NCT04853836

Brief Summary

Olfactory dysfunction is common among patients with Corona-Virus-Infection-Disease (COVID)-19, and up to 30% of patients may report persistent disorders of smell or taste as a long-term sequelae. This randomized-controlled study has addressed to compare the efficacy of neuro-protective and anti-inflammatory agents palmitoylethanolamide (PEA) and Luteolin(Treatment) with control (olfactory training) in a cohort of patients who present persistent smell disorders after resolution from Covid-19 and negative swab for 4 months at least.

Trial Health

87
On Track

Trial Health Score

Automated assessment based on enrollment pace, timeline, and geographic reach

Enrollment
200

participants targeted

Target at P75+ for phase_4

Timeline
Completed

Started Nov 2020

Geographic Reach
1 country

1 active site

Status
completed

Health score is calculated from publicly available data and should be used for screening purposes only.

Trial Relationships

Click on a node to explore related trials.

Study Timeline

Key milestones and dates

Study Start

First participant enrolled

November 15, 2020

Completed
5 months until next milestone

First Submitted

Initial submission to the registry

April 16, 2021

Completed
5 days until next milestone

First Posted

Study publicly available on registry

April 21, 2021

Completed
6 months until next milestone

Primary Completion

Last participant's last visit for primary outcome

October 28, 2021

Completed
10 months until next milestone

Study Completion

Last participant's last visit for all outcomes

August 31, 2022

Completed
Last Updated

November 16, 2022

Status Verified

November 1, 2022

Enrollment Period

12 months

First QC Date

April 16, 2021

Last Update Submit

November 12, 2022

Conditions

Outcome Measures

Primary Outcomes (1)

  • Recovery of smell

    Change of Sniff scores from T0.The Sniffin' Sticks battery was administered following a previously established protocol, using pen-like devices filled with odorants.Three score subtests were conducted to measure olfactory function: 1. detection threshold ("T", the lowest concentration at which an odor can be perceived), 2. odor discrimination ("D", ability to distinguish between odors) and 3. odor identification ("I" ability to assign names to odors). Possible scores ranged from 1-16 for the detection threshold subtest and 0-16 for both the discrimination and identification subtests. Adding these for yielded a TDI "Sniff score." Anosmia was defined as a score of \<17, hyposmia by a score 17 to 30.75, and normosmia by a score of ≥31

    T1 (30 days), T2 (60 days), T3 (90 days)

Secondary Outcomes (1)

  • Parosmia after treatment

    60 days (T2) and 90 days (T3)

Study Arms (4)

Rehabilitation therapy only (control group)

PLACEBO COMPARATOR

Olfactory training / stimulation through Sniffin' Sticks, administered twice every day (10 minutes session)

Procedure: Olfactory Rehab

Rehabilitation and treatment with PEA-LUT

ACTIVE COMPARATOR

Olfactory training / stimulation through Sniffin' Sticks, plus daily treatment with PEA/Luteolin oral supplement

Combination Product: co-ultraPEALut

Treatment with PEA-LUT one sachet daily

ACTIVE COMPARATOR

Patients in this group only used a single dose of PEA-LUT

Drug: PEA-LUT 1 sachet

Treatment with PEA-LUT two sachet daily

ACTIVE COMPARATOR

Patients in this group only used two doses of PEA-LUT

Drug: PEA-LUT 2 sachet day

Interventions

co-ultraPEALutCOMBINATION_PRODUCT

Olfactory rehab 10 minutes twice a day for all the observation period + co-ultraPEALut (700 PEA + 70 Luteolin) 1 dose daily.

Rehabilitation and treatment with PEA-LUT

Olfactory Rehabilitation10 minutes twice a day for all the observation period

Rehabilitation therapy only (control group)

Only 1 sachet day of PEA-LUT no olfactory training

Treatment with PEA-LUT one sachet daily

2 sachets day of PEA-LUT no olfactory training

Treatment with PEA-LUT two sachet daily

Eligibility Criteria

Age18 Years - 85 Years
Sexall
Healthy VolunteersYes
Age GroupsAdult (18-64), Older Adult (65+)

You may qualify if:

  • to 90 years with confirmed history of COVID-19 (positive nasopharyngeal swab for SARS-CoV-2)
  • subjective olfactory dysfunction persisting ≥ 90 days after follow-up negative COVID-19 nasopharyngeal swab

You may not qualify if:

  • previous history of olfactory-gustatory disorders
  • impaired cognitive function
  • history of neurodegenerative disease
  • medical therapy with possible effects on olfactory function
  • presence of rhinological disorders (sinusitis, rhinosinusitis, sinonasal polyposis, atrophic rhinitis, allergy)
  • history of chemo-radiotherapy of the head and neck region
  • history of stroke or neurotrauma
  • severe nasal blockage from stenosis of deformity
  • severe psychiatric illness (e.g. schizophrenia, bipolar disorder, olfactory hallucination)
  • previous sinonasal
  • nasopharyngeal tumors.

Contact the study team to confirm eligibility.

Sponsors & Collaborators

Study Sites (1)

Multicentric

Roma, Italy

Location

Related Publications (13)

  • Ralli M, Di Stadio A, Greco A, de Vincentiis M, Polimeni A. Defining the burden of olfactory dysfunction in COVID-19 patients. Eur Rev Med Pharmacol Sci. 2020 Apr;24(7):3440-3441. doi: 10.26355/eurrev_202004_20797. No abstract available.

    PMID: 32329813BACKGROUND
  • Meinhardt J, Radke J, Dittmayer C, Franz J, Thomas C, Mothes R, Laue M, Schneider J, Brunink S, Greuel S, Lehmann M, Hassan O, Aschman T, Schumann E, Chua RL, Conrad C, Eils R, Stenzel W, Windgassen M, Rossler L, Goebel HH, Gelderblom HR, Martin H, Nitsche A, Schulz-Schaeffer WJ, Hakroush S, Winkler MS, Tampe B, Scheibe F, Kortvelyessy P, Reinhold D, Siegmund B, Kuhl AA, Elezkurtaj S, Horst D, Oesterhelweg L, Tsokos M, Ingold-Heppner B, Stadelmann C, Drosten C, Corman VM, Radbruch H, Heppner FL. Olfactory transmucosal SARS-CoV-2 invasion as a port of central nervous system entry in individuals with COVID-19. Nat Neurosci. 2021 Feb;24(2):168-175. doi: 10.1038/s41593-020-00758-5. Epub 2020 Nov 30.

    PMID: 33257876BACKGROUND
  • Levy JM. Treatment Recommendations for Persistent Smell and Taste Dysfunction Following COVID-19-The Coming Deluge. JAMA Otolaryngol Head Neck Surg. 2020 Aug 1;146(8):733. doi: 10.1001/jamaoto.2020.1378. No abstract available.

    PMID: 32614399BACKGROUND
  • D'Ascanio L, Pandolfini M, Cingolani C, Latini G, Gradoni P, Capalbo M, Frausini G, Maranzano M, Brenner MJ, Di Stadio A. Olfactory Dysfunction in COVID-19 Patients: Prevalence and Prognosis for Recovering Sense of Smell. Otolaryngol Head Neck Surg. 2021 Jan;164(1):82-86. doi: 10.1177/0194599820943530. Epub 2020 Jul 14.

    PMID: 32662745BACKGROUND
  • Chiu A, Fischbein N, Wintermark M, Zaharchuk G, Yun PT, Zeineh M. COVID-19-induced anosmia associated with olfactory bulb atrophy. Neuroradiology. 2021 Jan;63(1):147-148. doi: 10.1007/s00234-020-02554-1. Epub 2020 Sep 15.

    PMID: 32930820BACKGROUND
  • Laurendon T, Radulesco T, Mugnier J, Gerault M, Chagnaud C, El Ahmadi AA, Varoquaux A. Bilateral transient olfactory bulb edema during COVID-19-related anosmia. Neurology. 2020 Aug 4;95(5):224-225. doi: 10.1212/WNL.0000000000009850. Epub 2020 May 22. No abstract available.

    PMID: 32444492BACKGROUND
  • Lee MH, Perl DP, Nair G, Li W, Maric D, Murray H, Dodd SJ, Koretsky AP, Watts JA, Cheung V, Masliah E, Horkayne-Szakaly I, Jones R, Stram MN, Moncur J, Hefti M, Folkerth RD, Nath A. Microvascular Injury in the Brains of Patients with Covid-19. N Engl J Med. 2021 Feb 4;384(5):481-483. doi: 10.1056/NEJMc2033369. Epub 2020 Dec 30. No abstract available.

    PMID: 33378608BACKGROUND
  • Stoyanov GS, Petkova L, Dzhenkov DL, Sapundzhiev NR, Todorov I. Gross and Histopathology of COVID-19 With First Histology Report of Olfactory Bulb Changes. Cureus. 2020 Dec 4;12(12):e11912. doi: 10.7759/cureus.11912.

    PMID: 33415060BACKGROUND
  • Skaper SD, Facci L, Giusti P. Glia and mast cells as targets for palmitoylethanolamide, an anti-inflammatory and neuroprotective lipid mediator. Mol Neurobiol. 2013 Oct;48(2):340-52. doi: 10.1007/s12035-013-8487-6. Epub 2013 Jun 28.

    PMID: 23813098BACKGROUND
  • Paniz-Mondolfi A, Bryce C, Grimes Z, Gordon RE, Reidy J, Lednicky J, Sordillo EM, Fowkes M. Central nervous system involvement by severe acute respiratory syndrome coronavirus-2 (SARS-CoV-2). J Med Virol. 2020 Jul;92(7):699-702. doi: 10.1002/jmv.25915.

    PMID: 32314810BACKGROUND
  • Guida F, Luongo L, Boccella S, Giordano ME, Romano R, Bellini G, Manzo I, Furiano A, Rizzo A, Imperatore R, Iannotti FA, D'Aniello E, Piscitelli F, Sca Rossi F, Cristino L, Di Marzo V, de Novellis V, Maione S. Palmitoylethanolamide induces microglia changes associated with increased migration and phagocytic activity: involvement of the CB2 receptor. Sci Rep. 2017 Mar 23;7(1):375. doi: 10.1038/s41598-017-00342-1.

    PMID: 28336953BACKGROUND
  • Tan D, Yu X, Chen M, Chen J, Xu J. Lutein protects against severe traumatic brain injury through anti-inflammation and antioxidative effects via ICAM-1/Nrf-2. Mol Med Rep. 2017 Oct;16(4):4235-4240. doi: 10.3892/mmr.2017.7040. Epub 2017 Jul 20.

    PMID: 28731190BACKGROUND
  • O'Byrne L, Webster KE, MacKeith S, Philpott C, Hopkins C, Burton MJ. Interventions for the treatment of persistent post-COVID-19 olfactory dysfunction. Cochrane Database Syst Rev. 2022 Sep 5;9(9):CD013876. doi: 10.1002/14651858.CD013876.pub3.

MeSH Terms

Conditions

AnosmiaCOVID-19Olfaction DisordersPatient Compliance

Interventions

co-ultraPEALut

Condition Hierarchy (Ancestors)

Sensation DisordersNeurologic ManifestationsNervous System DiseasesSigns and SymptomsPathological Conditions, Signs and SymptomsPneumonia, ViralPneumoniaRespiratory Tract InfectionsInfectionsVirus DiseasesCoronavirus InfectionsCoronaviridae InfectionsNidovirales InfectionsRNA Virus InfectionsLung DiseasesRespiratory Tract DiseasesPatient Acceptance of Health CareTreatment Adherence and ComplianceHealth BehaviorBehavior

Study Design

Study Type
interventional
Phase
phase 4
Allocation
RANDOMIZED
Masking
DOUBLE
Who Masked
INVESTIGATOR, OUTCOMES ASSESSOR
Masking Details
The investor will assign patients to one of the groups before Sniff test evaluation at T0
Purpose
TREATMENT
Intervention Model
PARALLEL
Model Details: Single-blinded randomized clinical trial
Sponsor Type
OTHER
Responsible Party
PRINCIPAL INVESTIGATOR
PI Title
Adjunct Professor

Study Record Dates

First Submitted

April 16, 2021

First Posted

April 21, 2021

Study Start

November 15, 2020

Primary Completion

October 28, 2021

Study Completion

August 31, 2022

Last Updated

November 16, 2022

Record last verified: 2022-11

Data Sharing

IPD Sharing
Will share

Shared, only anonymized data directly requested to PI

Shared Documents
STUDY PROTOCOL, SAP
Access Criteria
request to PI

Locations