Treatment Groups and Duration:~Following a washout period of up to 12 weeks, subjects will enter a screening period of up to 12 weeks including an observation period consisting of a complete menstrual cycle.~Subjects will be randomly assigned in a 1:1:1:1 ratio to receive either 12 weeks of TU2670 320 mg QD, TU2670 240 mg QD, TU2670 120 mg QD, or matching placebo. TU2670 or a matching placebo will be administered in the clinic on Day 1. Subjects in the PK subset population will also receive the following additional doses in the clinic: Day 2 (after collection of the 24-hour PK sample); the dose on the day scheduled for subsequent serial PK sample collection (Week 4 or Week 5); and the next scheduled dose (after collection of the 24-hour PK sample). All other doses can be taken by the subject at home. Following the end of treatment, subjects will be followed up for safety for 12 weeks.~Statistical Methods:~All formal statistical tests will be done at the 5% 2-sided significance level. Point estimates will have 2 sided 95% confidence intervals (CIs) where applicable.~Where appropriate, variables will be summarized descriptively (frequency and percent will be summarized for categorical variables; n (number of available subjects), mean, standard deviation [SD], median, minimum, and maximum will be presented for continuous variables) by study visit and by treatment group.~Statistical summaries will be presented for the changes from baseline to each time point in efficacy endpoints that it is applicable.
This Protocol for TU2670 is to investigate the efficacy, safety, pharmacokinetics (PK), and pharmacodynamics (PD) of multiple doses of TU2670 in subjects with moderate to severe endometriosis-associated pain.