Intravitreal fluocinolone acetonide 0.19 mg (ILUVIEN®) in patients with non-infectious uveitis: real-world effectiveness and safety outcomes at 12 months

Efficacy and Safety of Fluocinolone Acetonide 0.19 mg Intravitreal Implant for the Treatment of Non-Infectious Uveitis: A Systematic Review of Real-World Evidence

This systematic review evaluates the real-world efficacy and safety of the 0.19 mg fluocinolone acetonide (FAc) sustained-release intravitreal implant for treating non-infectious uveitis affecting the posterior segment of the eye (NIU-PS). Following PRISMA guidelines, a search was conducted in PubMed, Embase and Web of Science, with the latest update on September 20, 2024. Twelve real-world studies involving a total of 382 patients (514 eyes) were included in the review. Compared to baseline, the studies consistently showed reduced mean central retinal thickness for up to 36 months post-FAc implantation, while mean visual acuity was stable or significantly improved. Intraocular inflammation, as per the Standardization of Uveitis Nomenclature grading system, was persistently absent or improved, with evidence extending to 12 months following implantation. While FAc generally showed potential to reduce or maintain systemic immunosuppressive treatments, this effect was not consistently observed, particularly in cases involving choroidal inflammation. Local rescue treatment was used in up to 24% of eyes. Mean intraocular pressure remained stable for 36 months with up to 38.5% of eyes requiring either supplemental or initial IOP-lowering medication. Limited data was available on cataract development. A few cases of hypotony as well as one case of retinal detachment were observed. Overall, current real-world evidence aligns with clinical trial findings, suggesting that the 0.19 mg FAc implant is an effective adjunctive maintenance treatment for NIU-PS with a consistent safety profile. Further studies are needed to refine treatment guidelines.

A Meta-Analysis of the Efficacy and Safety of the 0.19 mg Fluocinolone Acetonide Implant in Non-Infectious Uveitis

Background/Objectives: The fluocinolone acetonide implant (FAI) is an intravitreal corticosteroid implant designed to have a therapeutic effect lasting up to 3 years. We performed a meta-analysis to investigate the efficacy and safety of the FAI (0.19 mg, releasing at 0.2 μg/day) in patients with non-infectious uveitis. Methods: The PubMed, EMBASE, and Cochrane Library databases were last searched on 6 September 2024. Studies comparing FAI with sham injections were investigated. The primary outcome was the recurrence of uveitis. Secondary outcomes included visual acuity, intraocular pressure (IOP), and occurrence of cataracts. Results: Significantly more patients in the FAI group experienced no uveitis recurrence for up to 36 months compared to the sham group, with a relatively lower number of recurrences. Systemic adjuvant therapy was similar between groups, while fewer patients required local rescue injections in the FAI group (95% confidence interval (CI): -2.91 to -1.70). Visual acuity changes and the proportion of eyes with ≥15 letters gain were not significantly different between the groups. More patients needed cataract surgery in the FAI group (95% CI: 0.68-1.96). No differences were observed in IOP change, final IOP, or treatment-requiring events related to an increased IOP. However, more subjects experienced events of IOP > 25 mmHg with the FAI (95% CI: 0.73 to 2.14). Conclusions: The 0.19 mg FAI was effective in preventing uveitis recurrence, and reduced the need for local injections. No significant impacts were noted in terms of systemic therapy, visual improvement, or most IOP-related complications.

Intravitreal steroid implants in the management of noninfectious intermediate and posterior uveitis

The management of intermediate and posterior uveitis poses a significant challenge of achieving adequate drug concentrations in the posterior segment over the chronic nature of the disease. Systemic agents seldom reach effective drug levels, and even with low maintenance or tapering doses, it is hard to avoid systemic toxicity. The use of intravitreal and periocular injections is often unable to prevent recurrences due to their short half-life. Since the emergence of intravitreal implants (Vitrasert, Retisert), it has become possible to circumvent these therapeutic challenges. A detailed review in the PubMed index yielded 155 articles, of which 22 were analyzed based on exclusion criteria. A recent shift from surgically sutured to minimally invasive injectable implants mainly indicated for noninfectious uveitis is evident from the literature. This review article also provides insights into dexamethasone (Ozurdex) and recent fluocinolone acetonide (Yutiq, Iluvien) implants with particular emphasis on their improved safety and efficacy. Dexamethasone implants favor the therapeutic goal of prevention of recurrences, whereas the use of fluocinolone implants helps to attain better visual outcomes due to their longer duration of action. Thus, the review provides recent literature supporting the role and indication of sustained release intravitreal implants in the management of noninfectious intermediate and posterior uveitis.

Fluocinolone acetonide 0.2 µg/day intravitreal implant in non-infectious uveitis affecting the posterior segment: EU expert user panel consensus-based clinical recommendations

BACKGROUND

Non-infectious uveitis affecting the posterior segment of the eye (NIU-PS) is an inflammatory disease, which can significantly impair visual acuity if not adequately treated. Fluocinolone-acetonide sustained-release-0.2 µg/day intravitreal (FAc) implants are indicated for prevention of relapse in recurrent NIU-PS. The aim here was to provide treating clinicians with some consensus-based-recommendations for the clinical management of patients with NIU-PS with 0.2 µg/day FAc implants.

METHODS

A European-clinical-expert-group agreed to develop a consensus report on different issues related to the use of FAc implants in patients with NIU-PS.

RESULTS

The Clinical-expert-panel provided specific recommendations focusing on clinical presentation (unilateral/bilateral) of the NIU-PS; systemic involvement of NIU-PS and the lens status. Treatment algorithms were developed; one that refers to the management of patients with NIU-PS in clinical practice and another that establishes the best clinical scenarios for the use of FAc implants, both as monotherapy and as adjuvant therapy. Additionally, the Clinical-expert-panel has provided recommendations about the use of the FAc implants in a clinical-setting. The Clinical-expert-panel also considered the safety profile of FAc implants and their possible implications in the daily practice.

CONCLUSIONS

As more clinical experience has been gained using FAc implants, it was necessary to update the clinical recommendations that guide patient management in the clinic. The current consensus document addresses relevant issues related to the use of FAc implants on different types of patients with various etiologies of NIU-PS, and was conducted to standardize approaches to help specialists obtain better clinical outcomes.

Fluocinolone Acetonide Implant for Uveitis: Dissecting Responder and Non-Responder Outcomes at a Tertiary Center

Macular edema (ME) remains a primary cause of visual deterioration in uveitis. Visual acuity (VA) can often be maintained using corticosteroid depot systems. This study evaluated the efficacy of a fluocinolone acetonide (FAc) intravitreal implant (ILUVIEN®) in treating non-infectious uveitis using real-world data. This retrospective analysis included 135 eyes subdivided into responders and non-responders. Central retinal thickness (CRT), VA, and intraocular pressure (IOP) were followed over time. A significant decrease in CRT and an increase in VA were observed in all eyes throughout the follow-up period (p < 0.01). An IOP increase (p = 0.028) necessitated treatment in 43% of eyes by Month 6. Non-responders were older (p = 0.004) and had been treated with more dexamethasone (DEX) implants (p = 0.04); 89.3% had a defect in the external limiting membrane (ELM) and inner/outer segment (IS/OS) zone (p < 0.001). Immunomodulatory therapy had no impact on treatment response. Pars plana vitrectomy (PPV) patients had a mean CRT reduction of 47.55 µm and a reduced effect by Month 24 (p = 0.046) versus non-PPV patients. We conclude that the FAc implant achieves long-term control of CRT and improves VA. Increases in IOP were manageable. Eyes with a previous PPV showed milder results. Data showed a correlation between older age, a damaged ELM and IS/OS zone, frequent DEX inserts, and poorer outcome measures.

Intravitreal Fluocinolone Acetonide 0.19 mg Implant in a Patient with Resistant Blau Syndrome: A Case Report

Introduction

Blau syndrome is a progressive disease with an unknown etiology and pathogenesis. It can cause severe damage, especially in the eye with severe involvement.

Case Presentation

A six-year-old female was referred to us complaining about blurry vision and floaters in both eyes for 1 year. She had been diagnosed with Blau syndrome and Blau syndrome-associated anterior uveitis. Her best-corrected visual acuity in the right and left eyes was 20/70 and 20/80, respectively. Slit-lamp exam revealed faint bilateral band keratopathy along with 1+ anterior chamber cells and posterior synechia 360° in both eyes. During dilated fundoscopy, 2+ haze in the media was observed, along with swollen and hyperemic disc OU. Based on changes in optical coherence tomography, fluorescein angiography, and indocyanine green angiography, she was diagnosed with panuveitis and retinal vasculitis. Given her complicated history, we decided to proceed with an intravitreal fluocinolone acetonide 0.19 mg implant implantation in both eyes. During the 1-month follow-up visit, vitreous haze, retinal vasculitis, and active choroiditis were resolved. At 6-month follow-up visit, no changes were observed compared to the 1-month follow-up visit.

Conclusion

In cases of Blau syndrome that display resistance to systemic immunomodulatory therapies, the inclusion of local treatments, such as the intravitreal fluocinolone acetonide 0.19 mg implant, should be considered as an adjunctive therapeutic option.