1 psychopharmacological drugs advisory committee meeting february 14, 2001 nda 21-253 intramuscular...
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Psychopharmacological Drugs Advisory Committee Meeting
February 14, 2001
NDA 21-253
Intramuscular Olanzapine for the
Rapid Control of Agitation
Eli Lilly and CompanyIndianapolis, IN
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• The Agitated Patient
• Clinical Development of IM Olanzapine
Agenda
John Kane, M.D.
Alan Breier, M.D.
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The Agitated Patient
John Kane, M.D.
ChairmanDepartment of Psychiatry
Hillside Hospital Glen Oaks, NY
and Professor of Psychiatry, Neurology, and Neuroscience
The Albert Einstein College of MedicineBronx, NY
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Agitation
• Common clinical challenge
• When severe, may be the target for urgent intervention
• Cuts across the boundaries of diverse diagnostic categories
• Phenomenology relatively consistent across disease states
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Agitation: Definition
Agitation is excessive motor or verbal activity.
Common examples include:– hyperactivity
– assaultiveness
– verbal abuse
– threatening gestures and language
– physical destructiveness
– vocal outbursts
– excessive verbalizations of distress
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Agitation: Clinical Implications
In more severe forms, agitation may cause:
• A psychiatric emergency mandating rapid treatment
• Violent, destructive behavior
• Extreme personal distress
• Harm to self, caregivers, and others
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Agitation: A Major Clinical ChallengePsychiatric Emergency
• A mean of 400 patients per month are evaluated in a typical Psychiatric Emergency Service (PES) (Currier 1999)
• 135,000 psychiatric emergency visits per year in New York State alone (Allen 2000)
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Agitation: A Major Clinical ChallengeMechanical Restraint
• 8.5% of all psychiatric emergency patients require mechanical restraints for agitation (Currier 2000)
• Mean duration of restraint is 6 hours (Currier 2000)
• 111 fatalities over 10 years in New York facilities due to restraints (Sundram 1994)
• Estimates of 50 - 150 deaths per year nationwide due to restraints (Allen 2000)
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Agitation: A Major Clinical ChallengeAssaults
• A mean of 8 assaults per year occur in a typical Psychiatric Emergency Service (Currier 2000)
• 56.5% of assaults resulted in lost time from work (Currier 1999)
• 6 to 1 ratio of nurses being assaulted compared to doctors, most likely related to nurses' role in restraint application (Currier 2000)
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Parenteral Pharmacotherapy
Indications for Use:
• When very rapid control of agitation is required - efficacy within minutes to hours
• When compliance to oral treatment not feasible
• In general, IM dosing used during first 24 hours, switch to oral if longer term treatment is appropriate
Current Therapies include:
– Benzodiazepines
– Typical Antipsychotics
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Limitations of
Parenteral Pharmacotherapy for Agitation
Benzodiazepines– respiratory depression– excessive sedation– disinhibition
Typical Antipsychotics– acute dystonia– akathisia– excessive sedation – Neuroleptic Malignant Syndrome
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Acute Treatments for Agitation vs.
Sustained Therapies for Specific Diseases Urgent Treatments for Agitation Sustained Therapies for Disease
Modality Duration Modality Duration
Schizo-phrenia
Structured Environment Psychosocial Interventions
IMa Antipsychotics / Benzodiazepines
Min-Hrs
Oral / Depot Antipsychotics
Wks-
Mos-Yrs
Bipolar Disorder
Structured Environment Psychosocial Interventions
IM Benzodiazepines / Antipsychotics
Min-Hrs
Oral Mood Stabilizers / Antipsychotics
Wks-
Mos-Yrs
Dementia of Alz. Type
Structured Environment Environmental Interventions Cholinesterase Inhibitors
IM Benzodiazepines / Antipsychotics
Min-Hrs
Oral Agents (e.g., depakote, carbamazepine, antipsychotics)
Wks-
Mos-Yrs
a When oral therapy is not feasible
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Clinical Development of IM Olanzapine
Alan Breier, M.D.
Leader, Zyprexa Product Team Lilly Research Fellow
Lilly Research Laboratories and
Professor of PsychiatryIndiana University School of Medicine
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Optimal Features of IM Pharmacotherapy
• Rapid onset of action
• Effective response to first dose
• Calming effect without excessive sedation
• Low incidence of acute dystonia and other extrapyramidal side effects
• Low incidence of ECG abnormalities
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History of Regulatory Interactions
May 14, 1998 Meeting with FDA
• FDA indicated IM antipsychotics are used for the control of agitation in numerous disease states
• FDA recommended studies of agitated patients in multiple disease states based on anticipated use
November 12, 1998 Teleconference with FDA
• Discussed the proposed clinical plan: 4 pivotal clinical studies in 3 agitated patient populations (schizophrenia, bipolar mania, dementia)
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Proposed Label Indication
ZYPREXA IntraMuscular [IM olanzapine] is indicated
for the rapid control of agitation. The efficacy of
ZYPREXA IntraMuscular for the control of agitation
was established in 4 short-term (24 hours) placebo-
controlled trials in agitated inpatients with
schizophrenia, Bipolar I Disorder (manic or mixed
episodes), or dementia (see CLINICAL
PHARMACOLOGY)
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Clinical Trial Challenges
• No precedent
• Placebo and active comparator designs
• No "gold standard" agitation scale
• Data capture frequency - over minutes to hours
• Enrolling patients with appropriate levels of agitation
• Ethical considerations
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Efficacy and Safety of IM Olanzapine
• Pharmacokinetics
• Clinical methodology and rationale
• Efficacy results
• Safety
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Mean Values of Olanzapine PK Variables:
One 10 mg Oral Dose vs. Two 5 mg IM Doses
Cmax (ng/mL) 15.1 23.7
AUC (nghr/mL) 499 522
CLp (L/hr) 22.1 20.2
T½ (hr) 31.0 30.4
Vd (L/kg) 12.2 11.1
PK units Oral IMParameter 10 mg 2x5 mg
N = 22 healthy subjects
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Mean Olanzapine Plasma Concentrations:
One 10 mg Oral Dose vs. Two 5 mg IM Doses
Mean Data, N=22
Time (hr)
0 24 48 72 96 120
Olanza
pine Mea
n Plasm
a Conc. (ng/m
L)
0
5
10
15
20
10 mg Oral Dose2 x 5 mg IM Doses
Time (hr)
0 2 4 6 8 10 12Plasm
a Conc.
(ng/m
L)
0
5
10
15
20
Mean olanzapine plasma concentrations following administration of one 10 mg oral dose or two 5 mg IM doses, 4 hours apart
N = 22 healthy subjects
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Mean Olanzapine Plasma Concentrations:
Three 10 mg IM Doses
Time (hours)0 4 8 12 16 20 24
Ola
nza
pin
e M
ean
Pla
sma
Co
nce
ntr
atio
n (
ng
/mL
)
0
10
20
30
40
Mean plasma concentration following three 10 mg doses of IM olanzapine
N = 20 non-agitated patients
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Comparison of Cmax after IM Doses vs. Oral
Olanzapine Steady-State Concentrations
Study HGAJ Study HGJA
Daily Dose1 to 6 weeks
n = 474 in 333 pts
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Pharmacokinetic Profile of IM Olanzapine
• Fundamental PK characteristics similar to oral– Similar half-life, clearance, and volume of distribution– Follows linear pharmacokinetics
• Key difference is a more rapid rate of absorption – Higher Cmax– Tmax earlier for IM (15 to 45 min vs. 3 to 6 hours)
• Maximum IM plasma concentration comparable to oral steady-state– Maximum IM plasma concentration after three 10 mg
injections is similar to steady-state plasma concentration after oral 20 mg
• Similar metabolite profile to oral
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Efficacy and Safety of IM Olanzapine
• Pharmacokinetics
• Clinical methodology and rationale
• Efficacy results
• Safety
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Selection of Efficacy Measures for the
Assessment of Agitation
January - November 1998:
Extensive literature search - review of studies in agitation and efficacy scales
Consultation with regulatory agencies and experts
July 1998:
International Expert Advisory Panel on Agitation
Outcomes: No single "gold standard" scale; however, multiple clinically appropriate agitation scales
Core features common across agitation scales
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Core Battery of Agitation Scales
Primary Efficacy Measure:
• Positive And Negative Syndrome Scale Excited Component (PANSS EC)
Secondary Efficacy Measures:
• Agitation-Calmness Evaluation Scale (ACES)
• Corrigan Agitated Behavior Scale (CABS)
or
Cohen-Mansfield Agitation Inventory (CMAI)
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Selection of Primary Efficacy Measure:
PANSS Excited Component
• Contains the common, core features identified in extensive review of agitation scales
• Established factor of the PANSS (Kay et al. 1987)
• Validity established in agitated and non-agitated patients – Internal consistency, construct and discriminant validity,
responsiveness, reliability, reproducibility
• Applicability across different patient populations
• Rated by clinical observation not verbal response
• Rapid completion allows for frequent administration
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PANSS Excited Component: Items and Anchor DescriptionsPoor Impulse Control - Disordered regulation and control of action on
inner urges, resulting in sudden, unmodulated, arbitrary, or misdirected discharge of tension and emotions without concern about consequences.
Tension - Overt physical manifestations of fear, anxiety, and agitation, such as stiffness, tremor, profuse sweating, and restlessness.
Hostility - Verbal and nonverbal expressions of anger and resentment, including sarcasm, passive-aggressive behavior, verbal abuse, and assaultiveness.
Uncooperativeness - Active refusal to comply with the will of significant others, including the interviewer, hospital staff, or family, which may be associated with distrust, defensiveness, stubbornness, negativism, rejection of authority, hostility, or belligerence.
Excitement - Hyperactivity as reflected in accelerated motor behavior, heightened responsivity to stimuli, hypervigilance, or excessive mood liability.
Scoring: 1 = absent, 4 = moderate, 7 = extreme
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Secondary Efficacy Measure:
Agitation-Calmness Evaluation Scale (ACES)
• Developed by Lilly for use in these clinical trials
• Designed to assess the clinical levels of calmness and sedation – Allows for detection of excessive sedation
• A 9-point scale that differentiates between agitation, calm, and sleep states, with scores ranging from:
1 : Marked Agitation4 : Normal 7 : Marked Calmness9 : Unarousable
• Reliability and validity established
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Secondary Efficacy Measure:
Corrigan Agitated Behavior Scale (CABS)
• 14-item validated scale (Corrigan 1987)
• Rates the degree to which specific behaviors are observed – Degree ratings from 1 (absent) to 4 (extreme)
– Total scores range from 14 to 56
• Used in clinical trials of acute agitation across multiple disease states – e.g. schizophrenia, mania, psychoactive substance abuse,
brain injury, Alzheimer's disease (Battaglia 1997, Corrigan 1988 & 1996)
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Secondary Efficacy Measure:
Cohen-Mansfield Agitation Inventory (CMAI)
• Validated instrument designed to assess agitated behaviors in the elderly (Finkel 1992)
• Used in numerous clinical trials of dementia patient populations
• Scoring adapted for use in shortened and more frequent observation periods (Cohen-Mansfield 1989) – Behaviors assessed as absent or present (0 or 1)
– Total scores range from 0 to 30
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Criteria for Selected Patient Populations
• Agitation is a common clinical challenge
• IM medication is frequently used*
• Diverse patient characteristics
Patient Populations Selected: Schizophrenia
Bipolar Mania
Dementia
* Based on IMS Data, 1999
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Patient Populations Selected:
Diverse Clinical Characteristics
• Schizophrenia, Bipolar Mania, and Dementia encompass:
– moderate to severely agitated states
– psychotic and non-psychotic individuals
– broad age range (young adult, middle age, elderly)
– patients with and without concurrent medical conditions
– psychiatric and neurological patients
– differing underlying disease processes
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Study Designs
Four Pivotal Studies
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Agitation: 4 Pivotal StudiesStudy Agitated Patient
Population Duration IM Period
Treatment Groups
Dose (mg)
SZ-d Schizophrenia, Schizophreniform, or Schizoaffective
24 hr IM olanzapine IM haloperidol IM placebo
2.5, 5, 7.5, 10
7.5
SZ Schizophrenia, Schizophreniform, or Schizoaffective
24 hr IM olanzapine IM haloperidol IM placebo
10 7.5
BIP Bipolar, Manic, or Mixed Episode
24 hr IM olanzapine IM lorazepam IM placebo
10 2
DEM Dementia, Alzheimer’s, Vascular, or Mixed
24 hr IM olanzapine IM lorazepam IM placebo
2.5, 5 1
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Comparator Dose Selection
IM Haloperidol 7.5 mg
• 5 to 10 mg doses most commonly used
• Dose response analysis suggests that doses that exceed 7.5 – 10 mg do not appreciably increase immediate efficacy, but may cause additional side effects (Baldessarini 1998)
IM Lorazepam
• 1 mg and 2 mg doses commonly used in geriatric and non-geriatric patients, respectively
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Study Design: 4 Pivotal Studies24 Hour IM Dosing Period
Study Period I Study Period II
ScreeningPeriod
Eligible
Patients
Double-Blind Therapy Period
IM olanzapine
IM placebo
IM comparator
Screening> 2 hrs
Inj. #1
Inj. #2(if clinicallyindicated)
> 4 hrs (SZ-d, SZ)> 1 hr (BIP, DEM)
Inj. #3(if clinicallyindicated)
24 hrs
Randomization
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• Investigator judgment that the patient is clinically agitated and a clinically appropriate candidate for treatment with IM medication
and
• PANSS Excited Component total score 14 plus a score of 4 (4 = moderate) on at least 1 item using the 1-7 scoring system
Criteria for Inclusion in Agitation Study
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Other Entry Criteria
• DSM-IV criteria (schizophrenia, bipolar); DSM-IV or NINCDS-ADRDA criteria (dementia)
• Age: 18 (schizophrenia, bipolar); 55 (dementia)
• Agitation not caused by substance abuse
• No benzodiazepines within 4 hrs prior to injection 1
• No antipsychotics within 2 hrs (SZ-d, SZ) or 4 hrs (BIP, DEM) prior to injection 1
• No clinically significant ECG abnormalities that would preclude participation
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Patient Characteristics:Demographics
DemographicaSZ-d
(N=270)SZ
(N=311)BIP
(N=201)DEM
(N=272)
Age:MeanMinMax
361873
381872
391879
775497
Sex: %MaleFemale
57.442.6
65.634.4
53.246.8
39.061.0
Origin: %CaucasianAfrican descentHispanicAsianOther
65.924.1
01.58.5
72.719.05.51.01.9
72.615.96.04.01.5
92.35.91.50
0.4
a No significant differences between treatment groups within each of the four studies
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Clinical Characteristics at Baseline:Four Pivotal Studies
SZ-d Study
(N=270)
SZ Study
(N=311)
BIP Study
(N=201)
DEM Study
(N=272)
Psychosis (%)
100%
100%
52.3%
44.5%
Length of Current Admission: - < 5 days (%) - 6 – 30 days (%) - > 30 days (%)
44.2% 45.4% 10.4%
64.3% 33.3% 2.5%
84.9% 13.5% 1.7%
51.3% 20.1% 28.6%
Psychiatric Scales: (Mean scores)
- BPRS Total - Young Mania Rating Scale - Mini Mental State Exam
55.5 - -
57.0 - -
47.8 26.0
-
53.8 -
11.8
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Baseline Level of Agitation:
Mean PANSS EC Scores of 4 Pivotal Studies
PANSS Excited Componenta
Schizophrenia Dosing Study
(N=270)
Schizophrenia Study
(N=311)
Bipolar Mania Study
(N=201)
Dementia Study
(N=272)
Mean Baselineb
19.0
18.3
17.8
19.8
Upper Limit 32.0 29.0 30.0 34.0
a Total Score Range is 5 - 35; Minimum Criteria Score for inclusion: 14
b No significant differences between treatment groups for the 4 pivotal studies
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PANSS Excited Component:
Distribution of Total Scores at Baseline
0
10
20
30
40
50
60
10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34
Baseline PANSS Excited Score
Fre
qu
ency
0
10
20
30
40
50
60
10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34
Baseline PANSS Excited Score
Fre
qu
ency
0
10
20
30
40
50
60
10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34
Baseline PANSS Excited Score
Fre
qu
ency
0
10
20
30
40
50
60
10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34
Baseline PANSS Excited Score
Fre
quen
cy
Schizophrenia Dose - all patients
Dementia - all patients
Schizophrenia - all patients
Bipolar - all patients
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Baseline Agitation Across Disease States*
PANSS EC: Mean Scores of the 5 Items
* All treatment groups
0
1
2
3
4
5
Excitement Hostility Poor ImpulseControl
Tension Uncooper-ativeness
Mea
n B
asel
ine
SZ-d/SZ N=581
BIP N=199
DEM N=272
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45
Efficacy and Safety of IM Olanzapine• Pharmacokinetics
• Clinical methodology and rationale
• Efficacy results– Analyses of Primary Scale: PANSS Excited Component
• Primary Analysis • Response Rates; Efficacy at 24 hours; By-Item Analysis
– Analyses of secondary scales– Onset of efficacy– Efficacy by severity analysis– Number of injections required in 24 hours– Psychosis and Non-Psychosis
• Safety
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46
Primary Analysis: Efficacy at 2 Hours
PANSS Excited Component
Mean change from baseline to 2 hrs post first IM inj (LOCF)
-16-14-12-10-8-6-4-20246
SZ-d SZ BIP DEM
Me
an
Ch
an
ge
fro
m B
ase
line
Placebo
IMOlz 2.5
IMOlz 5.0
IMOlz 7.5
IMOlz 10
IMHal 7.5
IMLzp
* p < 0.05 vs. placebo† p < 0.05 vs. lzp
*
* **
* **
** *
†
*
Baseline Means:
19.0 18.3 17.8 19.8
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47
Response RatesPANSS Excited Component - 2 Hours After First Injection
0
10
20
30
40
50
60
70
80
90
SZ-d SZ BIP DEM
Per
cen
tag
e o
f P
atie
nts
Placebo
IMOlz 2.5
IMOlz 5
IMOlz 7.5
IMOlz 10
IMHal 7.5
IMLzp
40% decrease in PANSS Excited Component from Baseline to 2 hours post first IM injection
* p < 0.05 vs. placebo for all
*
*
*
*
*
**
*
**
**
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Efficacy at 24 Hours:PANSS Excited Component
Mean change from baseline to 24 hrs (LOCF)
-8
-7
-6
-5
-4
-3
-2
-1
0
SZ-d SZ BIP DEM
Mea
n C
han
ge
fro
m B
asel
ine
Placebo
IMOlz 2.5
IMOlz 5
IMOlz 7.5
IMOlz 10
IMHal 7.5
IMLzp
* p < 0.05 vs. placebo
* *
*
* **
**
*
Baseline Means: 19.0 18.3 17.8 19.8
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PANSS EC By-Item Analysis: 2 Hours (LOCF)
Significant Contribution of All 5 Items: 5-10 mg Olz vs. Placebo
* p<0.05 vs. placebo
-6
-5
-4
-3
-2
-1
0
1
2
Poor ImpulseControl
Tension Hostility Uncooper-ativeness
Excitement
Mea
n Ch
ange
from
Bas
elin
e
Placebo
IMOlz 10
IMLzp
**
**
**
-6
-5
-4
-3
-2
-1
0
1
2
Poor ImpulseControl
Tension Hostility Uncooper-ativeness
Excitement
Mea
n Ch
ange
from
Bas
elin
e
PlaceboIMOlz 2.5IMOlz 5.0IMOlz 7.5IMOlz 10IMHal
* **
** * **
*
***
*
***
*
**
** *
*
*
Schizophrenia Dose
Bipolar
-6
-5
-4
-3
-2
-1
0
1
2
Poor ImpulseControl
Tension Hostility Uncooper-ativeness
Excitement
Mea
n Ch
ange
from
Bas
elin
e
Placebo
IMOlz 10
IMHal
-6
-5
-4
-3
-2
-1
0
1
2
Poor ImpulseControl
Tension Hostility Uncooper-ativeness
Excitement
Mea
n Ch
ange
from
Bas
elin
ePlacebo
IMOlz 2.5
IMOlz 5.0
IMLzp
******* * ** *
Schizophrenia
Dementia
* ** *
* * * ** *
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Efficacy at 2 Hours:
Agitation-Calmness Evaluation Scale
Mean Value at Endpoint - 2 hours (LOCF)
1 Marked Agit.
2Mod. Agit.
3 Mild Agit.
4Normal
5 Mild Calm
6 Mod. Calm
SZ-d SZ BIP DEM
Placebo
IMOlz 2.5
IMOlz 5
IMOlz 7.5
IMOlz 10
IMHal 7.5
IMLzp
Baseline Mean: 2.3 2.5 2.3 2.2* p < 0.05 vs placebo for mean change† p < 0.05 vs hal (SZ-d) or lzp (BIP) for mean change4546.01
** *
*
*
**
*
** *
††
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Efficacy in Agitation at 2 Hours:
Corrigan / Cohen-Mansfield
Mean change from baseline to 2 hours post first IM inj (LOCF)
-12
-10
-8
-6
-4
-2
0
2
4
SZ-d SZ BIP DEM
Me
an
Ch
an
ge
fro
m B
ase
line
Placebo
IMOlz 2.5
IMOlz 5.0
IMOlz 7.5
IMOlz 10
IMHal 7.5
IMLzp
*
* p < 0.05 vs. placebo† p < 0.05 vs. hal (SZ-d) or lzp (BIP)
*
*†
*†
* *
*
*
* *
*
†
CABS Range: 14-56CMAI Range: 0-30
Baseline Means:
30.5 27.5 28.3 7.0
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-9
-8
-7
-6
-5
-4
-3
-2
-1
0
0 15 30 45 60 75 90 105 120
Placebo
IM Olz
IM Hal
Me
an
C
ha
ng
e
Time (mins)
* p < 0.05 vs. Placebo† p < 0.05 vs. Haloperidol
*
*
** * *
*
**
*
*†
†
†
Onset of Efficacy: PANSS ECSchizophrenia Study
Timepoint-wise change from baseline to 2 hrs post first IM inj (LOCF)
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Efficacy at 2 Hrs by Baseline Severity:
Schizophrenia Study
-10
-8
-6
-4
-2
0
Me
an
Ch
an
ge
in
PE
C
Placebo
IMOlz 10
IMHal 7.5
Score < Average (18) Score Average (18)
-10
-8
-6
-4
-2
0
Me
an
Ch
an
ge
in
PE
C
Placebo
IMOlz 10
IMHal 7.5
* p < 0.05 vs. placebo
Efficacy comparison based on mean split of baseline PEC
* *
* *
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Number of IM Injections During 24 Hours: Schizophrenia Dose Ranging Study
0%
20%
40%
60%
80%
100%
Placebo IMOlz2.5mg
IMOlz5mg
IMOlz7.5mg
IMOlz 10mg
IMHal7.5mg
Per
cen
tag
e o
f P
atie
nts
3 Inj
2 Inj
1 Inj
* p < 0.05 vs. placebo
* * * * *
Maximum of three injections allowed during 24 hours in each trial.Investigator judgment determined the administration of a second or third injection.
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Efficacy Assessed by Presence of
Psychosis Comparison at 2 Hours: Bipolar Study
PANSS EC: Mean change from baseline (LOCF)
-12
-10
-8
-6
-4
-2
0
Mean Change
Placebo n=24
IMOlz 10 n=52
IMLzp n=28
-12
-10
-8
-6
-4
-2
0
Mean Change
Placebo n=26
IMOlz 10 n=46
IMLzp n=23
Non-Psychotic(N=95)
Psychotic(N=104)
* p < 0.05 vs. placebo
*
*
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Efficacy Assessed by Presence of
Psychosis Comparison at 2 Hrs: Dementia Study
-10
-8
-6
-4
-2
0
Mean Change
Placebo n=23
IMOlz 2.5 n=36
IMOlz 5.0 n=30
IMLzp n=28
Psychotic(N=146)
Non-Psychotic (N=117)
-10
-8
-6
-4
-2
0
Mean Change
Placebo n=40
IMOlz 2.5 n=35
IMOlz 5.0 n=32
IMLzp n=39
* p < 0.05 vs. placebo
**
*
PANSS EC: Mean change from baseline (LOCF)
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Efficacy and Safety of IM Olanzapine
• Pharmacokinetics
• Clinical methodology and rationale
• Efficacy results
• Safety– Treatment-Emergent Adverse Events
– Sedation
– Laboratory Analyses
– Vital Signs
– Electrocardiograms
– Extrapyramidal Symptoms
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Summary of Safety Databases
• Placebo-Controlled
(SZ-d, SZ, BIP)
Olanzapine: N = 415
Placebo: N = 150
• Haloperidol-Controlled
(SZ-d, SZ)
Olanzapine: N = 316
Haloperidol: N = 166
• Geriatric Placebo-Controlled
(DEM)
Olanzapine: N = 137
Placebo: N = 67
• Overall Patient Database
(All agitated patients)
Olanzapine: N = 722
• Overall Subject Database
(All patients and healthy subjects)
Olanzapine: N = 850
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Adverse Events
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Adverse Events: Overall Patient Database
Discontinuations and Serious Adverse Events
Discontinuations:
• Only 0.7% (5 / 722) of IM olanzapine-treated patients discontinued due to an adverse event
Serious Adverse Events:
• Only 0.4% (3 / 722) IM olanzapine-treated patients experienced an adverse event that met criteria for "serious" during the study– Anxiety (also led to study discontinuation)
– Abnormal ECG and anemia (both present at baseline)
– Tachycardia (discontinued due to agitation; received lorazepam and haloperidol; developed tachycardia)
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Adverse Events: 24 Hour IM Period
Placebo-Controlled Database
Treatment-emergent adverse events reported by at least 1% of patients and with an incidence greater than placebo
Percentage of Patients With Event
Adverse Event OlanzapineN=415
PlaceboN=150
Somnolence 6 3
Dizziness 4 2
Asthenia 2 1
Hypotension 2 0
Postural Hypotension 1 0
Tremor 1 0
N.S.D. between olz and placebo for any event
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Adverse Events: 24 Hour IM Period
Geriatric Placebo-Controlled DatabaseTreatment-emergent adverse events reported by at least 1% of patients and with an incidence greater than placebo
Percentage of Patients With Event
Adverse Event Olanzapine N=137
Placebo N=67
Somnolence 4 3 Headache 3 0 Accidental Injury 2 0 Dizziness 2 0 Tachycardia 1 0
Tremor 1 0 Vasodilation 1 0
Vomiting 1 0
N.S.D. between olz and placebo for any event
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Adverse Events: Summary
Olanzapine vs. Haloperidol and Lorazepam
• IM haloperidol > IM olanzapine (p<0.05) for: – acute dystonia – dyspepsia
– extrapyramidal syndrome – amblyopia
• IM lorazepam > IM olanzapine (p<0.05) for: – nausea
– vomiting
• No adverse event significantly more frequent for IM olanzapine vs. IM haloperidol or IM lorazepam
• No injection site reactions for IM olanzapine other than pain, including allergic reactions – Pain only reported in 0.5% of IM olanzapine-treated patients
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Sedation
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Sedation Assessed Using:
Agitation-Calmness Evaluation Scale
ACES score of 8 (deep sleep) or 9 (unarousable) used as indicators of excessive sedation
– No IM olanzapine-treated patient scored a 9 at any time
– Only 5.1% (28 / 551) of IM olanzapine-treated patients scored an 8 at any time
– No significant difference between IM olanzapine and either comparator (haloperidol, lorazepam) in the incidence of 8 or 9
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Sedation Assessed Using:
Treatment-Emergent Adverse Events
• "Somnolence" was the only reported sedation-related adverse event – No reports of "CNS depression," "stupor," or "coma"
• Somnolence was reported in 5.1% (28 / 552) ofIM olanzapine-treated patients
• No significant difference between IM olanzapine and any other treatment group (including placebo) in the incidence of somnolence.
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Laboratory Analyses
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Laboratory Results:
Schizophrenia, Bipolar, and Dementia Studies
• Standard laboratory tests:
– Clinical chemistry
– Hematology
– Urinalysis
• Only one statistically significant difference between olanzapine and placebo treatment groups:
– mean cell hemoglobin (decreased in DEM placebo group)
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Vital Signs
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Vital Signs
• Bradycardia observed with olanzapine
– Greater incidence and magnitude in healthy subjects vs. patients
– Usually associated with hypotension
– 3 healthy subjects (2 IM and 1 oral) with sinus pauses
– Proposed mechanism: vasovagal response
• Vital Signs in IM Trials
• Cardiology Consultants for Q&A
– Arthur J. Moss, MD
– William J. Groh, MD
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Bradycardia Bradycardia Bradycardia w/ Hypotension
n % n %
• Heart rate determined by palpation – 21.0 (mean) times per subject– 2.4 (mean) vital signs meeting criteria for bradycardia
*Includes agitated patients (N = 722) and non-agitated patients (N = 43)
Healthy Subjects (N = 85) 28 32.9 19 22.4
Patients(N = 765*) 36 4.7 21 2.7
Total (N = 850) 64 7.5 40 4.7
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Sinus Pauses• 3 Healthy subjects:
• 26 yr old Male - 10 mg Oral Olz• 55 yr old Male - 5 mg IM Olz• 47 yr old Male - 5 mg IM Olz
– Sinus pauses
• up to 6 seconds• associated with hypotension• preceded by sinus bradycardia• self-terminating, followed by return to sinus rhythm
• Sinus pauses in patients: 0/765 (0%)• minimum of three 12-lead ECGs with rhythm strips for all patients
• Syncope in patients: 2/765 (0.3%)
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Bradycardia Proposed Mechanism: Vasovagal
Response (i.e., Neurally Mediated Reflex Bradycardia) • Olanzapine associated with hypotension
1 antagonism (Ki=19 nM) decrease BP
• Bradycardia associated with hypotension– Supported by clinical & animal data
– ~ 10% of general population will have bradycardia in response to decrements in BP (Kapoor 1999)
• Greater in healthy subjects: Possible Explanation – Increased vagal tone
– No baseline agitation (agitation vagal tone)
– Not taking 1 blocking agents at baseline (e.g., antipsychotics)
• Outcome– Self-terminating
– Transient; more marked early vs. later in treatment (rapid tachyphylaxis)
– Management if symptomatic: recumbency
– Usually benign
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Vital Signs: Change to Value Outside
Reference Range - Any Time During 24 Hrs
Placebo-Controlled Database
0
2
4
6
8
10
12
LowSupineSystolic
LowSupine
Diastolic
LowSupinePulse
LowStandingSystolic
LowStandingDiastolic
HighStanding
Pulse
OrthoDrop
Perc
en
tag
e o
f P
ati
en
ts
Placebo IMOlz
* p < 0.05 vs. placebo
*
*
*
Basal / Resting Positional Challenge
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Vital Signs: Change to Value Outside
Reference Range - Any Time During 24 Hrs
Haloperidol-Controlled Database
0
2
4
6
8
10
12
LowSupineSystolic
LowSupine
Diastolic
LowSupinePulse
LowStandingSystolic
LowStandingDiastolic
HighStanding
Pulse
OrthoDrop
Pe
rce
nta
ge
of
Pa
tie
nts
IMOlz IMHal
* p < 0.05 vs. Olz
*
Basal / Resting Positional Challenge
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Vital Signs: Change to Value Outside
Reference Range – Any Time During 24 Hrs
Geriatric Placebo-Controlled Database
0
2
4
6
8
10
12
14
LowSupineSystolic
LowSupine
Diastolic
LowSupinePulse
LowStandingSystolic
LowStandingDiastolic
HighStanding
Pulse
OrthoDrop
Pe
rce
nta
ge
of
Pa
tie
nts
Placebo IMOlz 2.5 IMOlz 5
: n = 0N.S.D. between Olz and Pla on any measure
Basal / Resting Positional Challenge
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Incidence of Treatment-Emergent Dizziness
and Syncope: Data from IM and Oral Studies
OlzN=415
PlaN=150
OlzN=316
HalN=166Event
Classification n % n % n % n %
Dizziness 17 4.1% 3 2.0% 8 2.5% 3 1.8%
Syncope 1 0.2% 0 0% 0 0% 0 0%
Intramuscular Data
Olz N=882
Pla N=517
Olz N=2213
Hal N=1240
Event Classification n % n % n % n %
Dizziness 62 7.0%* 20 3.9% 140 6.3% 65 5.2%
Syncope 6 0.7% 3 0.6% 11 0.5% 3 0.2%
Oral Dataa
aOral olanzapine clinical trial database: Phase 2, 3, and 4 placebo-controlled / haloperidol-controlled oral olanzapine studies
N.S.D. between treatment groups
*p < 0.05 vs. placebo
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Electrocardiograms
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QTc Intervals: 2 Hours Post-Injection
Placebo-Controlled Database
0
1
2
3
4
5
6
7
8
9
10
Per
cen
tag
e o
f P
atie
nts
Placebo
IMOlz
500 msec
N.S.D. on any measure vs. placebo
Mean Change in QTc (msec) at 2 hrsIM Pla IM Olz
(N = 148) (N = 408)Mean change -0.7 -3.0SD 22.0 21.5p-value vs. pla -- 0.199
99 Percentile 97.5 Percentile
99 Percentile: 450 msec male 470 msec female
97.5 Percentile: 430 msec male 450 msec female
: n = 0
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QTc Intervals: 2 Hours Post-Injection
Haloperidol-Controlled Database
0
1
2
3
4
5
6
7
8
9
10
Per
cen
tag
e o
f P
atie
nts
IMOlz
IMHal
500 msec
N.S.D. on any measure vs. placebo
Mean Change in QTc (msec) at 2 hrsIM Olz IM Hal
(N = 312) (N = 164)Mean change -3.3 1.8SD 21.7 24.0p-value vs. hal 0.006 --
97.5 Percentile 99 Percentile
99 Percentile: 450 msec male 470 msec female
97.5 Percentile: 430 msec male 450 msec female
: n = 0
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Dementia Study: Age and Co-Morbid Conditions • Advanced age of population:
• 45.2% of patients > 80 years; 8.8% > 90 years
• Cardiac / Respiratory ConditionsCondition Percent of Patients
Coronary artery disorder 32.0Cerebrovascular / Peripheral vascular dis. 12.9Congestive heart failure 12.9Diabetes 11.4Electrocardiographic disorder 10.7Hypercholesterolemia 6.3Hypertension 41.2Hypothyroidism 13.6Respiratory disorder 13.2Right / Left Bundle Branch Block 8.1 / 3.7Pacemakers 2.2
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Original QTc Data*: Dementia Study Mean Change from Baseline to 2 Hours
Baseline Endpoint Change
Treatment
N Mean**
(msec) Mean (msec)
Mean (msec)
p-value for change vs. pla
IM Olanzapine 2.5 mg
69
430.3
426.3
-4.0
0.171
IM Olanzapine 5.0 mg 61 419.0 428.0 9.0 0.214
IM Lorazepam 64 432.1 431.0 -1.2 0.493
IM Placebo 62 432.6 435.1 2.5 --
* Bazett formula used to calculate QTc
** Baseline QTc in IM Olz 5 mg treatment group significantly lower than all other treatment groups (p < 0.05)
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ECG Data from Dementia Study:
Decision for Re-Read
• Consultation with external cardiologists– Random review of ECG tracings - discrepancies noted
– Original guidelines required measurements of Lead II
– These guidelines questioned because:• advanced age of patient population• significant medical co-morbidity at baseline• non-specific, low-amplitude T waves and baseline noise
• Recommendation:– Blindly re-read all ECGs using 2 independent ECG Core Labs
– Revised measurement guidelines:• Average of 3 leads: Leads II, avF, and V5• Hierarchical algorithm of alternative leads if primary leads
unsuitable
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Re-Read QTc Data*: Dementia Study Mean Change from Baseline to 2 Hours
Baseline Endpoint Change
Treatment NMean**
(msec)Mean(msec)
Mean(msec)
p-value forchange vs. pla
IM Olanzapine 2.5 mg 68 436.9 432.4 -4.5 0.044
IM Olanzapine 5.0 mg 61 430.5 433.5 3.1 0.936
IM Lorazepam 63 437.4 431.2 -6.2 0.019
IM Placebo 61 436.2 439.5 3.3 --
* Re-Read Data = all interval measurements from the 2 ECG Core Labs were averaged for final reported values, Bazett formula used to calculate QTc
** No significant differences in mean QTc values at baseline
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0
5
10
15
20
25
30
Per
cen
tag
e o
f P
atie
nts
Placebo
IMOlz 2.5
IMOlz 5
500 msec
* p < 0.05 vs. placebo
Mean Change in QTc (msec) at 2 hrsIM Pla IM Olz2.5 IM Olz5
(N = 61) (N = 68) (N = 61)
Mean change 3.3 -4.5 3.1SD 21.1 22.0 24.6p-value vs. pla -- 0.044 0.936
99 Percentile 97.5 Percentile
*
99 Percentile: 450 msec male 470 msec female
97.5 Percentile: 430 msec male 450 msec female
QTc Intervals: 2 Hours Post-Injection
Geriatric Placebo-Controlled Database
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Comparison of Cmax after IM Doses vs. Oral
Olanzapine Steady-State Concentrations
Study HGAJ Study HGJA
Daily Dose1 to 6 weeks
n = 474 in 333 pts
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QTc Intervals: Normal to Prolonged
6-week Oral Study in Schizophrenia
0
0.2
0.4
0.6
0.8
1
1.2
1.4
Per
cen
tag
e o
f P
atie
nts
Oral 5 mg
Oral 10 mg
Oral 15 mg
Oral 20 mg
500 msec
97.5 Percentile 99 Percentile
99 Percentile: 450 msec male 470 msec female
97.5 Percentile: 430 msec male 450 msec female
Study HGAJ: Mean Change in QTc (msec)
Oral 5 mg Oral 10 mg Oral 15mg Oral 20 mg (N=117) (N=150) (N=175) (N=309)
Mean Change 1.632 -0.717 1.244 -0.074SD 46.3 35.3 30.0 26.1
Patients who were on the specified dose for at least 5 days prior to the ECG
: n = 0
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Summary of ECG Data:Interval Data and Descriptive Findings
• No clinically significant findings for any ECG intervals – mean change from baseline to endpoint
– categorical changes
• No clinically significant changes for descriptive findings – e.g. rhythm, morphology
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Extrapyramidal Symptoms
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Extrapyramidal Symptoms: Schizophrenia Dose Ranging Study
Mean change from baseline to 24 hrs post first IM inj (LOCF)
* p < 0.05 vs. pla
† p < 0.05 vs. hal
-0.07
-0.31
-0.06
-0.77
-0.07
-0.89
-0.11
-0.46
-0.11
-0.89
0.15
0.58
-1
-0.8
-0.6
-0.4
-0.2
0
0.2
0.4
0.6
0.8
Barnes Global Score Simpson-Angus Total
Mea
n C
han
ge
fro
m B
asel
ine
Placebo
IMOlz 2.5
IMOlz 5
IMOlz 7.5
IMOlz 10
IMHal 7.5
*
*
† † † †
†
†
†
†
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Extrapyramidal Symptoms: Schizophrenia Study
Mean change from baseline to 24 hrs post first IM inj (LOCF)
-0.08
-1.19
-0.27
-0.61
0.01
0.7
-1.5
-1
-0.5
0
0.5
1
Barnes Global Score Simpson-Angus Total
Mea
n C
hang
e fr
om B
asel
ine
Placebo
IMOlz 10
IMHal 7.5
†
*
†
* p < 0.05 vs. pla
† p < 0.05 vs. hal
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Extrapyramidal Symptoms: Bipolar Mania Study
Mean change from baseline to 24 hrs post first IM inj (LOCF)
-0.26-0.23
-0.49
-0.61
-0.39
0.0
-0.7
-0.6
-0.5
-0.4
-0.3
-0.2
-0.1
0
Barnes Global Score Simpson-Angus Total
Mea
n C
han
ge
fro
m B
asel
ine
Placebo
IMOlz 10
IMLzp
N.S.D. between treatment groups at any measure
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Extrapyramidal Symptoms: Dementia Study
Mean change from baseline to 24 hrs post first inj (LOCF)
-0.18
-0.37
-0.25
-0.20
-0.7
-0.6
-0.5
-0.4
-0.3
-0.2
-0.1
0
Simpson-Angus Total
Mea
n C
han
ge
fro
m B
asel
ine
Placebo
IMOlz 2.5
IMOlz 5
IMLzp
N.S.D. between any measure vs. placebo
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Conclusions: Efficacy of IM Olanzapine
The efficacy of IM olanzapine in the treatment of agitation was established in all 4 pivotal studies:
• IM olanzapine was superior to placebo in the primary efficacy analysis for all doses studied (2.5 to 10 mg)
• Secondary efficacy measures yielded similar results
• The majority of IM olanzapine-treated patients required only 1 injection in 24 hours
• IM olanzapine, doses 5-10 mg, demonstrated efficacy 15 to 30 minutes after the first injection
• IM olanzapine was effective in patients with and without psychosis
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Conclusions: Safety of IM Olanzapine
IM olanzapine was safe and well tolerated:
• Incidence of EPS similar to placebo; no cases of acute dystonia
• No clinically significant changes in laboratory analytes or ECG data, including QTc intervals
• Not associated with adverse effects on vital signs except for mild and transient decrements in blood pressure and heart rate
• Not associated with excessive or undesirable sedation
• Favorable adverse event profile
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