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This is a randomized, double-blind, placebo-controlled clinical trial to evaluate the effect of two polypore mushrooms, Fomitopsis officinalis and Trametes versicolor (FoTv), for use as an adjunct to vaccination for COVID-19 in a general population at the time of COVID-19 vaccination.
This is a randomized, double-blind, placebo-controlled clinical trial to evaluate the effect of two polypore mushrooms, Fomitopsis officinalis and Trametes versicolor (FoTv), for use as an adjunct to vaccination for COVID-19 in a general population at the time of COVID-19 vaccination.
Fo and Tv have immunomodulatory properties which may increase antibody titers in response to vaccination more than vaccination alone. However, because they are also immunomodulatory - not purely immune-stimulating - they may have the added benefit of simultaneously decreasing vaccine-related side effects following COVID-19 vaccination.
The study aims to establish the safety and feasibility of the use of FoTv vs placebo; evaluate the effect on post-vaccination clinical symptoms and immune response in 45 total subjects.
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| Label | Type | Description | Intervention Names |
|---|---|---|---|
| Mushrooms | Experimental | Drug: FoTv The dosage of FoTv is 8 capsules three times a day for 4 consecutive days. It does not need to be consumed with food. It is best taken at least 30 minutes before OR at least 60 minutes after meals, in the morning, noon and evening. Accidentally missed doses will not need to be taken at a later time but will be recorded in a daily diary. Should swallowing capsules be an issue, they can be opened and dispensed into water or juice for easy ingestion. |
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| Placebo | Placebo Comparator | Placebo: organic brown rice The dosage of Placebo is 8 capsules three times a day for 4 consecutive days. It does not need to be consumed with food. It is best taken at least 30 minutes before OR at least 60 minutes after meals, in the morning, noon and evening. Accidentally missed doses will not need to be taken at a later time but will be recorded in a daily diary. Should swallowing capsules be an issue, they can be opened and dispensed into water or juice for easy ingestion. |
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| Name | Type | Description | Arm Group Labels | Other Names |
|---|---|---|---|---|
| FoTv | Dietary Supplement | Fomitopsis Officinalis and Trametes Versicolor |
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| Measure | Description | Time Frame |
|---|---|---|
| AST Normal to Abnormal Transition | The Normal to Abnormal percentage reflects the percentage of participants with normal values at Day 1 that transitioned to abnormal at Day 14 relative to all participants with normal values at baseline. | 14 days |
| ALT Normal to Abnormal Transition | The Normal to Abnormal percentage reflects the percentage of participants with normal values at Day 1 that became abnormal at Day 14 relative to all participants with normal values at baseline. | 14 days |
| ALP Normal to Abnormal Transition | The Normal to Abnormal percentage reflects the percentage of participants with normal values at Day 1 that became abnormal at Day 14 relative to all participants with normal values at baseline. | 14 days |
| eGFR Normal to Abnormal Transition | The Normal to Abnormal percentage reflects the percentage of participants with normal values at Day 1 that became abnormal at Day 14 relative to all participants with normal values at baseline. | 14 days |
| Measure | Description | Time Frame |
|---|---|---|
| SARS-CoV-2 Receptor Binding Domain (RBD) | higher scores indicate higher levels of RBD levels | Single-dose vaccine (J&J): days 1, 14, and 28, and 6-months post-vaccination; two-dose vaccine (Pfizer or Moderna): days 1, 14, and 42 (two weeks after second dose), and 6-months post-vaccination; and vaccine booster: days 1, 3, and 14, and 6-months. |
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Inclusion Criteria:
Exclusion Criteria:
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| Name | Affiliation | Role |
|---|---|---|
| Andrew Shubov, MD | University of California, Los Angeles | Principal Investigator |
| Facility | Status | City | State | ZIP | Country | Contacts |
|---|---|---|---|---|---|---|
| University of California, San Diego | San Diego | California | 92093 | United States |
| PubMed Identifier | Type | Citation | Retractions |
|---|---|---|---|
| 41620671 | Derived | Saxe G, Smith CN, Golshan S, Shekhtman T, Bair ZJ, Beathard C, Davis RA, MacElhern L, Shubov A, Slater D, Kao LK, Senowitz P, Wilson S. Polypore mushroom mycelia as an adjunct to COVID-19 vaccination: a randomized clinical trial. BMC Immunol. 2026 Jan 31;27(1):24. doi: 10.1186/s12865-026-00809-9. |
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| ID | Title | Description |
|---|---|---|
| FG000 | Mushrooms | Drug: FoTv The dosage of FoTv is 8 capsules three times a day for 4 consecutive days. It does not need to be consumed with food. It is best taken at least 30 minutes before OR at least 60 minutes after meals, in the morning, noon and evening. Accidentally missed doses will not need to be taken at a later time but will be recorded in a daily diary. Should swallowing capsules be an issue, they can be opened and dispensed into water or juice for easy ingestion. FoTv: Fomitopsis Officinalis and Trametes Versicolor |
| FG001 | Placebo | Placebo: organic brown rice The dosage of Placebo is 8 capsules three times a day for 4 consecutive days. It does not need to be consumed with food. It is best taken at least 30 minutes before OR at least 60 minutes after meals, in the morning, noon and evening. Accidentally missed doses will not need to be taken at a later time but will be recorded in a daily diary. Should swallowing capsules be an issue, they can be opened and dispensed into water or juice for easy ingestion. FoTv: Fomitopsis Officinalis and Trametes Versicolor |
| Title | Milestones | Reasons Not Completed | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Overall Study |
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| ID | Title | Description |
|---|---|---|
| BG000 | Mushrooms | Drug: FoTv The dosage of FoTv is 8 capsules three times a day for 4 consecutive days. It does not need to be consumed with food. It is best taken at least 30 minutes before OR at least 60 minutes after meals, in the morning, noon and evening. Accidentally missed doses will not need to be taken at a later time but will be recorded in a daily diary. Should swallowing capsules be an issue, they can be opened and dispensed into water or juice for easy ingestion. FoTv: Fomitopsis Officinalis and Trametes Versicolor |
| Units | Counts |
|---|---|
| Participants |
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| Title | Description | Population Description | Parameter Type | Dispersion Type | Unit of Measure | Calculate Percentage | Denominator Units Selected | Denominators | Classes |
|---|---|---|---|---|---|---|---|---|---|
| Age, Continuous | Mean |
| Type | Title | Description | Population Description | Reporting Status | Anticipated Posting Date | Parameter Type | Dispersion Type | Unit of Measure | Calculate Percentage | Time Frame | Units Analyzed | Denominator Units Selected | Arm/Group Information | Denominators | Classes | Analyses | |||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Primary | AST Normal to Abnormal Transition | The Normal to Abnormal percentage reflects the percentage of participants with normal values at Day 1 that transitioned to abnormal at Day 14 relative to all participants with normal values at baseline. | Number of participants who were normal at baseline. Participants who were abnormal at baseline were excluded, therefore the number of participants in this analysis is different from the total number of participants in the Mushrooms or Placebo groups described in the study arms/groups. | Posted | Number | % of participants who transitioned | 14 days |
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14 days
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| ID | Title | Description | Deaths (Affected) | Deaths (At Risk) | Serious Events (Affected) | Serious Events (At Risk) | Other Events (Affected) | Other Events (At Risk) |
|---|---|---|---|---|---|---|---|---|
| EG000 | Mushrooms | Drug: FoTv The dosage of FoTv is 8 capsules three times a day for 4 consecutive days. It does not need to be consumed with food. It is best taken at least 30 minutes before OR at least 60 minutes after meals, in the morning, noon and evening. Accidentally missed doses will not need to be taken at a later time but will be recorded in a daily diary. Should swallowing capsules be an issue, they can be opened and dispensed into water or juice for easy ingestion. FoTv: Fomitopsis Officinalis and Trametes Versicolor |
| Term | Organ System | Source Vocabulary | Assessment Type | Notes | Statistical Information |
|---|---|---|---|---|---|
| ER visit | Respiratory, thoracic and mediastinal disorders | Non-systematic Assessment | ER visit |
| Term | Organ System | Source Vocabulary | Assessment Type | Notes | Statistical Information |
|---|---|---|---|---|---|
| ALP Normal to Abnormal Transition | Hepatobiliary disorders | Systematic Assessment | Transitioning from normal function at baseline to abnormal function at 14 days. ALP, alkaline phosphatase. Participants who were abnormal at baseline were excluded. |
Because of the rapidly changing nature of the COVID-19 pandemic, we didn't have sufficient time to ascertain, and stratify randomization based on, exposure status. Earlier launch might also have resulted in a larger proportion of Unexposed participants in the total sample.
A 4-day treatment regimen was selected. Alternate dosing regimens at time of and immediately post-vaccination might have yielded different effects on Ab and other outcomes.
we didn't examine Ab levels beyond 6-months.
| Title | Organization | Phone | Extension | |
|---|---|---|---|---|
| Gordon Saxe, M.D./Ph.D. | Krupp Center for Integrative Research, University of California San Diego | 6195435765 | gsaxe@health.ucsd.edu |
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| Type | Includes Protocol | Includes SAP | Includes ICF | Document Label | Document Date | Document Uploaded Date | Document File Name |
|---|---|---|---|---|---|---|---|
| Prot_SAP | Yes | Yes | No | Study Protocol and Statistical Analysis Plan | Oct 13, 2021 | Aug 15, 2025 | Prot_SAP_000.pdf |
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Mix model involving two groups and multiple measurements across study time-points
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| SARS-CoV-2 Spike Protein ("Spike"). | higher scores indicate higher levels of Spike levels | Single-dose vaccine (J&J): days 1, 14, and 28, and 6-months post-vaccination; two-dose vaccine (Pfizer or Moderna): days 1, 14, and 42 (two weeks after second dose), and 6-months post-vaccination; and vaccine booster: days 1, 3, and 14, and 6-months. |
| Side-Effect Number | count of the number of CDC side effects associated with vaccine. higher scores indicate higher number of endorsed side effects. Count of: feeling feverish, low fever in the afternoon, alternating fever and chills, chills, fatigue, muscle aches, nausea, headaches, redness/swelling at injection site, and pain at injection site. The range was from zero to 10. | Days, 1, 2, 3, 4, 5 |
| Side-Effect Severity | Sum of the side effect severities for the CDC side effects associated with vaccine. higher scores indicate higher severity. The side effects included: feeling feverish, low fever in the afternoon, alternating fever and chills, chills, fatigue, muscle aches, nausea, headaches, redness/swelling at injection site, and pain at injection site. The scale for each side effect ranged from zero to 4. The total possible scale was zero to 40. | Days, 1, 2, 3, 4, 5 |
| BG001 | Placebo | Placebo: organic brown rice The dosage of Placebo is 8 capsules three times a day for 4 consecutive days. It does not need to be consumed with food. It is best taken at least 30 minutes before OR at least 60 minutes after meals, in the morning, noon and evening. Accidentally missed doses will not need to be taken at a later time but will be recorded in a daily diary. Should swallowing capsules be an issue, they can be opened and dispensed into water or juice for easy ingestion. FoTv: Fomitopsis Officinalis and Trametes Versicolor |
| BG002 | Total | Total of all reporting groups |
| years |
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| Sex: Female, Male | Count of Participants | Participants |
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| Race (NIH/OMB) | Count of Participants | Participants |
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| Region of Enrollment | Number | participants |
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| Aspartate Aminotransferase (AST) Normal | Normal: ≤ 40 U/L; Abnormal: > 40 U/L | Number | participants |
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| Alanine Transaminase (ALT) Normal | Normal: ≤ 41 U/L; Abnormal: > 40 U/L | Count of Participants | Participants |
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| Alkaline Phosphatase (ALP) Normal | Normal: ≤ 129 U/L; Abnormal: > 129 U/L | Count of Participants | Participants |
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| Adjusted glomerular filtration rate (Adj. eGFR) Normal | Normal: > 60 mL/min; Abnormal: <= 60 mL/min | Count of Participants | Participants |
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| OG001 | Placebo | Placebo: organic brown rice The dosage of Placebo is 8 capsules three times a day for 4 consecutive days. It does not need to be consumed with food. It is best taken at least 30 minutes before OR at least 60 minutes after meals, in the morning, noon and evening. Accidentally missed doses will not need to be taken at a later time but will be recorded in a daily diary. Should swallowing capsules be an issue, they can be opened and dispensed into water or juice for easy ingestion. FoTv: Fomitopsis Officinalis and Trametes Versicolor |
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| Primary | ALT Normal to Abnormal Transition | The Normal to Abnormal percentage reflects the percentage of participants with normal values at Day 1 that became abnormal at Day 14 relative to all participants with normal values at baseline. | Number of participants who were normal at baseline. Participants who were abnormal at baseline were excluded. | Posted | Number | % of participants who transitioned | 14 days |
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| Primary | ALP Normal to Abnormal Transition | The Normal to Abnormal percentage reflects the percentage of participants with normal values at Day 1 that became abnormal at Day 14 relative to all participants with normal values at baseline. | Number of participants who were normal at baseline. Participants who were abnormal at baseline were excluded, therefore the number of participants in this analysis is different from the total number of participants in the Mushrooms or Placebo groups described in the study arms/groups. | Posted | Number | % of participants who transitioned | 14 days |
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| Primary | eGFR Normal to Abnormal Transition | The Normal to Abnormal percentage reflects the percentage of participants with normal values at Day 1 that became abnormal at Day 14 relative to all participants with normal values at baseline. | Number of participants who were normal at baseline. Participants who were abnormal at baseline were excluded, therefore the number of participants in this analysis is different from the total number of participants in the Mushrooms or Placebo groups described in the study arms/groups. | Posted | Number | % of participants who transitioned | 14 days |
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| Secondary | SARS-CoV-2 Receptor Binding Domain (RBD) | higher scores indicate higher levels of RBD levels | Five participants (3 in the Active group and 2 in the Placebo group) had 1 or more antibody test results that were considered outliers, and these participants were excluded from further antibody and side-effect analyses. | Posted | Mean | Standard Deviation | binding antibody units/mL | Single-dose vaccine (J&J): days 1, 14, and 28, and 6-months post-vaccination; two-dose vaccine (Pfizer or Moderna): days 1, 14, and 42 (two weeks after second dose), and 6-months post-vaccination; and vaccine booster: days 1, 3, and 14, and 6-months. |
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| Secondary | SARS-CoV-2 Spike Protein ("Spike"). | higher scores indicate higher levels of Spike levels | Five participants (3 in the Active group and 2 in the Placebo group) had 1 or more antibody test results that were considered outliers, and these participants were excluded from further antibody and side-effect analyses. | Posted | Mean | Standard Deviation | binding antibody units/mL | Single-dose vaccine (J&J): days 1, 14, and 28, and 6-months post-vaccination; two-dose vaccine (Pfizer or Moderna): days 1, 14, and 42 (two weeks after second dose), and 6-months post-vaccination; and vaccine booster: days 1, 3, and 14, and 6-months. |
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| Secondary | Side-Effect Number | count of the number of CDC side effects associated with vaccine. higher scores indicate higher number of endorsed side effects. Count of: feeling feverish, low fever in the afternoon, alternating fever and chills, chills, fatigue, muscle aches, nausea, headaches, redness/swelling at injection site, and pain at injection site. The range was from zero to 10. | Five participants (3 in the Active group and 2 in the Placebo group) had 1 or more antibody test results that were considered outliers, and these participants were excluded from further antibody and side-effect analyses. | Posted | Mean | Standard Deviation | units on a scale | Days, 1, 2, 3, 4, 5 |
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| Secondary | Side-Effect Severity | Sum of the side effect severities for the CDC side effects associated with vaccine. higher scores indicate higher severity. The side effects included: feeling feverish, low fever in the afternoon, alternating fever and chills, chills, fatigue, muscle aches, nausea, headaches, redness/swelling at injection site, and pain at injection site. The scale for each side effect ranged from zero to 4. The total possible scale was zero to 40. | Five participants (3 in the Active group and 2 in the Placebo group) had 1 or more antibody test results that were considered outliers, and these participants were excluded from further antibody and side-effect analyses. | Posted | Mean | Standard Deviation | units on a scale | Days, 1, 2, 3, 4, 5 |
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| 0 |
| 52 |
| 0 |
| 52 |
| 8 |
| 52 |
| EG001 | Placebo | Placebo: organic brown rice The dosage of Placebo is 8 capsules three times a day for 4 consecutive days. It does not need to be consumed with food. It is best taken at least 30 minutes before OR at least 60 minutes after meals, in the morning, noon and evening. Accidentally missed doses will not need to be taken at a later time but will be recorded in a daily diary. Should swallowing capsules be an issue, they can be opened and dispensed into water or juice for easy ingestion. FoTv: Fomitopsis Officinalis and Trametes Versicolor | 0 | 38 | 0 | 38 | 4 | 38 |
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| hospitalization | Reproductive system and breast disorders | Non-systematic Assessment | hospitalization |
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| Urgent Care Visit | Respiratory, thoracic and mediastinal disorders | Non-systematic Assessment | urgent care visit |
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| AST Normal to Abnormal Transition | Hepatobiliary disorders | Systematic Assessment | Transitioning from normal function at baseline to abnormal function at 14 days. AST, aspartate aminotransferase. Participants who were abnormal at baseline were excluded. |
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| ALT Normal to Abnormal Transition | Hepatobiliary disorders | Systematic Assessment | Transitioning from normal function at baseline to abnormal function at 14 days. ALT, alanine transaminase. Participants who were abnormal at baseline were excluded. |
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| eGFR Normal to Abnormal Transition | Renal and urinary disorders | Systematic Assessment | Transitioning from normal function at baseline to abnormal function at 14 days. eGFR, estimated glomerular filtration rate, based on 2021 criteria. Participants who were abnormal at baseline were excluded. |
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