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NKTR-181

Phase 3

Low Back Pain | Small molecule | Musculoskeletal |Nektar Therapeutics|Last Updated: Jun 22, 2021

Success Probability
Approval Probability 71%
TA Base Rate26%
Adjusted LOA41%
ML RiskLOW_RISK
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Market & Valuation
rNPV $3.2B
Market Size $9.4B
Revenue Basis $1.6B
Competitors 6
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Trial Design
RandomizedDouble-BlindPLACEBO_CONTROLLED
Total Trials2
Total Enrollment1,827
FDA Designations
No designations recorded
Clinical Trials (2)
NCT IDTitlePhaseStatusEnrollmentVelocityDesignStartCompletionLast UpdatedSitesCountries
NCT02367820Long-Term Safety and Tolerability Study of NKTR-181 in Subjects With Chronic Low Back Pain or Chronic Non-Cancer PainPHASE3 COMPLETED 638Apr 14, 2015Jan 1, 2018Jun 22, 202156 United States
NCT02362672Efficacy and Safety Study of NKTR-181 in Opioid-Naive Subjects With Low Back PainPHASE3 COMPLETED 1,189Mar 11, 2015Feb 1, 2017Sep 16, 202054 United States
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Study Endpoints
Primary Endpoints
Number of Participants Reporting Adverse Events
Screening baseline through end of study, an average of 57 weeks

Count of subjects reporting treatment emergent adverse events

The Change in Weekly (ie, 7-day Average) Pain Score at the End of Double-blind, Randomized Treatment Period, Relative to the Weekly Score at the End of Titration (Double-blind Baseline)
12 Weeks of randomized double blinded period

The daily pain intensity is an 11-point numerical rating scale ranging from 0 (no pain) to 10 (worst possible pain).

Secondary Endpoints
Change From Baseline in Brief Pain Inventory (BPI) Pain Intensity Item to Week 52
Baseline, monthly change from baseline till the end of study
Change From Baseline in Brief Pain Inventory (BPI) Pain Interference Item to Week 52
Baseline, monthly change from baseline till the end of study
Responder Analysis Based on Percent Reduction in Pain Intensity
Screening Baseline through Week 12
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Study Design & Arms
AllocationNA
MaskingNONE
ModelSINGLE_GROUP
PurposeTREATMENT
Treatment Arms
ArmTypeDescription
NKTR-181EXPERIMENTALNKTR-181 twice daily (BID) tablets
PlaceboPLACEBO_COMPARATORPlacebo to match NKTR-181 twice daily (BID) tablets
Interventions
NameTypeDescription
NKTR-181 BID tabletsDRUGNKTR-181 tablets 100-600 mg twice daily (BID)
Placebo to match NKTR-181 BID tabletsDRUGPlacebo to match NKTR-181 tablets 100-400 mg twice daily (BID)
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Eligibility Criteria
Age Range18 Years — 75 Years
SexALL
Healthy VolunteersNo
Study Sites56

Inclusion Criteria: * Male or non-pregnant, non-nursing female aged 18 to 75 years old * Clinical diagnosis of moderate to severe, chronic low back or non-cancer pain for at least three months * Not experiencing adequate pain relief or have failed previous treatment with non-opioid analgesics * Opi...

Countries:United States
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