Clinical Trial to Determine Tolerable Dosis of Vorinostat in Patients With Mild Alzheimer Disease

The MTD of Vorinostat in the treatment of Alzheimer's patients is to be determined by using an open, non-randomized, multicentric dose-finding study with adaptive design. This Clinical Trial will take place in 2 parts. The first part will be performed as a dose escalation part in cohorts of three subjects. Possible dosages will be: one, two, three or four capsules (100 mg per capsule) once per day. The first cohort receives a dose of 100 mg per day. After the treatment, a Vorinostat-free follow-up phase will take place. For the following cohorts, dose increases, a repetition of the previous dose or a dose reduction are possible. After the dose escalation with a determination of the MTD, a dosage confirmation is carried out with additional subjects. The subjects are given a dose of Vorinostat of MTD over 4 weeks followed by a Vorinostat-free follow-up phase.