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Short-term intraocular pressure trends following intravitreal ranibizumab injections for neovascular age-related macular degeneration-the role of oral acetazolamide in protecting glaucoma patients.

ABSTRACT: PURPOSE: To determine the effect of oral acetazolamide on lowering the peak and duration of intraocular pressure (IOP) rise in glaucoma and glaucoma suspect patients, following intravitreal injection of ranibizumab for neovascular age-related macular degeneration. METHODS: The study was an open-label, parallel, randomised, controlled trial (EudraCT Number: 2010-023037-35). Twenty-four glaucoma or glaucoma suspect patients received either 500?mg acetazolamide or no treatment 60-90?min before 0.5?mg ranibizumab. The primary outcome measure was the difference in IOP immediately after injection (T0) and 5, 10, and 30?min following injection. ANCOVA was used to compare groups, adjusting for baseline IOP. The study was powered to detect a 9-mm?Hg difference at T0. RESULTS: The IOP at T0 was 2.3?mm?Hg higher in the non-treated group (mean 44.5?mm?Hg, range (19-86?mm?Hg)) compared with the treated group (mean 42.2?mm?Hg, range (25-58?mm?Hg)), but was not statistically significant after adjusting for baseline IOP (P=0.440). At 30?min, IOP was 4.9?mm?Hg higher in the non-treated group (mean 20.6?mm?Hg, range (11-46?mm?Hg)) compared with the treated group (mean 15.7?mm?Hg, range (8-21?mm?Hg)). This was statistically significant after adjusting for baseline IOP (P=0.013). CONCLUSIONS: Although the primary end points were not reached, 500?mg oral acetazolamide, 60-90?min before intravitreal injection, results in a statistically significant reduction in IOP at 3O min post injection. Prophylactic treatment may be considered as an option to minimise neuro-retinal rim damage in high-risk glaucoma patients who are most vulnerable to IOP spikes and undergoing repeated intravitreal injections of ranibizumab.

SUBMITTER: Murray CD

PROVIDER: S-EPMC4194342 | biostudies-literature | 2014 Oct

REPOSITORIES: biostudies-literature

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Short-term intraocular pressure trends following intravitreal ranibizumab injections for neovascular age-related macular degeneration-the role of oral acetazolamide in protecting glaucoma patients.

Murray C D CD Wood D D Allgar V V Walters G G Gale R P RP

Eye (London, England) 20140801 10

<h4>Purpose</h4>To determine the effect of oral acetazolamide on lowering the peak and duration of intraocular pressure (IOP) rise in glaucoma and glaucoma suspect patients, following intravitreal injection of ranibizumab for neovascular age-related macular degeneration.<h4>Methods</h4>The study was an open-label, parallel, randomised, controlled trial (EudraCT Number: 2010-023037-35). Twenty-four glaucoma or glaucoma suspect patients received either 500 mg acetazolamide or no treatment 60-90 mi ...[more]

PMID: 25081290

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Project description:BackgroundAnti-vascular endothelial growth factor (anti-VEGF) agents have become the standard of care in neovascular age-related macular degeneration (nAMD). Despite generally excellent response rates to anti-VEGF therapy, some patients do not respond or may respond suboptimally. In the case of refractory or rapidly recurring fluid in nAMD, clinicians may switch to another anti-VEGF agent. TITAN was an observational study that assessed the effectiveness and safety of intravitreal aflibercept (IVT-AFL) in patients with nAMD refractory to ranibizumab who switched to IVT-AFL after less than 12 months of ranibizumab treatment in routine clinical practice in France.MethodsTITAN was an observational, retrospective and prospective 12-month study conducted at 28 centres in France. Patients with nAMD refractory to ranibizumab were enrolled. Patients who were switched from ranibizumab to IVT-AFL were followed for 12 months. Data were obtained from medical records for retrospectively included patients, and at routine follow-up visits for those included prospectively. The main outcome measure was percentage of patients who achieved treatment success (gain of ≥1 Early Treatment Diabetic Retinopathy Study letters in best-corrected visual acuity [BCVA] and/or any reduction in central retinal thickness [CRT]) from baseline to 12 months after switching. A sample size of 225 patients was determined based on a 2-sided 95% confidence interval with a width equal to 0.12 when the sample proportion was 0.70.ResultsWe analysed safety data (N = 217) and clinical outcomes from patients in the per-protocol population (n = 125). The mean (standard deviation) number of IVT-AFL injections was 7.5 (2.6). Treatment success was achieved in 68.8% of patients. Mean BCVA change from baseline to Month 12 was + 1.5 letters (P = 0.105) and the mean CRT change was - 45.0 μm (P < 0.001). In a subgroup analysis, in patients who received three initial monthly IVT-AFL injections, mean BCVA gain was 3.3 letters at Month 12 (P = 0.015). Excluding lack of efficacy and inappropriate scheduling of drug administration, the most common adverse event was eye pain (2.3%).ConclusionsSwitching ranibizumab-refractory patients with nAMD to IVT-AFL may improve visual outcomes in some patients, particularly those who receive three initial monthly injections.Trial registrationClinicalTrials.gov , NCT02321241 . First posted: December 22, 2014; Last update posted: July 2, 2018.

Project description:BackgroundClinical trials have established the efficacy of ranibizumab for the treatment of neovascular age-related macular degeneration (AMD). In addition, bevacizumab is used off-label to treat AMD, despite the absence of similar supporting data.MethodsIn a multicenter, single-blind, noninferiority trial, we randomly assigned 1208 patients with neovascular AMD to receive intravitreal injections of ranibizumab or bevacizumab on either a monthly schedule or as needed with monthly evaluation. The primary outcome was the mean change in visual acuity at 1 year, with a noninferiority limit of 5 letters on the eye chart.ResultsBevacizumab administered monthly was equivalent to ranibizumab administered monthly, with 8.0 and 8.5 letters gained, respectively. Bevacizumab administered as needed was equivalent to ranibizumab as needed, with 5.9 and 6.8 letters gained, respectively. Ranibizumab as needed was equivalent to monthly ranibizumab, although the comparison between bevacizumab as needed and monthly bevacizumab was inconclusive. The mean decrease in central retinal thickness was greater in the ranibizumab-monthly group (196 μm) than in the other groups (152 to 168 μm, P=0.03 by analysis of variance). Rates of death, myocardial infarction, and stroke were similar for patients receiving either bevacizumab or ranibizumab (P>0.20). The proportion of patients with serious systemic adverse events (primarily hospitalizations) was higher with bevacizumab than with ranibizumab (24.1% vs. 19.0%; risk ratio, 1.29; 95% confidence interval, 1.01 to 1.66), with excess events broadly distributed in disease categories not identified in previous studies as areas of concern.ConclusionsAt 1 year, bevacizumab and ranibizumab had equivalent effects on visual acuity when administered according to the same schedule. Ranibizumab given as needed with monthly evaluation had effects on vision that were equivalent to those of ranibizumab administered monthly. Differences in rates of serious adverse events require further study. (Funded by the National Eye Institute; ClinicalTrials.gov number, NCT00593450.).

Project description:ImportanceThe port delivery system (PDS) with ranibizumab has demonstrated noninferior and equivalent efficacy compared with monthly intravitreal injections of ranibizumab, an anti-vascular endothelial growth factor (VEGF) agent, in patients with neovascular age-related macular degeneration (nAMD), but evaluating patient preference is important to help inform clinical decision-making.ObjectiveEvaluate treatment satisfaction for ranibizumab delivered via PDS vs intravitreal injections as well as patient preference among those assigned to PDS.Design, setting, and participantsArchway was a phase 3 randomized active-comparator open-label clinical trial conducted at 78 sites in the US. Patients 50 years and older with nAMD diagnosed within 9 months of screening with a documented response to anti-VEGF therapy were included. Of 619 patients screened, 418 were enrolled; 415 were included in the primary analysis and 234 were included in the secondary exploratory analysis. The Archway study ran from September 12, 2019, through primary readout on May 22, 2020.InterventionsPatients were randomized 3:2 to PDS with ranibizumab, 100 mg/mL, with fixed refill exchanges every 24 weeks or intravitreal ranibizumab injections, 0.5 mg, every 4 weeks.Main outcomes and measuresTreatment satisfaction was measured using the Macular Disease Treatment Satisfaction Questionnaire in the PDS and intravitreal injection arms at week 40. Patient preference was assessed using the content-validated PDS Patient Preference Questionnaire (PPPQ), which measured the proportion of patients in the PDS arm with monthly monitoring who preferred treatment with the PDS at week 40 over previous intravitreal injections or concurrent fellow-eye injections. Both outcomes were exploratory end points.ResultsThe mean (SD) age of participants at baseline was 75.0 (7.9) years; 234 participants (59%) were women and 162 (41%) were men. At week 40, differences in overall treatment satisfaction scores were minimal for the PDS and intravitreal injection arms (mean, 68.0; 95% CI, 67.4-68.6; n = 237 and mean, 66.1; 95% CI, 64.9-67.3; n = 159, respectively; difference, 1.9; 95% CI, 0.7-3.1). A total of 234 of 248 patients (94.4%) in the PDS arm were included in the PPPQ analysis. At week 40, almost all patients in the PDS arm preferred treatment via PDS (218 of 234 [93.2%]) vs previous intravitreal injections (3 of 234 [1.3%]), including 172 of 234 (73.5%) with a very strong preference for the PDS. In patients who received concurrent fellow-eye injections (n = 78), 72 (92.3%) preferred the PDS.Conclusions and relevanceAlthough PDS treatment was preferred by almost all patients assigned to PDS over previous intravitreal injections, both delivery methods have high treatment satisfaction. These findings provide further evidence for the PDS as a meaningful alternative treatment option for patients with nAMD.Trial registrationClinicalTrials.gov Identifier: NCT03677934.

Dataset Information

Short-term intraocular pressure trends following intravitreal ranibizumab injections for neovascular age-related macular degeneration-the role of oral acetazolamide in protecting glaucoma patients.

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Short-term intraocular pressure trends following intravitreal ranibizumab injections for neovascular age-related macular degeneration-the role of oral acetazolamide in protecting glaucoma patients.

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