title: A 1-year open-label trial of olanzapine in school-age children with schizophrenia.
abstract: OBJECTIVE
  To determine the response of children with childhood-onset schizophrenia to a 1-year prospective, open-label trial of olanzapine.
  
  
  METHODS
  Twenty children (age range 6-15 years) with childhood-onset Diagnostic and Statistical Manual of Mental Disorders (fourth edition) schizophrenia participated. The treating clinician was free to vary or discontinue dosing and use additional medications. Symptoms were assessed by the Brief Psychiatric Rating Scale-Child version (BPRS-C), Scale for the Assessment of Positive Symptoms, and Scale for the Assessment of Negative Symptoms. Extrapyramidal symptoms, akathisia, temperature, and weight were monitored.
  
  
  RESULTS
  BPRS-C subscales of thought disturbance and psychomotor excitation, and the Scale for the Assessment of Positive Symptoms demonstrated significant decreases by 6 weeks of treatment; BPRS-C anxiety and the Scale for the Assessment of Negative Symptoms (SANS) showed significant improvement after 1 year of treatment. Seventy-four percent of subjects were considered treatment responders, with a greater than 20% reduction in total BPRS-C score and overall impairment of mild or better. Weight gain (body mass index) was above that expected for normal development in every child. No child developed neuroleptic-related dyskinesias. Seventy-four percent (n = 14) of patients completed this 1-year, open-label trial. Of the 5 subjects who discontinued, weight gain was noted as the reason for 4 subjects.
  
  
  CONCLUSIONS
  Olanzapine appears useful in the treatment of childhood-onset schizophrenia, although there may be a delayed onset of benefit for anxiety and negative symptoms. Weight gain is problematic, but the emergence of dyskinesias may be rare. Additional controlled trials are indicated.
authors.affiliation: Department of Psychiatry, University of Colorado Health Sciences Center, Denver, Colorado 80262, USA. randy.ross@uchsc.edu
authors.forename: Randal G
authors.initials: RG
authors.lastname: Ross
authors.forename: Doug
authors.initials: D
authors.lastname: Novins
authors.forename: Gordon K
authors.initials: GK
authors.lastname: Farley
authors.forename: Lawrence E
authors.initials: LE
authors.lastname: Adler
mesh_terms: D000293:Adolescent; D014150:Antipsychotic Agents / Q000009:adverse effects / Q000627:therapeutic use*; D001569:Benzodiazepines; D002648:Child; D004351:Drug Resistance; D005260:Female; D006801:Humans; D008297:Male; D000077152:Olanzapine; D010890:Pirenzepine / Q000009:adverse effects / Q000031:analogs & derivatives* / Q000627:therapeutic use*; D011446:Prospective Studies; D011569:Psychiatric Status Rating Scales; D011618:Psychotic Disorders / Q000188:drug therapy; D012561:Schizophrenia, Childhood / Q000188:drug therapy*; D012565:Schizophrenic Psychology; D015430:Weight Gain
chemical_list: D014150:Antipsychotic Agents; D001569:Benzodiazepines; D010890:Pirenzepine; D000077152:Olanzapine