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Completed Phase 3 Interventional Results available

SI-6603 (Condoliase) Study for Lumbar Disc Herniation (Discovery 6603 Study)

ClinicalTrials.gov ID: NCT03607838

Public ClinicalTrials.gov record NCT03607838. Field values are reproduced from the official study page; the official ClinicalTrials.gov record remains the source of truth for eligibility, enrollment, and contact information.

ClinicalTrials.gov public records Last synced Oct 22, 2026, 8:51 PM EDT

Data is sourced from official ClinicalTrials.gov public API records. Always review the official ClinicalTrials.gov record for the latest information.

Official title

A Multicenter, Randomized, Double-blind, Sham-controlled, Comparative Study of SI-6603 in Subjects With Lumbar Disc Herniation (Phase 3)

Brief summary

Reproduced verbatim from the official ClinicalTrials.gov record. Not medical advice.

This study is to evaluate the effectiveness of a single-dose intervertebral disc injection of SI-6603 in subjects with lumbar disc herniation (LDH)

Study identification

NCT ID
NCT03607838
Recruitment status
Completed
Study type
Interventional
Phase
Phase 3
Lead sponsor
Seikagaku Corporation
Industry
Enrollment
352 participants

Conditions and interventions

Interventions

Drug

Eligibility (public fields only)

Age range
30 Years to 70 Years
Sex
All
Healthy volunteers
Healthy volunteers not accepted

This page does not interpret eligibility. Detailed inclusion and exclusion criteria are on the official ClinicalTrials.gov record.

Study timeline

Start date
Nov 7, 2018 (Actual)
Primary completion
Aug 3, 2022 (Actual)
Completion
Mar 21, 2023 (Actual)
Last update posted
Jul 24, 2025

2018 – 2023

United States locations

U.S. sites
67
U.S. states
27
U.S. cities
63
Facility City State ZIP Site status
Delta Clinical Research Mobile Alabama 36609 —
Pain Medicine Associates, Inc. Fountain Valley California 92708 —
University of California San Diego - Center for Pain Medicine La Jolla California 92037 —
The Helm Center for Pain Management Laguna Woods California 92637 —
The Anand Spine Group Los Angeles California 90048 —
VA Greater Los Angeles Healthcare System Los Angeles California 90073 —
Samaritan Center for Medical Research Los Gatos California 95032 —
UC Davis Spine Center Sacramento California 95816 —
Source Healthcare Santa Monica California 90403 —
Boulder Neurosurgical Associates Boulder Colorado 80303 —
DBPS Research, LLC Greenwood Village Colorado 80111 —
International Spine, Pain, and Performance Center Washington D.C. District of Columbia 20006 —
Florida Spine Institute Clearwater Florida 33765 —
Spine and Orthopedic Center Deerfield Beach Florida 33441 —
Deland Clinical research Unit DeLand Florida 32720 —
Science Connections, LLC Doral Florida 33166 —
Coastal Clinical Research Fernandina Beach Florida 32034 —
Holy Cross Medical Group Fort Lauderdale Florida 33334 —
Coastal Clinical Research Jacksonville Florida 32224 —
Genoma Research Group, Inc. Miami Florida 33155 —
Science Connections, LLC (Kendall) Miami Florida 33175 —
AMPM Research Clinic Miami Gardens Florida 33169 —
Pain Relief Centers St. Petersburg Florida 33709 —
Pain Relief Centers Sun City Center Florida 33573 —
Tampa Pain Relief Center Tampa Florida 33603 —
Florida Pain Relief Group, PLLC Tampa Florida 33614 —
Premier Medical Associates The Villages Florida 32159 —
Conquest Research Winter Park Florida 32789 —
Augusta University - Medical College of Georgia Augusta Georgia 30912 —
Georgia Institute for Clinical Research, LLC Marietta Georgia 30060 —
Injury Care Research Boise Idaho 83713 —
Millennium Pain Center Bloomington Illinois 61704 —
Chicago Anesthesia Pain Specialists Chicago Illinois 60657 —
Indiana Spine Group Carmel Indiana 46032 —
Neuroscience Research Center LLC Overland Park Kansas 66210 —
OtriMed Clinical Research Edgewood Kentucky 41017 —
Clinical Trials of Southwest Louisiana, LLC Lake Charles Louisiana 70601 —
Tulane University School of Medicine New Orleans Louisiana 70112 —
St. Louis Pain Consultants Chesterfield Missouri 63017 —
Comprehensive and Interventional Pain Management LLP Henderson Nevada 89052 —
Innovative Pain Care Center Las Vegas Nevada 89106 —
Interventional Spine Medicine Barrington New Hampshire 03825 —
New Jersey Regenerative Institute Cedar Knolls New Jersey 07927 —
New York - Presbyterian Queens Flushing New York 11355 —
Drug Trials America Hartsdale New York 10530 —
Ainsworth Institute Of Pain Management New York New York 10022 —
University of Rochester- Neuromedicine Pain Management Center Rochester New York 14618 —
The Center for Clinical Research Winston-Salem North Carolina 27103 —
Clinical Inquest Center Ltd Beavercreek Ohio 45431 —
The Ohio State University Wexner Medical Center Columbus Ohio 43210 —
META Medical Research Institute Dayton Ohio 45432 —
Medical Research International Oklahoma City Oklahoma 73109 —
Oklahoma City Clinical Research Center Oklahoma City Oklahoma 73159 —
Main Line Spine King of Prussia Pennsylvania 19406 —
Clinical Trials of South Carolina Charleston South Carolina 29406 —
SC Pain & Spine Specialists Murrells Inlet South Carolina 29576 —
Ascension Spine and Scoliosis Center Austin Texas 78731 —
HRMD Research Dallas Texas 75240 —
Advanced Medical Trials Georgetown Texas 78628 —
Interventional Pain Specialists Pasadena Texas 77505 —
ARH Research, LLC. The Woodlands Texas 77382 —
JBR Clinical Research Salt Lake City Utah 84107 —
University of Virginia Orthopaedic Spine Center Charlottesville Virginia 22903 —
Virginia iSpine Physicians, P.C. Richmond Virginia 23235 —
Gershon Pain Specialists Virginia Beach Virginia 23454 —
Swedish Pain Management Seattle Washington 98122 —
West Virginia University Morgantown West Virginia 26506 —

Site contact phone numbers, emails, and investigator names are intentionally not displayed here. Open the official ClinicalTrials.gov record for site contact information.

About this trial record page

What this page shows
Public field values for ClinicalTrials.gov record NCT03607838, including study identification, conditions, interventions, eligibility (age, sex, healthy volunteer), timeline, and U.S. site list.
What this page does not do
No medical advice, eligibility judgments, treatment recommendations, study quality scoring, or AI-generated medical summaries. No site contact phone numbers, emails, or investigator names.
Where the data comes from
Sourced from the official ClinicalTrials.gov public API. The official record is the source of truth.
Last refresh
Last update posted Jul 24, 2025 · Synced Oct 22, 2026

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Open the official record

The complete public registry record, listed eligibility criteria, and available contact information for NCT03607838 live on ClinicalTrials.gov.

View official ClinicalTrials.gov record →