Endolaserless Vitrectomy With Intravitreal Aflibercept Injection for Proliferative Diabetic Retinopathy-Related Vitreous Hemorrhage (LASER LESS TRIAL)
Trial Snapshot
- Phase
- Phase 1
- Sponsor
- Enrollment
- 24
- Locations
- 1
- Primary Endpoint
- • Ocular and systemic safety evaluation for adverse events at any time point through 52 weeks:
Study Overview
Brief Summary
This is a phase I/II open label, randomized, interventional clinical trial. Study eyes will receive one preoperative intravitreal aflibercept injection (IAI) <21 days but >7 days prior to vitrectomy and one intraoperative IAI at end of surgery followed by randomization in a 1:1 ratio into either 4 mandatory postoperative q4weeks IAI followed by mandatory q8 weeks IAI for 52 weeks follow-up (q8 week Group) or 2 mandatory postoperative q4weeks IAI followed by mandatory q16 weeks IAI for 52 weeks follow-up (q16 week Group).
Detailed Description
This is a phase I/II open label, randomized, interventional clinical trial. Study eyes will receive one preoperative intravitreal aflibercept injection (IAI) <21 days but >7 days prior to vitrectomy and one intraoperative intravitreal aflibercept at end of surgery followed by randomization in a 1:1 ratio into either 4 mandatory postoperative q4weeks IAI followed by mandatory q8 weeks IAI for 52 weeks follow-up (q8 week Group) or 2 mandatory postoperative q4weeks IAI followed by mandatory q16 weeks IAI for 52 weeks follow-up (q16 week Group).
Follow-up visits occur 1 day and 1-2 weeks, and 4 weeks postoperatively and then every 4 weeks from the first postoperative IAI for 52 weeks. One preoperative visit and every postoperative visit (except day one postoperatively) will include ETDRS Best Corrected Visual Acuity (BCVA), Intraocular Pressure (IOP) measurement, Slit lamp biomicroscopy, Indirect ophthalmoscopy, Heidelberg Spectralis Spectral Domain Optical Coherence Tomography (SD-OCT) (no OCT for preoperative visit) and evaluation for systemic and ocular adverse events. Seven standard field photographs and Optos wide-field fluorescein angiography will be performed at postoperative visits at 4, 16, 28, 40,and 52 weeks. Humphrey visual field (HVF) testing (30-2 and 60-4 test patterns) will be performed at postoperative visits at 4 and 52 weeks. Preoperative B scan echography will be required standard of care(SOC) to assess for macular traction, non-macular traction, retinal detachment and vitreous hemorrhage(VH). Identification of traction macular detachment will exclude the patient from the study.
Study Design
- Study Type
- Interventional
- Allocation
- Randomized
- Intervention Model
- Parallel
- Primary Purpose
- Treatment
- Masking
- None
Eligibility Criteria
- Ages
- 18 Years to — (Adult, Older Adult)
- Sex
- All
- Accepts Healthy Volunteers
- Yes
Inclusion Criteria
- •Adults age >18 years with Diabetes Mellitus
- •PDR- related vitreous hemorrhage and not of another cause
- •BCVA Vision LP or better
- •Investigator determination that vitrectomy indicated for PDR-related vitreous hemorrhage
- •Willing and able to comply with clinic visits and study-related procedures
- •Provide HIPPA and signed informed consent prior to any study procedures
Exclusion Criteria
- •A condition per investigator opinion, would preclude participation in the study (unstable medical status, cardiovascular disease, glycemic control, inability to follow up etc.)
- •Participation in an investigational trial within 30 days of enrollment
- •Known allergy to IAI
- •Systemic anti-VEGF or pro-VEGF treatment within 4 months of enrollment
- •For women of childbearing age, pregnant or lactating or intending to become pregnant within the next 3 years
- •History of PRP or peripheral retinal cryopexy or peripheral retinopexy for any reason in the study eye
- •History of vitrectomy in the study eye
- •History or evidence for rhegmatogenous retinal detachment in the study eye
- •Evidence of traction retinal detachment involving or threatening central macula in the study eye
- •Exam evident of external ocular infection (i.e. conjunctivitis, significant blepharitis, chalazion etc)
- •Intravitreal anti-VEGF injection in the study eye <4weeks from enrollment.
- •Pregnant or breast-feeding women
- •Sexually active men* or women of childbearing potential** who are unwilling to practice adequate contraception during the study (adequate contraceptive measures include stable use of oral contraceptives or other prescription pharmaceutical contraceptives for 2 or more menstrual cycles prior to screening; intrauterine device [IUD]; bilateral tubal ligation; vasectomy; condom plus contraceptive sponge, foam, or jelly, or diaphragm plus contraceptive sponge, foam, or jelly) *Contraception is not required for men with documented vasectomy. **Postmenopausal women must be amenorrheic for at least 12 months in order not to be considered of child bearing potential. Pregnancy testing and contraception are not required for women with documented hysterectomy or tubal ligation.
Arms & Interventions
IAI q8 week Group
Eyes will be randomized on the day of endolaserless vitrectomy surgery or first postoperative 1-2 week visit to a group ("q8 week Group") where 4 additional mandatory postoperative q4weeks IAI followed by mandatory q8 weeks IAI for 52 weeks follow-up. Starting at week 20 in the q8week group eyes may be eligible to receive additional 2mg IAI (intravitreal aflibercept) (monthly) treatment
Intervention: Aflibercept (Drug)
IAI q8 week Group
Eyes will be randomized on the day of endolaserless vitrectomy surgery or first postoperative 1-2 week visit to a group ("q8 week Group") where 4 additional mandatory postoperative q4weeks IAI followed by mandatory q8 weeks IAI for 52 weeks follow-up. Starting at week 20 in the q8week group eyes may be eligible to receive additional 2mg IAI (intravitreal aflibercept) (monthly) treatment
Intervention: Endolaserless Vitrectomy (Procedure)
IAI q16 week Group
Eyes will be randomized on the day of endolaserless vitrectomy surgery or first postoperative 1-2 week visit to a group (q16week Group) where 2 additional mandatory postoperative q4weeks IAI will be followed by mandatory q16weeks IAI for 52 weeks follow-up. Starting at week 12 in the q16 group, eyes may be eligible to receive additional 2mg IAI (intravitreal aflibercept) (monthly) treatment.
Intervention: Aflibercept (Drug)
IAI q16 week Group
Eyes will be randomized on the day of endolaserless vitrectomy surgery or first postoperative 1-2 week visit to a group (q16week Group) where 2 additional mandatory postoperative q4weeks IAI will be followed by mandatory q16weeks IAI for 52 weeks follow-up. Starting at week 12 in the q16 group, eyes may be eligible to receive additional 2mg IAI (intravitreal aflibercept) (monthly) treatment.
Intervention: Endolaserless Vitrectomy (Procedure)
Outcomes
Primary Outcomes
• Ocular and systemic safety evaluation for adverse events at any time point through 52 weeks:
Time Frame: Through 52 weeks from Baseline
Examples include worsened acuity \>30 letters, rhegmatogenous or tractional retinal detachment, endophthalmitis, new or increased vitreous hemorrhage, cataract progression or surgery, need for additional vitrectomy or scleral buckle, development of new DME after OCT documentation of absence of DME, systemic thromboembolic events, deaths and systemic serious adverse events at any time point through week 52.
Secondary Outcomes
- Mean change in BCVA letter score(52 weeks from Baseline)
- Proportion of eyes with unchanged, worsened, or improved fluorescein angiographic macular leakage(Through 52 weeks from Baseline)
- Proportion of eyes requiring PRP or retinopexy(Through 52 weeks from Baseline)
- Mean BCVA letter score(52 weeks from Baseline)
- Proportion of eyes with absence of active neovascularization(Through 52 weeks from Baseline)
- Mean cumulative score and change for the combined 30-2 and 60-4 HVF test(Through 52 weeks from Baseline)
- Proportion of enrolled eyes requiring intraoperative endolaser in a PRP pattern at the time of initial vitrectomy(Through 52 weeks from Baseline)
- Proportion of eyes with progression of PDR(Through 52 weeks from Baseline)
- Proportion of eyes with OCT CSF thickness <300um(Through 52 weeks from Baseline)
- Proportion of eyes with unchanged, worsened, or improved fundus photographic DME appearance(Through 52 weeks from Baseline)
- Proportion of eye with progression of PDR requiring rescue PRP standard of care(Through 52 weeks from Baseline)
- Proportion of eyes with unchanged, worsened, or improved fluorescein angiographic neovascularization(Through 52 weeks from Baseline)
- Proportion of eyes requiring additional IAI other than mandatory injections(Through 52 weeks from Baseline)
- Proportion of eyes requiring additional vitrectomy(Through 52 weeks from Baseline)
- Mean OCT CSF thickness(Through 52 weeks from Baseline)
- Proportion of eyes with absence of Optos widefield fluorescein angiographic macular leakage(Through 52 weeks from Baseline)
Investigators
Dennis M. Marcus, M.D.
Principal Investigator
Southeast Retina Center, Georgia