chemotherapy-induced peripheral neuropathy (cipn ... smith...peripheral nerve drg c-fiber a-beta...
TRANSCRIPT
Ellen Lavoie Smith PhD, APRN, AOCN, FAAN Associate Professor
PhD Program Director University of Michigan School of Nursing
Chemotherapy-InducedPeripheralNeuropathy(CIPN)Measurement
Approaches
Faculty Disclosure
Company Name Honoraria/ Expenses
Consulting/ Advisory Board
Funded Research
Royalties/ Patent
Stock Options
Ownership/ Equity
Position Employee Other
(please specify)
Mundipharma x
ASCO x
Columbia University x
No, nothing to disclose x Yes, please specify:
MeasurementChallenges
• Don’ttell,don’task• Lackskills• Nostandardizedapproach• Lackaccesstobestmeasures• Hardwireduseofunreliablegradingscales
– Under-es?mateseverity– Measurementerrorinclinicaltrials
Hershman,etal.,2014;Gewandter,etal.,2017;Postma,etal.,1998;Griffith,etal.,
2010;CavaleP,etal.,2010;Smith,etal.,2013;Albers,etal.,2011
NeurotoxicDrugs&OurNervousSystems
Injury
Descendingpathway
Peripheralnerve DRG
C-fiber
A-betafiberA-deltafiber
Ascendingpathways
Dorsalhorn
Brain
Spinalcord
AdaptedwithpermissionfromWebMDScien?ficAmericanMedicine.
MeasurementApproaches
• Thereisno“goldstandard”approachforclinicalandresearchsePngs.
• Acomprehensiveapproachimprovesvalidity.– Objec?vemeasurementoflargeandsmallfibers– Distaltoproximalextension– Pa?ent-reportedoutcomes(PRO)– Func?onassessment
• Musthavestrongpsychometricproper?es
England,etal.,2005;EFNS/PNS,2010;Alber?,etal.,2014;Griffith,etal.,2010;CavaleP,etal.,2010
ObjecGveMeasuresClinicalneurologicexam,quan?ta?vesensorytes?ng(QST),nerveconduc?onstudies(NCS),electromyography(EMG),skinbiopsy
Advantages DisadvantagesQuan?fiesactualnervedamage Requirespecializedtraining&
equipmentAssessespre-clinicalsigns NCS&EMG-largefibersUsefulinmechanis?cstudies Skinbiopsy–smallfibersMaybeimportantfordiagnosisincomplexcases
QST,NCS,EMG&biopsyarecostly,inconvenient,painful,?me-consuming,&maynotbereimbursedQST–?reliabilityPoorcorrela?onwithpa?entreportEngland,etal.,2005,Ruppert,etal.,2003;EFNS/PNS,2010;Smith,etal.,2008;Alber?,etal.,2014
TotalNeuropathyScore(TNS)
• Theonlycomprehensivecompositetooltobeextensivelytestedinpa?entsreceivingneurotoxicchemotherapy– Reliable,valid,sensi?ve,&responsive
• Mul?dimensional– Symptoms-ProximalExtensionTingling,Numbness,Pain– Signs–e.g.,Reflexes,Vibra?on&PinSensibility,Strength– NCSandQST-Op?onal
• Abbreviatedversionscanbeusedinclinicalprac?cetoassessadultsandchildren.
Griffith,etal.,2010;CavaleP,etal.,2007,2010,2013;Smith,etal.,2008,2010,2011,2013;Wampler,etal.,2006;Gilchristetal.,2009
TNS-PVResponsiveness
0
1
2
3
4
5
6
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15
MeanScores
TNSVersusGradingScaleScoresbyWeek
TNSTotal(A)
TNSTotal(B)
CTCMotor
CTCSensory
BalisMotor
BalisSensory
Smith,etal.,2013
N=65
• Sample:Childrenages1-18receivingvincris?neforALL
Month
TesGngVibraGonSensibility
Useweighted128HzTuningFork
Feasibletoperforminindividuals>6yearsofage
Smith,etal.,2013,CancerNursing;Smithetal.,2013,ClinicalJournalofOncologyNursing
GradingScaleProblems• OKforscreeningbut...• Under-reportsseveritywhencomparedtopa?entreport
• Poorsensi?vity&responsiveness• Noopera?onaldefini?ons,poorreliability• Impreciselycapturesprogression
– Preclinicalandclinicalsigns/sxinsamegrade– Distaltoproximalextension– Whataboutpain?
Postma,etal.,1998;Griffith,etal.,2010;CavaleP,etal.,2007,2010,2013;Smith,etal.,2010,2011;Baschetal.,2006,2009,2010;Atkinson,etal.,2016
NaGonalCancerInsGtute(NCI)CTCAEV.4.0MandatedinallNCI-SponsoredTrials
Grade0 Grade1 Grade2 Grade3 Grade4 Grade5
Nosignsorsymptoms
Asymptoma?c:lossofdeep
tendonreflexesorparesthesia
Moderatesymptoms:limi?ng
instrumentalADL
Severesymptoms:limi?ngselfcareADL
Life-threatening
consequences:urgent
interven?onindicated
Death
SensoryNeuropathy
Published:May28,2009(v4.02:Sept.15,2009)Na?onalIns?tutesofHealth;Na?onalCancerIns?tute
PROMeasuresSevenMeasures:ThemostextensivelytestedaretheFACT-GOG/NTX&EORTCQLQ-CIPN20. Advantages DisadvantagesCapturesthepa?ent’sexperiencebererthanprovider-ratedscales
Doesn’tcapturepre-clinicalsigns
Canbecollectedelectronically Pa?entburden,?Workflow
Extensivelytested,mul?pletransla?ons
Lackofsystemstointegrate&visualizescoreswithinEMRsystems
Doesn’trequirespecialtrainingandeaseofuseinmul?sitetrials
Noreimbursementincen?vefrompayersdespitesurvivalbenefit
SomeassessspecificCIPNtypes(i.e.,taxane,oxalipla?n)
Sufficientlytested?Areallitemsgoodandnecessary?
Curcioetal.,2017;Griffith,etal.,2010;CavaleP,etal.,2010;Haryani,etal.,2017;Basch,etal.,2016,2017;Atkinson,etal.,2016
Nostandardforuseinprac?ceorclinicaltrials
ComparisonofFACTGOG/NTXwithCIPN20FACTGOG/NTX/NTX12 QLQ-CIPN20
NumberofStudies 10 9
Popula?ons NRange20–395US,European,Asian,African
VariousCancers
NRange25–1155US,European,AsianVariousCancers
Proper?esTested ICR,Contras?ngGroup,Content,Structural,Contras?ngGroups,&ConvergentValidity,Sensi?vity&
Specificity,Responsiveness
ICR&Test-RetestReliability;Content,Structural,Contras?ngGroup,&ConvergentValidity,Sensi?vity,
Responsiveness,ModeEquivalence,ItemResponse
Languages Numerous Numerous
NeuropathyTypes Taxanes,Pla?nums,Vinblas?ne,Bortezomib
Taxanes,Pla?nums,Vincas,Bortezomib
Strengths Feasibleformul?sitetrialsBrief(11/12-items,4-items)
Feasibleformul?sitetrialsBrief(20-items)butlongerthanFACT.
Weaknesses Someitemsmaynotbeneuropathy-specific
LackofConsensusAboutAutonomic&Drivingitems;Disorderedresponse
thresholds
PRO-CTCAE-NeuropathyWhatwastheSEVERITYofyourNUMBNESSORTINGLINGINYOURHANDSORFEETatitsWORSTinthepast7days?HowmuchdidNUMBNESSORTINGLINGINYOURHANDSORFEETINTERFEREwithyourusualordailyac?vi?esinthepast7days?
1NotAtAll
2 34
VeryMuch
ConcurrentvaliditywhencomparedtoQLQCIPN20
Knoerletal.,2017
FuncGonMeasuresExamples:TimedUp-and-Go(TUG),9-HolePegTest,BumpsTest
Advantages DisadvantagesAssessesfunc?onaloutcomessuchaswalkingandbalance,handdexterityandsensoryfunc?on.
Requiresspecialtrainingandequipment
UsefulforresearchsePngs Time-consumingLimitedpsychometrictes?nginCIPN
Kennedy,etal.,2011;Stubblefield,etal.,2009;Manniletal.,2014;Gilchrist,etal.,2016;Caronni,etal.,2016
Summary
NoConsensusAboutMeasurementApproachesButManyGoodOp?ons
Assess:AtBaseline,DuringRx,&InSurvivors
Prac?ceSePngs:CTCAE
PRO-CTCAE5-itemTNS
ResearchSePngs:Objec?veMeasuresFACTGOG/NTXor
QLQ-CIPN20Func?onalMeasures
PRO-CTCAE