Sign in
CompletedEarly phase 1

The Role of IL5 in Epithelial Cell Integrity

Key facts

Who runs it
Johns Hopkins University
Where
Baltimore, United StatesSee the 2 sites
Trial code
Status
Completed
Phase
Early phase 1
People taking part
17 people enrolled
Started
5 Sept 2023
Ended
27 Feb 2026
Type of study
Interventional, 2 groupsOne group gets no study treatment, for comparison.
Treatments tested
  • Mepolizumab
Record updated
6 July 2026

Who can take part

Age
18 years to 100 years
Sex
Women and men
Healthy volunteers
Cannot take part

The registry criteria, word for word

Show all 11 criteriaShow less

Who can take part

  • (1) sinonasal inflammation for greater than 12 weeks which include at least 2 of the following symptoms: nasal obstruction/congestion, nasal discharge (anterior or posterior), facial pressure/pain, reduction of sense of smell
  • (2) confirmation of the clinical symptoms by: (2a) CT scan evidence of paranasal sinus mucosal inflammation, and/or (2b) endoscopic exam evidence of purulence from the sinuses or ostiomeatal complex; and
  • (3) presence of nasal polyps seen on endoscopic exam or sinus CT scan

Who cannot take part

  • 7. exposure to oral or systemic IV glucocorticoids within 2 weeks of surgery
  • 8. exposure to immunomodulatory biologics will be excluded. These include, but are not limited to systemic treatment with biologics omalizumab, dupilumab, mepolizumab, benralizumab, reslizumab, or rituximab
  • 6. disease secondary to a clearly defined anatomic process, such as facial trauma, and obstruction due to sinonasal neoplasm
  • 1. Children under the age of 18 will be excluded due to:; possible confounding diagnosis of cystic fibrosis and other non-Type 2 inflammatory etiologies that commonly presents with nasal polyps in the pediatric population; lack of complete pneumatization of the majority of paranasal sinuses
  • 2. pregnant or lactating females,
  • 3. prisoners,
  • 4. mentally disabled
  • 5. persons unable to give informed consent will be contemplated for inclusion

Where in United States

  • Johns Hopkins Bayview Medical CenterBaltimore, United States
  • Johns Hopkins HospitalBaltimore, United States

About the trial

What the trial wants to find out

The goal of this laboratory study is the examine the effect of mepolizumab drug on the health and function of the cells lining the human nasal airways in vitro cell culture derived from patients with chronic rhinosinusitis with nasal polyposis. The main questions the study aims to study are:

Read full original descriptionShow less

1. To see what mepolizumab does to suppress inflammation of the human cells. 2. To see what mepolizumab does to maintain barrier integrity of epithelial cells

The 2 groups in the trial

  • Mepolizumab treatment armTreatment being tested

    Nasal epithelial cells will be exposed in vitro to mepolizumab in culture.

    Treatment: Mepolizumab

  • Control armNo study treatment, for comparison

    Nasal epithelial cells will be exposed in vitro to media without mepolizumab in culture

Data and sources

Registry record
Listed on ClinicalTrials.gov.
Record updated
6 July 2026