This phase II trial tests whether Artemisia annua decaffeinated coffee can lower prostate specific antigen (PSA) level in men with biochemical recurrence of prostate cancer who have had localized therapy (prostatectomy or radiotherapy). Artemisia annua is an herb traditionally used to treat fever, inflammation, and malaria and has shown anti-tumor activity in multiple cancers including prostate cancer.
Study sponsor and potential other locations can be found on ClinicalTrials.gov for NCT05478239.
PRIMARY OBJECTIVE:
I. To determine the proportion of patients with biochemically recurrent prostate cancer who achieve >= 50% decline PSA levels within 24 weeks of Artemisia annua (Aa) decaffeinated (decaf) coffee treatment.
SECONDARY OBJECTIVES:
I. To assess the safety and tolerability of Aa decaf coffee.
II. To evaluate the change in PSA velocity and slope from pre-treatment to post-treatment.
III. To measure the percentage change in serial PSA and testosterone levels from baseline throughout the treatment period.
EXPLORATORY OBJECTIVES:
I. To determine the ability of Aa decaf coffee to influence downstream biomarkers of the NRF2 & KEAP1 signaling pathway (level in peripheral blood monocytes as a biomarker).
II. To assess the plasma concentration of artemisinin and dihydroartemisinin. (NOTE: Amendment 1 discontinued pharmacokinetic [PK] plasma sampling)
OUTLINE:
Patients receive Artemisia annua decaf coffee orally (PO) three times daily (TID) on days 1-30 of each cycle. Cycles repeat every 30 days for up to 6 cycles in the absence of disease progression or unacceptable toxicity. Patients may also undergo prostate-specific membrane antigen (PSMA) positron emission tomography (PET), PET/computed tomography (CT), bone scan, and/or CT as clinically indicated and blood sample collection throughout the study.
Lead OrganizationUniversity of Kentucky/Markey Cancer Center
Principal InvestigatorZin War Myint