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OpenTrials
Completed

NCT Number: NCT00925600

Evaluation of New or Worsening Lens Opacifications in Men With Non-metastatic Prostate Cancer Receiving Denosumab for Bone Loss

This is a phase 3, randomized, double-blind, placebo-controlled study to evaluate new or worsening lens opacifications in men with non-metastatic prostate cancer receiving denosumab for bone loss due to androgen deprivation therapy.

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Key information

Who can participate

Healthy volunteers accepted: No

Only the study team can determine whether someone qualifies for participation.

Inclusion criteria

  • Men ≥ 30 years of age with non-metastatic prostate cancer, having undergone bilateral orchiectomy or initiated androgen deprivation therapy (ADT) with gonadotropin-releasing hormone (GnRH) agonists and is expected to continue on ADT for at least 12 months
  • Adequate visual accuracy allowing eye testing
  • Bone Mineral Density (BMD) requirements: Osteopenia if under 70 years of age; Osteopenia or normal BMD if over 70 years of age
  • Signed informed consent

Exclusion criteria

  • Previous surgery for cataracts in both eyes, current diagnosis of cataracts, cataracts surgery foreseen in the near future, or ocular disease leading to visual loss
  • Diagnosis of osteoporosis

Treatment and study plan

Denosumab

Biological

Prefilled syringe for subcutaneous (SC) injection administered at a dose of 60 mg

Other names: Prolia®

Placebo

Biological

Prefilled syringe for subcutaneous (SC) injection

Primary outcomes

  1. Percentage of Participants With Lens Opacification Event Development or Progression by Month 12

    Time frame: 12 months

    The Lens Opacities Classification System III (LOCS III) is a slit lamp based opacification grading method. Photographs of slit lamp cross-sections of the lens are used as references for grading nuclear opalescence (NO) and nuclear color (NC), and photographs of the lens seen by retroillumination are used as references for grading cortical (C) and posterior subcapsular (P) cataract. Opacification severity is graded on a decimal scale, scores can range from 0.1 to 6.9 for NO and NC and from 0.1 to 5.9 for C and P. For each opacification type the higher grading scores indicate greater severity. Lens opacification event development or progression by month 12 was based on a change of ≥ 1.0 in P, ≥ 1.0 in C, or ≥ 0.7 in NO in the LOCS III score from baseline.

Other outcomes

  1. Percentage of Participant With Lens Opacification Event Development or Progression by Month 12 Based on a Change of ≥ 1.5 in P, ≥ 1.5 in C, or ≥ 1.5 in NO in the LOCS III Score

    Time frame: 12 months

    The Lens Opacities Classification System III (LOCS III) is a slit lamp based opacification grading method. Photographs of slit lamp cross-sections of the lens are used as references for grading nuclear opalescence (NO) and nuclear color (NC), and photographs of the lens seen by retroillumination are used as references for grading cortical (C) and posterior subcapsular (P) cataract. Opacification severity is graded on a decimal scale, scores can range from 0.1 to 6.9 for NO and NC and from 0.1 to 5.9 for C and P. For each opacification type the higher grading scores indicate greater severity. Lens opacification event development or progression by month 12 was based on a change ≥ 1.5 in P, ≥ 1.5 in C, or ≥ 1.5 in NO in the LOCS III score from baseline.

  2. Percentage of Participants With Lens Opacification Event Development or Progression by Month 6

    Time frame: 6 months

    The Lens Opacities Classification System III (LOCS III) is a slit lamp based opacification grading method. Photographs of slit lamp cross-sections of the lens are used as references for grading nuclear opalescence (NO) and nuclear color (NC), and photographs of the lens seen by retroillumination are used as references for grading cortical (C) and posterior subcapsular (P) cataract. Opacification severity is graded on a decimal scale, scores can range from 0.1 to 6.9 for NO and NC and from 0.1 to 5.9 for C and P. For each opacification type the higher grading scores indicate greater severity. Lens opacification event development or progression by month 6 was based on a change of ≥ 1.0 in P, ≥ 1.0 in C, or ≥ 0.7 in NO in the LOCS III score from baseline.

  3. Percentage of Participants With Confirmed Lens Opacification Event Development or Progression by Month 12

    Time frame: 12 months

    The Lens Opacities Classification System III (LOCS III) is a slit lamp based opacification grading method. Photographs of slit lamp cross-sections of the lens are used as references for grading nuclear opalescence (NO) and nuclear color (NC), and photographs of the lens seen by retroillumination are used as references for grading cortical (C) and posterior subcapsular (P) cataract. Opacification severity is graded on a decimal scale, scores can range from 0.1 to 6.9 for NO and NC and from 0.1 to 5.9 for C and P. For each opacification type the higher grading scores indicate greater severity.

    Lens opacification event development or progression by month 12 was based on a change of ≥ 1.0 in P, ≥ 1.0 in C, or ≥ 0.7 in NO in the LOCS III score from baseline. A confirmed lens opacification event development or progression was defined as 2 directly subsequent events per protocol assessments at the same location (P, C, NO) using LOCS III as above.

  4. Percentage of Participants With a Decrease From Baseline in Best Corrected Visual Acuity (BCVA) of ≥ 10 Letters

    Time frame: Baseline and Months 3, 6, 9 and 12

    The best corrected visual acuity (BCVA) is the best vision one can achieve with correction (such as eye glasses) as measured on an eye chart. BCVA was assessed by a trained ophthalmologist using the Early Treatment Diabetic Retinopathy Study (ETDRS) eye chart at 4 meters. The modified University of Crete ETDRS chart was used in Ukraine, Greece, Russia and Bulgaria, which do not use the Roman alphabet. The 2000 series revised ETDRS chart was used to assess the change in all other countries.

    The letter score was calculated based on the number of letters that were correctly identified; higher letter scores correspond to better visual acuity.

  5. Change From Baseline in Refraction Needed to Achieve BCVA

    Time frame: Baseline and months 3, 6, 9, and 12

    Refraction error was measured using a phoropter. The change from baseline in spherical refraction error needed to achieve BCVA is reported.

  6. Number of Participants With Adverse Events

    Time frame: 12 months

    Adverse events (AEs) were assessed for severity by the investigator according to the Common Terminology Criteria for Adverse Events (CTCAE) severity grading scale, version 3.0, where Grade 1 = Mild AE, Grade 2 = Moderate AE, Grade 3 = Severe AE, Grade 4 =Life-threatening AE and Grade 5 = Death due to AE.

    Treatment-related AEs (TRAEs) include only events for which the investigator indicated there was a reasonable possibility they may have been caused by the study drug.

Sponsors and collaborators

Lead sponsor

Amgen

Industry

Registry information

Official study title

A Double-blind, Placebo-controlled Study to Evaluate New or Worsening Lens Opacifications in Subjects With Non-metastatic Prostate Cancer Receiving Denosumab for Bone Loss Due to Androgen-Deprivation Therapy

Important dates

Study start
2009
Primary completion
2016
Study completion
2016
First posted
Jun 22, 2009
Registry last updated
May 30, 2017

OpenTrials presents study information sourced from ClinicalTrials.gov. The official registry record should be consulted for the latest information.

View the official ClinicalTrials.gov record (opens in a new tab)

This listing is for discovery and informational purposes only. It is not medical advice, does not guarantee that a study is recruiting, and does not determine eligibility. Contact the study team and a qualified healthcare professional when considering participation.

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