<qa>  What is the positive pregnancy test?20. Female is pregnant or breastfeeding within 2 years prior to the dose of study drug on Day 1 or positive pregnancy test serumurine result during the Screening visit and before the dose of study drug on Day 1. Patients who have a false positive test attributable to their post-menopausal state or kidney disease, as determined by the Investigator, will be allowed to participate. 