Omnigen DFU Pilot Study

Diabetic Foot Ulcers Clinical Trial

Official title:

Pilot Study - Effectiveness of Omnigen in Addition to Standard Treatment in Treating Diabetic Foot Ulcers (DFU)

Clinical Trial Details — Status: Completed

Administrative data

• NCT number: NCT03483467
• Other study ID #: DHRD/2017/042
• Status: Completed
• Phase: N/A
• Start date: March 11, 2018
• Est. completion date: June 27, 2019

Study information

• Verified date: January 2020
• Source: University Hospitals of Derby and Burton NHS Foundation Trust
• Contact: n/a
• Is FDA regulated: No
• Study type: Interventional

Clinical Trial Summary

The Omnigen Pilot study aims to provide an evidence base for Omnigen as a treatment for Diabetic Foot Ulcers (DFU). It aims to achieve this by tailoring a regenerative therapy used for ocular surface repair to provide proactive non-surgical wound management of Diabetic Foot Ulcers (DFU).

Description:

This pilot study is designed as a multi-centre prospective, patient and observer blind, randomised controlled trial, recruiting patients from two clinical centres across the East Midlands; Derby Teaching Hospitals NHS Foundation Trust (DHFT) and Nottingham University Hospitals NHS Trust (NUH).

Eligible patients will be approached within diabetic foot clinics by their usual clinical carers to determine whether they are interested in participating in the study. They will be provided with written information about the study and the researcher will explain the study verbally to them and address any questions and concerns the patient may have. Patents will be given at least 24 hours to consider taking part in the trial before signing a consent form.

After informed consent has been given, baseline information will be collected. This will include demographic information, medical history and concomitant medication. eGFR and HbA1c will also be collected if not done within previous 3 months as part of standard care. The baseline wound status, assessment of ulcer infection according to Infectious Diseases Society of America (IDSA) criteria, peripheral pulses, neuropathy and ankle brachial pressure index will also be taken.

Participants will then be randomised to receive either standard of care or Omnigen graft with standard of care. Staff administering the Omnigen product will be aware of which treatment the participant is receiving however the participant and the research staff conducting the healing assessments will be blinded to their treatment allocation. Therefore the participant and the assessors will be blinded to the treatment given in order to minimize any bias in the collection of healing outcome data. For those randomized into the control arm, 'Dummy Packaging' will be used to ensure the blind is maintained.

Patients will be seen two weekly from their baseline visit until healing for up to 12 weeks and at 2 weeks post healing in those that heal. If a participant's foot ulcer heals before the final 12 weeks visit, they will attend a healing confirmation visit two weeks post the original heal date, however will not be required to attend any further fortnightly visits until the final blinded assessment visit at week 12 . If the participant's foot ulcer has not healed at 12 weeks then a blinded assessment should still be conducted at this time point.

Data is collected using the Dacima Clinical Suite Electronic Data Capture (EDC) software (Dacima Software Inc.)

Recruitment information / eligibility

• Status: Completed
• Enrollment: 31
• Est. completion date: June 27, 2019
• Est. primary completion date: June 27, 2019
• Accepts healthy volunteers: No
• Gender: All
• Age group: 18 Years and older

Eligibility

Inclusion Criteria:

• Patients with diabetes (according to WHO criteria) aged 18 years or over

• At least one full thickness ulcer below the malleolus of either foot, present for 4 weeks or more.

• At least one palpable pulse on the foot of the index limb or an ABPI >0.9

• Minimum ulcer diameter of 5 mm

• Maximum ulcer diameter of 20 mm.

• Able to attend clinic on a fortnightly basis

Exclusion Criteria:

• eGFR <20

• HbA1c >108

• Planned revascularisation during the course of the study or within the 4 weeks preceding the start of the study

• An ulcer of aetiology other than diabetes

• Depth of ulcer to bone, suspected or confirmed osteomyelitis

• Severe infection of the index ulcer

• Active Charcot of the foot of the index ulcer

• The need for negative pressure wound therapy

• On treatment with systemic steroids at a dose > equivalent of 5mg prednisolone for more than 5 days and/or systemic cytotoxic agents

• Unwilling or unable to attend all trial visits.

• Unwilling or unable to give written informed consent.

• Lacks the mental capacity to give consent

• Any other significant disease or disorder which, in the opinion of the Investigator, may either put the participants at risk because of participation in the trial, may influence the result of the trial or the participant's ability to participate in the trial

• Participants who have participated in another research trial involving a wound healing product within the past 12 weeks

Related Conditions & MeSH terms

• Diabetic Foot
• Diabetic Foot Ulcers
• Foot Ulcer

Intervention

Other:
• Omnigen
For those randomised onto the investigational arm, a dual layer of the Omnigen product will be applied at baseline and at every fortnightly trial visit until healing or the end of the 12 week period whichever occurs first, according to the standard study procedure.
• Dummy Packaging
For those randomised into the control arm, dummy packaging will be opened at the time of application of standard of care, to ensure the same experience is received to those on the experiential arm.

Locations

Country	Name	City	State
United Kingdom	University Hospitals Derby and Burton, Royal Derby Hospital	Derby
United Kingdom	University of Nottingham Teachig Hospitals, City Hospital	Nottingham

Sponsors (2)

Lead Sponsor	Collaborator
University Hospitals of Derby and Burton NHS Foundation Trust	NuVision Biotherapies Ltd

Country where clinical trial is conducted

United Kingdom, 

Outcome

Type	Measure	Description	Time frame	Safety issue
Primary	The primary outcome is wound healing (defined as full epithelialisation without drainage maintained for 2 weeks) within 12 weeks of starting study treatment.	To assess the whether higher proportion of wounds heal at 12 weeks in the investigational arm to the control arm - assessed by confirmation of healing at 12 week visit.	12 weeks
Secondary	Overall reduction in wound size (surface area, assessed by acetate tracing)	To assess the whether higher proportion of wounds reduce in size at 12 weeks in the investigational arm to the control arm - assessed by comparing acetate tracing in each arm.	12 weeks
Secondary	Time to healing (weeks) for those that heal within 12 weeks,	To assess the whether higher proportion of wounds heal at 12 weeks in the investigational arm to the control arm - assessed by proportion of confirmation of heeling visits conducted at 12 weeks within each arm.	12 weeks
Secondary	Proportion of wounds healed within 6 weeks	To assess the whether higher proportion of wounds heal at 6 weeks in the investigational arm to the control arm - assessed by proportion of confirmation of heeling visits conducted at 6 weeks within each arm.	6 weeks
Secondary	Adverse events (safety) including major and minor amputations and hospitalisation	To assess the safety of the intervention of Omnigen in comparison to standard of care. Review of SAEARs.	12 weeks
Secondary	Incidence of secondary infection	To assess the safety of the intervention of Omnigen in comparison to standard of care. Review of SAEARs.	12 weeks
Secondary	Feasibility of recruitment	To assess the feasibility of the study in regards to recruitment for a future full RCT. Recruitment rate, reasons for patients not randomising and reasons for investigators not randomising. Screening logs/protocol deviations.	12 weeks
Secondary	Pain in the area of the ulcer as assessed by patient completed VAS	To assess pain of ulcer through completion of VAS at every fortnightly visit to identify if pain reduces at a higher rate on the interventional arm than the control arm.	12 weeks
Secondary	Effectiveness of participant blind	To assess whether the blinding to arm allocation has been successful with the use of dummy packaging or whether the participants are able to identify which treatment they have received. This will be done by completion of a participant questionnaire at the end of the study.	12 weeks