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Discover 9,312 clinical trials near Seattle, Washington. Find research studies in your area.
Showing 4741-4760 of 9,312 trials
NCT03323801
Men with infertility and normal hormone levels have few options for fertility treatment. Previous research suggests that men with infertility may have low levels of the active form of Vitamin A, called retinoic acid, in their testes. In a pilot study of 20 men with low numbers of sperm (\<10 million motile sperm), roughly half the men showed improvement in sperm production. Thus, we want to see if retinoic acid administration to men with azoospermia (no sperm present) can initiate sperm production.
NCT03185897
Assess the seroprevalence of neutralizing antibodies (NAb) to AAV in adults with severe hemophilia A (coagulation factor VIII \[FVIII\] \<1%) or moderately severe to severe hemophilia B (coagulation factor IX \[FIX\] ≤2%).