Evidence map›Paper›PMID 30206821›Full record

ArticleAdvances in therapy2018

Predicting Responses to Pregabalin for Painful Diabetic Peripheral Neuropathy Based on Trajectory-Focused Patient Profiles Derived from the First 4 Weeks of Treatment.

Roger A Edwards, Gianluca Bonfanti, Roberto Grugni, Luigi Manca, Bruce Parsons, Joe Alexander

4 registry-linked trialsOpen access · hybridAbstract read
In one paragraph

Article in Advances in therapy, 2018. The graph could read no effect estimate from its abstract, so it casts no vote on the map. It is linked to 4 registered trials, which are not on this map. Cited by 1 paper, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
1citing papers in PubMed, 1 pooled it
–field-weighted citation impact, top 86% 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.

NCT00143156 phase3completednot on this map

A Randomized, Double-Blind, Placebo-Controlled, Parallel-Group, Multi-Center Trial of Pregabalin Versus Placebo in the Treatment of Neuropathic Pain Associated With Diabetic Peripheral Neuropathy

TypeinterventionalSponsorPfizer's Upjohn has merged with Mylan to form Viatris Inc.Ran2005 to 2007Enrolled450ConditionsDiabetic NeuropathiesArmspregabalin
NCT00156078 phase4completednot on this map

A 14-Week, Double-Blind, Randomized, Placebo-Controlled, Multicenter Study To Evaluate The Safety And Efficacy Of Pregabalin (150mg-600mg/Day) Using A Flexible Optimal Dose Schedule In Patients With Painful Diabetic Peripheral Neuropathy (DPN).

TypeinterventionalSponsorPfizer's Upjohn has merged with Mylan to form Viatris Inc.Ran2005 to 2007Enrolled450ConditionsDiabetic Neuropathy, PainfulArmspregabalin
NCT00159679 phase4completednot on this map

A 13 Week, Double-Blind, Placebo-Controlled Phase 4 Trial of Pregabalin (CI-1008, 600 mg/Day) for Relief of Pain in Subjects With Painful Diabetic Peripheral Neuropathy

TypeinterventionalSponsorPfizer's Upjohn has merged with Mylan to form Viatris Inc.Ran2004 to 2005Enrolled167ConditionsDiabetic Neuropathy, PainfulArmsPregabalin
NCT00553475 phase3completednot on this map

Randomized, Double-Blind, Multicenter, Placebo-Controlled Study To Evaluate Efficacy And Safety Of Pregabalin (CI-1008) In The Treatment For Pain Associated With Diabetic Peripheral Neuropathy

TypeinterventionalSponsorPfizer's Upjohn has merged with Mylan to form Viatris Inc.Ran2007 to 2009Enrolled314ConditionsDiabetic Neuropathy, PainfulArmsplacebo, pregabalin
3 · Its place in the literature

Who cites it

1 citing paper in PubMed, 1 synthesis or guideline pooled it, 5 citations in OpenAlex.

  1. Moving towards the use of artificial intelligence in pain management.European journal of pain (London, England) · 2025
    Pooled it
4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

6 authors at 2 institutions in 2 countries.

Roger A EdwardsHealth Services Consulting Corporation, 169 Summer Road, Boxborough, MA, 01719, USA.
Gianluca BonfantiFair Dynamics Consulting, srl, Via Carlo Farini 5, 20154, Milan, Italy.
Roberto GrugniFair Dynamics Consulting, srl, Via Carlo Farini 5, 20154, Milan, Italy.
Luigi MancaFair Dynamics Consulting, srl, Via Carlo Farini 5, 20154, Milan, Italy.
Bruce ParsonsPfizer Inc, 235 E 42nd St, New York, NY, 10017, USA.
Joe AlexanderPfizer Inc, 235 E 42nd St, New York, NY, 10017, USA. joe.alexander.jr@pfizer.com.
FIT Consulting (Italy) · ITPfizer (United States) · US

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

introductionPrediction of final clinical outcomes based on early weeks of treatment can enable more effective patient care for chronic pain. Our goal was to predict, with at least 90% accuracy, 12- to 13-week outcomes for pregabalin-treated painful diabetic peripheral neuropathy (pDPN) patients based on 4 weeks of pain and pain-related sleep interference data.

methodsWe utilized active treatment data from six placebo-controlled randomized controlled trials (n = 939) designed to evaluate efficacy of pregabalin for reducing pain in patients with pDPN. We implemented a three-step, trajectory-focused analytics approach based upon patient responses collected during the first 4 weeks using monotonicity, path length, frequency domain (FD), and k-nearest neighbor (kNN) methods. The first two steps were based on combinations of baseline pain, pain at 4 weeks, weekly monotonicity and path length during the first 4 weeks, and assignment of patients to one of four responder groups (based on presence/absence of 50% or 30% reduction from baseline pain at 4 and at 12/13 weeks). The third step included agreement between prediction of logistic regression of daily FD amplitudes and assignment made from kNN analyses.

resultsStep 1 correctly assigned 520/939 patients from the six studies to a responder group using a 3-metric combination approach based on unique assignment to a 50% responder group. Step 2 (applied to the remaining 419 patients) predicted an additional 121 patients, using a blend of 50% and 30% responder thresholds. Step 3 (using a combination of FD and kNN analyses) predicted 204 of the remaining 298 patients using the 50% responder threshold. Our approach correctly predicted 90.0% of all patients.

conclusionBy correctly predicting 12- to 13-week responder outcomes with 90% accuracy based on responses from the first month of treatment, we demonstrated the value of trajectory measures in predicting pDPN patient response to pregabalin.

trial registrationwww.clinicaltrials.gov identifiers, NCT00156078/NCT00159679/NCT00143156/NCT00553475.

fundingPfizer. Plain language summary available for this article.

Indexed as

PregabalinAnalgesicsChronic PainDiabetic NeuropathiesFemalegamma-Aminobutyric AcidHumansMaleMiddle AgedPain MeasurementPredictive Value of TestsPrognosisRandomized Controlled Trials as TopicSleep DeprivationSynaptic TransmissionTreatment OutcomeAnalgesicsgamma-Aminobutyric AcidPregabalinFrequency domainK-nearest neighbor (kNN)MonotonicityPainful diabetic peripheral neuropathy (pDPN)PregabalinTrajectory prediction

Identifiers

PMID30206821
PMCPMC6182642
OpenAlexW2891320805

What OpenQuestion holds

Textmetadata
LicenceCC BY-NC
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.