ClinicalTrials.gg
CompletedNCT03372161Updated Sep 19, 2022Results posted

Corticosteroid Lumbar Epidural Analgesia for Radiculopathy

A Phase 3 interventional study of SP-102 and Placebo in Lumbosacral Radicular Pain, sponsored by Scilex Pharmaceuticals, Inc.. Completed at 37 sites in United States. Open to participants aged 18 Years to 70 Years. Per ClinicalTrials.gov, last updated 2022-09-19.

Sponsored by Scilex Pharmaceuticals, Inc. · Phase 3, Interventional, and Treatment

Phase
Phase 3
Study type
Interventional
Enrollment
401
Allocation
Randomized
Ages
18 Years to 70 Years
Sex
All
01

Study summary

This is a research study of SP-102, an experimental medication designed to relieve pain in patients with a specific type of leg pain. The medication is given once by your healthcare professional, with a possibility of a second injection as early as about 1 month after the first treatment.

The purpose of the study is to measure how well a single injection of the experimental medication, SP-102, relieves pain. The study will also investigate the side effects of SP-102.

02

Conditions studied

  • Lumbosacral Radicular Pain

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Keywords

  • lumbosacral radicular pain
  • sciatica
  • leg pain
03

In context

Sciatica

149 studies on the registry are indexed under Sciatica; 31 are open to participants now.

This study's enrollment of 401 is above the median of 68 across 122 interventional studies indexed under Sciatica.

Browse Sciatica studies →

Lead sponsor

Scilex Pharmaceuticals, Inc. is the lead sponsor of 13 studies on the registry; none are open to participants now.

Of its 12 completed or terminated interventional studies of FDA-regulated products, 2 (17%) have results posted.

Counted across the registry records on this site, refreshed daily.

04

Who can participate

Ages eligible
18 Years to 70 Years
Sexes eligible
All
Accepts healthy volunteers
No

Eligibility criteria

Main Inclusion Criteria:

  • Able and willing to read, write, and understand the English language and provide English language written prior to beginning any study procedures.
  • Age 18 to 70 years (inclusive) at the Screening Visit.
  • A diagnosis of lumbosacral radicular pain (sciatica).
  • Agrees to follow study-specific medication requirements.
  • If sexually active and a female of or a male capable of bearing a child, agrees to use an effective method of during the study.
  • Has reviewed all study specific materials and has, in the opinion of the Investigator, the abilities to understand and appropriately complete all study procedures.

Main Exclusion Criteria:

  • Has radiologic evidence of a condition that would compromise study outcomes.
  • Has ever had lumbosacral back surgery or plans to undergo spine surgical intervention while in the study.
  • Has been diagnosed with insulin dependent diabetes mellitus.
  • Presence of any other disorder, condition or circumstance (including secondary gain) that, in the opinion of the Investigator, has the potential to prevent study completion and/or to have a confounding effect on outcome assessments.
  • Use of any drug and/or device within 30 days, or is scheduled to receive an investigational drug other than blinded study drug during this study.
  • Has a ≥40 kg/m2.
Terms in these criteria, in plain language(5)

Underlined terms in the criteria open these too. Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.

Informed consent

Before you join, the study team explains what taking part involves — its purpose, what happens, the risks and possible benefits — and answers your questions, so you can decide freely. Consent is usually recorded on a form (the informed consent form, ICF) signed by you or, where the law allows, by someone legally authorised to decide for you.

You can keep asking questions during the study, you are told of new information that matters, and you can choose to leave at any time.

Childbearing potential

Able to become pregnant: from the first period until menopause, unless permanently unable to through surgery (removal of the womb, or of both ovaries or both fallopian tubes).

Criteria for people of childbearing potential usually ask for a negative pregnancy test and for contraception during the study and for a time after it.

Contraception

Ways of preventing pregnancy. “Highly effective” methods fail less than 1% of the time a year when used correctly — for example an IUD or an implant.

Criteria usually say which methods count and how long to keep using them after the last dose, sometimes for male participants too. Some studies accept a partner’s vasectomy if it was confirmed successful and that person is the participant’s only sexual partner.

Investigational drug or device

A drug or device being studied in a clinical trial.

It may be new, or already approved and being studied for another use, dose or form. Criteria often leave out people who took part in another study of one within a recent period, commonly 30 days or five half-lives.

BMI (body mass index)

Weight in kilograms divided by height in metres squared. Example: 70 kg and 1.75 m gives 70 ÷ (1.75 × 1.75) ≈ 22.9.

What counts as overweight or obesity differs between countries (some use lower cut-offs), so go by the range the study states.

05

Study design

Phase
Phase 3
Primary purpose
Treatment
Allocation
Randomized
Intervention model
Parallel assignment
Masking
Triple (Participant, Investigator, Outcomes assessor)
Enrollment
401 participants (actual)

Study arms

  • Experimental
    SP-102

    SP-102

    Drug: SP-102

  • Placebo comparator
    Placebo

    Placebo

    Drug: Placebo

Interventions

  • DrugSP-102

    injection

  • DrugPlacebo

    injection

06

What researchers measure

Primary outcomes

  1. Mean Change From Baseline (Day 1) to Week 4 in the Mean Numeric Pain Rating Scale (NPRS) Average Pain Score in the Affected Leg

    The NPRS is an 11-point scale (0 to 10-point scale where 0 was no pain and 10 was worst pain imaginable) that allowed the subject to rate the severity of their pain intensity at various points in time.

    Time frame: Baseline, 4 Weeks

Secondary outcomes

  1. Mean Change From Baseline (Day 1) to Week 4 in the Oswestry Disability Index Score (ODI)

    The ODI is the gold standard for measuring degree of disability and estimating quality of life in a person with low back pain. The ODI is a questionnaire completed by the subject that assesses10 topics: intensity of pain, lifting, ability to care for oneself, ability to walk, ability to sit, sexual function, ability to stand, social life, sleep quality, and ability to travel. Each question was scored on a scale of 0-5 with 0 indicating the least amount of disability and 5 indicating the most severe disability. The scores for all questions answered were summed, then multiplied by 2 to obtain the index (range 0 to 100). Zero was equated with no disability and 100 was the maximum disability possible.

    Time frame: Baseline, 4 Weeks

07

Results

Posted Sep 19, 2022

Participant flow

Participant flow — Overall Study
MilestoneSP-102Placebo
Started202199
Completed193192
Not completed97

Outcome measures

PrimaryMean Change From Baseline (Day 1) to Week 4 in the Mean Numeric Pain Rating Scale (NPRS) Average Pain Score in the Affected Leg

The NPRS is an 11-point scale (0 to 10-point scale where 0 was no pain and 10 was worst pain imaginable) that allowed the subject to rate the severity of their pain intensity at various points in time.

Time frame:
Baseline, 4 Weeks
Reported as:
Mean · Change in score on a scale from baseline
Mean Change From Baseline (Day 1) to Week 4 in the Mean Numeric Pain Rating Scale (NPRS) Average Pain Score in the Affected Leg
Change in score on a scale from baselineSP-102Placebo
Mean Change From Baseline (Day 1) to Week 4 in the Mean Numeric Pain Rating Scale (NPRS) Average Pain Score in the Affected Leg-2.34 ± 1.842-1.16 ± 1.723
SecondaryMean Change From Baseline (Day 1) to Week 4 in the Oswestry Disability Index Score (ODI)

The ODI is the gold standard for measuring degree of disability and estimating quality of life in a person with low back pain. The ODI is a questionnaire completed by the subject that assesses10 topics: intensity of pain, lifting, ability to care for oneself, ability to walk, ability to sit, sexual function, ability to stand, social life, sleep quality, and ability to travel. Each question was scored on a scale of 0-5 with 0 indicating the least amount of disability and 5 indicating the most severe disability. The scores for all questions answered were summed, then multiplied by 2 to obtain the index (range 0 to 100). Zero was equated with no disability and 100 was the maximum disability possible.

Time frame:
Baseline, 4 Weeks
Reported as:
Mean · Change in score on a scale from baseline
Mean Change From Baseline (Day 1) to Week 4 in the Oswestry Disability Index Score (ODI)
Change in score on a scale from baselineSP-102Placebo
Mean Change From Baseline (Day 1) to Week 4 in the Oswestry Disability Index Score (ODI)-10.89 ± 14.906-4.76 ± 12.896

Adverse events

Collected over 4 weeks. Non-serious events are listed at a 0% frequency threshold.

Adverse event summary by group
GroupDeathsSeriousOther
SP-1020/202 (0%)0/202 (0%)60/202 (29.7%)
Placebo1/199 (0.5%)2/199 (1%)42/199 (21.1%)
Most frequent serious events
Most frequent serious events
EventSP-102Placebo
Cardiac arrestCardiac disorders0/2021/199
COVID-19 pneumoniaInfections and infestations0/2021/199
Most frequent other events
Showing 10 of 90
Most frequent other events
EventSP-102Placebo
HeadacheNervous system disorders13/20211/199
Upper respiratory tract infectionInfections and infestations2/2024/199
Injection site painGeneral disorders4/2020/199
SinusitisInfections and infestations4/2020/199
HypertensionVascular disorders4/2021/199
Urinary tract infectionInfections and infestations2/2023/199
NauseaGastrointestinal disorders3/2021/199
VomitingGastrointestinal disorders3/2020/199
ArthralgiaMusculoskeletal and connective tissue disorders3/2021/199
MigraineNervous system disorders3/2020/199

Baseline characteristics

Age, Continuous
Age, Continuous(years)SP-102PlaceboTotal
Mean51.2 ± 9.8351.7 ± 10.3651.4 ± 10.09
Sex: Female, Male
Sex: Female, Male(Participants)SP-102PlaceboTotal
Female116122238
Male8677163
Ethnicity (NIH/OMB)
Ethnicity (NIH/OMB)(Participants)SP-102PlaceboTotal
Hispanic or Latino343569
Not Hispanic or Latino168164332
Unknown or Not Reported000
Race (NIH/OMB)
Race (NIH/OMB)(Participants)SP-102PlaceboTotal
American Indian or Alaska Native000
Asian437
Native Hawaiian or Other Pacific Islander000
Black or African American373370
White160162322
More than one race112
Unknown or Not Reported000
08

Study locations

37 sites
  • Semnur Research Site 75
    Mobile, Alabama 36605, United States
  • Semnur Research Site 52
    Phoenix, Arizona 85053, United States
  • Semnur Research Site 58
    Tempe, Arizona 85284, United States
  • Semnur Research Site 18
    La Jolla, California 92037, United States
  • Semnur Research Site 47
    Laguna Woods, California 92637, United States
  • Semnur Research Site 70
    Los Gatos, California 95032, United States
  • Semnur Research Site 56
    Fernandina Beach, Florida 32024, United States
  • Semnur Research Site 81
    Jacksonville, Florida 32224, United States
  • Semnur Research Site 49
    Saint Petersburg, Florida 33709, United States
  • Semnur Research Site 13
    Tampa, Florida 33603, United States
  • Semnur Research Site 61
    Tampa, Florida 33603, United States
  • Semnur Research Site 53
    Winter Park, Florida 32789, United States
  • Semnur Research Site 28
    Marietta, Georgia 30060, United States
  • Semnur Research Site 64
    Marietta, Georgia 30060, United States
  • Semnur Research Site 10
    Newnan, Georgia 30265, United States
  • Semnur Research Site 38
    Boise, Idaho 83704, United States
  • Semnur Research Site 40
    Bloomington, Illinois 61704, United States
  • Semnur Research Site 63
    Chicago, Illinois 60607, United States
  • Semnur Research Site 12
    Chicago, Illinois 60612, United States
  • Semnur Research Site 19
    Chicago, Illinois 60657, United States
  • Semnur Reseach Site 62
    Overland Park, Kansas 66210, United States
  • Semnur Research Site 51
    Burlington, Massachusetts 01805, United States
  • Semnur Research Site 65
    Omaha, Nebraska 68118, United States
  • Semnur Research Site 60
    Las Vegas, Nevada 89129, United States
  • Semnur Research Site 30
    Shrewsbury, New Jersey 07702, United States
  • Semnur Research Site 11
    Durham, North Carolina 27710, United States
  • Semnur Research Site 20
    Winston-Salem, North Carolina 27103, United States
  • Semnur Research Site 46
    Cleveland, Ohio 44106, United States
  • Semnur Research Site 43
    Cuyahoga Falls, Ohio 44223, United States
  • Semnur Research Site 36
    Oklahoma City, Oklahoma 73109, United States
  • Semnur Research Site 48
    Charleston, South Carolina 29406, United States
  • Semnur Research Site 77
    Greenville, South Carolina 29615, United States
  • Semnur Research Site 15
    Houston, Texas 77004, United States
  • Semnur Research Site 54
    Plano, Texas 75093, United States
  • Semnur Research Site 35
    Tyler, Texas 75701, United States
  • Semnur Research Site 59
    Draper, Utah 84020, United States
  • Semnur Research Site 42
    Greenfield, Wisconsin 53220, United States
09

References and documents

Study documents

PDFs hosted by the registry, ClinicalTrials.gov.

10

Updates

Tracking since Sep 25, 2026
No changes since tracking began. The registry record was last updated on Sep 19, 2022, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
11

Registry details

Key details

Study ID
NCT03372161
Lead sponsor
Scilex Pharmaceuticals, Inc.
Collaborators
Worldwide Clinical Trials, Semnur Pharmaceuticals, Inc.
Responsible party
Sponsor
First posted
Dec 13, 2017
Start date
Dec 8, 2017
Primary completion
Aug 20, 2021
Completion
Jan 6, 2022
Results posted
Sep 19, 2022
Last update
Sep 19, 2022

Study contacts

Dmitri Lissin, MD
study director · Scilex Pharmaceuticals, Inc.

Oversight

Data monitoring committee
No
FDA-regulated drug
Yes
FDA-regulated device
No
View the source record on ClinicalTrials.gov ↗

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This study is completed, as verified in Aug 2022. You cannot join it, but the record below documents what was studied.

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Studies of the drug tested here: SP-102

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