Study Demonstrated Long-Term Treatment with Zyprexa(R) Reduced Violent Behavior in People with Schizophrenia Compared to Risperi
December 14 2004 - 9:01AM
PR Newswire (US)
Study Demonstrated Long-Term Treatment with Zyprexa(R) Reduced
Violent Behavior in People with Schizophrenia Compared to
Risperidone INDIANAPOLIS, Dec. 14 /PRNewswire-FirstCall/ --
Long-term treatment with Zyprexa(R) (olanzapine) significantly
lowered risk of violent behavior in people with schizophrenia
versus risperidone (Risperdal(R), Janssen), according to a study
published in the December issue of the Journal of Clinical
Psychiatry. The three-year naturalistic or "real world" study, the
Schizophrenia Care and Assessment Program (SCAP), also showed that
improved medication adherence was an important element that
contributed to the reduced violence risk in patients treated with
Zyprexa. "Violent behavior, even in a small proportion of people
with schizophrenia, can stigmatize all those with the disease,
preventing acceptance of people with psychiatric disabilities in
society, disrupting continuity of care, and limiting the
effectiveness of community-based mental health services," said Jeff
Swanson, Ph.D., associate professor of Psychiatry and Behavioral
Sciences at Duke University Medical Center and SCAP investigator.
Unlike a traditional clinical trial, SCAP is a longitudinal
observational study designed to understand the treatment provided
to schizophrenia patients in community care settings. SCAP is one
of the largest naturalistic studies ever conducted in the United
States, consisting of 2,400 patients treated at centers across the
country. SCAP investigators from Duke University Medical Center
studied violent behavior in a smaller group of patients in North
Carolina, one of the six states where SCAP was carried out. Key
Findings In this non-randomized prospective study, 124 adults with
schizophrenia- spectrum disorders receiving services in
public-sector mental health systems in North Carolina were followed
for three years. Rates of violence among people who were initiated
on Zyprexa (N=59) were compared with people who were initiated on
risperidone (N=65) at six-month intervals. -- Remaining on Zyprexa
for one year or more significantly lowered the risk of violent
behavior - No significant change in violence risk was found for
subjects remaining on risperidone for one year or more -- More
violence-prone patients were initially switched to Zyprexa -- The
reduction in violent behavior associated with Zyprexa treatment was
attributed to higher rates of medication adherence Given the
observational design of this study and the absence of random
assignment to treatment conditions, it is possible that selection
bias could affect these results. A patient was classified as a
Zyprexa patient if he or she was prescribed Zyprexa for more than
half of each six-month period during the study. Likewise a patient
was classified as a risperidone patient if he or she was prescribed
risperidone for more than half of each six-month period during the
study. "Data such as these can be important to healthcare
professionals treating patients in community settings where
nonadherence and substance abuse often further compound the risk of
violent behavior," said Marvin Swartz, M.D., professor and head of
the Division of Social and Community Psychiatry at Duke University
Medical Center, and SCAP investigator. Study Design All study
participants had been diagnosed with schizophrenia-spectrum
disorders. The SCAP research design is naturalistic and
observational; therefore, no experimental intervention or
interference with usual patterns of treatment took place. Violent
behavior was measured using the MacArthur Community Violence
Interview, review of outpatient and inpatient medical records, and
review of arrest records for violent offenses documented in the
North Carolina Department of Justice database. Medication
adherence, certain, designated adverse events, patient
sociodemographic characteristics and clinical variables
(hospitalization history, substance abuse, psychotic symptoms and
functional impairment) were assessed at six-month intervals using a
patient-reported validated measure, the SCAP Health Questionnaire.
Results were obtained using multivariable time series analysis
controlling for selected demographic and clinical covariates. The
study was sponsored by Eli Lilly and Company. About Schizophrenia
Schizophrenia is a severe and debilitating psychosis often
characterized by acute episodes of delusions (false beliefs that
cannot be corrected by reason), hallucinations (usually in the form
of non-existent voices) and long- term impairments such as
diminished emotion, lack of interest and depressive signs and
symptoms. It is usually associated with a disruption in social and
family relationships. Schizophrenia is a common severe mental
illness. More than two million American adults have the disease,
with more than 100,000 new cases reported each year. Symptoms of
schizophrenia usually begin to appear in the teenage years or early
to mid-twenties. Important Information About Zyprexa Zyprexa is
indicated in the United States for the short-term and long-term
treatment of schizophrenia, for maintenance in the treatment of
bipolar disorder, and either alone or in combination with lithium
or valproate (Depakote(R), Abbott) for the short-term treatment of
acute mixed or manic episodes associated with bipolar disorder. In
addition, on March 29, 2004, Zyprexa for injection was approved by
the FDA for the control of acute agitation associated with
schizophrenia and bipolar mania. Since its introduction in 1996,
Zyprexa has been prescribed to more than 16 million people
worldwide. The most common treatment-emergent adverse event
associated with Zyprexa in placebo-controlled, short-term
schizophrenia and bipolar mania trials was drowsiness. Other common
events were dizziness, weight gain, personality disorder (COSTART
term for nonaggressive objectionable behavior), constipation,
restlessness, episodes of low blood pressure, dry mouth, weakness,
upset stomach, increased appetite, and tremor. A small number of
patients experienced asymptomatic elevations of certain liver
enzymes; none of these patients experienced jaundice.
Hyperglycemia, in some cases associated with ketoacidosis, coma, or
death, has been reported in patients treated with atypical
antipsychotics including Zyprexa. Assessment of the relationship
between atypical antipsychotic use and glucose abnormalities is
complicated by the possibility of an increased background risk of
diabetes mellitus in patients with schizophrenia and the increasing
incidence of diabetes mellitus in the general population. All
patients taking atypicals should be monitored for symptoms of
hyperglycemia. Persons with diabetes who are started on atypicals
should be monitored regularly for worsening of glucose control;
those with risk factors for diabetes should undergo baseline and
periodic fasting blood glucose testing. Patients who develop
symptoms of hyperglycemia during treatment should undergo fasting
blood glucose testing. Prescribing should be consistent with the
need to minimize the risk of neuroleptic malignant syndrome,
tardive dyskinesia, seizures and low blood pressure. In short-term
(six-week) acute bipolar mania trials in combination with lithium
or valproate, the most common treatment emergent adverse event
associated with Zyprexa and lithium or valproate was dry mouth.
Other common events were weight gain, increased appetite,
dizziness, back pain, constipation, speech disorder, increased
salivation, amnesia and abnormal burning or tingling of the skin.
Although the efficacy of Zyprexa in elderly patients with dementia
has not been established in clinical trials and Zyprexa is not
approved for use in this patient population, it is important to
note the label for Zyprexa includes a warning for elderly patients
with dementia. The warning states that strokes or mini-strokes
(also called transient ischemic attacks or TIAs), including
fatalities were reported in elderly patients with dementia-related
psychosis participating in Zyprexa clinical trials. In addition,
Lilly has completed a medical review of five placebo-controlled
trials in elderly patients with dementia, and found an increased
incidence of mortality from any cause in the Zyprexa group compared
to patients who took placebo (3.5% vs. 1.5%). In this review, risk
factors that predisposed Zyprexa patients to increased mortality
included age greater than 80 years, sedation, simultaneous use of
certain sedative and anti-anxiety medications (called
benzodiazepines) or presence of pulmonary conditions such as
pneumonia. Lilly is currently addressing this mortality data with
the FDA. Full prescribing information is available at
http://www.zyprexa.com/ . About Eli Lilly and Company Lilly, a
leading innovation-driven corporation, is developing a growing
portfolio of first-in-class and best-in-class pharmaceutical
products by applying the latest research from its own worldwide
laboratories and from collaborations with eminent scientific
organizations. Headquartered in Indianapolis, Ind., Lilly provides
answers -- through medicines and information -- for some of the
world's most urgent medical needs. Additional information about
Lilly is available at http://www.lilly.com/ . LillyAnswers ensures
that low-income Medicare enrollees with the greatest need have
complete access to the Lilly products they require. The centerpiece
of the patient assistance program, the LillyAnswers card, allows
seniors and people with disabilities under Medicare to pay a flat
$12 fee for a 30-day supply of certain retail distributed Lilly
drugs, including Zyprexa. Since Lilly implemented LillyAnswers in
2002, hundreds of thousands of people without prescription drug
insurance have received more than a half million Lilly products.
LillyAnswers enrollment applications are available by calling the
toll-free number: 1-877-RX-LILLY (1-877-795-4559) or online at
http://www.lillyanswers.com/ . P-LLY This press release contains
forward-looking statements about the potential of Zyprexa for the
treatment of schizophrenia, including the associated risk of
violent behavior in some patients, and reflects Lilly's current
beliefs. However, as with any pharmaceutical product, there are
substantial risks and uncertainties in the process of development
and commercialization. There is no guarantee that the product will
continue to be commercially successful. For further discussion of
these and other risks and uncertainties, see Lilly's filings with
the United States Securities and Exchange Commission. Lilly
undertakes no duty to update forward-looking statements. (Logo:
http://www.newscom.com/cgi-bin/prnh/20031219/LLYLOGO )
http://www.newscom.com/cgi-bin/prnh/20031219/LLYLOGO DATASOURCE:
Eli Lilly and Company CONTACT: Kerry Dixon of GCI Group,
+1-212-537-8261; or Marni Lemons of Eli Lilly and Company,
+1-317-433-8990
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