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Prevention And Treatment Of Chemotherapy-Induced Peripheral Neuropathy In Subjects With Advanced Colorectal Cancer

A Randomized, Double-Blind, Placebo-Controlled Trial Of The Prevention And Treatment Of Chemotherapy-Induced Peripheral Neuropathy Symptoms In Subjects With Advanced Colorectal Cancer

Status
Terminated
Phases
Phase 4
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT00380874
Enrollment
64
Registered
2006-09-27
Start date
2007-01-31
Completion date
2008-03-31
Last updated
2021-02-11

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Chemotherapy-Induced Peripheral Neuropathy

Keywords

Pain, chemotherapy

Brief summary

Prevention and treatment of the severity of symptoms of chemotherapy-induced peripheral neuropathy.

Detailed description

This study was terminated on July 15, 2008. The results of an interim analysis showed that the conditional power to detect a difference in treatment groups was insufficient to warrant study continuation and therefore termination of the trial was recommended. The decision to terminate the trial was not based on safety concerns.

Interventions

DRUGPregabalin

150- 600 mg/day (double blind in divided doses)

DRUGPlacebo

Placebo

Sponsors

Pfizer's Upjohn has merged with Mylan to form Viatris Inc.
Lead SponsorINDUSTRY

Study design

Allocation
RANDOMIZED
Intervention model
PARALLEL
Primary purpose
TREATMENT
Masking
DOUBLE (Subject, Investigator)

Eligibility

Sex/Gender
ALL
Age
18 Years to 80 Years
Healthy volunteers
No

Inclusion criteria

* Diagnosis of cytological confirmed carcinoma of the Colon Stage III (Dukes C) or metastatic Colorectal Cancer (Dukes D) * Independent of this protocol, the patient has decided to receive standard of care for the treatment of cancer with oxaliplatin combined with 5-fluorouracil/folinic acid (5-FU/FA) for a minimum of 9 cycles

Exclusion criteria

* Presence of neuropathic pain or peripheral polyneuropathy or identified causes of painful paresthesia including radiotherapy-induced or malignant plexopathy, lumbar or cervical radiculopathy existing prior to baseline * Any patients who are not suitable to be treated with either Oxaliplatin and/or 5-FU/FA or pregabalin according to the respective local labeling

Design outcomes

Primary

MeasureTime frameDescription
Duration Adjusted Average Change (DAAC) of Paresthesia From the Onset of Chemotherapy Measured by Numeric Rating Scale (NRS)Period of 10 days from the onset of chemotherapy to the last cycle: Last Observation Carried Forward (LOCF)Least squares mean of change: mean at cycle minus mean at Baseline. Paresthetic duration Adjusted Average Change (DAAC) endpoint was computed based on Numeric Rating Scale (NRS) of paresthesia (collected 0=no pain; 1-3=mild pain; 4-6=moderate pain; 7-10=severe pain). DAAC endpoint is defined as the Area Under Curve (AUC) of the collected NRS over time, divided by the collection time period (up to 10 days).

Secondary

MeasureTime frameDescription
Duration Adjusted Average Change (DAAC) of Paresthesic Symptom Score Within Each Cycle of Chemotherapy Measured by Numeric Rating Scale (NRS)Baseline to Cycle 9Least squares mean of change: mean at cycle minus mean at Baseline. Paresthetic Duration Adjusted Average Change (DAAC) endpoint was computed based on Numeric Rating Scale (NRS) of paresthesia (collected 0=no pain; 1-3=mild pain; 4-6=moderate pain; 7-10=severe pain). DAAC endpoint is defined as the Area Under Curve (AUC) of the collected NRS over time, divided by collection time period (up to 10 days).
Duration Adjusted Average Change (DAAC) of Dysesthesia Symptom Score Within Each Cycle of Chemotherapy Measured by Numeric Rating Scale (NRS)Baseline to Cycle 9, LOCF cycle endpointLeast squares (LS) mean of change: mean at cycle minus mean at Baseline. Dysesthesic Duration Adjusted Average Change (DAAC) endpoint was computed based on Numeric Rating Scale (NRS) of dysesthesis (collected 0=no pain; 1-3=mild pain; 4-6=moderate pain; 7-10=severe pain). DAAC endpoint was defined as the Area Under Curve (AUC) of the collected NRS over time, divided by collection time period (up to 10 days).
Duration Adjusted Average Change (DAAC) of Pain Symptom Score Within Each Cycle of Chemotherapy Measured by Numeric Rating Scale (NRS)Baseline to Cycle 9, LOCF cycle endpointLeast squares (LS) mean of change: mean at cycle minus mean at Baseline. Pain Duration Adjusted Average Change (DAAC) endpoint was computed based on Numeric Rating Scale (NRS) of pain (collected 0=no pain; 1-3=mild pain; 4-6=moderate pain; 7-10=severe pain). DAAC endpoint was defined as the Area Under Curve (AUC) of the collected NRS over time, divided by collection time period (up to 10 days).
Change in Pain Scores Rated on Neuropathic Pain Symptom Inventory (NPSI) Subscales From Baseline CycleBaseline to Cycle 9, Last Observation Carried Forward (LOCF) cycle endpointLeast squares (LS) mean of change: mean at cycle minus mean at Baseline. Neuropathic Pain Symptom Inventory (NPSI) = questionnaire designed to evaluate symptoms of neuropathic pain. 11-point numeric rating scale, range: 0 (no pain) to 10 (worst pain imaginable) best describing their average pain for last 24 hours.
Number of Participants With Persistent Paresthesic, Dysesthesic, and Pain SymptomsCycle 9 and Last Observation Carried Forward (LOCF) cycle endpointNumber of participants with persistent paresthesic, dyesthesic, and pain symptoms at chemotherapy Cycle 9 and last observation carried forward (LOCF) endpoint. Numeric rating scale of symptoms: \>=1: mild symptoms to \>=4: moderate severe symptoms. Subjects rated their average severity of symptoms over the last 24 hours every evening before bedtime.

Countries

Australia, Germany, Italy, South Korea, Spain, Taiwan

Participant flow

Pre-assignment details

Of the 69 subjects screened, 64 were randomized, and 61 received treatment. Of the 8 subjects screened but not treated, 1 was ineligible due to an abnormal laboratory test result, 6 were ineligible due to a reason categorized as other, and 1 was no longer willing to continue in the study.

Participants by arm

ArmCount
Pregabalin
Pregabalin 150 to 600 milligrams per day (mg/day) flexible dose + chemotherapy (oxaliplatin combined with 5-fluorouracil/folinic acid (5-FU/FA). Possible dose levels of pregabalin were 150 mg/day (75 mg capsules twice a day \[BID\]), 300 mg/day (150 mg capsules BID) or 600 mg/day (300 mg capsules BID).
32
Placebo
matching placebo + chemotherapy (oxaliplatin combined with 5-fluorouracil/folinic acid (5-FU/FA).
29
Total61

Withdrawals & dropouts

PeriodReasonFG000FG001
Overall StudyAdverse Event77
Overall StudyDeath10
Overall StudyNot related to study drug32
Overall StudyWithdrawal by Subject21

Baseline characteristics

CharacteristicPregabalinPlaceboTotal
Age, Continuous58.9 years
STANDARD_DEVIATION 11.3
56.1 years
STANDARD_DEVIATION 12.9
57.6 years
STANDARD_DEVIATION 12
Sex: Female, Male
Female
11 Participants8 Participants19 Participants
Sex: Female, Male
Male
21 Participants21 Participants42 Participants

Adverse events

Event typeEG000
affected / at risk
EG001
affected / at risk
deaths
Total, all-cause mortality
— / —— / —
other
Total, other adverse events
31 / 3227 / 29
serious
Total, serious adverse events
5 / 327 / 29

Outcome results

Primary

Duration Adjusted Average Change (DAAC) of Paresthesia From the Onset of Chemotherapy Measured by Numeric Rating Scale (NRS)

Least squares mean of change: mean at cycle minus mean at Baseline. Paresthetic duration Adjusted Average Change (DAAC) endpoint was computed based on Numeric Rating Scale (NRS) of paresthesia (collected 0=no pain; 1-3=mild pain; 4-6=moderate pain; 7-10=severe pain). DAAC endpoint is defined as the Area Under Curve (AUC) of the collected NRS over time, divided by the collection time period (up to 10 days).

Time frame: Period of 10 days from the onset of chemotherapy to the last cycle: Last Observation Carried Forward (LOCF)

Population: Intent-to-Treat (ITT) population: subjects with at least 1 dose of study medication and for whom at least 1 post-baseline efficacy evaluation was obtained; Last Observation Carried Forward (LOCF): last recorded cycle. Primary analysis timeframe: 10 days of paresthesia scores from the onset of chemotherapy to the last cycle of chemotherapy (LOCF).

ArmMeasureValue (LEAST_SQUARES_MEAN)Dispersion
PregabalinDuration Adjusted Average Change (DAAC) of Paresthesia From the Onset of Chemotherapy Measured by Numeric Rating Scale (NRS)1.11 score on scaleStandard Error 0.35
PlaceboDuration Adjusted Average Change (DAAC) of Paresthesia From the Onset of Chemotherapy Measured by Numeric Rating Scale (NRS)1.27 score on scaleStandard Error 0.34
Comparison: LOCF cycle endpoint. Sample size based on original primary efficacy parameter (PEP) of time to persistent symptoms (developing in 35% of pregabalin subjects \& 60% of placebo subjects). Assuming Type I error rate of 0.05 and a 2-sided log-rank test for equality of time to persistent symptoms survival curves, study would have had at least 90% power using 100 subjects per treatment group. Original PEP was modified to secondary due to lack of persistent paresthetic symptom emergence.p-value: 0.7489ANCOVA
Secondary

Change in Pain Scores Rated on Neuropathic Pain Symptom Inventory (NPSI) Subscales From Baseline Cycle

Least squares (LS) mean of change: mean at cycle minus mean at Baseline. Neuropathic Pain Symptom Inventory (NPSI) = questionnaire designed to evaluate symptoms of neuropathic pain. 11-point numeric rating scale, range: 0 (no pain) to 10 (worst pain imaginable) best describing their average pain for last 24 hours.

Time frame: Baseline to Cycle 9, Last Observation Carried Forward (LOCF) cycle endpoint

Population: ITT population: subjects with at least 1 dose of study medication and for whom at least 1 post-baseline efficacy evaluation was obtained.

ArmMeasureGroupValue (LEAST_SQUARES_MEAN)Dispersion
PregabalinChange in Pain Scores Rated on Neuropathic Pain Symptom Inventory (NPSI) Subscales From Baseline CycleParoxysmal pain Cycle 8 (n=18,21)0.63 score on scaleStandard Error 0.25
PregabalinChange in Pain Scores Rated on Neuropathic Pain Symptom Inventory (NPSI) Subscales From Baseline CycleBurning spontaneous pain Cycle 5 (n=26,24)0.06 score on scaleStandard Error 0.08
PregabalinChange in Pain Scores Rated on Neuropathic Pain Symptom Inventory (NPSI) Subscales From Baseline CycleParoxysmal pain Cycle 9 (n=18,20)0.18 score on scaleStandard Error 0.17
PregabalinChange in Pain Scores Rated on Neuropathic Pain Symptom Inventory (NPSI) Subscales From Baseline CycleBurning spontaneous pain Cycle 8 (n=19,21)0.53 score on scaleStandard Error 0.22
PregabalinChange in Pain Scores Rated on Neuropathic Pain Symptom Inventory (NPSI) Subscales From Baseline CycleParoxysmal pain LOCF endpoint (n=28,27)0.11 score on scaleStandard Error 0.1
PregabalinChange in Pain Scores Rated on Neuropathic Pain Symptom Inventory (NPSI) Subscales From Baseline CyclePressing spontaneous pain Cycle 7 (n=32,29)0.26 score on scaleStandard Error 0.18
PregabalinChange in Pain Scores Rated on Neuropathic Pain Symptom Inventory (NPSI) Subscales From Baseline CycleEvoke pain Cycle 2 (n=28,27)0.04 score on scaleStandard Error 0.06
PregabalinChange in Pain Scores Rated on Neuropathic Pain Symptom Inventory (NPSI) Subscales From Baseline CycleBurning spontaneous pain Cycle 9 (n=19,20)0.54 score on scaleStandard Error 0.28
PregabalinChange in Pain Scores Rated on Neuropathic Pain Symptom Inventory (NPSI) Subscales From Baseline CycleEvoke pain Cycle 4 (n=28,24)0.15 score on scaleStandard Error 0.08
PregabalinChange in Pain Scores Rated on Neuropathic Pain Symptom Inventory (NPSI) Subscales From Baseline CycleParesthesia/dysesthesia pain Cycle 2 (n=28,27)9.25 score on scaleStandard Error 0.08
PregabalinChange in Pain Scores Rated on Neuropathic Pain Symptom Inventory (NPSI) Subscales From Baseline CycleEvoke pain Cycle 5 (n=26,24)0.18 score on scaleStandard Error 0.14
PregabalinChange in Pain Scores Rated on Neuropathic Pain Symptom Inventory (NPSI) Subscales From Baseline CycleBurning spontaneous pain LOCF endpoint (n=29,27)0.33 score on scaleStandard Error 0.18
PregabalinChange in Pain Scores Rated on Neuropathic Pain Symptom Inventory (NPSI) Subscales From Baseline CycleEvoke pain Cycle 6 (n=24,24)0.49 score on scaleStandard Error 0.28
PregabalinChange in Pain Scores Rated on Neuropathic Pain Symptom Inventory (NPSI) Subscales From Baseline CyclePressing spontaneous pain LOCF endpoint (n=29,27)0.15 score on scaleStandard Error 0.06
PregabalinChange in Pain Scores Rated on Neuropathic Pain Symptom Inventory (NPSI) Subscales From Baseline CycleEvoke pain Cycle 7 (n=21,22)0.99 score on scaleStandard Error 0.26
PregabalinChange in Pain Scores Rated on Neuropathic Pain Symptom Inventory (NPSI) Subscales From Baseline CyclePressing spontaneous pain Cycle 2 (n=28,27)-0.01 score on scaleStandard Error 0.04
PregabalinChange in Pain Scores Rated on Neuropathic Pain Symptom Inventory (NPSI) Subscales From Baseline CycleEvoke pain Cycle 8 (n=19,20)1.05 score on scaleStandard Error 0.36
PregabalinChange in Pain Scores Rated on Neuropathic Pain Symptom Inventory (NPSI) Subscales From Baseline CycleParesthesia/dysesthesia pain Cycle 3(n=28,23)0.34 score on scaleStandard Error 0.1
PregabalinChange in Pain Scores Rated on Neuropathic Pain Symptom Inventory (NPSI) Subscales From Baseline CycleEvoke pain Cycle 9 (n=19,20)0.74 score on scaleStandard Error 0.26
PregabalinChange in Pain Scores Rated on Neuropathic Pain Symptom Inventory (NPSI) Subscales From Baseline CyclePressing spontaneous pain Cycle 3 (n=28,24)0.05 score on scaleStandard Error 0.03
PregabalinChange in Pain Scores Rated on Neuropathic Pain Symptom Inventory (NPSI) Subscales From Baseline CycleEvoke pain LOCF endpoint (n=29,27)0.46 score on scaleStandard Error 0.18
PregabalinChange in Pain Scores Rated on Neuropathic Pain Symptom Inventory (NPSI) Subscales From Baseline CycleParesthesia/dysesthesia pain Cycle 4 (n=28,24)0.43 score on scaleStandard Error 0.11
PregabalinChange in Pain Scores Rated on Neuropathic Pain Symptom Inventory (NPSI) Subscales From Baseline CycleBurning spontaneous pain Cycle 6 (n=24,24)0.28 score on scaleStandard Error 0.12
PregabalinChange in Pain Scores Rated on Neuropathic Pain Symptom Inventory (NPSI) Subscales From Baseline CycleParesthesia/dysesthesia pain Cycle 5(n=26,24)0.60 score on scaleStandard Error 0.15
PregabalinChange in Pain Scores Rated on Neuropathic Pain Symptom Inventory (NPSI) Subscales From Baseline CyclePressing spontaneous pain Cycle 4 (n=28,23)0.03 score on scaleStandard Error 0.08
PregabalinChange in Pain Scores Rated on Neuropathic Pain Symptom Inventory (NPSI) Subscales From Baseline CycleParesthesia/dysesthesia pain Cycle 6 (n=24,23)0.68 score on scaleStandard Error 0.23
PregabalinChange in Pain Scores Rated on Neuropathic Pain Symptom Inventory (NPSI) Subscales From Baseline CycleTotal Score Cycle 6(n=22,23)0.02 score on scaleStandard Error 0.01
PregabalinChange in Pain Scores Rated on Neuropathic Pain Symptom Inventory (NPSI) Subscales From Baseline CycleParesthesia/dysesthesia pain Cycle 7 (n=21,22)0.78 score on scaleStandard Error 0.23
PregabalinChange in Pain Scores Rated on Neuropathic Pain Symptom Inventory (NPSI) Subscales From Baseline CyclePressing spontaneous pain Cycle 5 (n=26,24)0.06 score on scaleStandard Error 0.04
PregabalinChange in Pain Scores Rated on Neuropathic Pain Symptom Inventory (NPSI) Subscales From Baseline CycleParesthesia/dysesthesia pain Cycle 8 (n=19,21)1.09 score on scaleStandard Error 0.34
PregabalinChange in Pain Scores Rated on Neuropathic Pain Symptom Inventory (NPSI) Subscales From Baseline CycleBurning spontaneous pain Cycle 3 (n=27,27)0.09 score on scaleStandard Error 0.06
PregabalinChange in Pain Scores Rated on Neuropathic Pain Symptom Inventory (NPSI) Subscales From Baseline CycleParesthesia/dyesthesia pain Cycle 9 (n=18,20)1.17 score on scaleStandard Error 0.36
PregabalinChange in Pain Scores Rated on Neuropathic Pain Symptom Inventory (NPSI) Subscales From Baseline CyclePressing spontaneous pain Cycle 6 (n=24,24)0.09 score on scaleStandard Error 0.05
PregabalinChange in Pain Scores Rated on Neuropathic Pain Symptom Inventory (NPSI) Subscales From Baseline CycleParesthesia/dyesthesia pain LOCF endpt (n=29,27)0.83 score on scaleStandard Error 0.24
PregabalinChange in Pain Scores Rated on Neuropathic Pain Symptom Inventory (NPSI) Subscales From Baseline CyclePressing spontaneous pain Cycle 9 (n=19,200.25 score on scaleStandard Error 0.09
PregabalinChange in Pain Scores Rated on Neuropathic Pain Symptom Inventory (NPSI) Subscales From Baseline CycleTotal Score Cycle 2 (n=27,27)0.00 score on scaleStandard Error 0
PregabalinChange in Pain Scores Rated on Neuropathic Pain Symptom Inventory (NPSI) Subscales From Baseline CycleParoxysmal pain Cycle 3 (n=27,24)0.00 score on scaleStandard Error 0.01
PregabalinChange in Pain Scores Rated on Neuropathic Pain Symptom Inventory (NPSI) Subscales From Baseline CycleTotal Score Cycle 3 (n=27,24)0.01 score on scaleStandard Error 0
PregabalinChange in Pain Scores Rated on Neuropathic Pain Symptom Inventory (NPSI) Subscales From Baseline CyclePressing spontaneous pain Cycle 8 (n=19,21)0.39 score on scaleStandard Error 0.15
PregabalinChange in Pain Scores Rated on Neuropathic Pain Symptom Inventory (NPSI) Subscales From Baseline CycleTotal Score Cycle 4(n=27,23)0.01 score on scaleStandard Error 0
PregabalinChange in Pain Scores Rated on Neuropathic Pain Symptom Inventory (NPSI) Subscales From Baseline CycleParoxysmal pain Cycle 4 (n=28,24)0.06 score on scaleStandard Error 0.06
PregabalinChange in Pain Scores Rated on Neuropathic Pain Symptom Inventory (NPSI) Subscales From Baseline CycleTotal Score Cycle 5 (n=25,24)0.01 score on scaleStandard Error 0
PregabalinChange in Pain Scores Rated on Neuropathic Pain Symptom Inventory (NPSI) Subscales From Baseline CycleBurning spontaneous pain Cycle 4 (n=28,23)0.02 score on scaleStandard Error 0.09
PregabalinChange in Pain Scores Rated on Neuropathic Pain Symptom Inventory (NPSI) Subscales From Baseline CycleParoxysmal pain Cycle 5 (n=25,24)0.06 score on scaleStandard Error 0.07
PregabalinChange in Pain Scores Rated on Neuropathic Pain Symptom Inventory (NPSI) Subscales From Baseline CycleTotal Score Cycle 7 (n=18,23)0.03 score on scaleStandard Error 0.02
PregabalinChange in Pain Scores Rated on Neuropathic Pain Symptom Inventory (NPSI) Subscales From Baseline CycleParoxysmal pain Cycle 6 (n=22,23)0.08 score on scaleStandard Error 0.09
PregabalinChange in Pain Scores Rated on Neuropathic Pain Symptom Inventory (NPSI) Subscales From Baseline CycleTotal Score Cycle 8(n=18,20)0.04 score on scaleStandard Error 0.01
PregabalinChange in Pain Scores Rated on Neuropathic Pain Symptom Inventory (NPSI) Subscales From Baseline CycleEvoke pain Cycle 3 (n=28,23)0.17 score on scaleStandard Error 0.11
PregabalinChange in Pain Scores Rated on Neuropathic Pain Symptom Inventory (NPSI) Subscales From Baseline CycleTotal Score Cycle 9 (n=17,20)0.03 score on scaleStandard Error 0.01
PregabalinChange in Pain Scores Rated on Neuropathic Pain Symptom Inventory (NPSI) Subscales From Baseline CycleParoxysmal pain Cycle 7(n=19,23)0.36 score on scaleStandard Error 0.17
PregabalinChange in Pain Scores Rated on Neuropathic Pain Symptom Inventory (NPSI) Subscales From Baseline CycleTotal Score Cycle LOCF Endpoint (n=28,27)0.02 score on scaleStandard Error 0.01
PregabalinChange in Pain Scores Rated on Neuropathic Pain Symptom Inventory (NPSI) Subscales From Baseline CycleBurning spontaneous pain Cycle 7 (n=21,23)0.42 score on scaleStandard Error 0.25
PlaceboChange in Pain Scores Rated on Neuropathic Pain Symptom Inventory (NPSI) Subscales From Baseline CycleTotal Score Cycle LOCF Endpoint (n=28,27)0.02 score on scaleStandard Error 0.01
PlaceboChange in Pain Scores Rated on Neuropathic Pain Symptom Inventory (NPSI) Subscales From Baseline CycleBurning spontaneous pain Cycle 5 (n=26,24)0.19 score on scaleStandard Error 0.08
PlaceboChange in Pain Scores Rated on Neuropathic Pain Symptom Inventory (NPSI) Subscales From Baseline CyclePressing spontaneous pain Cycle 6 (n=24,24)0.09 score on scaleStandard Error 0.05
PlaceboChange in Pain Scores Rated on Neuropathic Pain Symptom Inventory (NPSI) Subscales From Baseline CyclePressing spontaneous pain Cycle 7 (n=32,29)0.30 score on scaleStandard Error 0.17
PlaceboChange in Pain Scores Rated on Neuropathic Pain Symptom Inventory (NPSI) Subscales From Baseline CyclePressing spontaneous pain Cycle 8 (n=19,21)0.12 score on scaleStandard Error 0.15
PlaceboChange in Pain Scores Rated on Neuropathic Pain Symptom Inventory (NPSI) Subscales From Baseline CyclePressing spontaneous pain Cycle 9 (n=19,200.14 score on scaleStandard Error 0.08
PlaceboChange in Pain Scores Rated on Neuropathic Pain Symptom Inventory (NPSI) Subscales From Baseline CyclePressing spontaneous pain LOCF endpoint (n=29,27)0.08 score on scaleStandard Error 0.06
PlaceboChange in Pain Scores Rated on Neuropathic Pain Symptom Inventory (NPSI) Subscales From Baseline CycleParoxysmal pain Cycle 5 (n=25,24)0.017 score on scaleStandard Error 0.07
PlaceboChange in Pain Scores Rated on Neuropathic Pain Symptom Inventory (NPSI) Subscales From Baseline CycleEvoke pain Cycle 3 (n=28,23)0.07 score on scaleStandard Error 0.13
PlaceboChange in Pain Scores Rated on Neuropathic Pain Symptom Inventory (NPSI) Subscales From Baseline CycleEvoke pain LOCF endpoint (n=29,27)0.43 score on scaleStandard Error 0.19
PlaceboChange in Pain Scores Rated on Neuropathic Pain Symptom Inventory (NPSI) Subscales From Baseline CycleParesthesia/dysesthesia pain Cycle 2 (n=28,27)-0.00 score on scaleStandard Error 0.09
PlaceboChange in Pain Scores Rated on Neuropathic Pain Symptom Inventory (NPSI) Subscales From Baseline CycleParesthesia/dysesthesia pain Cycle 3(n=28,23)0.14 score on scaleStandard Error 0.11
PlaceboChange in Pain Scores Rated on Neuropathic Pain Symptom Inventory (NPSI) Subscales From Baseline CycleBurning spontaneous pain Cycle 3 (n=27,27)-0.02 score on scaleStandard Error 0.06
PlaceboChange in Pain Scores Rated on Neuropathic Pain Symptom Inventory (NPSI) Subscales From Baseline CycleBurning spontaneous pain Cycle 6 (n=24,24)0.14 score on scaleStandard Error 0.12
PlaceboChange in Pain Scores Rated on Neuropathic Pain Symptom Inventory (NPSI) Subscales From Baseline CycleBurning spontaneous pain Cycle 7 (n=21,23)0.40 score on scaleStandard Error 0.24
PlaceboChange in Pain Scores Rated on Neuropathic Pain Symptom Inventory (NPSI) Subscales From Baseline CycleBurning spontaneous pain Cycle 8 (n=19,21)0.23 score on scaleStandard Error 0.21
PlaceboChange in Pain Scores Rated on Neuropathic Pain Symptom Inventory (NPSI) Subscales From Baseline CycleBurning spontaneous pain Cycle 9 (n=19,20)0.59 score on scaleStandard Error 0.27
PlaceboChange in Pain Scores Rated on Neuropathic Pain Symptom Inventory (NPSI) Subscales From Baseline CycleBurning spontaneous pain LOCF endpoint (n=29,27)0.35 score on scaleStandard Error 19
PlaceboChange in Pain Scores Rated on Neuropathic Pain Symptom Inventory (NPSI) Subscales From Baseline CyclePressing spontaneous pain Cycle 2 (n=28,27)0.05 score on scaleStandard Error 0.04
PlaceboChange in Pain Scores Rated on Neuropathic Pain Symptom Inventory (NPSI) Subscales From Baseline CyclePressing spontaneous pain Cycle 3 (n=28,24)0.01 score on scaleStandard Error 0.03
PlaceboChange in Pain Scores Rated on Neuropathic Pain Symptom Inventory (NPSI) Subscales From Baseline CyclePressing spontaneous pain Cycle 4 (n=28,23)0.20 score on scaleStandard Error 0.09
PlaceboChange in Pain Scores Rated on Neuropathic Pain Symptom Inventory (NPSI) Subscales From Baseline CyclePressing spontaneous pain Cycle 5 (n=26,24)0.06 score on scaleStandard Error 0.04
PlaceboChange in Pain Scores Rated on Neuropathic Pain Symptom Inventory (NPSI) Subscales From Baseline CycleParoxysmal pain Cycle 3 (n=27,24)0.02 score on scaleStandard Error 0.01
PlaceboChange in Pain Scores Rated on Neuropathic Pain Symptom Inventory (NPSI) Subscales From Baseline CycleParoxysmal pain Cycle 4 (n=28,24)0.13 score on scaleStandard Error 0.07
PlaceboChange in Pain Scores Rated on Neuropathic Pain Symptom Inventory (NPSI) Subscales From Baseline CycleParoxysmal pain Cycle 6 (n=22,23)0.21 score on scaleStandard Error 0.09
PlaceboChange in Pain Scores Rated on Neuropathic Pain Symptom Inventory (NPSI) Subscales From Baseline CycleParoxysmal pain Cycle 7(n=19,23)0.35 score on scaleStandard Error 0.16
PlaceboChange in Pain Scores Rated on Neuropathic Pain Symptom Inventory (NPSI) Subscales From Baseline CycleParoxysmal pain Cycle 8 (n=18,21)0.32 score on scaleStandard Error 0.23
PlaceboChange in Pain Scores Rated on Neuropathic Pain Symptom Inventory (NPSI) Subscales From Baseline CycleParoxysmal pain Cycle 9 (n=18,20)0.38 score on scaleStandard Error 0.16
PlaceboChange in Pain Scores Rated on Neuropathic Pain Symptom Inventory (NPSI) Subscales From Baseline CycleParoxysmal pain LOCF endpoint (n=28,27)0.20 score on scaleStandard Error 0.11
PlaceboChange in Pain Scores Rated on Neuropathic Pain Symptom Inventory (NPSI) Subscales From Baseline CycleEvoke pain Cycle 2 (n=28,27)0.04 score on scaleStandard Error 0.06
PlaceboChange in Pain Scores Rated on Neuropathic Pain Symptom Inventory (NPSI) Subscales From Baseline CycleEvoke pain Cycle 4 (n=28,24)0.28 score on scaleStandard Error 0.09
PlaceboChange in Pain Scores Rated on Neuropathic Pain Symptom Inventory (NPSI) Subscales From Baseline CycleEvoke pain Cycle 5 (n=26,24)0.29 score on scaleStandard Error 0.14
PlaceboChange in Pain Scores Rated on Neuropathic Pain Symptom Inventory (NPSI) Subscales From Baseline CycleEvoke pain Cycle 6 (n=24,24)0.66 score on scaleStandard Error 0.28
PlaceboChange in Pain Scores Rated on Neuropathic Pain Symptom Inventory (NPSI) Subscales From Baseline CycleEvoke pain Cycle 7 (n=21,22)0.40 score on scaleStandard Error 0.26
PlaceboChange in Pain Scores Rated on Neuropathic Pain Symptom Inventory (NPSI) Subscales From Baseline CycleEvoke pain Cycle 8 (n=19,20)0.36 score on scaleStandard Error 0.35
PlaceboChange in Pain Scores Rated on Neuropathic Pain Symptom Inventory (NPSI) Subscales From Baseline CycleEvoke pain Cycle 9 (n=19,20)0.59 score on scaleStandard Error 0.26
PlaceboChange in Pain Scores Rated on Neuropathic Pain Symptom Inventory (NPSI) Subscales From Baseline CycleParesthesia/dysesthesia pain Cycle 4 (n=28,24)0.06 score on scaleStandard Error 0.12
PlaceboChange in Pain Scores Rated on Neuropathic Pain Symptom Inventory (NPSI) Subscales From Baseline CycleParesthesia/dysesthesia pain Cycle 5(n=26,24)0.20 score on scaleStandard Error 0.15
PlaceboChange in Pain Scores Rated on Neuropathic Pain Symptom Inventory (NPSI) Subscales From Baseline CycleParesthesia/dysesthesia pain Cycle 6 (n=24,23)0.32 score on scaleStandard Error 0.24
PlaceboChange in Pain Scores Rated on Neuropathic Pain Symptom Inventory (NPSI) Subscales From Baseline CycleParesthesia/dysesthesia pain Cycle 7 (n=21,22)0.48 score on scaleStandard Error 0.22
PlaceboChange in Pain Scores Rated on Neuropathic Pain Symptom Inventory (NPSI) Subscales From Baseline CycleParesthesia/dysesthesia pain Cycle 8 (n=19,21)0.58 score on scaleStandard Error 0.32
PlaceboChange in Pain Scores Rated on Neuropathic Pain Symptom Inventory (NPSI) Subscales From Baseline CycleParesthesia/dyesthesia pain Cycle 9 (n=18,20)0.85 score on scaleStandard Error 0.34
PlaceboChange in Pain Scores Rated on Neuropathic Pain Symptom Inventory (NPSI) Subscales From Baseline CycleParesthesia/dyesthesia pain LOCF endpt (n=29,27)0.52 score on scaleStandard Error 0.25
PlaceboChange in Pain Scores Rated on Neuropathic Pain Symptom Inventory (NPSI) Subscales From Baseline CycleTotal Score Cycle 2 (n=27,27)0.00 score on scaleStandard Error 0
PlaceboChange in Pain Scores Rated on Neuropathic Pain Symptom Inventory (NPSI) Subscales From Baseline CycleTotal Score Cycle 3 (n=27,24)0.00 score on scaleStandard Error 0
PlaceboChange in Pain Scores Rated on Neuropathic Pain Symptom Inventory (NPSI) Subscales From Baseline CycleTotal Score Cycle 4(n=27,23)0.01 score on scaleStandard Error 0
PlaceboChange in Pain Scores Rated on Neuropathic Pain Symptom Inventory (NPSI) Subscales From Baseline CycleTotal Score Cycle 5 (n=25,24)0.01 score on scaleStandard Error 0
PlaceboChange in Pain Scores Rated on Neuropathic Pain Symptom Inventory (NPSI) Subscales From Baseline CycleTotal Score Cycle 6(n=22,23)0.02 score on scaleStandard Error 0.01
PlaceboChange in Pain Scores Rated on Neuropathic Pain Symptom Inventory (NPSI) Subscales From Baseline CycleTotal Score Cycle 7 (n=18,23)0.02 score on scaleStandard Error 0.01
PlaceboChange in Pain Scores Rated on Neuropathic Pain Symptom Inventory (NPSI) Subscales From Baseline CycleTotal Score Cycle 8(n=18,20)0.02 score on scaleStandard Error 0.01
PlaceboChange in Pain Scores Rated on Neuropathic Pain Symptom Inventory (NPSI) Subscales From Baseline CycleTotal Score Cycle 9 (n=17,20)0.03 score on scaleStandard Error 0.01
PlaceboChange in Pain Scores Rated on Neuropathic Pain Symptom Inventory (NPSI) Subscales From Baseline CycleBurning spontaneous pain Cycle 4 (n=28,23)0.15 score on scaleStandard Error 0.1
Comparison: Burning Spontaneous Pain Cycle 3p-value: 0.203495% CI: [-0.06, 0.29]ANCOVA
Comparison: Burning Spontaneous Pain Cycle 4p-value: 0.306295% CI: [-0.4, 0.13]ANCOVA
Comparison: Burning Spontaneous Pain Cycle 5p-value: 0.278795% CI: [-0.37, 0.11]ANCOVA
Comparison: Burning Spontaneous Pain Cycle 6p-value: 0.412495% CI: [-0.2, 0.47]ANCOVA
Comparison: Burning Spontaneous Pain Cycle 7p-value: 0.954195% CI: [-0.68, 0.73]ANCOVA
Comparison: Burning Spontaneous Pain Cycle 8p-value: 0.338395% CI: [-0.33, 0.92]ANOVA
Comparison: Burning Spontaneous Painp-value: 0.891895% CI: [-0.84, 0.74]ANCOVA
Comparison: Burning Spontaneous Pain LOCF endpointp-value: 0.961495% CI: [-0.54, 0.51]ANCOVA
Comparison: Pressing Spontaneous Pain Cycle 2p-value: 0.302295% CI: [-0.17, 0.05]ANCOVA
Comparison: Pressing Spontaneous Pain Cycle 3p-value: 0.374795% CI: [-0.04, 0.12]ANCOVA
Comparison: Pressing Spontaneous Pain Cycle 4p-value: 0.16395% CI: [-0.4, 0.07]ANCOVA
Comparison: Pressing Spontaneous Pain Cycle 5p-value: 0.956895% CI: [-0.12, 0.11]ANOVA
Comparison: Pressing Spontaneous Pain Cycle 6p-value: 0.979395% CI: [-0.13, 0.13]ANCOVA
Comparison: Pressing Spontaneous Pain Cycle 7p-value: 0.88595% CI: [-0.54, 0.47]ANCOVA
Comparison: Pressing Spontaneous Pain Cycle 8p-value: 0.219995% CI: [-0.17, 0.7]ANCOVA
Comparison: Pressing Spontaneous Pain Cycle 9p-value: 0.401795% CI: [-0.14, 0.35]ANCOVA
Comparison: Pressing Spontaneous Pain LOCF Endpointp-value: 0.411395% CI: [-0.1, 0.24]ANCOVA
Comparison: Paroxysmal Pain Cycle 3p-value: 0.301195% CI: [-0.06, 0.02]ANCOVA
Comparison: Paroxysmal Pain Cycle 4p-value: 0.448295% CI: [-0.26, 0.12]ANCOVA
Comparison: Paroxysmal Pain Cycle 5p-value: 0.305895% CI: [-0.31, 0.1]ANCOVA
Comparison: Paroxysmal Pain Cycle 6p-value: 0.303595% CI: [-0.38, 0.12]ANCOVA
Comparison: Paroxysmal Pain Cycle 7p-value: 0.963695% CI: [-0.46, 0.48]ANCOVA
Comparison: Paroxysmal Pain Cycle 8p-value: 0.36695% CI: [-0.38, 1.02]ANCOVA
Comparison: Paroxysmal Pain Cycle 9p-value: 0.409395% CI: [-0.69, 0.29]ANCOVA
Comparison: Paroxysmal Pain LOCF Endpointp-value: 0.520895% CI: [-0.39, 0.2]ANCOVA
Comparison: Evoke Pain Cycle 2p-value: 0.993195% CI: [-0.17, 0.17]ANCOVA
Comparison: Evoke Pain Cycle 3p-value: 0.586795% CI: [-0.25, 0.44]ANCOVA
Comparison: Evoke Pain Cycle 4p-value: 0.274895% CI: [-0.37, 0.11]ANCOVA
Comparison: Evoke Pain Cycle 5p-value: 0.552195% CI: [-0.51, 0.28]ANCOVA
Comparison: Evoke Pain Cycle 6p-value: 0.673495% CI: [-0.96, 0.62]ANCOVA
Comparison: Evoke Pain Cycle 7p-value: 0.121495% CI: [-0.16, 1.33]ANCOVA
Comparison: Evoke Pain Cycle 8p-value: 0.184595% CI: [-0.34, 1.72]ANCOVA
Comparison: Evoke Pain Cycle 9p-value: 0.686395% CI: [-0.6, 0.9]ANCOVA
Comparison: Evoke Pain LOCF Endpointp-value: 0.927395% CI: [-0.51, 0.56]ANCOVA
Comparison: Parethesia/Dysesthesia Pain Cycle 2p-value: 0.041695% CI: [0.01, 0.5]ANCOVA
Comparison: Parethesia/Dysesthesia Pain Cycle 3p-value: 0.181995% CI: [-0.1, 0.5]ANCOVA
Comparison: Parethesia/Dysesthesia Pain Cycle 4p-value: 0.033195% CI: [0.03, 0.7]ANCOVA
Comparison: Parethesia/Dysesthesia Pain Cycle 5p-value: 0.060895% CI: [-0.02, 0.83]ANCOVA
Comparison: Parethesia/Dysesthesia Pain Cycle 6p-value: 0.280995% CI: [-0.31, 1.03]ANCOVA
Comparison: Parethesia/Dysesthesia Pain Cycle 7p-value: 0.344595% CI: [-0.34, 0.95]ANCOVA
Comparison: Parethesia/Dysesthesia Pain Cycle 8p-value: 0.280695% CI: [-0.44, 1.46]ANCOVA
Comparison: Parethesia/Dysesthesia Pain Cycle 9p-value: 0.521795% CI: [-0.68, 1.33]ANCOVA
Comparison: Parethesia/Dysesthesia Pain LOCF Endpointp-value: 0.362895% CI: [-0.37, 1]ANCOVA
Comparison: Total Score Cycle 2p-value: 0.355795% CI: [0, 0.01]ANCOVA
Comparison: Total Score Cycle 3p-value: 0.282495% CI: [0, 0.01]ANCOVA
Comparison: Total Score Cycle 4p-value: 0.593195% CI: [-0.01, 0.01]ANCOVA
Comparison: Total Score Cycle 5p-value: 0.986595% CI: [-0.01, 0.01]ANCOVA
Comparison: Total Score Cycle 6p-value: 0.985495% CI: [-0.02, 0.02]ANCOVA
Comparison: Total Score Cycle 7p-value: 0.340395% CI: [-0.01, 0.04]ANCOVA
Comparison: Total Score Cycle 8p-value: 0.222695% CI: [-0.01, 0.05]ANCOVA
Comparison: Total Score Cycle 9p-value: 0.969495% CI: [-0.03, 0.03]ANCOVA
Comparison: Total Score LOCF Endpointp-value: 0.895795% CI: [-0.02, 0.02]ANCOVA
Secondary

Duration Adjusted Average Change (DAAC) of Dysesthesia Symptom Score Within Each Cycle of Chemotherapy Measured by Numeric Rating Scale (NRS)

Least squares (LS) mean of change: mean at cycle minus mean at Baseline. Dysesthesic Duration Adjusted Average Change (DAAC) endpoint was computed based on Numeric Rating Scale (NRS) of dysesthesis (collected 0=no pain; 1-3=mild pain; 4-6=moderate pain; 7-10=severe pain). DAAC endpoint was defined as the Area Under Curve (AUC) of the collected NRS over time, divided by collection time period (up to 10 days).

Time frame: Baseline to Cycle 9, LOCF cycle endpoint

Population: ITT population, subjects with at lest 1 dose of study medication and for whom at least 1 post-baseline efficacy evaluation was obtained.

ArmMeasureGroupValue (LEAST_SQUARES_MEAN)Dispersion
PregabalinDuration Adjusted Average Change (DAAC) of Dysesthesia Symptom Score Within Each Cycle of Chemotherapy Measured by Numeric Rating Scale (NRS)LOCF endpoint (n=26, 27)1.36 score on scaleStandard Error 0.38
PregabalinDuration Adjusted Average Change (DAAC) of Dysesthesia Symptom Score Within Each Cycle of Chemotherapy Measured by Numeric Rating Scale (NRS)Cycle 5 (n=24,22)1.54 score on scaleStandard Error 0.48
PregabalinDuration Adjusted Average Change (DAAC) of Dysesthesia Symptom Score Within Each Cycle of Chemotherapy Measured by Numeric Rating Scale (NRS)Cycle 2 (n=26,26)0.75 score on scaleStandard Error 0.25
PregabalinDuration Adjusted Average Change (DAAC) of Dysesthesia Symptom Score Within Each Cycle of Chemotherapy Measured by Numeric Rating Scale (NRS)Cycle 3 (n=24,23)0.91 score on scaleStandard Error 0.33
PregabalinDuration Adjusted Average Change (DAAC) of Dysesthesia Symptom Score Within Each Cycle of Chemotherapy Measured by Numeric Rating Scale (NRS)Cycle 4 (n=25,23)1.01 score on scaleStandard Error 0.37
PregabalinDuration Adjusted Average Change (DAAC) of Dysesthesia Symptom Score Within Each Cycle of Chemotherapy Measured by Numeric Rating Scale (NRS)Cycle 6 (n=21,21)0.88 score on scaleStandard Error 0.38
PregabalinDuration Adjusted Average Change (DAAC) of Dysesthesia Symptom Score Within Each Cycle of Chemotherapy Measured by Numeric Rating Scale (NRS)Cycle 7 (n=17,22)1.17 score on scaleStandard Error 0.39
PregabalinDuration Adjusted Average Change (DAAC) of Dysesthesia Symptom Score Within Each Cycle of Chemotherapy Measured by Numeric Rating Scale (NRS)Cycle 8 (n=16,19)1.33 score on scaleStandard Error 0.4
PregabalinDuration Adjusted Average Change (DAAC) of Dysesthesia Symptom Score Within Each Cycle of Chemotherapy Measured by Numeric Rating Scale (NRS)Cycle 9 (n=16, 18)1.24 score on scaleStandard Error 0.44
PregabalinDuration Adjusted Average Change (DAAC) of Dysesthesia Symptom Score Within Each Cycle of Chemotherapy Measured by Numeric Rating Scale (NRS)Cycle 1 (n=25,27)0.09 score on scaleStandard Error 0.08
PlaceboDuration Adjusted Average Change (DAAC) of Dysesthesia Symptom Score Within Each Cycle of Chemotherapy Measured by Numeric Rating Scale (NRS)Cycle 7 (n=17,22)1.17 score on scaleStandard Error 0.34
PlaceboDuration Adjusted Average Change (DAAC) of Dysesthesia Symptom Score Within Each Cycle of Chemotherapy Measured by Numeric Rating Scale (NRS)Cycle 4 (n=25,23)0.71 score on scaleStandard Error 0.39
PlaceboDuration Adjusted Average Change (DAAC) of Dysesthesia Symptom Score Within Each Cycle of Chemotherapy Measured by Numeric Rating Scale (NRS)Cycle 5 (n=24,22)0.80 score on scaleStandard Error 0.5
PlaceboDuration Adjusted Average Change (DAAC) of Dysesthesia Symptom Score Within Each Cycle of Chemotherapy Measured by Numeric Rating Scale (NRS)Cycle 6 (n=21,21)0.93 score on scaleStandard Error 0.38
PlaceboDuration Adjusted Average Change (DAAC) of Dysesthesia Symptom Score Within Each Cycle of Chemotherapy Measured by Numeric Rating Scale (NRS)LOCF endpoint (n=26, 27)1.33 score on scaleStandard Error 0.38
PlaceboDuration Adjusted Average Change (DAAC) of Dysesthesia Symptom Score Within Each Cycle of Chemotherapy Measured by Numeric Rating Scale (NRS)Cycle 1 (n=25,27)0.13 score on scaleStandard Error 0.07
PlaceboDuration Adjusted Average Change (DAAC) of Dysesthesia Symptom Score Within Each Cycle of Chemotherapy Measured by Numeric Rating Scale (NRS)Cycle 9 (n=16, 18)1.75 score on scaleStandard Error 0.42
PlaceboDuration Adjusted Average Change (DAAC) of Dysesthesia Symptom Score Within Each Cycle of Chemotherapy Measured by Numeric Rating Scale (NRS)Cycle 2 (n=26,26)0.38 score on scaleStandard Error 0.25
PlaceboDuration Adjusted Average Change (DAAC) of Dysesthesia Symptom Score Within Each Cycle of Chemotherapy Measured by Numeric Rating Scale (NRS)Cycle 8 (n=16,19)1.06 score on scaleStandard Error 0.36
PlaceboDuration Adjusted Average Change (DAAC) of Dysesthesia Symptom Score Within Each Cycle of Chemotherapy Measured by Numeric Rating Scale (NRS)Cycle 3 (n=24,23)0.65 score on scaleStandard Error 0.34
Comparison: Cycle 1.p-value: 0.720795% CI: [-0.25, 0.17]ANCOVA
Comparison: Cycle 2.p-value: 0.311195% CI: [-0.36, 1.1]ANCOVA
Comparison: Cycle 3.p-value: 0.592595% CI: [-0.7, 1.22]ANCOVA
Comparison: Cycle 4.p-value: 0.581295% CI: [-0.8, 1.41]ANCOVA
Comparison: Cycle 5.p-value: 0.292595% CI: [-0.67, 2.16]ANCOVA
Comparison: Cycle 6.p-value: 0.927695% CI: [-1.15, 1.05]ANCOVA
Comparison: Cycle 7.p-value: 0.995295% CI: [-1.06, 1.07]ANCOVA
Comparison: Cycle 8.p-value: 0.626595% CI: [-0.85, 1.38]ANCOVA
Comparison: Cycle 9.p-value: 0.420995% CI: [-1.77, 0.76]ANCOVA
Comparison: Last Observation Carried Forward (LOCF)endpoint.p-value: 0.965795% CI: [-1.06, 1.11]ANCOVA
Secondary

Duration Adjusted Average Change (DAAC) of Pain Symptom Score Within Each Cycle of Chemotherapy Measured by Numeric Rating Scale (NRS)

Least squares (LS) mean of change: mean at cycle minus mean at Baseline. Pain Duration Adjusted Average Change (DAAC) endpoint was computed based on Numeric Rating Scale (NRS) of pain (collected 0=no pain; 1-3=mild pain; 4-6=moderate pain; 7-10=severe pain). DAAC endpoint was defined as the Area Under Curve (AUC) of the collected NRS over time, divided by collection time period (up to 10 days).

Time frame: Baseline to Cycle 9, LOCF cycle endpoint

Population: ITT population: subjects with at least 1 dose of study medication and for whom at least 1 post-baseline efficacy evaluation was obtained.

ArmMeasureGroupValue (LEAST_SQUARES_MEAN)Dispersion
PregabalinDuration Adjusted Average Change (DAAC) of Pain Symptom Score Within Each Cycle of Chemotherapy Measured by Numeric Rating Scale (NRS)LOCF endpoint (n=26, 27)0.65 score on scaleStandard Error 0.27
PregabalinDuration Adjusted Average Change (DAAC) of Pain Symptom Score Within Each Cycle of Chemotherapy Measured by Numeric Rating Scale (NRS)Cycle 6 (n=21,21)0.54 score on scaleStandard Error 0.27
PregabalinDuration Adjusted Average Change (DAAC) of Pain Symptom Score Within Each Cycle of Chemotherapy Measured by Numeric Rating Scale (NRS)Cycle 3 (n=23,23)0.47 score on scaleStandard Error 0.24
PregabalinDuration Adjusted Average Change (DAAC) of Pain Symptom Score Within Each Cycle of Chemotherapy Measured by Numeric Rating Scale (NRS)Cycle 7 (17,22)0.92 score on scaleStandard Error 0.31
PregabalinDuration Adjusted Average Change (DAAC) of Pain Symptom Score Within Each Cycle of Chemotherapy Measured by Numeric Rating Scale (NRS)Cycle 4 (n=25,23)0.62 score on scaleStandard Error 0.28
PregabalinDuration Adjusted Average Change (DAAC) of Pain Symptom Score Within Each Cycle of Chemotherapy Measured by Numeric Rating Scale (NRS)Cycle 8 (n=16,19)0.92 score on scaleStandard Error 0.36
PregabalinDuration Adjusted Average Change (DAAC) of Pain Symptom Score Within Each Cycle of Chemotherapy Measured by Numeric Rating Scale (NRS)Cycle 2 (n=25,26)0.29 score on scaleStandard Error 0.15
PregabalinDuration Adjusted Average Change (DAAC) of Pain Symptom Score Within Each Cycle of Chemotherapy Measured by Numeric Rating Scale (NRS)Cycle 9 (n=16, 18)0.86 score on scaleStandard Error 0.41
PregabalinDuration Adjusted Average Change (DAAC) of Pain Symptom Score Within Each Cycle of Chemotherapy Measured by Numeric Rating Scale (NRS)Cycle 5 (n=24,22)0.85 score on scaleStandard Error 0.33
PregabalinDuration Adjusted Average Change (DAAC) of Pain Symptom Score Within Each Cycle of Chemotherapy Measured by Numeric Rating Scale (NRS)Cycle 1 (n=25,27)0.02 score on scaleStandard Error 0.06
PlaceboDuration Adjusted Average Change (DAAC) of Pain Symptom Score Within Each Cycle of Chemotherapy Measured by Numeric Rating Scale (NRS)LOCF endpoint (n=26, 27)0.78 score on scaleStandard Error 0.27
PlaceboDuration Adjusted Average Change (DAAC) of Pain Symptom Score Within Each Cycle of Chemotherapy Measured by Numeric Rating Scale (NRS)Cycle 1 (n=25,27)0.07 score on scaleStandard Error 0.06
PlaceboDuration Adjusted Average Change (DAAC) of Pain Symptom Score Within Each Cycle of Chemotherapy Measured by Numeric Rating Scale (NRS)Cycle 2 (n=25,26)0.16 score on scaleStandard Error 0.15
PlaceboDuration Adjusted Average Change (DAAC) of Pain Symptom Score Within Each Cycle of Chemotherapy Measured by Numeric Rating Scale (NRS)Cycle 3 (n=23,23)0.26 score on scaleStandard Error 0.24
PlaceboDuration Adjusted Average Change (DAAC) of Pain Symptom Score Within Each Cycle of Chemotherapy Measured by Numeric Rating Scale (NRS)Cycle 4 (n=25,23)0.27 score on scaleStandard Error 0.29
PlaceboDuration Adjusted Average Change (DAAC) of Pain Symptom Score Within Each Cycle of Chemotherapy Measured by Numeric Rating Scale (NRS)Cycle 5 (n=24,22)0.31 score on scaleStandard Error 0.35
PlaceboDuration Adjusted Average Change (DAAC) of Pain Symptom Score Within Each Cycle of Chemotherapy Measured by Numeric Rating Scale (NRS)Cycle 6 (n=21,21)0.58 score on scaleStandard Error 0.27
PlaceboDuration Adjusted Average Change (DAAC) of Pain Symptom Score Within Each Cycle of Chemotherapy Measured by Numeric Rating Scale (NRS)Cycle 7 (17,22)0.60 score on scaleStandard Error 0.27
PlaceboDuration Adjusted Average Change (DAAC) of Pain Symptom Score Within Each Cycle of Chemotherapy Measured by Numeric Rating Scale (NRS)Cycle 8 (n=16,19)0.60 score on scaleStandard Error 0.33
PlaceboDuration Adjusted Average Change (DAAC) of Pain Symptom Score Within Each Cycle of Chemotherapy Measured by Numeric Rating Scale (NRS)Cycle 9 (n=16, 18)0.97 score on scaleStandard Error 0.39
Comparison: Cycle 1.p-value: 0.539295% CI: [-0.24, 0.12]ANCOVA
Comparison: Cycle 2.p-value: 0.541295% CI: [-0.3, 0.57]ANCOVA
Comparison: Cycle 3.p-value: 0.535895% CI: [-0.48, 0.9]ANCOVA
Comparison: Cycle 4.p-value: 0.405995% CI: [-0.48, 1.17]ANCOVA
Comparison: Cycle 5.p-value: 0.271295% CI: [-0.44, 1.52]ANCOVA
Comparison: Cycle 6.p-value: 0.918195% CI: [-0.81, 0.73]ANCOVA
Comparison: Cycle 7.p-value: 0.435795% CI: [-0.52, 1.17]ANCOVA
p-value: 0.510395% CI: [-0.67, 1.33]ANCOVA
Comparison: Cycle 9.p-value: 0.849995% CI: [-1.29, 1.07]ANCOVA
Comparison: LOCF endpoint.p-value: 0.735995% CI: [-0.9, 0.64]ANCOVA
Secondary

Duration Adjusted Average Change (DAAC) of Paresthesic Symptom Score Within Each Cycle of Chemotherapy Measured by Numeric Rating Scale (NRS)

Least squares mean of change: mean at cycle minus mean at Baseline. Paresthetic Duration Adjusted Average Change (DAAC) endpoint was computed based on Numeric Rating Scale (NRS) of paresthesia (collected 0=no pain; 1-3=mild pain; 4-6=moderate pain; 7-10=severe pain). DAAC endpoint is defined as the Area Under Curve (AUC) of the collected NRS over time, divided by collection time period (up to 10 days).

Time frame: Baseline to Cycle 9

Population: Intent-to-Treat (ITT) population: subjects with at least 1 dose of study medication and for whom at least 1 post-baseline efficacy evaluation was obtained.

ArmMeasureGroupValue (LEAST_SQUARES_MEAN)Dispersion
PregabalinDuration Adjusted Average Change (DAAC) of Paresthesic Symptom Score Within Each Cycle of Chemotherapy Measured by Numeric Rating Scale (NRS)Cycle 8 (n=16, 19)0.83 score on scaleStandard Error 0.29
PregabalinDuration Adjusted Average Change (DAAC) of Paresthesic Symptom Score Within Each Cycle of Chemotherapy Measured by Numeric Rating Scale (NRS)Cycle 4 (n=25, 23)0.64 score on scaleStandard Error 0.21
PregabalinDuration Adjusted Average Change (DAAC) of Paresthesic Symptom Score Within Each Cycle of Chemotherapy Measured by Numeric Rating Scale (NRS)Cycle 5 (n=24, 22)1.03 score on scaleStandard Error 0.33
PregabalinDuration Adjusted Average Change (DAAC) of Paresthesic Symptom Score Within Each Cycle of Chemotherapy Measured by Numeric Rating Scale (NRS)Cycle 7 (n=17, 22)0.93 score on scaleStandard Error 0.3
PregabalinDuration Adjusted Average Change (DAAC) of Paresthesic Symptom Score Within Each Cycle of Chemotherapy Measured by Numeric Rating Scale (NRS)Cycle 9 (n=16, 18)0.92 score on scaleStandard Error 0.36
PregabalinDuration Adjusted Average Change (DAAC) of Paresthesic Symptom Score Within Each Cycle of Chemotherapy Measured by Numeric Rating Scale (NRS)Cycle 1 (n=25, 27)0.03 score on scaleStandard Error 0.06
PregabalinDuration Adjusted Average Change (DAAC) of Paresthesic Symptom Score Within Each Cycle of Chemotherapy Measured by Numeric Rating Scale (NRS)Cycle 2 (n=26, 26)0.35 score on scaleStandard Error 0.16
PregabalinDuration Adjusted Average Change (DAAC) of Paresthesic Symptom Score Within Each Cycle of Chemotherapy Measured by Numeric Rating Scale (NRS)Cycle 6 (n=21, 21)0.74 score on scaleStandard Error 0.28
PregabalinDuration Adjusted Average Change (DAAC) of Paresthesic Symptom Score Within Each Cycle of Chemotherapy Measured by Numeric Rating Scale (NRS)Cycle 3 (n=24, 23)0.53 score on scaleStandard Error 0.21
PlaceboDuration Adjusted Average Change (DAAC) of Paresthesic Symptom Score Within Each Cycle of Chemotherapy Measured by Numeric Rating Scale (NRS)Cycle 6 (n=21, 21)0.64 score on scaleStandard Error 0.28
PlaceboDuration Adjusted Average Change (DAAC) of Paresthesic Symptom Score Within Each Cycle of Chemotherapy Measured by Numeric Rating Scale (NRS)Cycle 3 (n=24, 23)0.37 score on scaleStandard Error 0.21
PlaceboDuration Adjusted Average Change (DAAC) of Paresthesic Symptom Score Within Each Cycle of Chemotherapy Measured by Numeric Rating Scale (NRS)Cycle 9 (n=16, 18)1.65 score on scaleStandard Error 0.34
PlaceboDuration Adjusted Average Change (DAAC) of Paresthesic Symptom Score Within Each Cycle of Chemotherapy Measured by Numeric Rating Scale (NRS)Cycle 4 (n=25, 23)0.40 score on scaleStandard Error 0.22
PlaceboDuration Adjusted Average Change (DAAC) of Paresthesic Symptom Score Within Each Cycle of Chemotherapy Measured by Numeric Rating Scale (NRS)Cycle 2 (n=26, 26)0.22 score on scaleStandard Error 0.16
PlaceboDuration Adjusted Average Change (DAAC) of Paresthesic Symptom Score Within Each Cycle of Chemotherapy Measured by Numeric Rating Scale (NRS)Cycle 5 (n=24, 22)0.53 score on scaleStandard Error 0.35
PlaceboDuration Adjusted Average Change (DAAC) of Paresthesic Symptom Score Within Each Cycle of Chemotherapy Measured by Numeric Rating Scale (NRS)Cycle 1 (n=25, 27)0.13 score on scaleStandard Error 0.05
PlaceboDuration Adjusted Average Change (DAAC) of Paresthesic Symptom Score Within Each Cycle of Chemotherapy Measured by Numeric Rating Scale (NRS)Cycle 7 (n=17, 22)0.96 score on scaleStandard Error 0.26
PlaceboDuration Adjusted Average Change (DAAC) of Paresthesic Symptom Score Within Each Cycle of Chemotherapy Measured by Numeric Rating Scale (NRS)Cycle 8 (n=16, 19)1.03 score on scaleStandard Error 0.27
Comparison: Cycle 1. Sample size was based on original primary efficacy parameter (PEP) of time to persistent paresthesia symptoms (symptoms developing in 35% of subjects taking pregabalin and 60% taking placebo symptoms). Assuming Type I error rate of 0.05 and a 2-sided log-rank test for equality of time to persistent symptoms survival curves, the study would have had at least 90% power using 100 subjects per treatment group. The original PEP was modified to secondary due to lack of symptom emergence.p-value: 0.2536ANCOVA
Comparison: Cycle 2. Sample size was based on original primary efficacy parameter (PEP) of time to persistent paresthesia symptoms (symptoms developing in 35% of subjects taking pregabalin and 60% taking placebo symptoms). Assuming Type I error rate of 0.05 and a 2-sided log-rank test for equality of time to persistent symptoms survival curves, the study would have had at least 90% power using 100 subjects per treatment group. The original PEP was modified to secondary due to lack of symptom emergence.p-value: 0.5757ANCOVA
Comparison: Cycle 3. Sample size was based on original primary efficacy parameter (PEP) of time to persistent paresthesia symptoms (symptoms developing in 35% of subjects taking pregabalin and 60% taking placebo symptoms). Assuming Type I error rate of 0.05 and a 2-sided log-rank test for equality of time to persistent symptoms survival curves, the study would have had at least 90% power using 100 subjects per treatment group. The original PEP was modified to secondary due to lack of symptom emergence.p-value: 0.6065ANCOVA
Comparison: Cycle 4. Sample size was based on original primary efficacy parameter (PEP) of time to persistent paresthesia symptoms (symptoms developing in 35% of subjects taking pregabalin and 60% taking placebo symptoms). Assuming Type I error rate of 0.05 and a 2-sided log-rank test for equality of time to persistent symptoms survival curves, the study would have had at least 90% power using 100 subjects per treatment group. The original PEP was modified to secondary due to lack of symptom emergence.p-value: 0.4301ANCOVA
Comparison: Cycle 5. Sample size was based on original primary efficacy parameter (PEP) of time to persistent paresthesia symptoms (symptoms developing in 35% of subjects taking pregabalin and 60% taking placebo symptoms). Assuming Type I error rate of 0.05 and a 2-sided log-rank test for equality of time to persistent symptoms survival curves, the study would have had at least 90% power using 100 subjects per treatment group. The original PEP was modified to secondary due to lack of symptom emergence.p-value: 0.3125ANCOVA
Comparison: Cycle 6.Sample size was based on original primary efficacy parameter (PEP) of time to persistent paresthesia symptoms (symptoms developing in 35% of subjects taking pregabalin and 60% taking placebo symptoms). Assuming Type I error rate of 0.05 and a 2-sided log-rank test for equality of time to persistent symptoms survival curves, the study would have had at least 90% power using 100 subjects per treatment group. The original PEP was modified to secondary due to lack of symptom emergence.p-value: 0.8169ANCOVA
Comparison: Cycle 7. Sample size was based on original primary efficacy parameter (PEP) of time to persistent paresthesia symptoms (symptoms developing in 35% of subjects taking pregabalin and 60% taking placebo symptoms). Assuming Type I error rate of 0.05 and a 2-sided log-rank test for equality of time to persistent symptoms survival curves, the study would have had at least 90% power using 100 subjects per treatment group. The original PEP was modified to secondary due to lack of symptom emergence.p-value: 0.9359ANCOVA
Comparison: Cycle 8. Sample size was based on original primary efficacy parameter (PEP) of time to persistent paresthesia symptoms (symptoms developing in 35% of subjects taking pregabalin and 60% taking placebo symptoms). Assuming Type I error rate of 0.05 and a 2-sided log-rank test for equality of time to persistent symptoms survival curves, the study would have had at least 90% power using 100 subjects per treatment group. The original PEP was modified to secondary due to lack of symptom emergence.p-value: 0.6233ANCOVA
Comparison: Cycle 9.Sample size was based on original primary efficacy parameter (PEP) of time to persistent paresthesia symptoms (symptoms developing in 35% of subjects taking pregabalin and 60% taking placebo symptoms). Assuming Type I error rate of 0.05 and a 2-sided log-rank test for equality of time to persistent symptoms survival curves, the study would have had at least 90% power using 100 subjects per treatment group. The original PEP was modified to secondary due to lack of symptom emergence.p-value: 0.1569ANCOVA
Secondary

Number of Participants With Persistent Paresthesic, Dysesthesic, and Pain Symptoms

Number of participants with persistent paresthesic, dyesthesic, and pain symptoms at chemotherapy Cycle 9 and last observation carried forward (LOCF) endpoint. Numeric rating scale of symptoms: \>=1: mild symptoms to \>=4: moderate severe symptoms. Subjects rated their average severity of symptoms over the last 24 hours every evening before bedtime.

Time frame: Cycle 9 and Last Observation Carried Forward (LOCF) cycle endpoint

Population: ITT population, subjects with at least 1 dose of study medication and for whom at least 1 post-baseline efficacy evaluation was obtained.

ArmMeasureGroupValue (NUMBER)
PregabalinNumber of Participants With Persistent Paresthesic, Dysesthesic, and Pain SymptomsDysesthesia LOCF endpoint (n=30,29 (>or=4)2 participants
PregabalinNumber of Participants With Persistent Paresthesic, Dysesthesic, and Pain SymptomsDysesthesia Cycle 9 (n=19,19) (>or=1)10 participants
PregabalinNumber of Participants With Persistent Paresthesic, Dysesthesic, and Pain SymptomsDysesthesia LOCF endpoint (n=30,29) (>or=1)11 participants
PregabalinNumber of Participants With Persistent Paresthesic, Dysesthesic, and Pain SymptomsDysesthesia Cycle 9 (n=19,19) (>or=2)5 participants
PregabalinNumber of Participants With Persistent Paresthesic, Dysesthesic, and Pain SymptomsDysesthesia LOCF endpoint (n=30,29) (>or=2)6 participants
PregabalinNumber of Participants With Persistent Paresthesic, Dysesthesic, and Pain SymptomsDysesthesia LOCF endpoint (n=30,29) (>or=3)4 participants
PregabalinNumber of Participants With Persistent Paresthesic, Dysesthesic, and Pain SymptomsPain Cycle 9 (n=19,19) (>or=1)6 participants
PregabalinNumber of Participants With Persistent Paresthesic, Dysesthesic, and Pain SymptomsPain LOCF endpoint (n=30,29;) (>or=1)6 participants
PregabalinNumber of Participants With Persistent Paresthesic, Dysesthesic, and Pain SymptomsParesthesia Cycle 9 (n=19,19) (>or=1)7 participants
PregabalinNumber of Participants With Persistent Paresthesic, Dysesthesic, and Pain SymptomsParesthesia LOCF endpoint (n=30,29) (>or=1)8 participants
PregabalinNumber of Participants With Persistent Paresthesic, Dysesthesic, and Pain SymptomsParesthesia Cycle 9 (n=19,19) (>or=2)4 participants
PregabalinNumber of Participants With Persistent Paresthesic, Dysesthesic, and Pain SymptomsParesthesia LOCF endpoint (n=30,29) (>or=2)5 participants
PregabalinNumber of Participants With Persistent Paresthesic, Dysesthesic, and Pain SymptomsParesthesia Cycle 9 (n=19,19) (>or=3)2 participants
PregabalinNumber of Participants With Persistent Paresthesic, Dysesthesic, and Pain SymptomsParesthesia LOCF endpoint (n=30,29) (>or=3)3 participants
PregabalinNumber of Participants With Persistent Paresthesic, Dysesthesic, and Pain SymptomsParesthesia Cycle 9 (n=19,19) (>or=4)1 participants
PregabalinNumber of Participants With Persistent Paresthesic, Dysesthesic, and Pain SymptomsDysesthesia Cycle 9 (n=19,19) (>or=3)3 participants
PregabalinNumber of Participants With Persistent Paresthesic, Dysesthesic, and Pain SymptomsDysesthesia Cycle 9 (n=19,19) (>or=4)1 participants
PregabalinNumber of Participants With Persistent Paresthesic, Dysesthesic, and Pain SymptomsParesthesia LOCF endpoint (n=30,29) (>or=4)2 participants
PregabalinNumber of Participants With Persistent Paresthesic, Dysesthesic, and Pain SymptomsPain Cycle 9 (n=19,19) (>or=2)2 participants
PregabalinNumber of Participants With Persistent Paresthesic, Dysesthesic, and Pain SymptomsPain LOCF endpoint (n=30,29) (>or=2)2 participants
PregabalinNumber of Participants With Persistent Paresthesic, Dysesthesic, and Pain SymptomsPain Cycle 9 (n=19,19) (>or=3)1 participants
PregabalinNumber of Participants With Persistent Paresthesic, Dysesthesic, and Pain SymptomsPain LOCF endpoint (n=30,29) (>or=3)1 participants
PregabalinNumber of Participants With Persistent Paresthesic, Dysesthesic, and Pain SymptomsPain Cycle 9 (n=19,19) (>or=4)0 participants
PregabalinNumber of Participants With Persistent Paresthesic, Dysesthesic, and Pain SymptomsPain LOCF endpoint (n=30,29) (>or=4)0 participants
PlaceboNumber of Participants With Persistent Paresthesic, Dysesthesic, and Pain SymptomsPain Cycle 9 (n=19,19) (>or=1)2 participants
PlaceboNumber of Participants With Persistent Paresthesic, Dysesthesic, and Pain SymptomsParesthesia LOCF endpoint (n=30,29) (>or=4)1 participants
PlaceboNumber of Participants With Persistent Paresthesic, Dysesthesic, and Pain SymptomsParesthesia Cycle 9 (n=19,19) (>or=3)1 participants
PlaceboNumber of Participants With Persistent Paresthesic, Dysesthesic, and Pain SymptomsDysesthesia Cycle 9 (n=19,19) (>or=1)4 participants
PlaceboNumber of Participants With Persistent Paresthesic, Dysesthesic, and Pain SymptomsPain Cycle 9 (n=19,19) (>or=4)1 participants
PlaceboNumber of Participants With Persistent Paresthesic, Dysesthesic, and Pain SymptomsDysesthesia LOCF endpoint (n=30,29) (>or=1)5 participants
PlaceboNumber of Participants With Persistent Paresthesic, Dysesthesic, and Pain SymptomsParesthesia LOCF endpoint (n=30,29) (>or=3)1 participants
PlaceboNumber of Participants With Persistent Paresthesic, Dysesthesic, and Pain SymptomsPain Cycle 9 (n=19,19) (>or=2)1 participants
PlaceboNumber of Participants With Persistent Paresthesic, Dysesthesic, and Pain SymptomsDysesthesia LOCF endpoint (n=30,29) (>or=2)4 participants
PlaceboNumber of Participants With Persistent Paresthesic, Dysesthesic, and Pain SymptomsParesthesia Cycle 9 (n=19,19) (>or=4)1 participants
PlaceboNumber of Participants With Persistent Paresthesic, Dysesthesic, and Pain SymptomsDysesthesia LOCF endpoint (n=30,29) (>or=3)2 participants
PlaceboNumber of Participants With Persistent Paresthesic, Dysesthesic, and Pain SymptomsDysesthesia LOCF endpoint (n=30,29 (>or=4)2 participants
PlaceboNumber of Participants With Persistent Paresthesic, Dysesthesic, and Pain SymptomsDysesthesia Cycle 9 (n=19,19) (>or=2)3 participants
PlaceboNumber of Participants With Persistent Paresthesic, Dysesthesic, and Pain SymptomsPain LOCF endpoint (n=30,29) (>or=3)2 participants
PlaceboNumber of Participants With Persistent Paresthesic, Dysesthesic, and Pain SymptomsPain LOCF endpoint (n=30,29;) (>or=1)3 participants
PlaceboNumber of Participants With Persistent Paresthesic, Dysesthesic, and Pain SymptomsPain Cycle 9 (n=19,19) (>or=3)1 participants
PlaceboNumber of Participants With Persistent Paresthesic, Dysesthesic, and Pain SymptomsDysesthesia Cycle 9 (n=19,19) (>or=3)1 participants
PlaceboNumber of Participants With Persistent Paresthesic, Dysesthesic, and Pain SymptomsParesthesia Cycle 9 (n=19,19) (>or=1)6 participants
PlaceboNumber of Participants With Persistent Paresthesic, Dysesthesic, and Pain SymptomsPain LOCF endpoint (n=30,29) (>or=2)2 participants
PlaceboNumber of Participants With Persistent Paresthesic, Dysesthesic, and Pain SymptomsParesthesia LOCF endpoint (n=30,29) (>or=1)7 participants
PlaceboNumber of Participants With Persistent Paresthesic, Dysesthesic, and Pain SymptomsDysesthesia Cycle 9 (n=19,19) (>or=4)1 participants
PlaceboNumber of Participants With Persistent Paresthesic, Dysesthesic, and Pain SymptomsParesthesia Cycle 9 (n=19,19) (>or=2)3 participants
PlaceboNumber of Participants With Persistent Paresthesic, Dysesthesic, and Pain SymptomsPain LOCF endpoint (n=30,29) (>or=4)2 participants
PlaceboNumber of Participants With Persistent Paresthesic, Dysesthesic, and Pain SymptomsParesthesia LOCF endpoint (n=30,29) (>or=2)3 participants

Source: ClinicalTrials.gov · Data processed: Feb 4, 2026