Please select the eligibility criteria that correspond to the clinical trial below.
Title: A Pilot Study of Oral N-Acetylcysteine in Children With Autism Spectrum Disorders
Brief Summary: The purpose of this study is to determine whether treatment with oral N-acetylcysteine (NAC) will improve behavior problems often associated with autism spectrum disorders.


Options:
A: 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.
B: * Diagnosis of PDD (including Asperger's Disorder and Autistic Disorder)
* Clinically significant symptoms of ADHD
* Mental age of at least 18 months
* Blood pressure within normal ranges for age and gender
* Weight 16 kg or more
* Absence of chronic tic disorder
* Absence of any medical condition that would be incompatible with the study treatments
* Absence of evidence of hypersensitivity to study treatments
C: Inclusion Criteria:

* Diagnosis of autism

Exclusion Criteria:

* Diagnosis of Asperger Syndrome, Rett Syndrome, Childhood Disintegrative Disorder, or Pervasive Development Disorder-Not Otherwise Specified
* Informed that treatment with a selective serotonin reuptake inhibitor (SSRI) is medically inadvisable
* Need for ongoing psychotropic medication (except for diphenhydramine, clonidine, or melatonin for sleep)
* Recent use of stimulants within 5 days prior to enrollment
* Ongoing need for or recent use of most psychotropic medications within 14 days of enrollment
* Recent initiation of specialized educational, behavioral, or diet intervention for autism in the month prior to enrollment
D: Inclusion Criteria:

* Diagnosis of an autism spectrum disorder (autistic disorder, Asperger's syndrome, and pervasive developmental disorder, not otherwise specified).
* Significant hyperactivity, inattention, or impulsivity as determined by a score on an investigator-administered ADHD Rating Scale (ADHDRS)-Home Version that is at least 1.5 standard deviations above the mean for age and sex
* Parent/caregiver's primary complaint about the child is inattention, hyperactivity, and/or impulsivity ("ADHD" symptoms)
* Symptoms present for 6 months prior to study entry
* Psychotropic drug-free for at least 2 weeks prior to starting study medication. This drug-free period will be 5 weeks for fluoxetine (Prozac).

Exclusion Criteria:

* Weighs less than 15 kg (about 33 pounds)
* Any another psychiatric disorder that may require a different treatment, including psychotic disorders, major affective disorders, obsessive-compulsive disorder, panic disorder, or substance-related disorders
* Diagnostic and Statistical Manual of Mental Disorders, Fourth Edition (DSM-IV) diagnosis of Rett's disorder or childhood disintegrative disorder
* Presence of extreme aggression or self-injury
* Currently taking an effective psychotropic drug
* Currently using other medications that may be unsafe to take with atomoxetine (e.g., potent CYP 2D6 inhibitors, intravenous albuterol, monoamine oxidase inhibitors\[MAO\])
* Inability to swallow study medication
* Presence of a medical condition that would make treatment with atomoxetine unsafe (e.g., unstable hypertension or cardiac disease, asthma requiring frequent treatment with albuterol, narrow angle glaucoma, pregnancy, etc.)
* Mental age of less than 18 months
* Previous adequate trial of atomoxetine
* Previous evidence of hypersensitivity or an allergic reaction to atomoxetine
* Clinically significant abnormalities in laboratory measures indicating an undiagnosed medical condition as determined by the study physician in discussion with the participant's primary care physician
* Clinically significant abnormalities on ECG as determined by a pediatric cardiologist
* Pregnant
* Initiation of a new psychosocial intervention within 90 days prior to starting study medication. Participants who have recently had a significant change in their psychosocial interventions will not be eligible until this intervention has been stable for 90 days in order to avoid confounding results of the study. Stable interventions (e.g., speech and occupational therapy) will be allowed to continue during the course of the study. 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.

Answer: A