Please select the eligibility criteria that correspond to the clinical trial below.
Title: A Randomised, Double-blind, Placebo-controlled, 6-month Study of the Efficacy and Safety of Memantine in Patients With Parkinson's Disease Dementia or Dementia With Lewy Bodies
Brief Summary: The purpose of this exploratory study is to determine whether memantine can provide benefits on clinical symptoms in patients with Parkinson's Disease Dementia or Dementia with Lewy Bodies.


Options:
A: Inclusion Criteria:

Outpatients who:

* had a primary diagnosis of probable Alzheimer's Disease (AD) according to National Institute of Neurological and Communicative Disorders and Stroke and the Alzheimer's Disease and Related Disorders Association (NINDS-ADRDA) criteria, and with Diagnostic and Statistical Manual of Mental Disorders, 4th edition, text revised (DSM IV TR) criteria for dementia of the Alzheimer's type
* had moderate to severe dementia, defined as a Mini Mental State Examination (MMSE) total score \>=5 and \<=15 at screening. Before substantial protocol amendment SA04 (dated 7 October 2004) was implemented, the MMSE total score range at screening was \>=8 and \<=18. Substantial protocol amendment SA07 (dated 4 September 2009) allowed patients who had previously had an MMSE score of 16 or 17 to be re-screened \>6 months after their initial screening and, if there was documented evidence of cognitive decline, to be enrolled in the study
* had a Neuropsychiatric Inventory (NPI) total score \>=13 and an NPI agitation/aggression subitem score \>=1 at screening and baseline
* did not have vascular dementia or a modified Hachinski Ischaemia Scale score \>4 at screening

Exclusion Criteria:

* Evidence of clinically significant active disease, evidence of other neurological disorders, and previous treatment with memantine
B: Inclusion Criteria:

* Parkinson's disease of more than 5 years
* Subthalamic nucleus stimulation
* Gait disorders impeding moderately to severely the activities of daily living
* gait disorders including freezing of gait
* able to walk without physical assistance

Exclusion Criteria:

* Dementia (MMSE \< 27 et score de Mattis \< 130)
* Requiring dopatherapy modification
* Requiring subthalamic stimulation parameters adaptation
* Psychiatric disorders: hallucinations, unstable thymic disorders, psychosis)
* Cardiac disorders: dysrhythmia or unstable arterial hypertension
* Unstable or severe medical illness
* intolerance or contraindication to memantine
C: Inclusion Criteria:

1. Residential/Inpatients at recruitment to the study with a history of at least 2 weeks behavioural disturbance.
2. Alzheimer's Disease only as per McKhann Criteria + Hachinski Score\<=4.
3. Moderately severe to severe Alzheimer's Disease (baseline MMSE \</=19).
4. Clinically significant agitation that requires treatment.
5. Severity of agitation defined by Cohen Mansfield agitation inventory (CMAI) \> /=45.
6. Age \>/= 55.

Exclusion Criteria:

1. Memantine usage in the 4 weeks prior to the start of the study.
2. On Cholinesterase inhibitor for less than 3 months and not on a stable dose.
3. Anti-psychotic, anti-epileptic, antidepressant, benzodiazepine, lithium or hypnotic dosage alteration in the 2 weeks prior to the start of the study.
4. Antiparkinsonian medication.
5. Hypersensitivity to memantine or any of the excipients in the formulation.
6. Severe renal impairment.
7. Epilepsy, history of convulsions or seizure, or receiving any anti-epileptic treatment.
8. Concomitant usage of N-methyl-D-aspartate (NMDA) antagonists such as amantadine, ketamine or dextromethorphan.
9. Recent myocardial infarction, uncompensated congestive heart failure and uncontrolled hypertension.
10. Severe, unstable or poorly controlled medical illness.
11. Any disability that may interfere with the patient completing the study procedure.
12. Active malignancy.
13. Delirium, pain or any medical illness as a clear cause of agitation.
14. Any important drug interactions: Prohibited during study and in the 14 days preceding enrollment/inclusion are: Analgesic dextromethorphan, Dopaminergics- amantadine, Warfarin due to theoretical INR prolongation.
D: Inclusion Criteria:

* The study population will consist of male or female outpatients at least 50 years of age with mild to moderate disease severity (MMSE 12 to 24 inclusive) according to UKPDS and DSM IV TR criteria (for PDD patients) and the third report of the DLB consortium (for DLB patients) and who have a knowledgeable and reliable caregiver to accompany the patient to all clinic visits during the course of the study.

Exclusion Criteria:

* Evidence of clinically significant active disease, evidence of other neurological disorders, and current treatment with AChEIs.

Answer: D