This study is a double-blind, randomized, multisite, placebo-controlled trial comparing the safety and efficacy of TQ versus placebo in patients hospitalized for babesiosis with low risk for relapsing disease who will also be administered a standard-of-care antimicrobial regimen (A/A) that is recommended in the 2020 IDSA guideline on the diagnosis and management of babesiosis.
This study is a double-blind, randomized, multisite, placebo-controlled trial comparing the safety and efficacy of TQ versus placebo in patients hospitalized for babesiosis with low risk for relapsing disease who will also be administered a standard-of-care antimicrobial regimen (A/A) that is recommended in the 2020 IDSA guideline on the diagnosis and management of babesiosis. Patients hospitalized for a diagnosis of babesiosis, who have received A/A for \<48 hours (h) prior to randomization or are about to receive A/A, will be asked to provide written informed consent and will undergo eligibility screening including medical history, physical examination, prior and concomitant medications, blood chemistry and hematology, glucose-6-phosphate dehydrogenase (G6PD) deficiency testing, blood smear for diagnostic confirmation of babesiosis, pregnancy testing for females of child-bearing potential, and assessment of risk factors for relapsing babesiosis. The screening period will last a maximum of two days. The first day of dosing with TQ or placebo will be Day 1 and will be done while the patient is still hospitalized.
Study Type
INTERVENTIONAL
Allocation
RANDOMIZED
Purpose
TREATMENT
Masking
QUADRUPLE
Enrollment
33
Oral Tafenoquine
Placebo
Tufts Medical Center
Boston, Massachusetts, United States
RECRUITINGTime to sustained clinical resolution
Time to sustained clinical resolution of all the following symptoms of babesiosis: sweats, joint aches, cough, loss of appetite, muscle aches, headache, chills or shivering, feeling hot or feverish, nausea, fatigue (low energy or tiredness), and vomiting. The time to achieve sustained clinical resolution will be the date when patients first self-report a 7-day period without these symptoms relative to the start of tafenoquine or placebo treatment.
Time frame: Day 1 to 90
Difference in TTMC between TQ and placebo
Difference in TTMC between TQ and placebo from Day 1 to Day 90 (± 7 days). Molecular cure is defined as the time to the first instance of a negative NAT.
Time frame: Day 1 to 90
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