6-Month Open-Label Safety Study Of PD 0332334 In Elderly Patients With Generalized Anxiety Disorder (GAD)

Inclusion Criteria: * Men or women age \> 65 years. * A primary diagnosis of Generalized Anxiety Disorder according to the Diagnostic and Statistical Manual-IV (DSM-IV). * Subjects must have a HAM-A score of 16 or higher at both screening and baseline visits. Exclusion Criteria: * Women who are pregnant or contemplating pregnancy (eg, via in vitro fertilization) during the study through 30 days after the last dose of study medication. * Subjects with evidence of a current (within the past 6 months) clinically significant or unstable hematological, autoimmune, renal, endocrine, pulmonary, gastrointestinal, cardiovascular, hepatic, pancreatic, psychiatric, neurologic, immunological or retinal disorder; subjects with an active infection within the past 2 months. * Subjects who have an ongoing, unresolved, clinically significant cardiovascular or cerebrovascular medical problem. * Mini Mental Status Exam (MMSE) score \<24 or possibility of undiagnosed dementia, cognitive or amnestic disorder, including, but not limited to mild cognitive impairment.