Loading clinical trials...
Loading clinical trials...
Find 3,190 clinical trials for rheumatoid arthritis near Los Angeles, California. Connect with research centers in your area.
Showing 2261-2280 of 3,190 trials
NCT02531321
The project is a two-arm prospective cohort and pharmacokinetic study comparing levonorgestrel and ethinyl estradiol pharmacokinetics in HIV-positive women taking antiretroviral regimens that include ritonavir to those in women who take regimens known not to interact with combined oral contraceptives. In addition, the prevalence of ovulation will be measured in each group. Participants will take a combined oral contraceptive containing levonorgestrel and ethinyl estradiol for 21 days, during which they will undergo twice-weekly serum progesterones. On the final day, they will complete a pharmacokinetic study. The investigators hypothesize that levonorgestrel levels, as measured by area-under-the-curve from 0 to 72 hours, will be increased in women on ritonavir, while ethinyl estradiol levels will be decreased and ovulation, defined by a serum progesterone of at least 3 ng/mL, will be unchanged. This study will be the first to evaluate the effects of ritonavir on the pharmacokinetics of a combined oral contraceptive containing the progestin levonorgestrel. In addition, no previous studies have rigorously assessed ovulation in women taking protease inhibitors and combined oral contraceptives. As a result, this study will provide new information correlating pharmacokinetic changes with effects on ovulation.
NCT03888391
Participants who exhibit sufficient ADHD symptom improvement in a prior study of active TNS will be invited to continue in a 12-month extension study, designed to collect additional data on long-term response and tolerability and to provide participants ongoing clinical benefit from treatment.
NCT02167685
The prospective observational study is to establish a registry database to evaluate the potential impact of prior treatment with CMX001 on the long-term incidence of specific events, such as outcomes, late CMV and other Double-stranded DNA virus associated events, s well as survival rates in subjects previously enrolled in selected clinical studies of CMX001. Each Registry participant will be followed for a period of approximately 3 years from their enrollment in the Registry.