NCT05880524

Brief Summary

The goal of this (monocentric, randomised, placebo-controlled single-blinded; phase 2) clinical trial is to test the hypothesis that DNase 1 administration leads to a reduction in systemic immune response measured in patients after acute ischaemic stroke compared to control treatment. Participants will receive intravenous DNase 1 (500 µg/kg) or placebo (NaCl 0.9%) twice within 24±6 hours after symptom onset (last seen well). Blood samples will be taken at baseline, day 1 and 3. Personal visits will occur on baseline, day 1, 3 and discharge date. A telephone interview will be conducted on day 30±3.

Trial Health

43
At Risk

Trial Health Score

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

Trial has exceeded expected completion date
Enrollment
36

participants targeted

Target at P25-P50 for phase_2

Timeline
Completed

Started Dec 2024

Shorter than P25 for phase_2

Geographic Reach
1 country

1 active site

Status
not yet 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

First Submitted

Initial submission to the registry

April 30, 2023

Completed
1 month until next milestone

First Posted

Study publicly available on registry

May 30, 2023

Completed
1.5 years until next milestone

Study Start

First participant enrolled

December 1, 2024

Completed
1 year until next milestone

Primary Completion

Last participant's last visit for primary outcome

December 1, 2025

Completed
1 month until next milestone

Study Completion

Last participant's last visit for all outcomes

January 1, 2026

Completed
Last Updated

March 19, 2024

Status Verified

March 1, 2024

Enrollment Period

1 year

First QC Date

April 30, 2023

Last Update Submit

March 18, 2024

Conditions

Outcome Measures

Primary Outcomes (1)

  • Concentration of interleukin-1 beta in blood of patients with acute ischemic stroke receiving Dornase alfa compared to placebo treatment with Isotonic Saline Solution.

    Outcome of reduced systemic immune response measured by interleukin-1 beta concentration \[pg/ml\] (at 24±6 hours after symptom onset) measured by Enzyme-linked Immunosorbent Assay (ELISA).

    24±6 hours after symptom onset

Secondary Outcomes (9)

  • cfDNA concentration in blood.

    24±6 hours after symptom onset

  • DNase 1 activity in blood.

    24±6h after symptom onset

  • Concentration of DNase 1 in blood.

    24±6h after symptom onset

  • Analysis of the composition of the leukocyte population in blood.

    24±6 hours after symptom onset

  • Interleukin-6 concentration in blood after treatment.

    24±6 hours after symptom onset

  • +4 more secondary outcomes

Study Arms (2)

Pulmozyme

ACTIVE COMPARATOR

Dornase alfa; intravenous administration; 500 µg/kg

Drug: Dornase Alfa

Isotonic Saline Solution

PLACEBO COMPARATOR

NaCl 0,9 %; intravenous administration; 0,5 ml/kg

Drug: Isotonic Saline Solution

Interventions

Patients will receive an intravenous dose of Dornase alfa twice within within 24±6 hours after symptom onset, administered as a bolus.

Also known as: Pulmozyme
Pulmozyme

Patients will receive an intravenous dose of Isotonic saline solution twice within within 24±6 hours after symptom onset, administered as a bolus.

Also known as: NaCl 0,9%
Isotonic Saline Solution

Eligibility Criteria

Age18 Years+
Sexall
Healthy VolunteersNo
Age GroupsAdult (18-64), Older Adult (65+)

You may qualify if:

  • Patients with suspected acute ischemic stroke with symptom onset (last-seen-well) until Investigational drug application of less than 12 hours.
  • Consent to participate in the study.
  • Age ≥ 18 years.
  • NIHSS ≥10 at admission.

You may not qualify if:

  • Presence of any of the following conditions: Sinus or cerebral venous thrombosis, intracerebral haemorrhage, subarachnoid haemorrhage on qualified imaging (cCT with CT-A or MRI with MR-A). However, petechial haemorrhagic transformations of the index infarct and cerebral microhaemorrhages may be included.
  • Active malignant tumour disease in the last 6 months.
  • Current known immunosuppression due to immunomodulatory medication with immunosuppressive dose or underlying immunosuppressive disease (e.g. HIV).
  • Acute fulminant infectious disease in the last 7 days (fever \> 38.5°C or suspected by the Investigator).
  • Breastfeeding or pregnant woman, women of childbearing age without known use of contraceptives with positive urine or serum beta-human choriogonadotropin test.
  • Ischemic stroke or myocardial infarction in the previous 30 days.
  • Surgery in the previous 30 days, except minor dermatological or gynaecological surgery without anaesthesia and wound healing disorders and patients with thrombectomy.
  • Estimated or known weight \> 100 kg.
  • Known allergies or intolerance to dornase alfa (Pulmozyme) or recombinant protein products derived from Chinese hamster ovary cells.
  • Thrombocytopenia, leukocyte count \<1500/μl.
  • Severe renal insufficiency with GFR≤29 ml/min/ 1.73m³ and/or renal insufficiency requiring dialysis.

Contact the study team to confirm eligibility.

Sponsors & Collaborators

Study Sites (1)

Institute for Stroke and Dementia Research, Ludwig Maximilian University Munich, University Hospital

Munich, Bavaria, 81377, Germany

Location

Related Publications (2)

  • Sharma N, Dwivedi DJ, Fux L, Hayon Y, Ruderfer I, Nataf Y, Cani E, Liaw PC. Intravenous Delivery of Long-Acting Dnase I (PRX-119) In a Murine Model of Polymicrobial Abdominal Sepsis. Shock. 2026 Jan 1;65(1):76-84. doi: 10.1097/SHK.0000000000002666. Epub 2025 Jul 8.

  • Di G, Vazquez-Reyes S, Diaz B, Pena-Martinez C, Garcia-Culebras A, Cuartero MI, Moraga A, Pradillo JM, Esposito E, Lo EH, Moro MA, Lizasoain I. Daytime DNase-I Administration Protects Mice From Ischemic Stroke Without Inducing Bleeding or tPA-Induced Hemorrhagic Transformation, Even With Aspirin Pretreatment. Stroke. 2025 Feb;56(2):527-532. doi: 10.1161/STROKEAHA.124.049961. Epub 2025 Jan 27.

MeSH Terms

Conditions

Ischemic Stroke

Interventions

dornase alfa

Condition Hierarchy (Ancestors)

StrokeCerebrovascular DisordersBrain DiseasesCentral Nervous System DiseasesNervous System DiseasesVascular DiseasesCardiovascular Diseases

Study Officials

  • Martin Dichgans, Prof. Dr.

    Institute for Stroke and Dementia Research, LMU Hospital

    STUDY DIRECTOR

Central Study Contacts

Study Design

Study Type
interventional
Phase
phase 2
Allocation
RANDOMIZED
Masking
SINGLE
Who Masked
PARTICIPANT
Purpose
TREATMENT
Intervention Model
PARALLEL
Model Details: Monocentric, randomised, placebo-controlled single-blinded, Phase 2 trial
Sponsor Type
OTHER
Responsible Party
PRINCIPAL INVESTIGATOR
PI Title
Sponsor-Delegated Person and Principal Investigator

Study Record Dates

First Submitted

April 30, 2023

First Posted

May 30, 2023

Study Start

December 1, 2024

Primary Completion

December 1, 2025

Study Completion

January 1, 2026

Last Updated

March 19, 2024

Record last verified: 2024-03

Data Sharing

IPD Sharing
Will not share

Locations