About this trial
This study is a pragmatic, real-life, observational study recruiting adult patients with chronic rhinosinusitis with nasal polyposis who are eligible to start biologicals as standard treatment. The aim of this study is to observe the long-term outcomes of biologicals in CRSwNP patients with or without comorbid asthma in 'real life'. Moreover, the investigators will gain insight into the mechanisms of biologicals in the local and systemic immunity of these patients and investigate novel local and systemic biomarkers and predictors of response.
Eligibility criteria
This trial does not accept healthy volunteersQualifiers
Signed informed consent form (ICF),
Age between 18 and 80 years at time of signing ICF,
Able to comply with the study protocol, in the investigator's judgment,
In group one: patients with severe allergic and/or eosinophilic asthma, defined by being currently treated with a biological (SoC) OR starting treatment with a biological (SoC).
Disqualifiers
None
Trial population
Adult patients (between 18 and 80 years old) with severe allergic and/or eosinophilic asthma in group 1 and CRSwNP in group 2 that are receiving or will start to receive a biological as standard of care treatment, and agree on participating (signature of a written informed consent).
Trial design
Cohort
Prospective
Treatments tested in this trial
Mepolizumab
Biological/VaccineMonoclonal antibodies
Treatment groups
Trial outcomes
Primary outcomes
Clinical characteristics
Endoscopic total nasal polyp score to quantify nasal polyps with endoscopy. The higher the score, the more polyps are present in the nose. A unilateral score from 0 (absence of polyps) to 4 is given. The total nasal polyp score is the sum of the scores for both nostrils, thus ranging from 0 to 8, and is based on the continuous extension of nasal polyps beyond clear landmarks such as the upper and lower borders of the middle and inferior turbinate. This implies that a score can only be attributed if the criteria of the lower scores are met. E.g. a unilateral score of 3 cannot be given without nasal polyps also meeting the criteria for a score of 2, and similarly, a score of 4 cannot be given without having a score of 3.
Clinical characeristics
Nasal symptom scores: VAS symptom scores and SNOT-22 questionnaire will be recorded through a questionnaire. The need for surgery or rescue medication (e.g. Systemic corticosteroids, antibiotics,..) will be recorded each study visit. 1. VAS symptom score: minimum of 0 to maximum of 100. Higher VAS-scores indicate worse symptoms. 2. SNOT-22 score: a validated, self-administered questionnaire that is used to assess CRS patients. It consists of 22 items, rated from 0 ('no problem at all') to 5 ('worst possible symptom'). Possible SNOT-22 total scores range from 0 to 110, with higher SNOT-22 total scores indicating worse symptoms
Local nasal immunity
Nasal secretions will be harvested at each visit. Merocels (IVALON 4000 Plus 3,5 x 0,9 x 1,2 cm surgical products Fabco, New London, CT) will be placed in each nostril for 5 minutes and will be stored at -20°C until analysis. Key inflammatory markers will be measured: ECP, IL-5, sIL-5Rα, total IgE, periostin, total lambda- and kappa-FLC concentrations, MMP-9 and MPO. Additional analyses will then be performed to search for new biomarkers via complete proteomic analysis.
Sponsors and contacts
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