Total Infectome Characterization of Eye Infections
For patients and families
In plain language
An automatic summary of structured registry data. It is an orientation aid, not a substitute for the official protocol or a physician assessment.
- What is being studied
- This is an observational study: the protocol does not assign a study treatment.
- Who it may be relevant to
- Registry conditions: Eye Infections, Diagnosis. Basic parameters: No limits · All.
- What needs checking
- Age, condition and sex are only basic indicators. Prior treatment, laboratory values and other mandatory requirements appear in the eligibility criteria below.
- Where it takes place
- China
- Next step
- Save the trial, show it to the treating physician, and confirm current recruitment with the study center. Costs, documents and travel →
Unsure about the terms? Read our patient guide →
Official title
Total Infectome Characterization of Eye Infections: a Metagenomic Sequencing Based Observational Study
Overview
Multiple pathogens can cause eye infection. In recent years, emerging and resurging viral infections represent an important public health problem. Many emerging viruses cause infectious diseases involving ophthalmic manifestations, including Mpox virus, Zika, Ebola, and SARS-CoV-2. Broad and unbiased pathogen surveillance is essential, so we design this unbiased metagenomic sequencing based study to investigate the total infectome of eye infections. The study is historical and prospective in design.
Detailed description
This is an investigator-initiated observational study to describe the total infectome of eye infections using metagenomic sequencing. The eye infections, including acute conjunctivitis, keratitis, uveitis, and endophthalmitis, are diagnosed by experienced ophthalmologists according to routine clinical exams.
For the collection of additional biological samples apart from the diagnosis and treatment process, written informed consent is required from the eligible subjects or their legal guardians at the recruitment time is required. The application for exemption of informed consent has been made for using clinical surplus samples. After completing informed consent, subjects will be sampled, and their clinical information will be collected.
Biospecimens, including conjunctival sac swabs (1 swab for each involving eye), or intraocular fluid (more than 100μl), will be collected for metagenomic sequencing using the Illumina NovaSeq X Plus platform.
The clinical information of participants will be collated from electronic medical record information system, including (1) demographic characteristics: age, sex, comorbidities; (2) laboratory examination: blood routine test, immune inflammatory factors, clinical microbiology examination (PCR, serological examination, culture, etc.); (3) imaging examination: anterior segment photograph, corneal endothelial cell examination, corneal confocal microscopy, fundus photograph.
Meta-transcriptomic analysis of the ocular samples will be conducted to identify viruses, bacteria, fungi and parasites. The abundance of pathogens is indicated as the RPKM (i.e. Reads Per Million divided by the length of the reference genome, measured in kilobases).
Eligible participants will be recruited consecutively between August, 2024 and December, 2026 in Department of Ophthalmology, Shanghai General Hospital. The total study duration is expected to be two years from the first subject enrolled to the final analysis.
Primary outcome measures
- The pathogen profile [Time frame: through study completion, an average of 2 year]
Secondary outcome measures (1)
- Microbial abundance [Time frame: through study completion, an average of 2 year]
Eligibility criteria
Inclusion criteria
- Patients with a clinical diagnosis of one or more types of eye infections (including acute conjunctivitis, keratitis, uveitis, and endophthalmitis).
- Biological samples has been collected for clinical microbiological examination, or consented to participate in this study.
Exclusion criteria
1\. Patients who have no historically clinical surplus specimens.
Criteria are shown verbatim from the registry (in English). Final eligibility is always assessed by the study center.
Healthy volunteers: No
Study design
- Observational model
- Case-only
Study locations
China · 1 center
- Shanghai General Hospital — Shanghai
Publications
- Vasquez-Perez A, Magan T, Volpe G, Osborne SF, McFaul K, Vahdani K. Necrotizing Blepharoconjunctivitis and Keratitis in Human Monkeypox. JAMA Ophthalmol. 2023 Mar 1;141(3):285-288. doi: 10.1001/jamaophthalmol.2022.6253. PMID 36757718
- Rose-Nussbaumer J, Doan T. Role of Ophthalmology in Emerging Infectious Diseases. JAMA Ophthalmol. 2022 Oct 1;140(10):935. doi: 10.1001/jamaophthalmol.2022.4017. PMID 36069833
- Barshak MB, Durand ML, Gupta A, Mohareb AM, Dohlman TH, Papaliodis GN. State-of-the-Art Review: Ocular Infections. Clin Infect Dis. 2024 Nov 22;79(5):e48-e64. doi: 10.1093/cid/ciae433. PMID 39571607
- Durand ML, Barshak MB, Sobrin L. Eye Infections. N Engl J Med. 2023 Dec 21;389(25):2363-2375. doi: 10.1056/NEJMra2216081. No abstract available. PMID 38118024
- Ranjan R, Ranjan S. Ocular Pathology: Role of Emerging Viruses in the Asia-Pacific Region-A Review. Asia Pac J Ophthalmol (Phila). 2014 Sep-Oct;3(5):299-307. doi: 10.1097/APO.0000000000000021. PMID 26107917
- Tsui E, Sella R, Tham V, Kong AW, McClean E, Goren L, Bahar I, Cherian N, Ramirez J, Hughes RE Jr, Privratsky JK, Onclinx T, Feit-Leichman R, Cheng A, Molina I, Kim P, Yu C, Ruder K, Tan A, Chen C, Liu Y, Abraham T, Hinterwirth A, Zhong L, Porco TC, Lietman TM, Seitzman GD, Doan T; SCORPIO Study Group. Pathogen Surveillance for Acute Infectious Conjunctivitis. JAMA Ophthalmol. 2023 Dec 1;141(12):1 PMID 37917077
- Austin A, Lietman T, Rose-Nussbaumer J. Update on the Management of Infectious Keratitis. Ophthalmology. 2017 Nov;124(11):1678-1689. doi: 10.1016/j.ophtha.2017.05.012. Epub 2017 Sep 21. PMID 28942073
- Ai JW, Weng SS, Cheng Q, Cui P, Li YJ, Wu HL, Zhu YM, Xu B, Zhang WH. Human Endophthalmitis Caused By Pseudorabies Virus Infection, China, 2017. Emerg Infect Dis. 2018 Jun;24(6):1087-1090. doi: 10.3201/eid2406.171612. PMID 29774834
Identifiers
NCT: NCT06775808 · SHGH-CRU-2024516