This is the first-in-human study with KIT2014 designed to provide safety, tolerability and pharmacokinetic data in healthy volunteers.

This is a double-blind, randomised, placebo-controlled study to assess the safety, tolerability, and pharmacokinetics of ascending doses of inhaled KIT2014 administered via nebulizer to healthy adult participants. The study will be conducted in 2 parts, Part A (single ascending dose, SAD) and Part B (multiple ascending doses, MAD).

Major Inclusion Criteria:

1. Must have given written informed consent before any study-related activities are performed and must be able to understand the full nature and purpose of the study, including possible risks and adverse effects.
2. Adult males and females, 18 to 55 years of age (inclusive) at screening.
3. BMI ≥ 18.0 and ≤ 32.0 kg/m2, with a body weight of at least 60 kg for males and 50 kg for females.
4. Medically healthy, as determined by pre-study medical history, and without clinically significant abnormalities.
5. Normal spirometry results at Screening based on FEV1 ≥ 80% of predicted, FVC ≥ 80% of predicted and FEV1/FVC ratio ≥0.70.

Major Exclusion Criteria:

1. History or presence of clinically significant cardiovascular, pulmonary, hepatic, renal, haematological, gastrointestinal, endocrine, immunologic, dermatologic, psychiatric, or neurological disease/disorder, including any acute illness, determined by the PI to be clinically relevant.
2. Any respiratory infection or relevant respiratory problem within 14 days of Day 1.

Other inclusion/exclusion eligibility criteria apply.