- ICH GCP
- Registro degli studi clinici negli Stati Uniti
- Sperimentazione clinica NCT02956759
Early Laser Treatment for Diabetic Eye Disease in China : A Pilot Randomized Trial
Early Laser Treatment for Diabetic Eye Disease in China: The PEARL Pilot Randomized Trial
To compare immediate laser pan-retinal photocoagulation (PRP) treatment of severe or very severe non proliferative diabetic retinopathy (NPDR) stage versus deferral of treatment until the appearance of any proliferative diabetic retinopathy (PDR) in rural and urban patients in China.
Interview data from some patients and survey data from ophthalmologists in the study hospitals will help determine acceptability of early treatment, and how to overcome barriers to increased use of this option.
Panoramica dello studio
Stato
Condizioni
Intervento / Trattamento
Descrizione dettagliata
Tipo di studio
Iscrizione (Anticipato)
Fase
- Non applicabile
Contatti e Sedi
Contatto studio
- Nome: Wenhui Zhu, MD
- Numero di telefono: 8400 86-20-87755766
- Email: dctzwh@139.com
Luoghi di studio
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Guangdong
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Guangzhou, Guangdong, Cina, 510000
- Reclutamento
- Zhongshan Ophthalmic Center
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Contatto:
- Nathan Congdon, MD
- Numero di telefono: 86-020-87682342
- Email: ncongdon1@gmail.com
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Investigatore principale:
- Nathan Congdon, MD
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Criteri di partecipazione
Criteri di ammissibilità
Età idonea allo studio
Accetta volontari sani
Sessi ammissibili allo studio
Descrizione
Inclusion Criteria:
- Adults aged >= 18 years with untreated DR at severe or very severe NPDR stage in either one or both eyes, according to the clinical opinion of the investigator.
- Sufficiently clear ocular media to allow visualization of the retina and retinal photography in either eye.
- Capable of giving informed consent.
Exclusion Criteria:
- DR at later stage of retinopathy than severe or very severe (eg, two or more of the 4-2-1 criteria are met) NPDR in either eye, but a patient may be enrolled if one eye has severe or very severe NPDR and the fellow eye has PRP-treated PDR and has been stable after treatment.
- Clinically significant macular edema in either eye.
- Dense cataracts or other media opacity preventing visualization of the retina in the eye.
- History of previous surgical or laser treatment for DR or other retinal conditions in a study eye, including history of anti-VEGF or corticosteroid injection or focal laser for DME within 6 months, or any history of scleral buckle, vitrectomy or other retinal detachment repair.
- History of other retinal vascular disorders including CRVO, CRAO, BRVO, BRAO in the study eye.
- Previous cataract or glaucoma surgery is specifically allowed if performed ≥ 6 weeks prior to enrollment.
- Pregnancy.
- Severe renal insufficiency treated with hemodialysis treatment, kidney transplant, pancreatic transplant, and intensive insulin therapy initiated within 4 months.
- Nystagmus, unable to cooperate with laser treatment.
Piano di studio
Come è strutturato lo studio?
Dettagli di progettazione
- Scopo principale: Trattamento
- Assegnazione: Randomizzato
- Modello interventistico: Assegnazione parallela
- Mascheramento: Separare
Armi e interventi
Gruppo di partecipanti / Arm |
Intervento / Trattamento |
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Sperimentale: Early Intervention
pan-retinal photocoagulation laser treatment applied to the study eye within 2-4 weeks.
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PRP initially consists of 1200 - 1600 burns given over 2-3 sessions and separated by2-3weeks by 532-argon laser machine.
Altri nomi:
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Comparatore attivo: Standard Care
pan-retinal photocoagulation laser treatment deferred until the onset of any PDR.
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PRP initially consists of 1200 - 1600 burns given over 2-3 sessions and separated by2-3weeks by 532-argon laser machine.
Altri nomi:
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Cosa sta misurando lo studio?
Misure di risultato primarie
Misura del risultato |
Misura Descrizione |
Lasso di tempo |
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Proportion of eyes progressing to any degree of PDR
Lasso di tempo: 1 year
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The diagnosis of PDR will be made by detecting either active new vessels in the optic nerve head or elsewhere in the retina as determined by fundus photography read by a masked investigator or preretinal/vitreous haemorrhage at any time during the 12 month follow-up period.
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1 year
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Misure di risultato secondarie
Misura del risultato |
Misura Descrizione |
Lasso di tempo |
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Proportion of early versus standard treated eyes with: Loss of >= 10 and of 15 ETDRS letters
Lasso di tempo: 1 year
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1 year
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Mean change in best corrected visual acuity from baseline to week 52.
Lasso di tempo: 1 year
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1 year
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Proportion of early versus standard treated eyes with: retinal detachment
Lasso di tempo: 1 year
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1 year
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Proportion of early versus standard treated eyes with: increase of diabetic macular edema per Optical Coherence Tomography
Lasso di tempo: 1 year
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1 year
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Sensitivity & specificity of the diagnosis of any degree of PDR among study ophthalmologists
Lasso di tempo: 1 year
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Study ophthalmologists will also ascertain the primary outcome measure (diagnosis of any degree of PDR) on the basis of slit-lamp biomicropscopy fundus examination with a contact lens and indirect ophthalmoscopy.
We will compare the sensitivity & specificity of the diagnosis of any degree of PDR among study ophthalmologists with the gold stander (diagnosis provided by graders according to the fundus photos.)
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1 year
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Altre misure di risultato
Misura del risultato |
Lasso di tempo |
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Comparing the Early versus Standard groups: Proportion of participants show on recommended revisits on time and accept recommended treatments (laser treatment .etc)
Lasso di tempo: 1 year
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1 year
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Patient vision-related quality of life (VRQOL); composite and individual domain scores of the NEI VFQ25 questionnaire.
Lasso di tempo: 1 year
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1 year
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Collaboratori e investigatori
Sponsor
Investigatori
- Investigatore principale: Nathan Congdon, PhD, Zhongshan Ophthalmic Center, Sun Yat-sen University
Pubblicazioni e link utili
Pubblicazioni generali
- Xu Y, Wang L, He J, Bi Y, Li M, Wang T, Wang L, Jiang Y, Dai M, Lu J, Xu M, Li Y, Hu N, Li J, Mi S, Chen CS, Li G, Mu Y, Zhao J, Kong L, Chen J, Lai S, Wang W, Zhao W, Ning G; 2010 China Noncommunicable Disease Surveillance Group. Prevalence and control of diabetes in Chinese adults. JAMA. 2013 Sep 4;310(9):948-59. doi: 10.1001/jama.2013.168118.
- Wang FH, Liang YB, Zhang F, Wang JJ, Wei WB, Tao QS, Sun LP, Friedman DS, Wang NL, Wong TY. Prevalence of diabetic retinopathy in rural China: the Handan Eye Study. Ophthalmology. 2009 Mar;116(3):461-7. doi: 10.1016/j.ophtha.2008.10.003. Epub 2009 Jan 24.
- Fundus photographic risk factors for progression of diabetic retinopathy. ETDRS report number 12. Early Treatment Diabetic Retinopathy Study Research Group. Ophthalmology. 1991 May;98(5 Suppl):823-33.
- Royle P, Mistry H, Auguste P, Shyangdan D, Freeman K, Lois N, Waugh N. Pan-retinal photocoagulation and other forms of laser treatment and drug therapies for non-proliferative diabetic retinopathy: systematic review and economic evaluation. Health Technol Assess. 2015 Jul;19(51):v-xxviii, 1-247. doi: 10.3310/hta19510.
- Shimura M, Yasuda K, Nakazawa T, Kano T, Ohta S, Tamai M. Quantifying alterations of macular thickness before and after panretinal photocoagulation in patients with severe diabetic retinopathy and good vision. Ophthalmology. 2003 Dec;110(12):2386-94. doi: 10.1016/j.ophtha.2003.05.008.
- Japanese Society of Ophthalmic Diabetology, Subcommittee on the Study of Diabetic Retinopathy Treatment; Sato Y, Kojimahara N, Kitano S, Kato S, Ando N, Yamaguchi N, Hori S. Multicenter randomized clinical trial of retinal photocoagulation for preproliferative diabetic retinopathy. Jpn J Ophthalmol. 2012 Jan;56(1):52-9. doi: 10.1007/s10384-011-0095-2. Epub 2011 Oct 19.
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Termini MeSH pertinenti aggiuntivi
Altri numeri di identificazione dello studio
- ZOC-PEARL STUDY
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Queste informazioni sono state recuperate direttamente dal sito web clinicaltrials.gov senza alcuna modifica. In caso di richieste di modifica, rimozione o aggiornamento dei dettagli dello studio, contattare register@clinicaltrials.gov. Non appena verrà implementata una modifica su clinicaltrials.gov, questa verrà aggiornata automaticamente anche sul nostro sito web .
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