Trial reportGraefe's archive for clinical and experimental ophthalmology = Albrecht von Graefes Archiv fur klinische und experimentelle Ophthalmologie2023
Oral minocycline for the treatment of retinitis pigmentosa-associated cystoid macular edema: results of a phase I/II clinical trial.
Trial report in Graefe's archive for clinical and experimental ophthalmology = Albrecht von Graefes Archiv fur klinische und experimentelle Ophthalmologie, 2023. The graph could read no effect estimate from its abstract, so it casts no vote on the map. It is linked to trial NCT02140164 (Pilot Study to Evaluate Oral Minocycline in the Treatment of Cystoid Macular Edema Associated With Retinitis Pigmentosa), which is not on this map. Cited by 3 papers.
What it found
Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.
The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.
The trial behind it
Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.
Pilot Study to Evaluate Oral Minocycline in the Treatment of Cystoid Macular Edema Associated With Retinitis Pigmentosa
Who cites it
3 citing papers in PubMed, 8 citations in OpenAlex.
- Efficacy and safety of minocycline in retinitis pigmentosa: a prospective, open-label, single-arm trial.Signal transduction and targeted therapy · 2024Trial
- Phase 1/2a Clinical Trial Protocol for Lentiviral Vector-Based Retinal Gene Therapy to Slow the Progression of Retinitis Pigmentosa.Methods in molecular biology (Clifton, N.J.) · 2026Article
- Study protocol for a prospective natural history registry investigating the relationships between inflammatory markers and disease progression in retinitis pigmentosa: the RP-PRIMARY study.Japanese journal of ophthalmology · 2025Observational
Corrections and comments
PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.
Authors and funding
7 authors at 1 institution in 1 country.
Funding
Abstract
purposeThe etiology of retinitis pigmentosa (RP)-associated cystoid macular edema (CME) has been related to retinal neuroinflammation and microglial activation. Minocycline, a drug FDA-approved for anti-microbial indications, also inhibits microglial activation and expression of inflammatory mediators. This study investigates the safety and efficacy of oral minocycline as primary treatment for RP-associated CME.
methodsA single-center, prospective, open-label phase I/II clinical trial enrolled five participants with RP-associated CME. Participants had lead-in assessments prior to the initiation of oral minocycline 100 mg twice daily for 12 months. Main outcome variables included changes in best-corrected visual acuity (BCVA) and retinal central subfield thickness (CST) measured using spectral domain optical coherence tomography relative to mean of pre-treatment measurements.
resultsThe study drug was well tolerated and not associated with any severe adverse events. No significant changes in mean BCVA from study baseline were noted in either the study eye (+ 0.7 ± 4.1 letters at 6 months, - 1.1 ± 1.7 letters at 12 months) or the qualifying fellow eye (- 0.3 ± 3.4 letters at 6 months, - 0.3 ± 4.6 letters at 12 months) (p > 0.05 for all comparisons). Mean percentage changes in CST from baseline however decreased progressively with treatment (decreases at 6 and 12 months: study eyes 3.9 and 9.8%; qualifying fellow eyes 1.4 and 7.7%). Considering all eyes (n = 10), mean percentage CST decrease at 6 and 12 months was 2.7 ± 9.5% (p = 0.39) and 8.7 ± 9.5% (p = 0.02) respectively.
conclusionOral minocycline administration over 12 months was associated with no significant changes in mean BCVA and a small but progressive decrease in mean CST.
trial registrationNCT02140164 (05/2014).
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Registered trials
Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.