CClinicalTrials.gg
Status unknownNCT01038947Updated Dec 24, 2009

Safety and Efficacy Study of Intramuscular Uricase-PEG 20

A Phase 1 interventional study of Uricase-PEG 20 in Gout and Hyperuricemia, sponsored by EnzymeRx. Status unknown at 2 sites in United States. Open to participants aged 40 Years to 75 Years, including healthy volunteers. Per ClinicalTrials.gov, last updated 2009-12-24.

Sponsored by EnzymeRx · Phase 1, Interventional, and Treatment

The sponsor has not verified this record recently (last verified Dec 2009), so the status shown — last known as Recruiting — may be out of date.
Phase
Phase 1
Study type
Interventional
Enrollment
28
Allocation
Not applicable
Ages
40 Years to 75 Years
Sex
All
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Study summary

The purpose of this study is to assess the safety, pharmacokinetics and pharmacodynamics of single and multiple intramuscular doses of Uricase-PEG 20

Read the detailed description

Uricase is an enzyme (found in most mammals but not humans) that converts poorly soluble uric acid into highly soluble allantoin. Because humans lack uricase, they are prone to develop elevated levels of uric acid, which can form crystals in the joints and soft tissues. In those which chronically elevated uric acid, gout may develop. In the setting of acute rises in uric acid, seen for example in tumor lysis syndrome, uric acid crystals can damage the renal tubules. Uricase-PEG 20 is a recombinant uricase conjugated with multiple PEG molecules designed to prolong the half-life and decrease the immunogenicity of uricase. This study will characterize the safety, pharmacokinetics and pharmacodynamics of intramuscular Uricase-PEG 20, the anticipated route of administration to be used in future clinical development in gout.

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Conditions studied

  • Gout
  • Hyperuricemia

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03

In context

Hyperuricemia

215 studies on the registry are indexed under Hyperuricemia; 40 are open to participants now.

This study's planned enrollment of 28 is below the median of 64 across 172 interventional studies indexed under Hyperuricemia.

Browse Hyperuricemia studies →

Lead sponsor

EnzymeRx is the lead sponsor of 2 studies on the registry; none are open to participants now.

Counted across the registry records on this site, refreshed daily.

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Who can participate

Ages eligible
40 Years to 75 Years
Sexes eligible
All
Accepts healthy volunteers
Yes

Inclusion criteria

  • Serum uric acid > 6 mg/dL (men) or > 5 mg/dL (women)
  • Clinical laboratory values within normal limits or not clinically significant
  • Women should be menopausal or peri-menopausal

Exclusion criteria

Exclusion Criteria:

  • Prior exposure to uricase
  • History of severe allergic reactions, or any allergy to PEG or pegylated products
  • G6PD or catalase deficiency
  • Medical condition that may interfere with ability to complete the study (e.g., uncontrolled diabetes or hypertension, congestive heart failure NYHA Class III or IV, history of myocardial infarction, immunosuppression, pregnancy)
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Study design

Phase
Phase 1
Primary purpose
Treatment
Allocation
Not applicable
Intervention model
Single group
Masking
None (open label)
Enrollment
28 participants (estimated)

Study arms

  • Experimental
    Uricase-PEG 20

    Cohorts will receive ascending doses of Uricase-PEG 20 in a sequential manner. The study will enroll both single dose cohorts and multi-dose cohorts.

    Biological: Uricase-PEG 20

Interventions

  • BiologicalUricase-PEG 20

    Intramuscular injection of Uricase-PEG 20 without premedication

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What researchers measure

Primary outcomes

  1. Safety (assessment of signs and symptoms and clinical laboratory measurements following administration of Uricase-PEG 20, graded according to the Common Toxicity Criteria for Rheumatology, version 2.0)

    Time frame: Up to 35 days after dosing

Secondary outcomes

  1. Pharmacokinetics (Uricase-PEG 20 serum concentration)

    Time frame: Up to 35 days after dosing

  2. Pharmacodynamics (plasma uric acid concentration)

    Time frame: Up to 35 days after dosing

  3. Immunogenicity

    Time frame: Up to 35 days after dosing

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Study locations

2 of 2 sites recruiting
  • MRA Clinical Research
    Miami, Florida 33143, United States
    Recruiting
  • Altoona Center for Clinical Research
    Duncansville, Pennsylvania 16635, United States
    • Ellen Kivitz · Contact · 814-693-0300
    • Alan J Kivitz, MD · Principal investigator
    Recruiting
08

References and documents

Publications

  • Bomalaski JS, Holtsberg FW, Ensor CM, Clark MA. Uricase formulated with polyethylene glycol (uricase-PEG 20): biochemical rationale and preclinical studies. J Rheumatol. 2002 Sep;29(9):1942-9. PubMed 12233890 ↗
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Updates

Tracking since Sep 25, 2026
No changes since tracking began. The registry record was last updated on Dec 24, 2009, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
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Registry details

Key details

Study ID
NCT01038947
Lead sponsor
EnzymeRx
First posted
Dec 24, 2009
Start date
Dec 2009
Primary completion
Apr 2010 (estimated)
Completion
May 2010 (estimated)
Last update
Dec 24, 2009

Study contacts

Rocelle Flores
Contact
rflores@enzymerx.com
201-843-4424 ext. 203
Anthony S Fiorino, MD, PhD
study director · EnzymeRx, LLC
Patricia Pardo, MD
principal investigator · MRA Clinical Research

Oversight

Data monitoring committee
No
View the source record on ClinicalTrials.gov ↗

Not currently enrolling

This study is status unknown, as verified in Dec 2009. You cannot join it, but the record below documents what was studied.

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