Evidence map›Paper›PMID 24588936›Full record

Trial reportArthritis research & therapy2014

Pegloticase immunogenicity: the relationship between efficacy and antibody development in patients treated for refractory chronic gout.

Peter E Lipsky, Leonard H Calabrese, Arthur Kavanaugh, John S Sundy, David Wright, Marsha Wolfson, Michael A Becker

2 registry-linked trialsOpen access · goldAbstract readRandomized Controlled Trial
In one paragraph

Trial report in Arthritis research & therapy, 2014. The graph could read no effect estimate from its abstract, so it casts no vote on the map. It is linked to 2 registered trials, which are not on this map. Cited by 113 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
113citing papers in PubMed, 1 pooled it
8.3field-weighted citation impact, top 2% of its field
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

NCT00325195 phase3completednot on this map

Randomized, Multicenter, Double-blind, Placebo-controlled Efficacy and Safety Study of 8 mg PEG-uricase in Two Dose Regimens in Hyperuricemic Subjects With Symptomatic Gout

TypeinterventionalSponsorSavient PharmaceuticalsRan2006 to 2007Enrolled225ConditionsGoutArmsplacebo, pegloticase
NCT01356498 phase3completednot on this map

Multicenter, Open Label Extension Study of 8 mg PEG-uricase in Subjects Who Completed Protocols C0405 or C0406 for Symptomatic Gout

TypeinterventionalSponsorSavient PharmaceuticalsRan2006 to 2010Enrolled151ConditionsGoutArmspegloticase
3 · Its place in the literature

Who cites it

113 citing papers in PubMed, 1 synthesis or guideline pooled it, 257 citations in OpenAlex.

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53 more citing papers are in PubMed but not listed here.

4 · The record

Corrections and comments

5 · Who and what money

Authors and funding

7 authors at 5 institutions in 1 country.

Peter E Lipsky
Leonard H Calabrese
Arthur Kavanaugh
John S Sundy
David Wright
Marsha Wolfson
Michael A Becker
Charlottesville Medical Research · USCleveland Clinic Lerner College of Medicine · USDuke Medical Center · USUniversity of California, San Diego · USUniversity of Chicago · US

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

introductionThe efficacy of pegloticase, a polyethylene glycol (PEG)-conjugated mammalian recombinant uricase, approved for chronic refractory gout, can be limited by the development of antibodies (Ab). Analyses from 2 replicate, 6-month, randomized controlled trials were performed to characterize Ab responses to pegloticase.

methodsAnti-pegloticase, anti-PEG, and anti-uricase Ab were determined by validated enzyme-linked immunosorbent assays. Ab titers were analyzed for possible relationships with serum pegloticase concentrations, serum uric acid (sUA) lowering, and risk of infusion reactions (IRs).

resultsSixty-nine (41%) of 169 patients receiving pegloticase developed high titer anti-pegloticase Ab (> 1:2430) and 40% (67/169) developed anti-PEG Ab; 1 patient receiving placebo developed high titer anti-pegloticase Ab. Only 14% (24/169) of patients developed anti-uricase Ab, usually at low titer. In responders, patients showing sustained UA lowering, mean anti-pegloticase titers at week 25 (1:837 ± 1687 with biweekly and 1:2025 ± 4506 with monthly dosing) were markedly lower than in nonresponders (1:34,528 ± 42,228 and 1:89,658 ± 297,797, respectively). Nonresponder status was associated with reduced serum pegloticase concentrations. Baseline anti-pegloticase Ab, evident in 15% (31/212) of patients, did not predict subsequent loss of urate-lowering response. Loss of sUA response preceded IRs in 44 of 56 (79%) pegloticase-treated patients.

conclusionsLoss of responsiveness to pegloticase is associated with the development of high titer anti-pegloticase Ab that increase clearance of pegloticase and are associated with a loss of the sUA lowering effect and increased IR risk. Pre-infusion sUA can be used as a surrogate for the presence of deleterious anti-pegloticase Ab.

trial registrationNCT00325195. Registered 10 May 2006, NCT01356498. Registered 27 October 2008.

Indexed as

AntibodiesChronic DiseaseEnzyme-Linked Immunosorbent AssayGoutHumansPolyethylene GlycolsUrate OxidaseAntibodiesPegloticasePolyethylene GlycolsUrate Oxidase

Identifiers

PMID24588936
PMCPMC4060440
OpenAlexW2155024437

What OpenQuestion holds

Textmetadata
LicenceCC BY
Read underepoch 390

Registered trials

Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.