DETEC® Esterase for Screening Wound Infection at Point of Care

Non-interventional, Prospective, Single-blinded, Observational, Multicenter, Cohort, Clinical Study to Evaluate DETEC® Esterase for the Detection of Infections in Chronic Wounds

This non-interventional, single-blinded, prospective, observational study assesses the planar distribution of leukocyte esterase in wounds by placing wound exudates soaked wound dressings in the DETEC® Esterase device during routine wound care. The output of the device is correlated with clinical determination of infection to assess the device efficacy in identifying presumptive infections.

Study Overview

• Status: Recruiting
• Conditions: Diabetic Foot Ulcer; Venous Leg Ulcer; Pressure Ulcer
• Intervention / Treatment: Diagnostic test: DETEC® Esterase

Detailed Description

There is no commercial available device to diagnosze infection in chronic wounds. Since qualitative measures of leukocyte esterase (LE) have been used clinically as a biomarker to screen for various infectious diseases including urinary tract infections, peritonitis and joint infections, it is likely that LE can also be used a a biomarker to screen infection in chronic wounds. To test this hypothesis, an investigational device - DETEC® Esterase - has been developed to detect elevated LE in wound exudates absorbed wound dressings. With increasing LE levels, this coloration becomes more intense (from colorless/pink to dark purple) indicating infection.

The overall goals of the study are as follows:

1. To assess the efficacy of DETEC® Esterase in detecting ulcer wound infection by comparing device output with the wound care specialist's final determination of infection
2. To evaluate the effect of the subject's age, race, wound size, location, type, and clinical site on the device's ability to identify non-healing wounds.
3. To study the sensitivity, specificity, and accuracy of DETEC® Esterase in assessing infection by testing discarded wound dressings with varying levels of esterase activities.

Patients presenting themselves to the clinic with ulcer wounds will be assessed by the clinicians. Those with at least one clinical sign and symptom of a wound infection will be enrolled and recorded in the study. The participant's first visit can be concurrent with enrollment. During this visit, the participants' wound dressings will be tested using DETEC® Esterase device by a project nurse/tester not involved with subjects' wound management and the output recorded. Wounds will be managed by the clinicians who are blinded from the device output. Consequently, the clinician may adjudicate the presence or absence of infection based on all available information to make a clinical diagnosis of infection. The device determination of presumptive infection will then be compared with the results of the doctor's adjudication.

• Study Type: Observational
• Enrollment (Estimated): 200

Contacts and Locations

• Study Contact: Name: Wenjing Hu, PhD; Phone Number: 6823658775; Email: wenjing.hu@progenitec.com

Study Locations

• United States
  • Texas
    • Arlington, Texas, United States, 76018
      • Recruiting
      • Complex Healthcare Solutions
      • Contact: Jon Senkowsky, MD; Email: JonSenkowsky@complexhs.com
      • Principal Investigator: Jon Senkowsky, MD

Participation Criteria

Eligibility Criteria

• Ages Eligible for Study: 21 years and older (Adult, Older Adult)
• Accepts Healthy Volunteers: No

• Sampling Method: Probability Sample

Study Population

Participants with chronic wounds

Description

Inclusion Criteria:

• Adult (21 years), male or female, inpatient/outpatient, presenting with a wound
• Chronic wound open for at least 30 days, including (Diabetic foot ulcers (DFU), Wagner grade 1 to 3), (Pressure ulcers, stage 2 to 4), (Venous leg ulcers (VLU), confirmed by venous duplex/Doppler),
• For wounds on a lower extremity (i.e. DFU, VLU) an ankle-brachial index (ABI) of greater than 0.6 for the affected leg to ensure ischemia will not impact healing
• For diabetic foot ulcers - confirmed type 1 or type 2 diabetes mellitus with a hemoglobin A1C less than 10 percentage
• Wound shows clinical signs of infection - pain, erythema, edema, heat, surrounding erythema, swelling, or purulent exudate

Exclusion Criteria:

• History of autoimmune disease/ acquired immunodeficiency syndrome/Hepatitis
• Require treatment for primary or metastatic malignancy
• Any contra-indication to routine wound care and/or monitoring
• Women who are pregnant, lactating, or of childbearing potential and currently not taking adequate birth control
• Participation (less than 30 days prior to baseline) in an interventional trial which could have a potential effect on the study outcome, as determined by the Investigator
• Patients with a dry dressing

Study Plan

How is the study designed?

What is the study measuring?

Primary Outcome Measures

Outcome Measure	Measure Description	Time Frame
Positive predictive value of the device in the determination of infection in wounds with clinical signs of infection	The primary endpoint is agreement in infected wound determination between device output and providers' adjudication in wounds with suspected infection.	15 days from enrollment

Secondary Outcome Measures

Outcome Measure	Measure Description	Time Frame
Positive predictive value of the device in the determination of infection in wounds with various patient and wound conditions	The secondary endpoint is identifying infection in wounds with various biometry and disease conditions (age, gender, race, wound size, wound locations, wound types, infection status, and clinical sites).	15 days from enrollment
Likelihood of infection	Another secondary endpoint is the likelihood of infection with positive and negative test results	15 days from enrollment

Collaborators and Investigators

• Sponsor: Progenitec Inc.
• Investigators: Principal Investigator: Wenjing Hu, PhD, Progenitec Inc.

Study record dates

Study Major Dates

• Study Start (Actual): May 1, 2022
• Primary Completion (Estimated): May 31, 2024
• Study Completion (Estimated): December 31, 2024

Study Registration Dates

• First Submitted: October 28, 2020
• First Submitted That Met QC Criteria: October 28, 2020
• First Posted (Actual): November 4, 2020

Study Record Updates

• Last Update Posted (Estimated): November 16, 2023
• Last Update Submitted That Met QC Criteria: November 14, 2023
• Last Verified: November 1, 2023

More Information

Terms related to this study

• Additional Relevant MeSH Terms: Pathologic Processes; Cardiovascular Diseases; Vascular Diseases; Skin Diseases; Endocrine System Diseases; Diabetic Angiopathies; Skin Ulcer; Diabetes Complications; Diabetes Mellitus; Diabetic Neuropathies; Foot Diseases; Varicose Veins; Diabetic Foot; Foot Ulcer; Ulcer; Leg Ulcer; Varicose Ulcer; Pressure Ulcer
• Other Study ID Numbers: DETEC 002