A Research Study to Characterize the Pharmacodynamics and Safety of Repeat Dose SP-102

An Open-label, Single-arm Study to Characterize the Pharmacodynamics and Safety of Repeat Dose SP-102 Administered by Epidural Injection in Subjects With Lumbosacral Radiculopathy

This is an open-label, single-arm, repeat dose study to characterize the pharmacodynamics and safety/tolerability of SP-102 administered by epidural injection.

Study Overview

• Status: Completed
• Conditions: Lumbosacral Radicular Pain
• Intervention / Treatment: Drug: SP-102

• Study Type: Interventional
• Enrollment (Actual): 19
• Phase: Phase 2

Contacts and Locations

Study Locations

• United States
  • Idaho
    • Boise, Idaho, United States, 83713
      • Semnur Research Site 1

Participation Criteria

Eligibility Criteria

• Ages Eligible for Study: 18 years to 70 years (Adult, Older Adult)
• Accepts Healthy Volunteers: No
• Genders Eligible for Study: All

Description

Main Inclusion Criteria:

• Able and willing to read, write, and understand the English language and provide English language written informed consent 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 child-bearing potential or a male capable of bearing a child, agrees to use an effective method of birth control 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 investigational 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 body mass index ≥40 kg/m2.

Study Plan

How is the study designed?

Design Details

• Primary Purpose: Treatment
• Allocation: N/A
• Interventional Model: Single Group Assignment
• Masking: None (Open Label)

Number of Arms

1

Arms and Interventions

Participant Group / Arm	Intervention / Treatment
Experimental: SP-102	Drug: SP-102; Injection

What is the study measuring?

Primary Outcome Measures

Outcome Measure	Measure Description	Time Frame
Change in Plasma Cortisol Concentrations From Baseline	Dexamethasone-induced hypothalamic-pituitary-adrenal (HPA) suppression is evaluated by monitoring SP-102 induced changes in plasma cortisol levels from Baseline. The T1 (index) and T2 (repeat) injections of SP-102 are separated by 4-8 weeks	12 Weeks
Change in Blood Glucose Levels From Baseline	Dexamethasone-induced hypothalamic-pituitary-adrenal (HPA) suppression is evaluated by monitoring SP-102 induced changes in blood glucose levels from Baseline. The T1 (index) and T2 (repeat) injections of SP-102 are separated by 4-8 weeks	12 Weeks
Change in White Blood Cell (WBC) Levels From Baseline	Dexamethasone-induced hypothalamic-pituitary-adrenal (HPA) suppression is evaluated by monitoring SP-102 induced changes in WBC levels from Baseline. The T1 (index) and T2 (repeat) injections of SP-102 are separated by 4-8 weeks	12 Weeks

Secondary Outcome Measures

Outcome Measure	Measure Description	Time Frame
Change in Numeric Pain Rating Scale (NPRS) Scores for Leg Pain From Baseline	The NPRS is an 11-point scale (0- to 10-point scale where 0 is no pain and 10 is worst pain imaginable) that allows subjects to rate the severity of their pain intensity at various points in time (Turk et al., 2003). Subjects used the NPRS to record their current pain, average pain over 24 hours, and worst pain over 24 hours for both affected leg(s) and back pain. NPRS average leg pain scores over 24 hours are presented.	12 weeks
Change in Numeric Pain Rating Scale (NPRS) Scores for Back Pain From Baseline	The NPRS is an 11-point scale (0- to 10-point scale where 0 is no pain and 10 is worst pain imaginable) that allows subjects to rate the severity of their pain intensity at various points in time (Turk et al., 2003). Subjects used the NPRS to record their current pain, average pain over 24 hours, and worst pain over 24 hours for both affected leg(s) and back pain. NPRS average back pain scores over 24 hours are presented.	12 weeks
Incidence of Treatment-Emergent Adverse Events (TEAEs)	Incidence of treatment-emergent AEs (TEAEs) related to study drug.	12 weeks

Collaborators and Investigators

• Sponsor: Semnur Pharmaceuticals, Inc.
• Collaborators: Worldwide Clinical Trials; Scilex Pharmaceuticals, Inc.

Publications and helpful links

General Publications

• Radnovich R, Heinz J, Ambrose C, Stannard E, Lissin D. Repeat Epidural Injections of SP-102 (Dexamethasone Sodium Phosphate Injectable Gel) in Subjects with Lumbosacral Radiculopathy. J Pain Res. 2021 May 5;14:1231-1239. doi: 10.2147/JPR.S303282. eCollection 2021.

Study record dates

Study Major Dates

• Study Start (Actual): July 13, 2018
• Primary Completion (Actual): March 15, 2019
• Study Completion (Actual): March 15, 2019

Study Registration Dates

• First Submitted: July 9, 2018
• First Submitted That Met QC Criteria: August 1, 2018
• First Posted (Actual): August 3, 2018

Study Record Updates

• Last Update Posted (Actual): January 13, 2022
• Last Update Submitted That Met QC Criteria: January 5, 2022
• Last Verified: January 1, 2022

More Information

Terms related to this study

• Keywords: leg pain; lumbosacral radicular pain; sciatica
• Other Study ID Numbers: SP-102-03

Plan for Individual participant data (IPD)

• Plan to Share Individual Participant Data (IPD)?: NO

Drug and device information, study documents

• Studies a U.S. FDA-regulated drug product: Yes
• Studies a U.S. FDA-regulated device product: No