Please select the eligibility criteria that correspond to the clinical trial below.
Title: An Open-label (Part One) and a Randomized, Double-blind, Placebo-Controlled (Part Two) Study of the Pharmacokinetics, Safety, Efficacy, and Tolerability of Memantine in Pediatric Patients With Autism
Brief Summary: The purpose of this study is to investigate the safety and efficacy of memantine extended release, as well as its extent of absorption in pediatric patients with autism.


Options:
A: Inclusion Criteria:

* Males or females ages 6 to 12 years
* Diagnosis of autistic disorder, according to DSM-IV-TR using Autism Diagnostic Interview-Revised and Autism Diagnostic Observation Schedule (modules 2 \& 3).
* A knowledgeable caregiver capable of providing reliable information about the patient's condition, able to attend all clinic visits with the patient
* Patients over age 12, only if they completed Study MEM-PK-21

Exclusion Criteria:

* Medical history of active epilepsy/seizure disorder except simple febrile seizures
* Participation in any other clinical investigation using an experimental drug within 30 days of the start of this study
B: PROTOCOL ENTRY CRITERIA:

--Disease Characteristics--

Meets diagnostic criteria for autism

--Prior/Concurrent Therapy--

Other:

* At least 3 months since prior electroconvulsive therapy
* At least 1 month since prior investigational drugs or treatment with any drug known to cause major organ toxicity
* At least 2 weeks since prior monoamine oxidase inhibitors
* At least 6 weeks since prior long acting phenothiazines
* At least 1 week since prior other psychotropic drugs
* No prior fluoxetine of 20 mg/day for 6 weeks
* At least 6 weeks since prior fluoxetine
* No concurrent use of terfenadine (Seldane) or astemizole (Hismanal)
* No concurrent electroconvulsive therapy or other psychotropic drugs (unless otherwise permitted)
* Prior participation in another serotonin reuptake inhibitor trial allowed

--Patient Characteristics--

Hematopoietic: No significant hematopoietic disease

Hepatic: No prior or concurrent liver disease

Renal: No prior or concurrent kidney disease

Cardiovascular:

* No significant cardiovascular disease
* No abnormal EKG

Neurological:

* No prior seizure disorder or high risk development of seizures
* No prior cerebrovascular disease
* No prior brain trauma

Other:

* Not pregnant or nursing
* Negative pregnancy test
* No unstable major medical illness or systemic disease
* No moderate or severe mental retardation and motor deficits (IQ less than 50)
* No family history of bipolar disorder
* No prior or concurrent other mental disorders (e.g., schizophrenia, schizoaffective, organic, or bipolar disorders)
* No significant autoaggressive behavior or serious suicidal risk
* No prior or concurrent gastrointestinal conditions
* No unstable endocrine disease (e.g., hypo or hyperthyroidism)
* No prior or concurrent malignancy
* Must be able to tolerate tapering of psychoactive medication
* No history of hypersensitivity or severe side effects to fluoxetine or other serotonin reuptake inhibitors
* No history of severe personality disorder or noncompliance
C: Inclusion Criteria:

* Age 4 to 12 years.
* Diagnosis of autistic disorder, Asperger's disorder, or PDD NOS.
* If taking concomitant psychotropic medications, the medication must be at a constant dose for 60 days with no dose changes planned for the duration of the trial.
* Able to swallow capsules.

Exclusion Criteria:

* Presence of any medical condition that significantly increases risk or hampers assessment (e.g., unstable hypertension or cardiac disease, unstable asthma, kidney disease, unstable seizure disorder, pregnancy or any other medical condition as determined by the investigator).
* Weight \< 15 kg.
* Subjects taking concomitant medications or supplements known for their glutamatergic effects (e.g., dextromethorphan, D-cycloserine, amantadine, memantine, lamotrigine, riluzole) or antioxidant properties (high dose vitamin supplements, DMG, TMG, many alternative treatments) within 30 days of the baseline visit with the exception of short term use of dextromethorphan as needed as a cough suppressant. The use of this medicine must be stopped at least 7 days prior to the baseline visit. Regular multivitamins will be allowed.
* Subjects taking daily acetaminophen or nonsteroidal anti-inflammatory drugs within 30 days of the baseline visit.
* Profound mental retardation as evidenced by a mental age below 18 months.
* Subjects taking concomitant medications with the potential for pharmacokinetic or pharmacodynamic drug-drug interactions (e.g., carbamazepine) within 30 days of the baseline visit.
* Subjects who are likely to experience significant changes in their ongoing psychosocial or medical treatments for autism over the course of the trial (e.g., initiation of new behavioral therapy, initiation of new medication or alternative treatment \[e.g., chelation\]). Minor changes in ongoing treatment (e.g., missed therapy sessions due to holiday/vacation; planned break in therapy due to school holidays) will not be considered significant.
* History of prior treatment with NAC.
* Evidence of hypersensitivity/allergy to NAC.
* Presence of certain neurodevelopmental disorders such as Fragile X Syndrome, Tuberous Sclerosis, or other neurological disorders known to be associated with autism or autistic features.
* Diagnosis of Rett's disorder, childhood disintegrative disorder, schizophrenia, bipolar disorder, another psychotic disorder, or substance abuse disorder.
D: Inclusion Criteria:

* Meet DSM-5 criteria for Autism Spectrum Disorder confirmed by the Autism Diagnostic Interview-Revised (ADI-R) and the Autism Diagnostic Observation Schedule- Generic (ADOS-G)
* Children between the ages of 5-12 years of age
* Language delay (lack of fluent phrase speech) reflected by use of ADOS Module 1 or 2
* Must be on stable medication regimens for at least three months prior to enrollment, assuming the concomitant medication is safe for use with IGF-1

Exclusion Criteria:

* Closed epiphyses
* Active or suspected neoplasia
* Intracranial hypertension
* Hepatic insufficiency
* Renal insufficiency
* Cardiomegaly/valvulopathy
* History of allergy to IGF-1
* Patients with comorbid conditions deemed too medically compromised to tolerate the risk of experimental treatment with IGF-1

Answer: A