title: Safety and efficacy assessment of chimeric ribozyme to proliferating cell nuclear antigen to prevent recurrence of proliferative vitreoretinopathy.
abstract: OBJECTIVE
  To determine the safety and efficacy of VIT100 (Immusol, Inc, San Diego, California), a ribozyme to proliferating cell nuclear antigen, in preventing recurrent proliferative vitreoretinopathy (PVR) in patients with established PVR who undergo vitrectomy for retinal reattachment repair.
  
  
  METHODS
  A multicenter, double-masked, placebo-controlled, randomized clinical trial. One hundred seventy-five eyes from 175 patients with grade C or worse PVR were randomly assigned to receive high-dose VIT100, low-dose VIT100, or placebo by intravitreal injection at the conclusion of retinal reattachment surgery.
  
  
  METHODS
  The primary efficacy end point was recurrent retinal detachment secondary to PVR. The secondary end point was recurrent retinal detachment due to any cause.
  
  
  RESULTS
  One hundred fifty-four patients completed the study. Forty-one patients (27%) developed recurrent retinal detachment due to PVR by 24 weeks, including 18 patients (33%) in the group receiving 0.75 mg, 13 patients (24%) in the group receiving 0.15 mg, and 10 patients (22%) in the placebo group. There was no statistically significant difference in patients reaching this end point by 24 weeks (P = .37). Ancillary statistical analyses are reported.
  
  
  CONCLUSIONS
  VIT100 was not effective in preventing PVR recurrence in patients with established grade C or worse PVR.
  
  
  CONCLUSIONS
  To our knowledge, this is the most recent, meticulously designed clinical trial in PVR.
authors.affiliation: Department of Ophthalmology, Edward S. Harkness Eye Institute, College of Physicians and Surgeons, Columbia University, New York, New York, USA.
authors.forename: William M
authors.initials: WM
authors.lastname: Schiff
authors.forename: John C
authors.initials: JC
authors.lastname: Hwang
authors.forename: Michael D
authors.initials: MD
authors.lastname: Ober
authors.forename: Jeffrey L
authors.initials: JL
authors.lastname: Olson
authors.forename: Elona
authors.initials: E
authors.lastname: Dhrami-Gavazi
authors.forename: Gaetano R
authors.initials: GR
authors.lastname: Barile
authors.forename: Stanley
authors.initials: S
authors.lastname: Chang
authors.forename: Naresh
authors.initials: N
authors.lastname: Mandava
mesh_terms: D004311:Double-Blind Method; D005260:Female; D006801:Humans; D007267:Injections; D007429:Intraocular Pressure; D008297:Male; D008875:Middle Aged; D018809:Proliferating Cell Nuclear Antigen / Q000235:genetics*; D011446:Prospective Studies; D016337:RNA, Catalytic / Q000008:administration & dosage* / Q000009:adverse effects; D012333:RNA, Messenger / Q000235:genetics; D011993:Recombinant Fusion Proteins / Q000008:administration & dosage / Q000009:adverse effects; D012163:Retinal Detachment / Q000517:prevention & control / Q000601:surgery; D012591:Scleral Buckling; D055502:Secondary Prevention; D016896:Treatment Outcome; D014792:Visual Acuity; D014821:Vitrectomy; D018630:Vitreoretinopathy, Proliferative / Q000517:prevention & control*; D014822:Vitreous Body
chemical_list: D018809:Proliferating Cell Nuclear Antigen; D016337:RNA, Catalytic; D012333:RNA, Messenger; D011993:Recombinant Fusion Proteins