NCT02951559

SOLFAMU Study of Nasal Brushing Collected OLFActory MUcosa Samples in the Diagnosis of Human Encephalopathies

Study of Nasal Brushing Collected OLFActory MUcosa Samples in the Diagnosis of Human Encephalopathies

• Status: Unknown
• Phase: Phase 4
• Study type: Interventional
• Enrollment: 250 (estimated)
• Sponsor: University of Turin, Italy · Academic / Other
• Sex: All
• Age: 18 Years
• Healthy volunteers: Accepted

Summary

Encephalopathies are a group of central nervous system (CNS) affection with heterogeneous etiology. Several causes have been recognized including neurodegenerative, vascular, infectious, autoimmune, toxic or allergic affections or secondary to systemic disorders. While 30-50% of acute encephalitis remains without etiological definition, definitive criteria for neurodegenerative diseases are usually unavailable in vivo and possible or probable definitions are used. The Olfactory mucosa (OM) is the part of the nasal mucosa that carries the specialized sensory organ for the modality of smell; the olfactory epithelium is composed of five principal cell types including olfactory receptor neurons. A sample of OM may be collected through a rhinoscopy-guided brushing: it is well-accepted by patients, not-contraindicated in patients with raised intracranial pressure and associated with almost no side-effects. Nasal brushing has recently been proposed for the in vivo diagnosis of Creutzfeldt-Jakob disease (CJD). Aims of the project are: 1. Training of ear throat and nose (ETN), Infectious disease (ID) and neurology (NEU) specialists in the technique of nasal brushing; 2. Conducting a prospective study comparing the use of nasal brushing with gold-standard criteria in the diagnosis of Encephalopathies; 3. Increasing the diagnostic and prognostic power in the diagnosis of encephalopathies. A prospective, case control, multicentric study enrolling 400 patients and 100 controls (patients with nasal stenosis undergoing rhinoscopy for clinical reasons). Patients will be diagnosed and followed according to international guidelines and local clinical practice. Cerebrospinal fluid and magnetic resonance imaging will be used, where indicated, for the diagnosis according to the clinical or radiological suspect.

Conditions

• Encephalopathy
• HIV-encephalopathy
• Alzheimer Dementia

Interventions

Type	Name	Description
DEVICE	Nasal Brushing	Nasal brushing will be performed in non-sedated patients as follows. After administration of a local vasoconstrictor (1% epinephrine) with the use of a nasal tampon, inserted into the nasal cavity of the patient to locate the olfactory mucosa lining the nasal vault. A sterile, disposable brush ("Copanflock", "Copan", Brescia, Italy) will be inserted gently rolled on the mucosal surface, withdrawn,and immersed in 0.9% saline solution, UTM (Universal Transporter Medium) or 4% formaldehyde. Two swabs will be collected for each nostril.

Timeline

• Start date: 2016-03-01
• Primary completion: 2023-02-01
• Completion: 2023-02-01
• First posted: 2016-11-01
• Last updated: 2022-05-26

Locations

1 site across 1 country: Italy