measured by the Investigator at Visit 2-7 (measurements of greatest dimension of fluorescein staining)\n- NK stage (Mackie Classification) determined by corneal fluorescein staining as measured by the Investigator at Visits 2-7\n- Visual Acuity determined by Early Treatment of Diabetic Retinopathy Study (ETDRS) at Visits 2-7\n- Corneal sensitivity inside the lesion determined by Cochet-Bonnet aesthesiometer at Visits 2-7\n- Change from baseline in Ocular discomfort, Photophobia, Foreign body sensation, Burning and Dryness using VAS at Visit 3 and Visit 5.\n- Change from baseline in Frequency of symptoms and severity of symptoms in SANDE questionnaire at Visit 3 and Visit 5.\n- Proportion of subjects achieving complete healing (defined as 0 mm lesion size) of the PED determined by corneal fluorescein staining as measured by the Central Reading Center over multiple visits from visit 2 to visit 5\n- Proportion of subjects achieving complete healing (defined as <0.5 mm lesion size) of the PED determined by corneal fluorescein staining as measured by the Investigator over multiple visits from visit 2 to visit 5","definition_or_measurement_approach":"Endpoints measured by corneal fluorescein staining (Central Reading Center and Investigator assessments), ETDRS for visual acuity, Cochet-Bonnet aesthesiometer for corneal sensitivity, VAS for ocular symptoms, SANDE questionnaire for symptom frequency/severity; specific visits as stated (Visits 2-7, Visit 3 and Visit 5, Visit 5 Day 29 etc.)."}

Spain

Earliest CTIS Part Ii Submission Date

03-02-2025

Latest Decision Or Authorization Date

24-04-2026

Processing Time Days

445

Number Of Sites

4

Number Of Participants

10

Italy

Earliest CTIS Part Ii Submission Date

11-03-2025

Latest Decision Or Authorization Date

27-04-2026

Processing Time Days

412

Number Of Sites

6

Number Of Participants

10

Poland

Earliest CTIS Part Ii Submission Date

10-03-2025

Latest Decision Or Authorization Date

24-04-2026

Processing Time Days

410

Number Of Sites

1

Number Of Participants

15

Primary sponsor

Full Name

Regentree LLC

Organisation Type

Pharmaceutical company

Country Of Registered Address

United States

Contract research organisations

Name

Clinchoice S.r.l.

Responsibilities

codes: 1,10,5,8

Third parties

• {"country":"France","full_name":"C 2 R","duties_or_roles":"Support for reimbursement of patients","organisation_type":"Pharmaceutical company"}
• {"country":"Portugal","full_name":"Association For Innovation And Biomedical Research On Light And Image","duties_or_roles":"","organisation_type":"Laboratory/Research/Testing facility"}
• {"country":"United States","full_name":"Xerimis Inc.","duties_or_roles":"","organisation_type":"Pharmaceutical company"}
• {"country":"Netherlands","full_name":"Xerimis B.V.","duties_or_roles":"","organisation_type":"Pharmaceutical company"}
• {"country":"Italy","full_name":"Clinchoice S.r.l.","duties_or_roles":"","organisation_type":"Pharmaceutical company"}