Safety Evaluation of Seraph® 100 to Reduce Bacteremia in Patients on Hemodialysis

Safety and Performance Evaluation of the Seraph® 100 Microbind® Affinity Blood Filter for Reducing Bacteremia in Patients on Hemodialysis

The purpose of this study is to determine whether the Seraph® 100 Microbind® Affinity Blood Filter (Seraph 100) is safe in the treatment of dialysis patients with bacteremia.

Study Overview

• Status: Completed
• Conditions: Bacteremia; Bacterial Infection
• Intervention / Treatment: Device: Seraph 100 Filter

Detailed Description

This trial is a prospective, non-randomized study in patients as an adjunctive treatment for blood stream infection (BSI) in patients on renal replacement therapy. The heparin surface being studied is currently marketed on extracorporeal circuits. It has been shown to absorb various types of Gram positive and Gram negative bacteria and to reduce toxins and cytokines in in vitro studies using whole blood. For this study, patients on renal replacement therapy who develop bacteremia will have the Seraph® 100 Microbind® Affinity Blood Filter included in the dialysis circuit for up to 4 hours, on one day, with hourly monitoring. Patients will be followed for 14 days post treatment. Patients will be monitored by vital signs and laboratory indices on the day of treatment and on post procedure day 1, 2, 3, 4, 5, 6, 7 and 14.

• Study Type: Interventional
• Enrollment (Actual): 15
• Phase: Not Applicable

Contacts and Locations

Study Locations

• Germany
  • Braunschweig, Germany, 38126
    • Klinikum Braunschweig
  • Frankfurt, Germany
    • Universitaetsklinikum-Frankfurt
  • Hannöver, Germany, 30625
    • Medizinische Hochschule-Hannover
  • Muenster, Germany, 48149
    • Universitätsklinikum Muenster

Participation Criteria

Eligibility Criteria

• Ages Eligible for Study: 16 years to 88 years (Adult, Older Adult)
• Accepts Healthy Volunteers: No
• Genders Eligible for Study: All

Description

Inclusion Criteria:

1. Require renal replacement therapy.
2. Be ≥ 18 years old and ≤ 90 years old

3. Positive blood culture and one of the following:

   1. Clinical evidence of a catheter exit site to tunnel infection as evidenced by redness, tenderness or purulence.
   2. Bacteremia is proven with two separate blood cultures from independent vein punctures.
   3. A blood culture with Staphylococcus aureus where the time to positivity is within 14 hours.
   4. Growth from a blood culture taken from the hemodialysis catheter 2 or more hours before the growth of a blood culture drawn peripherally at the same time.

Exclusion Criteria:

1. Have an arteriovenous polytetrafluoroethylene (PTFE) graft.
2. Lack of a commitment to full aggressive support.
3. Have inability to maintain a minimum mean arterial pressure of ≥ 65 mm Hg despite vasopressor therapy and fluid resuscitation.
4. Have had chest compressions as part of cardiopulmonary resuscitation (CPR)
5. Have had an acute myocardial infarction (MI) within the past 3 months.
6. Have had serious injury within 36 hours of screening.
7. Have uncontrolled hemorrhage.
8. Are not expected to live > 14 days.
9. Have malignancy and are not expected to live 42 days.
10. Have neutropenia (absolute neutrophil count <500 cells/µL).
11. Have Child-Pugh Class C cirrhosis.
12. Have New York Heart Association Class IV Heart Failure or an ejection fraction <30%.
13. Have known Antithrombin III deficiency.
14. Have platelet count <30,000/µL.
15. Cannot have intravenous (IV) supplemental iron halted during trial period.
16. Are currently involved in an investigational drug or device trial.
17. Have been previously enrolled in this clinical trial.
18. Next hemodialysis treatment will not take place for at least 24 hours after enrollment.
19. Serious bleedings and clotting disorders, determined by blood transfusion of > 2 units of packed red blood cells, or, An acute (48 h) hemoglobin decline of at least 2 g/dL, transfusion requirement of >4 units over 48h, objective evidence of bleed, documented by physician.
20. Breast feeding and pregnant women

21. Contraindications for heparin sodium for injection are:

    1. Have heparin sensitivity
    2. Severe thrombocytopenia.
    3. With an uncontrolled active bleeding state, except when this is due to disseminated intravascular coagulation
    4. In whom suitable blood coagulation tests, e.g. whole blood clotting time, partial thromboplastin time, etc cannot be performed at appropriate intervals (this contraindication refers to full-dose heparin; there is usually no need to monitor coagulation parameters in patients receiving low-dose heparin)

Study Plan

How is the study designed?

Design Details

• Primary Purpose: Treatment
• Allocation: N/A
• Interventional Model: Single Group Assignment
• Masking: None (Open Label)

Number of Arms

1

Arms and Interventions

Participant Group / Arm	Intervention / Treatment
Other: Seraph 100 Filter; Renal replacement patient with bacteremia.	Device: Seraph 100 Filter; Treatment of renal replacement therapy patients with bacteremia.; Other Names: Seraph 100

What is the study measuring?

Primary Outcome Measures

Outcome Measure	Measure Description	Time Frame
Demonstrate Safety of the ExThera Medical Seraph® 100 Microbind® Affinity Blood Filter in a Hemodialysis Circuit Assessed by Rate of Adverse Events.	Demonstrate safety of the ExThera Medical Seraph® 100 Microbind® Affinity Blood Filter in a hemodialysis circuit assessed by rate of adverse events. No adverse events occured	14 days

Secondary Outcome Measures

Outcome Measure	Measure Description	Time Frame
Reduction of Bacteria in Blood Passed Through the Seraph 100 Filter.	Pathogen reduction of > 40 % as CFU/mL or an increase in time to positivity (TTP) of > 22 minutes in blood passed through the Seraph 100 Filter	4 hours

Collaborators and Investigators

• Sponsor: ExThera Medical Corporation
• Investigators: Principal Investigator: Jan T Kielstein, MD,FASN,FERA, Klinikum Braunschweig

Publications and helpful links

General Publications

• Eden G, Schmidt JJ, Buttner S, Kumpers P, Hafer C, Rovas A, Koch BF, Schmidt BMW, Kielstein JT. Safety and efficacy of the Seraph(R) 100 Microbind(R) Affinity Blood Filter to remove bacteria from the blood stream: results of the first in human study. Crit Care. 2022 Jun 17;26(1):181. doi: 10.1186/s13054-022-04044-7.

Study record dates

Study Major Dates

• Study Start: February 1, 2016
• Primary Completion (Actual): June 7, 2018
• Study Completion (Actual): June 7, 2018

Study Registration Dates

• First Submitted: September 22, 2016
• First Submitted That Met QC Criteria: September 22, 2016
• First Posted (Estimate): September 26, 2016

Study Record Updates

• Last Update Posted (Actual): August 12, 2019
• Last Update Submitted That Met QC Criteria: June 27, 2019
• Last Verified: January 1, 2018

More Information

Terms related to this study

• Additional Relevant MeSH Terms: Pathologic Processes; Infections; Systemic Inflammatory Response Syndrome; Inflammation; Bacterial Infections and Mycoses; Sepsis; Bacteremia; Bacterial Infections
• Other Study ID Numbers: CP001

Plan for Individual participant data (IPD)

• Plan to Share Individual Participant Data (IPD)?: No