Independent directory Public ClinicalTrials.gov records United States
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ClinicalTrials.gov public records Last synced Sep 9, 2026, 11:20 PM EDT

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Showing 1–3 of 3 matching trials from the live ClinicalTrials.gov search.
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Conditions
Low Back Pain, Chronic Pain
Interventions
NKTR-181 BID tablets, Placebo to match NKTR-181 BID tablets
Drug
Lead sponsor
Nektar Therapeutics
Industry
Eligibility
18 Years to 75 Years
Enrollment
1,189 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2015 – 2017
U.S. locations
54
States / cities
Saraland, Alabama • Phoenix, Arizona • Tempe, Arizona + 48 more
Conditions
Osteoarthritis of the Knee
Interventions
NKTR-181, Placebo
Drug
Lead sponsor
Nektar Therapeutics
Industry
Eligibility
18 Years and older
Enrollment
296 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2012 – 2013
U.S. locations
34
States / cities
Mobile, Alabama • Tucson, Arizona • Garden Grove, California + 29 more
Conditions
Low Back Pain, Chronic Pain
Interventions
NKTR-181 BID tablets
Drug
Lead sponsor
Nektar Therapeutics
Industry
Eligibility
18 Years to 75 Years
Enrollment
638 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2015 – 2018
U.S. locations
56
States / cities
Saraland, Alabama • Phoenix, Arizona • Tempe, Arizona + 50 more