Phase 2 Study of Aromatase inhibitor-associated musculoskeletal symptom Prevention with Resistant Potato Starch (AIMSS-RPS)
Eligibility: Inclusion Criteria
• * Patient who is planning to start standard-of-care AI therapy and receive treatment for at least 24 weeks. Can be planning to take AI therapy for stage 0-3 breast cancer or because they are at high risk of developing breast cancer. Concurrent gonadotropin-releasing hormone antagonist (GnRHa) therapy, anti-osteoclast therapy, anti-HER2 therapy, ribociclib, and/or PARP inhibitor are permitted
• * Average joint pain 0-6 on a 0-10 scale during the 7 days prior to study enrollment
• * Able to take oral medication
• * Able to read and understand English
• * Aware of the nature of her diagnosis, understands study requirement, and able to sign an informed consent form
Exclusion Criteria
• * Distant metastatic breast cancer
• * Current or planned use of abemaciclib during study participation
• * Current or planned use of chemotherapy or immunotherapy during study participation
• * Pregnant or breast feeding, or planning to become pregnant during study participation
• * Known active inflammatory bowel disease
• * History of colectomy and/or gastric bypass
• * Prior AI therapy except in the context of fertility treatment
• * Planned use of prebiotics during study participation
• * Use of estrogen supplementation other than vaginal estrogen
• * Receipt of another investigational agent concurrent with participation in this trial