(paliperidone palmitate)
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Last Updated: 04/17/2024
Please refer to the following sections of the Full Prescribing Information1 which are relevant to your inquiry: BOXED WARNING, CONTRAINDICATIONS, WARNINGS AND PRECAUTIONS, and ADVERSE REACTIONS.
Increased Mortality in Elderly Patients with Dementia-Related Psychosis1
-Elderly patients with dementia-related psychosis treated with antipsychotic drugs are at an increased risk of death.
-INVEGA TRINZA is not approved for use in patients with dementia-related psychosis.
INVEGA TRINZA is contraindicated in patients with a known hypersensitivity to either paliperidone or risperidone, or to any of the excipients in the INVEGA TRINZA formulation. Hypersensitivity reactions, including anaphylactic reactions and angioedema, have been observed in patients treated with risperidone and paliperidone. Paliperidone palmitate is converted to paliperidone, which is a metabolite of risperidone.1
Please refer to the Full Prescribing Information for detailed information regarding the Boxed Warning and Warnings and Precautions for INVEGA TRINZA.
An examination of population subgroups in the long-term maintenance trial did not reveal any evidence of differences in safety on the basis of age, gender, or race alone; however, there were few subjects 65 years of age and older.1
The long-term maintenance trial was not designed to assess dose response with regard to safety and tolerability across the dose range of INVEGA TRINZA. All subjects were required to complete the OL transition phase on a specific dose of PP1M prior to converting to a corresponding dose of INVEGA TRINZA in the DB phase. Therefore, determining a differential effect of INVEGA TRINZA dose level may be confounded by the subjects' tolerability to a given dose of PP1M during the transition phase. However, post-hoc analyses of safety by optimized INVEGA TRINZA dose level in the DB phase did not suggest a dose effect on rates of EPS-related adverse events, changes in body weight or body mass index (BMI), or investigator or subject ratings of local injection site reactions.2
Data from the long-term maintenance trial provided information regarding EPS. Several methods were used to measure EPS: (1) the Simpson-Angus global score which broadly evaluates parkinsonism, (2) the Barnes Akathisia Rating Scale global clinical rating score which evaluates akathisia, (3) the Abnormal Involuntary Movement Scale scores which evaluate dyskinesia, and (4) use of anticholinergic medications to treat EPS (Table: Extrapyramidal Symptoms [EPS] Assessed by Incidence of Rating Scales and Use of Anticholinergic Medication), and (5) incidence of spontaneous reports of EPS (Table: Extrapyramidal Symptoms [EPS]-Related Events by MedDRA Preferred Term).1
Percentage of Subjects | |||
---|---|---|---|
Open-label Phase | Double-blind Phase | ||
Paliperidone Palmitatea | Placebo (N=145) % | INVEGA TRINZA (N=160) % | |
Parkinsonismb | 6 | 3 | 6 |
Akathisiac | 3 | 1 | 4 |
Dyskinesiad | 1 | 3 | 3 |
Use of Anticholinergic Medicationse | 11 | 9 | 11 |
Abbreviations: EPS, extrapyramidal symptoms. aDuring the open-label phase, subjects received several doses of PP1M followed by a single dose of PP3M. bFor Parkinsonism, percent of subjects with Simpson-Angus Total score >0.3 at any time (Global score defined as total sum of items score divided by the number of items). cFor Akathisia, percent of subjects with Barnes Akathisia Rating Scale global score ≥2 at any time. dFor Dyskinesia, percent of subjects with a score ≥3 on any of the first 7 items or a score ≥2 on two or more of any of the first 7 items of the Abnormal Involuntary Movement Scale at any time. ePercent of subjects who received anticholinergic medications to treat EPS. |
Percentage of Subjects | |||
---|---|---|---|
Open-label Phase | Double-blind Phase | ||
Paliperidone Palmitatea (N=506) % | Placebo (N=145) % | INVEGA TRINZA (N=160) % | |
Overall percentage of subjects with EPS-related adverse events | 10 | 3 | 8 |
Parkinsonismb | 4 | 0 | 4 |
Hyperkinesiac | 5 | 2 | 5 |
Tremor | 2 | 0 | 1 |
Dyskinesia | <1 | 1 | 1 |
Dystoniad | 1 | 0 | 1 |
Abbreviations: EPS, extrapyramidal symptoms. aDuring the open-label phase, subjects received several doses of PP1M followed by a single dose of PP3M. bParkinsonism group includes: cogwheel rigidity, drooling, extrapyramidal disorder, hypokinesia, muscle rigidity, muscle tightness, musculoskeletal stiffness, parkinsonism. cHyperkinesia group includes: akathisia, restlessness. dDystonia group includes: blepharospasm, dystonia, muscle spasms. |
After injection of INVEGA TRINZA in the OL phase, 12 (3.2%) subjects had EPS that were new or worsened in severity, with events under the groupings of hyperkinesia (1.6%) and parkinsonism (1.3%) being the most common. After injection of INVEGA TRINZA in the OL or DB phases; one subject discontinued from the OL phase due to restlessness.1
An examination of the time to EPS during the DB phase showed no clustering of these events at visits that would be expected to correspond to median peak plasma concentrations of paliperidone for subjects randomized to INVEGA TRINZA.1
Symptoms of dystonia, prolonged abnormal contractions of muscle groups, may occur in susceptible individuals during the first few days of treatment. Dystonic symptoms include: spasm of the neck muscles, sometimes progressing to tightness of the throat, swallowing difficulty, difficulty breathing, and/or protrusion of the tongue. While these symptoms can occur at low doses, they occur more frequently and with greater severity with high potency and at higher doses of first-generation antipsychotic drugs. An elevated risk of acute dystonia is observed in males and younger age groups.1
Investigator ratings of injection site: Redness and swelling were observed in 2% or less of subjects in the INVEGA TRINZA and placebo groups during the DB phase of the long-term maintenance study and were rated mild based on investigator ratings using a 4-point scale (0=absent; 1=mild; 2=moderate; 3=severe). There were no reports of induration in either group during the DB phase, and no subjects discontinued due to INVEGA TRINZA injection.1
Subject ratings of injection-site pain: Subject evaluations of injection pain during the DB phase also were similar for placebo and INVEGA TRINZA.1
Subject ratings of injection site pain in the single-dose Phase 1 study allowed for assessment of the temporal course of injection site pain. Residual injection pain peaked 1 or 6 hours after injection and trended downward 3 days after the injection. Deltoid injections were numerically more painful than gluteal injections, although most pain ratings were below 10 mm on a 100-mm scale.1
Please refer to the Full Prescribing Information for information regarding adverse reactions reported in clinical trials and postmarketing experience with PP1M and oral paliperidone.
1 | INVEGA TRINZA (paliperidone palmitate) extended-release injectable suspension [Prescribing Information]. Titusville, NJ: Janssen Pharmaceuticals, Inc; https://www.janssenlabels.com/package-insert/product-monograph/prescribing-information/INVEGA+TRINZA-pi.pdf. |
2 |