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Reishi Mushroom Extract for Fatigue and/or Arthralgias/Myalgias in Patients With Breast Cancer on Aromatase Inhibitors

Reishi Mushroom Extract for Fatigue and/or Arthralgias in Patients With Breast Cancer on Aromatase Inhibitors: A Randomized Phase II MNCCTN Trial

Status
Recruiting
Phases
Phase 2
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT06028022
Enrollment
80
Registered
2023-09-07
Start date
2023-10-18
Completion date
2027-09-15
Last updated
2026-06-16

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Estrogen Receptor-Positive Breast Carcinoma

Brief summary

This phase II trial tests how well Reishi mushroom extract works in treating fatigue and/or joint/muscle pain (arthralgias/myalgias) in patients with breast cancer on aromatase inhibitors. Fatigue and arthralgias/myalgias are common symptoms in breast cancer patients taking aromatase inhibitors (AI). Given the long duration of AI treatment for some women (up to 10 years), these symptoms can significantly impact quality of life and premature discontinuation of AIs, a beneficial medication. Reishi mushrooms are among several medicinal mushrooms that have been used for hundreds of years, mainly in Asian countries, to help enhance the immune system, reduce stress, improve sleep, and lessen fatigue. Reishi mushroom extracts have not been studied explicitly for treatment-induced arthralgias/myalgias, but have been shown to improve quality of life, muscular strength, pain, and flexibility. Information from this study may help researchers determine the effect of Reishi mushroom extract on fatigue and arthralgias/myalgias in breast cancer patients receiving an AI.

Detailed description

PRIMARY OBJECTIVE: I. To evaluate the efficacy of 1,000 mg three times daily (TID) of Reishi mushroom extracts as therapy for cancer-related fatigue measured by uniscale measurement at the end of four weeks. SECONDARY OBJECTIVES: I. To evaluate the efficacy of Reishi mushroom extracts as therapy for cancer-related arthralgias at the end of four weeks and four weeks after cross-over as measured by the Brief Pain index (BPI)-adapted for AI associated arthralgias. II. To evaluate the effect of Reishi mushroom extracts on cancer-related quality of life (QOL), as measured by uniscale, at the end of four weeks and four weeks after cross-over. III. To evaluate the efficacy of Reishi mushroom extracts on mood, as assessed by the World Health Organization Five Well-Being Index (WHO-5) item well-being scale, at the end of four weeks and four weeks after cross-over. IV. To evaluate treatment toxicity between the two treatment arms, as measured by a patient symptom experience diary and weekly calls from the study team. V. To evaluate the interest, knowledge, and acceptance of integrative treatments for cancer-related symptoms. OUTLINE: Patients are randomized to 1 of 2 arms. ARM I: Patients receive Reishi mushroom extract orally (PO) TID on days 1-28 for weeks 1-4 and then placebo PO TID on days 1-28 for weeks 5-8 in the absence of disease progression or unacceptable toxicity. ARM II: Patients receive placebo PO TID on days 1-28 for weeks 1-4 and Reishi mushroom extract PO TID on days 1-28 for weeks 5-8 in the absence of disease progression or unacceptable toxicity. After completion of study treatment, patients are followed up at 30 days.

Interventions

DIETARY_SUPPLEMENTMushroom Extract

Given Reishi mushroom extract PO

DRUGPlacebo Administration

Given PO

OTHERQuality-of-Life Assessment

Ancillary studies

OTHERQuestionnaire Administration

Ancillary studies

Sponsors

Mayo Clinic
Lead SponsorOTHER

Study design

Allocation
RANDOMIZED
Intervention model
CROSSOVER
Primary purpose
SUPPORTIVE_CARE
Masking
DOUBLE (Subject, Investigator)

Eligibility

Sex/Gender
FEMALE
Age
18 Years to No maximum
Healthy volunteers
No

Inclusion criteria

* Age ≥ 18 years * History of breast cancer, estrogen receptor positive (ER+), Her 2 positive or negative * Fatigue ≥ 4/10 * Currently post-menopausal (as defined by National Comprehensive Cancer Network (version 4.2024), taking any aromatase inhibitor in the curative setting and planning to be on such for at least 8 weeks after registration. \[Patients on concurrent ovarian suppression (such as with leuprolide acetate, goserelin) are allowed\]; CDK 4/6 inhibitors abemaciclib, ribociclib ARE allowed * Prior treatment: last chemotherapy ≥ 90 days prior to randomization (if treated with chemotherapy) * On a stable dose of pain medications if pain medications are being regularly used. (i.e., no change in dosage in the past 30 days) * If on supplements, must be on stable dose with no plan to change; not on or planning any acupuncture or other specific supportive modalities for fatigue or AI arthralgias * Eastern Cooperative Oncology Group (ECOG) performance status (PS) 0, 1 or 2 * White blood cell count (WBC) ≥ 3,000/mm\^3 (obtained ≤ 30 days prior to randomization) * Hemoglobin ≥ 10 g/dL (obtained ≤ 30 days prior to randomization) * Platelet count ≥ 100,000/mm\^3 (obtained ≤ 30 days prior to randomization) * Total bilirubin ≤ 1.5 x upper limit of normal (ULN) (obtained ≤ 30 days prior to randomization) * Alanine aminotransferase (ALT) or aspartate transaminase (AST) ≤ 1.2 x ULN (obtained ≤ 30 days prior to randomization) * Prothrombin time (PT)/activated partial thromboplastin time (aPTT) ≤ 1.5 x ULN (obtained ≤ 30 days prior to randomization) * Negative pregnancy test done ≤ 7 days prior to registration, for persons on concurrent ovarian suppression only * Provide informed consent * Ability to complete questionnaires * Willing to return to enrolling institution during the active monitoring phase of the study * Patients who have had a recent surgery or procedure should be healed and cleared by their clinician and/or surgeon per local standards, prior to registration

Exclusion criteria

* Other known uncontrolled medical conditions causing fatigue such as untreated thyroid disease, depression, fibromyalgia, chronic fatigue syndrome, infection, autoimmune disease, or active/untreated hepatitis * Allergy to mushrooms * On anticoagulation medication or aspirin or having a known bleeding disorder * On any specific medication for fatigue (e.g., methylphenidate) * Metastatic cancer diagnosis (history of nodal metastases is allowed) * Chronic steroid use, unless on physiologic replacement doses * Current use of any medical mushrooms * On medications for diabetes * History of symptomatic hypotension * Taking CYP3A4, CYP2D6 sensitive substrates which can be located at the following link: https://www.fda.gov/drugs/drug-interactions-labeling/healthcare-professionals-fdas-examples-drugs-interact-cyp-enzymes-and-transporter-systems * Drugs which exhibit either \>20% inhibition or \>20% induction of CYP2E1 in vivo, such as: Acetaminophen, Dapsone, Enflurane, Halothane, Isoflurane, \& Theophylline * Taking olaparib * Any of the following because this study involves an agent that has unknown genotoxic, mutagenic and teratogenic effects: * Pregnant persons * Nursing persons * Persons on concurrent ovarian suppression who are unwilling to employ adequate contraception (e.g., hormonal methods, barrier methods, intrauterine device, abstinence) * Planned surgery or procedure during time on study and ≤ 14 days after last dose, due to bleeding risks

Design outcomes

Primary

MeasureTime frameDescription
Change in fatigue scoresBaseline to end of four weeksBased on a single item fatigue uniscale question. Will be compared between arms using a two-sided two-sample t-test assuming equal variances in each group.

Secondary

MeasureTime frameDescription
Change in quality of lifeBaseline to the end of four weeks and four weeks after cross-overMeasured by the World Health Organization-Five Well-Being Index. Will be compared between arms using two-sample, two-sided t-tests assuming equal variances and alpha levels of 5%. The analyses of the crossover portion of the study will be descriptive. Mean values will be plotted over time by arm. A formal crossover analysis will also be performed using Senn's linear modeling approach.
Change in arthralgiasBaseline to the end of four weeks and four weeks after cross-overMeasured by the Brief Pain Inventory for Aromatase Inhibitor Induced Arthralgia. Will be compared between arms using two-sample, two-sided t-tests assuming equal variances and alpha levels of 5%. The analyses of the crossover portion of the study will be descriptive. Mean values will be plotted over time by arm. A formal crossover analysis will also be performed using Senn's linear modeling approach.
Incidence of adverse eventsUp to 30 days follow-upMeasured by the symptom experience diary. Will be compared between arms using two-sample, two-sided t-tests assuming equal variances and alpha levels of 5%. The analyses of the crossover portion of the study will be descriptive. Mean values will be plotted over time by arm. A formal crossover analysis will also be performed using Senn's linear modeling approach.

Countries

United States

Contacts

CONTACTClinical Trials Referral Office
mayocliniccancerstudies@mayo.edu855-776-0015
PRINCIPAL_INVESTIGATORStacy D. D'Andre, MD

Mayo Clinic in Rochester

Outcome results

None listed

Source: ClinicalTrials.gov · Data processed: Jun 17, 2026