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Smell in COVID-19 and Efficacy of Nasal Theophylline (SCENT 3)

Primary Purpose

COVID-19

Status
Recruiting
Phase
Phase 2
Locations
United States
Study Type
Interventional
Intervention
theophylline
Placebo
Sponsored by
Washington University School of Medicine
About
Eligibility
Locations
Arms
Outcomes
Full info

About this trial

This is an interventional treatment trial for COVID-19 focused on measuring Nasal Theophylline, Olfactory disfunction, Anosmia, Gustatory disorders, Dysgeusia

Eligibility Criteria

18 Years - 75 Years (Adult, Older Adult)All SexesDoes not accept healthy volunteers

Inclusion Criteria: Participants will be recruited based on the following inclusion criteria: males and females ages 18 to 75 years located within or willing to travel to the state of Missouri or Illinois Olfactory dysfunction that has persisted for >3 months following suspected COVID-19 infection Baseline University of Pennsylvania Smell Identification Test (UPSIT) consistent with decreased olfactory function (<= 34 in women, <=33 in men). This test is a clinically validated 40-question forced-choice odor identification test where microencapsulated odorants on a strip are released by scratching.70 This will determine that patients have both subjectively and objectively diagnosed OD prior to undergoing treatment. Ability to read, write, and understand English and have access to email. Exclusion Criteria: Individuals will not be allowed to participate in this study if they meet one or more of the following exclusion criteria: History of olfactory dysfunction prior to COVID-19 infection Any use of concomitant therapies specifically for the treatment of olfactory dysfunction Use of or participation in previous trials of intranasal theophylline. Known existence of nasal polyps, prior sinonasal, or anterior skull-based surgery Dependence on theophylline for comorbid conditions such as asthma and chronic obstructive pulmonary disease (COPD) History of an allergic reaction to theophylline or other methylxanthines History of neurodegenerative disease (ie. Alzheimer's dementia, Parkinson's disease, Lewy body dementia, frontotemporal dementia) Pregnant or breastfeeding mothers. Current use of medications with significant (≥40%) interactions with theophylline, which include cimetidine, ciprofloxacin, disulfiram, enoxacin, fluvoxamine, interferon- alpha, lithium, mexiletine, phenytoin, propafenone, propranolol, tacrine, thiabendazole, ticlopidine, and troleandomycin.

Sites / Locations

  • Washington University School of MedicineRecruiting

Arms of the Study

Arm 1

Arm 2

Arm Type

Experimental

Placebo Comparator

Arm Label

Theophylline

Placebo

Arm Description

Participants will dissolve the contents of the 400 mg theophylline capsules (experimental) into the sinus rinse bottle containing nasal saline.

Participant will dissolve the contents of the identical-appearing lactose capsules (control) into the sinus rinse bottle containing nasal saline.

Outcomes

Primary Outcome Measures

Clinical Global Impression Scale (CGI)
The CGI is a 3-item observer-rated scale that measures illness severity (CGIS), global improvement or change (CGIC). The CGI is rated on a 7-point scale, with the severity of illness scale using a range of responses from 1 (normal) through to 7 (amongst the most severely ill patients). CGI scores range from 1 (very much improved) through to 7 (very much worse). We will measure the response rate defined as the number of participants self-reporting minimal change or larger in the Clinical Global Impression Scale (CGI) scale, divided by the number of participants in each group.

Secondary Outcome Measures

Olfactory Dysfunction Outcomes Rating (ODOR)
ODOR is a disease-specific questionnaire that assesses for physical, functional, and emotional limitations in participants with olfactory dysfunction of any etiology. The instrument contains 28 total items with each scored on a 5-point Likert scale from 0 to 4.
Assessment of adherence
Number of irrigations completed over the prior 7 days out of a possible 14.
Assessment of blind
Participants will be asked to guess whether they are in the theophylline or placebo arm of the study.
Adverse effects
Patients will be asked to report any adverse effects they experience.

Full Information

First Posted
July 13, 2023
Last Updated
July 13, 2023
Sponsor
Washington University School of Medicine
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1. Study Identification

Unique Protocol Identification Number
NCT05947643
Brief Title
Smell in COVID-19 and Efficacy of Nasal Theophylline (SCENT 3)
Official Title
Smell in COVID-19 and Efficacy of Nasal Theophylline 3
Study Type
Interventional

2. Study Status

Record Verification Date
July 2023
Overall Recruitment Status
Recruiting
Study Start Date
November 22, 2022 (Actual)
Primary Completion Date
June 2024 (Anticipated)
Study Completion Date
June 2024 (Anticipated)

3. Sponsor/Collaborators

Responsible Party, by Official Title
Sponsor
Name of the Sponsor
Washington University School of Medicine

4. Oversight

Studies a U.S. FDA-regulated Drug Product
Yes
Studies a U.S. FDA-regulated Device Product
No
Product Manufactured in and Exported from the U.S.
No
Data Monitoring Committee
Yes

5. Study Description

Brief Summary
The purpose of this Phase II trial is to test the effectiveness of intranasal theophylline irrigations for the treatment of COVID-19 related smell dysfunction. The investigators will compare the effect of theophylline nasal rinses versus placebo nasal rinses on smell symptoms. Participants will be asked to rinse their nose with a medication or placebo capsule dissolved in saltwater twice daily for 12 weeks and fill out surveys about smell before, during, and at the end of treatment. This study will also be used to describe adverse effects related to intranasal theophylline irrigation.
Detailed Description
COVID-related olfactory dysfunction (OD) is a major symptom of infection with SARS-COV-2, affecting up to 80% of those with COVID-19. While research on the pathogenesis is ongoing, a significant subset is expected to suffer from long-term OD. The investigators seek to test intranasal theophylline nasal irrigation as a potential therapeutic option for treatment of COVID-related OD lasting over 3 months. Theophylline has been shown to improve outcomes in post-viral OD in pilot studies, and initial data suggests therapeutic benefit in patients with post-COVID OD with minimal systemic absorption. The primary hypothesis is that theophylline irrigation will be more effective than placebo saline irrigation for COVID-19 related OD symptoms. The use of intranasal theophylline will have minimal adverse effects.

6. Conditions and Keywords

Primary Disease or Condition Being Studied in the Trial, or the Focus of the Study
COVID-19
Keywords
Nasal Theophylline, Olfactory disfunction, Anosmia, Gustatory disorders, Dysgeusia

7. Study Design

Primary Purpose
Treatment
Study Phase
Phase 2
Interventional Study Model
Single Group Assignment
Model Description
Single-site, double-blinded, placebo-controlled randomized clinical trial performed at a tertiary academic medical center.
Masking
ParticipantInvestigator
Masking Description
Double-blinded, meaning neither the subjects nor the investigators will be aware of the intervention received by any subject.
Allocation
Randomized
Enrollment
240 (Anticipated)

8. Arms, Groups, and Interventions

Arm Title
Theophylline
Arm Type
Experimental
Arm Description
Participants will dissolve the contents of the 400 mg theophylline capsules (experimental) into the sinus rinse bottle containing nasal saline.
Arm Title
Placebo
Arm Type
Placebo Comparator
Arm Description
Participant will dissolve the contents of the identical-appearing lactose capsules (control) into the sinus rinse bottle containing nasal saline.
Intervention Type
Drug
Intervention Name(s)
theophylline
Intervention Description
capsules dissolved in intranasal irrigation
Intervention Type
Drug
Intervention Name(s)
Placebo
Other Intervention Name(s)
inactive medicine
Intervention Description
identical-appearing lactose capsules dissolved in intranasal irrigation
Primary Outcome Measure Information:
Title
Clinical Global Impression Scale (CGI)
Description
The CGI is a 3-item observer-rated scale that measures illness severity (CGIS), global improvement or change (CGIC). The CGI is rated on a 7-point scale, with the severity of illness scale using a range of responses from 1 (normal) through to 7 (amongst the most severely ill patients). CGI scores range from 1 (very much improved) through to 7 (very much worse). We will measure the response rate defined as the number of participants self-reporting minimal change or larger in the Clinical Global Impression Scale (CGI) scale, divided by the number of participants in each group.
Time Frame
Week 6 and week 12 of treatment
Secondary Outcome Measure Information:
Title
Olfactory Dysfunction Outcomes Rating (ODOR)
Description
ODOR is a disease-specific questionnaire that assesses for physical, functional, and emotional limitations in participants with olfactory dysfunction of any etiology. The instrument contains 28 total items with each scored on a 5-point Likert scale from 0 to 4.
Time Frame
Week 6 and week 12 of treatment
Title
Assessment of adherence
Description
Number of irrigations completed over the prior 7 days out of a possible 14.
Time Frame
Week 1-2 of treatment
Title
Assessment of blind
Description
Participants will be asked to guess whether they are in the theophylline or placebo arm of the study.
Time Frame
Week 1-2 of treatment
Title
Adverse effects
Description
Patients will be asked to report any adverse effects they experience.
Time Frame
Patients may report this information any time during 12 weeks of treatment. They are asked about this at weeks 3, 6, 9, and 12 of treatment.

10. Eligibility

Sex
All
Minimum Age & Unit of Time
18 Years
Maximum Age & Unit of Time
75 Years
Accepts Healthy Volunteers
No
Eligibility Criteria
Inclusion Criteria: Participants will be recruited based on the following inclusion criteria: males and females ages 18 to 75 years located within or willing to travel to the state of Missouri or Illinois Olfactory dysfunction that has persisted for >3 months following suspected COVID-19 infection Baseline University of Pennsylvania Smell Identification Test (UPSIT) consistent with decreased olfactory function (<= 34 in women, <=33 in men). This test is a clinically validated 40-question forced-choice odor identification test where microencapsulated odorants on a strip are released by scratching.70 This will determine that patients have both subjectively and objectively diagnosed OD prior to undergoing treatment. Ability to read, write, and understand English and have access to email. Exclusion Criteria: Individuals will not be allowed to participate in this study if they meet one or more of the following exclusion criteria: History of olfactory dysfunction prior to COVID-19 infection Any use of concomitant therapies specifically for the treatment of olfactory dysfunction Use of or participation in previous trials of intranasal theophylline. Known existence of nasal polyps, prior sinonasal, or anterior skull-based surgery Dependence on theophylline for comorbid conditions such as asthma and chronic obstructive pulmonary disease (COPD) History of an allergic reaction to theophylline or other methylxanthines History of neurodegenerative disease (ie. Alzheimer's dementia, Parkinson's disease, Lewy body dementia, frontotemporal dementia) Pregnant or breastfeeding mothers. Current use of medications with significant (≥40%) interactions with theophylline, which include cimetidine, ciprofloxacin, disulfiram, enoxacin, fluvoxamine, interferon- alpha, lithium, mexiletine, phenytoin, propafenone, propranolol, tacrine, thiabendazole, ticlopidine, and troleandomycin.
Central Contact Person:
First Name & Middle Initial & Last Name or Official Title & Degree
Jay F Piccirillo, MD
Phone
314-362-8641
Email
piccirj@wustl.edu
First Name & Middle Initial & Last Name or Official Title & Degree
Sara Kukuljan
Phone
314-362-7563
Email
kukuljas@wustl.edu
Overall Study Officials:
First Name & Middle Initial & Last Name & Degree
Jay F Piccirillo, MD
Organizational Affiliation
Washington University School of Medicine
Official's Role
Principal Investigator
Facility Information:
Facility Name
Washington University School of Medicine
City
Saint Louis
State/Province
Missouri
ZIP/Postal Code
63110
Country
United States
Individual Site Status
Recruiting
Facility Contact:
First Name & Middle Initial & Last Name & Degree
Theresa Tharakan, MD
Email
otooutcomes@wustl.edu

12. IPD Sharing Statement

Plan to Share IPD
No
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Links:
URL
https://ClinicalTrials.gov/show/NCT04374474.
Description
Anosmia Rehabilitation in Patients Post Coronavirus Disease (COVID 19).
URL
https://ClinicalTrials.gov/show/NCT04495816.
Description
COVID-19 Anosmia Study.
URL
https://ClinicalTrials.gov/show/NCT04484493.
Description
Corticosteroid Nasal Spray in COVID-19 Anosmia.

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Smell in COVID-19 and Efficacy of Nasal Theophylline (SCENT 3)

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