Please select the eligibility criteria that correspond to the clinical trial below.
Title: A Randomized, Placebo-controlled, Double-masked Clinical Trial of Buspirone in the Treatment of 2- 6 Year Old Children With Autistic Disorder
Brief Summary: The purpose of this study is to evaluate the effects of twice-daily oral buspirone on core features of autism in autistic children aged 2-6 years as measured by the change from baseline in the Autism Diagnostic Observation Schedule (ADOS) Composite Total scores compared to placebo at 6 months.


Options:
A: Inclusion Criteria:

* Participants: must meet the study definition for diagnosis of autistic disorder as determined by clinical diagnosis based upon DSM-IV criteria, the Autism Diagnostic Interview-Revised (ADI-R) and the Autism Diagnostic Observation Schedule (ADOS) performed at baseline 1. ADI-R will be conducted by trained study staff at Baseline 1 Visit. If the participant has had an ADI-R in the past 12 months, this will be accepted provided the person administering and scoring the test is site personnel validated for the study.
* Age 2 to less than 6 years, male and female.
* Parent/Legal Guardian/Caregiver must be able to understand , read and speak English
* Written Informed Consent.

Exclusion Criteria:

* Presence or history of neurological disorders, including seizure disorders (abnormal EEG without seizures will not be excluded), PKU, tuberous sclerosis, Rett syndrome, Fragile X syndrome, Down Syndrome and traumatic brain injury.
* Other medical or behavioral problems requiring medications which are centrally active.
* Clinical or laboratory evidence of renal or hepatic disease (SGPT, GGT \> 2 x normal value, and serum creatinine \> 1.5 x normal value).

Treatment with any medication known to alter the activity of the CYP3A4 enzyme including ketoconazole, itraconazole, grapefruit juice, erythromycin, clarithromycin, cimetidine, verapamil, diltiazem, rifampin, phenytoin, phenobarbital, or carbamazepine within the previous 2 months and for the duration of the study is prohibited.

* Use of centrally acting drugs during the 6 weeks prior or during the study. These drugs include but are not limited to neuroleptics, benzodiazepines, anticonvulsants and antidepressants. Shorter times may be considered depending on the half life of the drug.
* Prior treatment for periods longer than two weeks with buspirone or selective serotonin reuptake inhibitors. This includes herbal substances such as St John's Wort which have similar pharmacological actions.
* Known allergies to study medication.
* Unable to provide the required blood samples.
B: Key Inclusion Criteria:

* Male or female children or adolescents, 6 to 17 years of age, inclusive, at the time of the baseline visit
* Meets current diagnostic criteria of the Diagnostic and Statistical Manual-of Mental Disorders IV-Text Revised for autistic disorder and displays behaviors such as tantrums, aggression, self-injurious behavior, or a combination of these problems. Diagnosis of autistic disorder will be confirmed by the Autism Diagnostic Interview-Revised.
* Participant or designated guardian or caregiver is able to comprehend and satisfactorily comply with the protocol requirements, in the opinion of the investigator.
* Demonstrates behaviors such as tantrums, aggression, or self-injury or a combination of these problems
* An Aberrant Behavior Checklist Irritability subscale score ≥18 AND a Clinical Global Impressions Severity score ≥4 at the Screening and Baseline Visits.
* Mental age of at least 24 months

Key Exclusion Criteria:

* Treatment resistant to neuroleptic medication, based on lack of therapeutic response to 2 different neuroleptics after treatment for at least 3 weeks each.
* Previous treatment with aripiprazole for at least 3 weeks duration at an adequate daily dose, without demonstrating a clinically meaningful response.
* Lifetime diagnosis of bipolar disorder, psychosis, or schizophrenia, or a current diagnosis of major depressive disorder
* Diagnosis of Pervasive Developmental Disorder-Not Otherwise Specified, Asperger's Syndrome, Rett's Syndrome, childhood disintegrative disorder, or Fragile X Syndrome
* History of neuroleptic malignant syndrome
* At significant risk for suicide based on history or routine psychiatric status examination
* A seizure within the past year
* History of severe head trauma or stroke
* History or current evidence of any unstable medical conditions that would expose the patient to undue risk of a significant adverse event or interfere with assessments of safety or efficacy during the course of the trial
* Weight lower than 15 kg
* Known allergy or hypersensitivity to aripiprazole or other dihidrocarbostyrils
* History of a clinically significant low white blood cell count or a drug-induced leukopenia/neutropenia
* Any other medically significant abnormal laboratory test or vital sign result or electrocardiogram finding
C: Inclusion Criteria (most important):

* ASD (autistic disorder or Asperger's disorder or Pervasive Developmental Disorder - Not Otherwise Specified \[PDD NOS\])
* Criteria A through D for Attention-Deficit/Hyperactivity Disorder (ADHD)
* At least 1.5 standard deviations above the age norm for their diagnostic subtype using published norms for the ADHD Rating Scale-IV-Parent Version
* Intelligence quotient (IQ) score \> 60

Exclusion Criteria (most important):

* weight under 20 kg
* Patients who meet Diagnostic and Statistical Manual of Mental Disorders Fourth Edition, Text Revision (DSM-IV-TR) criteria for ASD other than Autistic Disorder, PDD-NOS or Asperger's Disorder;history of Bipolar I or II disorder, schizophrenia, another psychotic disorder, substance abuse;Have a significant medical condition such as heart disease, hypertension, liver or renal failure, pulmonary disease, or seizure disorder identified by history, physical examination, or laboratory tests; Patients who have taken (or are currently taking) anticonvulsants for seizure control.
* patients at serious suicidal risk.
* Contraindication to the use of atomoxetine
* Patients who in the investigator's judgment are likely to need psychotropic medications apart from the drug. Patients who at any time during Study Period II are likely to begin a structured psychotherapy, likely to require hospitalization (i.e. in-patient treatment) or likely to be dismissed from in-patient treatment. Psychotherapy (including hospitalization) initiated at least 2 months prior to study participation is acceptable; however, after study participation has begun, only during Study Period III supportive or educational therapy is permitted.
D: Inclusion Criteria:

* Weight of at least 15 kg (33.75 lbs)
* Meets DSM-IV criteria for autistic disorder
* Outpatient
* Medication-free for at least 2 weeks prior to baseline for all psychotropic medications. More information about this criterion, including exceptions, can be found in the protocol.
* Clinical Global Impression Scale Severity score (CGI-S) of at least 4
* Irritability subscale of the Aberrant Behavior Checklist (ABC) score of at least 18
* An IQ of at least 35 or a mental age of at least 18 months
* In good physical health

Exclusion Criteria:

* Meets DSM-IV criteria for Asperger's disorder, Rett's disorder, childhood disintegrative disorder, any other pervasive developmental disorder (PDD), schizophrenia, psychotic disorder, or bipolar disorder
* Current or past history of alcohol or other substance abuse within 6 months of study entry
* Comorbid neurodevelopmental disorder with possible association to autism (e.g., fragile-X syndrome, tuberous sclerosis)
* A significant medical condition such as heart, liver, kidney, or lung disease, or a seizure disorder
* Pregnant
* Prior adequate use of aripiprazole. More information about this criterion can be found in the protocol.
* Evidence of hypersensitivity to aripiprazole
* History of neuroleptic malignant syndrome

Answer: A