Phase I Single-blind Clinical Trial to Evaluate the Safety and Local Immune Activation of a Toll-like Receptor 5 Agonist (FLAMOD) Administered by Aerosol (NEBUFLAG)

Institut National de la Santé Et de la Recherche Médicale, France

Status and phase

Not yet enrolling

Phase 1

Conditions

Pneumonia

Treatments

Drug: Placebo

Drug: FLAMOD

Study type

Interventional

Funder types

Other

Identifiers

NCT06681402

2024-515933-14-00 (EU Trial (CTIS) Number)

C20-48

Details and patient eligibility

About

This is a single-blind, randomized, placebo-controlled, dose-escalation phase I monocentric trial assessing a single administration of FLAMOD by aerosol in healthy subjects. The recruitment is performed by the Clinical Investigation Center of Tours. This trial is divided in two stages:

the "start-up phase" consisting of a dose escalation to ensure the safety of FLAMOD while allowing sufficient information on the molecule activity to be accumulated
the dose-finding phase estimating several dose-activity models and then selecting the one that best fits the data to then propose the dose for the next cohort of participants.

Enrollment

60 estimated patients

Sex

All

Ages

18 to 65 years old

Volunteers

Accepts Healthy Volunteers

Inclusion criteria

provision of signed and dated informed consent form
stated willingness to comply with all trial procedures, clinic visits, blood draws, and availability for the duration of the trial
human subjects who are between 18 and 65 years of age
weight of at least 50 kg and body mass index (BMI) within the range of 18 - 30 kg/m²
females of non-childbearing potential or of childbearing potential with effective contraception, males willing to practice contraception or having a partner using contraception (if having heterosexual intercourse)
non-smoker subject (included e-cigarette smoking) since at least 3 months and able to not smoke during the whole trial
maximum alcohol consumption defined as: i. no more than ten standard glasses per week; ii. no more than two standard glasses per day; iii. having alcohol-free day during the week
volunteer should be healthy after a clinical examination
affiliation with a social security scheme or beneficiary of such a scheme

Exclusion criteria

febrile and/or suspected infection
history of chronic pulmonary disease
history of acute pulmonary disease in the past 6 months
immunocompromised individuals, which includes immunodeficient patients (e.g., those with asplenism, acquired immune deficiency syndrome, or immunoglobulin deficiencies), patients with haematological diseases or solid cancers, solid organ or stem-cell transplant recipients, as well as patients with other conditions requiring immunosuppression (e.g., rheumatic and autoimmune diseases, inflammatory bowel disease, or multiple sclerosis)
administration, less than 5 x t1/2 before FLAMOD's administration, of any medication or treatment that may alter the FLAMOD immune responses, such as but not limited to:
- systemic corticosteroids exceeding 10 mg/day of prednisone equivalent for more than 7 consecutive days or for 10 or more days in total, within 1 month prior to the visit 1. Inhaled and intranasal steroid preparations whatever the dose within 1 month prior to the visit 1.
- cytotoxic, antineoplastic, immunosuppressant drugs including: calcineurin inhibitors immunoglobulin, mTOR inhibitors, JAK inhibitors, unspecific immunosuppressors, TNF-alpha inhibitors, immunosuppressive monoclonal antibodies [e.g., rituximab or infliximab], any anti-cytokine biological treatment (e.g. TNF-alpha inhibitors, anti-IL6 agents, anti-IL1 agents); within 12 months prior to the visit 1.
- concurrent immunostimulant drugs or biologic agents including: growth factors, cytokines, interleukins, interferons; within 12 months prior to the visit 1.
- administration of vaccine within 1 month prior to visit 1.
administration of anticoagulant treatments: warfarin (coumadin), fondaparinux, heparin (unfractionated Heparin), low molecular weight heparin (enoxaparin, dalteparin), direct oral anticoagulants (rivaroxaban, apixaban, edoxaban, dabigatran); within 1 week prior to the visit 1
pregnant or lactating woman
inability to tolerate a nebulization test with saline
clinically significant vital sign abnormalities (systolic blood pressure lower than 90 or over 150 mmHg, diastolic blood pressure lower than 50 or over 90 mmHg, or heart rate less than 50 or over 100 bpm)
abnormal ECG that is, in the investigator's opinion, clinically significant including: heart rate <50 BPM, PR interval > 220 ms, QRS interval ≥ 120 ms, QTc interval > 450 ms (QT corrected using Bazett's method), second or third-degree atrioventricular block, any rhythm, other than sinus rhythm, that is interpreted by the investigator to be clinically significant
subjects whose baseline laboratory values are outside of the normal range, as shown in Appendix 3 - Normal laboratory values unless the abnormality is considered not to be of clinical relevance by the investigator
positive Hepatitis B surface (HBs) antigen or anti Hepatitis C Virus (HCV) antibody, or positive results for Human Immunodeficiency Virus (HIV) 1 or 2 tests
positive urine nicotine test
positive urine multi-drug test
abnormal chest x-ray
clinically significant abnormality of baseline spirometry tests: forced vital capacity (FVC) <90% predicted; forced expiratory volume in one second (FEV1) <80% predicted; FEV1/FVC ratio <80% or diffusion capacity of the lung for carbon monoxide (DLCO) <70% predicted
history or presence of drug or chronic alcohol abuse
history of severe psychiatric disorders that may affect participation in the trial
significant concurrent illness and any other condition that, in the opinion of the investigator, would compromise the safety or rights of a volunteer participating in the trial or render the subject unable to comply with the protocol
person subject to a legal protection measure
subject in the exclusion period of a previous study
known allergy or intolerance to study drug (including any of its constituents, e.g. FLAMOD and polysorbate 80)