NCT03438747

Brief Summary

The aim of this trial is to evaluate if P-15L bone graft (investigational device) is not inferior in effectiveness and safety to local autologous bone (and allograft where necessary) as an extender (control device) when applied in instrumented transforaminal lumbar interbody fusion (TLIF) in subjects with degenerative disc disease (DDD). In addition to the general overall objective, a sub-group analysis will be performed on the high-risk subject population (tobacco use, obesity, diabetes), as previous studies have shown negative effects of smoking, obesity and diabetes on fusion and bone healing, increased peri/postoperative complications, and lower patient-reported outcome scores.

Trial Health

75
On Track

Trial Health Score

Automated assessment based on enrollment pace, timeline, and geographic reach

Enrollment
290

participants targeted

Target at P75+ for not_applicable

Timeline
22mo left

Started Apr 2018

Longer than P75 for not_applicable

Geographic Reach
1 country

34 active sites

Status
active not recruiting

Health score is calculated from publicly available data and should be used for screening purposes only.

Trial Relationships

Click on a node to explore related trials.

Study Timeline

Key milestones and dates

Study Progress82%
Apr 2018Feb 2028

First Submitted

Initial submission to the registry

February 13, 2018

Completed
7 days until next milestone

First Posted

Study publicly available on registry

February 20, 2018

Completed
2 months until next milestone

Study Start

First participant enrolled

April 24, 2018

Completed
9.9 years until next milestone

Primary Completion

Last participant's last visit for primary outcome

February 28, 2028

Expected
Same day until next milestone

Study Completion

Last participant's last visit for all outcomes

February 28, 2028

Last Updated

October 6, 2025

Status Verified

October 1, 2025

Enrollment Period

9.9 years

First QC Date

February 13, 2018

Last Update Submit

October 1, 2025

Conditions

Outcome Measures

Primary Outcomes (5)

  • Secondary surgical intervention

    No index level secondary surgical intervention

    72 Months

  • Fusion

    Achievement of fusion (Fusion is defined as evidence of bridging trabecular bone between the vertebral bodies by CT scan)

    72 Months

  • Oswestry Disability Index (ODI)

    At least 15-point improvement in Oswestry Disability Index (ODI)

    72 Months

  • Neurological deficit

    No new or worsening, persistent neurological deficit

    72 Months

  • No serious device-related adverse event

    No serious device-related adverse event

    72 Months

Secondary Outcomes (3)

  • Time to Fusion

    24 months

  • VAS pain scores

    72 months

  • Physical Function and Mental Health Composite Scores

    72 months

Study Arms (2)

P-15L Bone Graft

EXPERIMENTAL

The investigational group will be treated with P-15L Bone Graft in an instrumented TLIF

Device: P-15L Bone Graft

Local autologous bone

ACTIVE COMPARATOR

The active control group will be treated with local autologous bone in an instrumented TLIF

Other: Local autologous bone in a TLIF with Instrumentation

Interventions

The investigational group will be treated with P-15L in an instrumented TLIF

P-15L Bone Graft

The active control group will be treated local autologous bone in an instrumented TLIF

Local autologous bone

Eligibility Criteria

Age22 Years - 80 Years
Sexall
Healthy VolunteersNo
Age GroupsAdult (18-64), Older Adult (65+)

You may qualify if:

  • Skeletally mature adults between 22 and 80 years old (inclusive);
  • Back pain with radicular symptoms as evidenced by leg pain, confirmed by history and physical exam;
  • Oswestry Low Back Pain Disability Questionnaire score of ≥ 35;
  • Involved disc(s) between L2 and S1;

You may not qualify if:

  • Significant metabolic disease that in the surgeon's opinion might compromise bone growth such as osteoporosis, osteopenia, or osteomalacia;
  • Active malignancy;
  • Nondiscogenic source of symptoms (e.g. tumor, etc.);
  • Multiple level symptomatic degenerative disc disease where more than one level requires fusion;
  • Previous spinal instrumentation or a previous interbody fusion procedure at the involved level;
  • More than one level to be fused

Contact the study team to confirm eligibility.

Sponsors & Collaborators

Study Sites (34)

The University of Alabama at Birmingham

Birmingham, Alabama, 35294, United States

Location

Glendale Adventist Medical Center

Glendale, California, 91206, United States

Location

Keck School of Medicine USC

Los Angeles, California, 90033, United States

Location

UC Irvine Medical Center

Orange, California, 92868, United States

Location

UC Davis Spine Center

Sacramento, California, 95816, United States

Location

Cedars-Sinai

West Hollywood, California, 90069, United States

Location

Center for Spine and Orthopedics

Thornton, Colorado, 80229, United States

Location

UConn Health

Farmington, Connecticut, 06030, United States

Location

St. Francis Hospital and Medical Center

Hartford, Connecticut, 06105, United States

Location

University of South Florida

Tampa, Florida, 33606, United States

Location

Florida Orthopaedic Institute

Tampa, Florida, 33637, United States

Location

Northwestern University

Chicago, Illinois, 60611, United States

Location

Rush University Medical Center

Chicago, Illinois, 60612, United States

Location

Carle Foundation Hospital

Urbana, Illinois, 61801, United States

Location

Indiana Spine Group

Carmel, Indiana, 46032, United States

Location

OrthoIndy

Indianapolis, Indiana, 46278, United States

Location

Norton Leatherman Spine Center

Louisville, Kentucky, 40202, United States

Location

Orthopaedic Institute of Western Kentucky

Paducah, Kentucky, 42001, United States

Location

University of Michigan

Ann Arbor, Michigan, 48109, United States

Location

University Of Buffalo

Buffalo, New York, 14203, United States

Location

The Orthopedic Center at Mount Sinai West

New York, New York, 10029, United States

Location

SUNY Upstate Medical Center

Syracuse, New York, 13210, United States

Location

Duke University Medical Center

Durham, North Carolina, 27710, United States

Location

University of Cincinnati

Cincinnati, Ohio, 45267, United States

Location

Cleveland Clinic

Cleveland, Ohio, 44195, United States

Location

Rothman Institute

Philadelphia, Pennsylvania, 19107, United States

Location

Thomas Jefferson University

Philadelphia, Pennsylvania, 19107, United States

Location

Allegheny Health Network

Pittsburgh, Pennsylvania, 15212, United States

Location

University of Pittsburgh Medical Canter

Pittsburgh, Pennsylvania, 15213, United States

Location

Austin Neurosurgeons

Austin, Texas, 78746, United States

Location

Texas Back Institute

Plano, Texas, 73509, United States

Location

University of Texas Health Science Center at San Antonio

San Antonio, Texas, 78229, United States

Location

University of Virginia

Charlottesville, Virginia, 22908, United States

Location

Swedish Medical Center

Seattle, Washington, 98122, United States

Location

Related Publications (2)

  • Harrop JS, O'Toole JE, Steinmetz MP, Sasso RC, Chaput CD, Strenge KB, Maislin G, Mullin JP, Freeman TB, Guanciale A, Lantner H, Janssen ME, Schwartz DG, Small JM, Hsu WK, Arnold PM. P-15 Peptide Enhanced Bone Graft in Transforaminal Lumbar Interbody Fusion: A Randomized, Controlled, Investigational Device Exemption Study Demonstrating Improved Composite Clinical Success. Spine (Phila Pa 1976). 2026 Feb 15;51(4):238-247. doi: 10.1097/BRS.0000000000005579. Epub 2025 Dec 19.

  • Harrop JS, Steinmetz MP, O'Toole JE, Chaput CD, Sasso RC, Strenge KB, Maislin G, Mullin JP, Freeman TB, Guanciale A, Lantner H, Janssen ME, Schwartz DG, Small JM, Hsu WK, Arnold PM. P-15 Peptide Enhanced Bone Graft Improves Time to Fusion in Transforaminal Lumbar Interbody Fusion: A Randomized, Controlled, Investigational Device Exemption Study. Spine (Phila Pa 1976). 2026 Feb 15;51(4):229-237. doi: 10.1097/BRS.0000000000005580. Epub 2025 Dec 19.

MeSH Terms

Conditions

Intervertebral Disc Degeneration

Condition Hierarchy (Ancestors)

Spinal DiseasesBone DiseasesMusculoskeletal Diseases

Study Design

Study Type
interventional
Phase
not applicable
Allocation
RANDOMIZED
Masking
DOUBLE
Who Masked
PARTICIPANT, OUTCOMES ASSESSOR
Purpose
TREATMENT
Intervention Model
PARALLEL
Sponsor Type
INDUSTRY
Responsible Party
SPONSOR

Study Record Dates

First Submitted

February 13, 2018

First Posted

February 20, 2018

Study Start

April 24, 2018

Primary Completion (Estimated)

February 28, 2028

Study Completion (Estimated)

February 28, 2028

Last Updated

October 6, 2025

Record last verified: 2025-10

Locations