Phase 1/2a Study on Allogeneic Osteoblastic Cells Implantation in Delayed-Union Fractures

November 9, 2021 updated by: Bone Therapeutics S.A

A Pilot Phase 1/2a, Multicentre, Open Proof-of-concept Study on the Efficacy and Safety of Allogeneic Osteoblastic Cells (ALLOB®) Implantation in Non-infected Delayed-Union Fractures

Fracture healing is a complex physiological process caused by interaction of cellular elements, cytokines and signaling proteins, which results in the formation of new bone. There is for now no universally accepted approach to evaluate the progression of fracture healing. Typically, a fracture is considered as a delayed-union when the bone has not united within a period of time that would be considered adequate for bone healing. Delayed-union suggests that union is slow but will eventually occur without additional surgical or non-surgical intervention, whereas non-union is defined as the cessation of all reparative process of healing.

The incidence of impaired healing is estimated to range from 5 to 10% of all long bone fractures, depending on the fracture site, the type and degree of injury, among other factors. Currently the treatment of choice remains bone allograft or autograft. This procedure shows in general good results but requires an invasive surgery of several hours under general anesthesia, followed by a few days of hospitalization. Because of this, major complications have been reported in up to 20-30% of patients.

The present Phase 1/2a study aims at demonstrating the safety and efficacy of ALLOB®, a proprietary population of allogeneic osteoblastic cells, in the treatment of delayed-union fractures of long bones. In this study, delayed-union is defined at the time of screening as an absence of healing of minimum 3 months and maximum 7 months (+/- 2 weeks) after the onset of the fracture.

Study Overview

Status

Completed

Conditions

Intervention / Treatment

Study Type

Interventional

Enrollment (Actual)

25

Phase

  • Phase 2
  • Phase 1

Participation Criteria

Researchers look for people who fit a certain description, called eligibility criteria. Some examples of these criteria are a person's general health condition or prior treatments.

Eligibility Criteria

Ages Eligible for Study

18 years to 80 years (ADULT, OLDER_ADULT)

Accepts Healthy Volunteers

No

Genders Eligible for Study

All

Description

Inclusion Criteria:

  • Patient (or patient's legally acceptable representative) capable to provide a written, dated, and signed informed consent prior to any study related procedure
  • Non-infected delayed-union fracture of a long bone of minimum 3 months and maximum 7 months (+/- 2 weeks)

Exclusion Criteria:

  • Fracture interline larger than 2.5 cm
  • Insufficient fracture stability
  • Multifocal fracture
  • Positive serology for hepatitis B, hepatitis C, Human Immunodeficiency Virus (HIV)
  • Current or past medical disease that could interfere with the evaluation of the safety and efficacy, as judged by the investigator
  • Severe renal or hepatic impairment

Study Plan

This section provides details of the study plan, including how the study is designed and what the study is measuring.

How is the study designed?

Design Details

  • Primary Purpose: TREATMENT
  • Allocation: NA
  • Interventional Model: SINGLE_GROUP
  • Masking: NONE

Arms and Interventions

Participant Group / Arm
Intervention / Treatment
EXPERIMENTAL: ALLOB® Implantation
One arm: ALLOB® Implantation
Drug: ALLOB® implantation
Each patient will undergo a single administration of ALLOB® into the delayed-union site under anesthesia.

What is the study measuring?

Primary Outcome Measures

Outcome Measure
Measure Description
Time Frame
Percentage of Responders at 6 Months (Efficacy of ALLOB)
Time Frame: 6 months
The success of the study will be based on the percentage of treated patients (ALLOB®) not failing under treatment. A patient will be considered as failed under treatment if, at Month 6: - He/she had a rescue surgery Or - The Global Disease Evaluation score (VAS) as perceived by the patient has not improved by at least 25% and the Tomographic Union Score (TUS) as assessed by CT scan has not increased by at least two points (versus baseline).
6 months

Collaborators and Investigators

This is where you will find people and organizations involved with this study.

Sponsor

Bone Therapeutics S.A

Publications and helpful links

The person responsible for entering information about the study voluntarily provides these publications. These may be about anything related to the study.

General Publications

Study record dates

These dates track the progress of study record and summary results submissions to ClinicalTrials.gov. Study records and reported results are reviewed by the National Library of Medicine (NLM) to make sure they meet specific quality control standards before being posted on the public website.

Study Major Dates

Study Start

February 1, 2014

Primary Completion (ACTUAL)

September 1, 2017

Study Completion (ACTUAL)

January 30, 2020

Study Registration Dates

First Submitted

December 19, 2013

First Submitted That Met QC Criteria

December 19, 2013

First Posted (ESTIMATE)

December 25, 2013

Study Record Updates

Last Update Posted (ACTUAL)

November 10, 2021

Last Update Submitted That Met QC Criteria

November 9, 2021

Last Verified

November 1, 2021

More Information

Terms related to this study

Keywords

Additional Relevant MeSH Terms

Other Study ID Numbers

  • ALLOB-DU1

This information was retrieved directly from the website clinicaltrials.gov without any changes. If you have any requests to change, remove or update your study details, please contact register@clinicaltrials.gov. As soon as a change is implemented on clinicaltrials.gov, this will be updated automatically on our website as well.

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