Purpose

The goal of this clinical trial is to compare the safety and efficacy of AON-D21 versus placebo, both on top of standard of care, in patients with severe community acquired pneumonia admitted to ICU (or similar unit). The main questions to answer are: - The safety and tolerability of AON-D21 vs placebo. - The efficacy of AON-D21vs placebo. - The pharmacokinetics of AON-D21. - The pharmacodynamics of AON D21. - To identify biomarkers for patient stratification and analyses in future trials.

Condition

Eligibility

Eligible Ages
Between 18 Years and 85 Years
Eligible Sex
All
Accepts Healthy Volunteers
No

Inclusion Criteria

  • Community-acquired pneumonia, confirmed or suspected of bacterial or viral origin. - Admitted to an ICU (or similar unit). - Requiring respiratory support by HFO ≥ 30 L/min with FiO2 ≥ 30% or NIV or IMV or ECMO. - CRP ≥ 50 mg/L. - PaO2/FiO2 ratio ≤ 150 mmHg. - Treatment initiation no more than 48 h after initiation of respiratory support (HFO ≥ 30 L/min with FiO2 ≥ 30%, NIV, IMV or ECMO). - Written informed consent. - Age ≥ 18 years to ≤ 85 years. - Body mass index ≥ 17.5 kg/m² and ≤ 40 kg/m². - For female participants of childbearing potential, agreement to use dual methods of contraception until Day 60. - For male participants with female partners of childbearing potential, agreement to use barrier method of contraception until Day 60 and to refrain from donating sperm during the study and for 3 months after the last infusion.

Exclusion Criteria

  • Refractory septic shock. - Not expected to survive 72 hours. - Hospital-acquired or ventilator-associated pneumonia or known or suspected pneumonia due to aspiration or other physical injury or trauma or tuberculosis. - Known or suspected hypersensitivity to AON-D21 or any components of the formulation used (e.g., PEG, mannitol or EDTA) or a history of clinically relevant allergy requiring continuous treatment, or of anaphylaxis. - Known fibrotic lung disease, bronchiectasis or any other known severe chronic respiratory disease. - Active malignant disease. - Factors other than a pathogen suspected or confirmed to be causative for the respiratory insufficiency. - Hepatocellular injury defined by an ALT or AST value ≥ 3 times the ULN. Known acute or chronic liver disease with Child-Pugh C (See Appendix 13.6.2). - Any medical disease or condition that, in the opinion of the investigator(s), compromises the participant's safety or compromises the interpretation of the results. - Receiving chronic immunosuppressive therapy in relevant doses. - Known immunodeficiency disease/condition. - Nursing and pregnant women (defined as the state after conception until the termination of gestation, screened in all women of child-bearing potential with a chorionic gonadotrophin (hCG) blood test (local laboratory). - Current or recent participation in an investigational trial. - Systemic treatment with any complement inhibitor. - Known complement deficiency. - Unlikely to remain at the investigational site beyond 96 h.

Study Design

Phase
Phase 2
Study Type
Interventional
Allocation
Randomized
Intervention Model
Parallel Assignment
Intervention Model Description
Multi-center, interventional, randomized, double-blind, placebo-controlled study.
Primary Purpose
Treatment
Masking
Quadruple (Participant, Care Provider, Investigator, Outcomes Assessor)
Masking Description
Placebo-controlled

Arm Groups

ArmDescriptionAssigned Intervention
Experimental
AON-D21 plus Standard of Care
Sterile liquid formulation of AON-D21 in 4% mannitol + 0.05% EDTA in glass vials. It will be administered intravenously, for up to 10 days plus Standard of Care therapy for severe community-acquired pneumonia as per local guidelines.
  • Drug: AON-D21
    AON-D21 is a Pegylated L-configured aptamer that binds and thereby neutralizes the complement component C5a from activating both C5a receptors.
Placebo Comparator
Placebo plus Standard of Care
Sterile liquid formulation of 5% glucose solution in matched glass vials with a 1.5 mL fill volume. It will be administered intravenously, for up to 10 days plus Standard of Care therapy for severe community-acquired pneumonia as per local guidelines.
  • Drug: Placebo
    Sterile liquid formulation of 5% glucose solution in matched glass vials with a 1.5 mL fill volume.

Recruiting Locations

University of Alabama at Birmingham Heersink School of Medicine
Birmingham 4049979, Alabama 4829764 35233
Contact:
Derek Russell, MD

More Details

Status
Recruiting
Sponsor
Aptarion Biotech AG

Study Contact

Antonio Perez, MD
+49-30-959 982-140
perez@aptarion.com

Detailed Description

This clinical trial will enroll 100 participants, randomized 2:1 (AON-D21:placebo). Participants diagnosed with severe community-acquired pneumonia of bacterial or viral origin requiring admission to an intensive care unit or similar setting, will receive either AON-D21 or placebo intravenous infusions for up to 10 days. In addition, participants will receive standard of care as per local guidelines.

Notice

Study information shown on this site is derived from ClinicalTrials.gov (a public registry operated by the National Institutes of Health). The listing of studies provided is not certain to be all studies for which you might be eligible. Furthermore, study eligibility requirements can be difficult to understand and may change over time, so it is wise to speak with your medical care provider and individual research study teams when making decisions related to participation.