Publications by authors named "Peter Weiden"

Article Synopsis
  • Aripiprazole lauroxil (AL) is a long-acting injectable antipsychotic that can be initiated using either a 1-day or 21-day regimen, and this study analyzed their safety and tolerability.
  • The post hoc analysis showed comparable adverse event rates between both regimens, with most events being mild, although some specific side effects (like injection site reactions and akathisia) were noted.
  • The findings indicate that both initiation approaches are similarly safe, suggesting the importance of involving patients in selecting their treatment plan for schizophrenia.
View Article and Find Full Text PDF
Article Synopsis
  • - KarXT, a combination of xanomeline and trospium, showed effectiveness and tolerability in treating schizophrenia in the EMERGENT-1 study, hitting its primary and secondary goals while being well tolerated overall.
  • - The study involved 179 patients who either received KarXT or a placebo, revealing that the majority of side effects (like nausea and dry mouth) were mild and temporary, with no participants dropping out due to these issues.
  • - Additionally, KarXT did not significantly affect body weight, metabolic parameters, or vital signs, confirming its safety profile in relation to the muscarinic activity of its components.
View Article and Find Full Text PDF
Article Synopsis
  • Interest in muscarinic acetylcholine receptor (mAChR) activators for schizophrenia surged in the 1990s due to xanomeline, an agonist initially developed for Alzheimer’s, showing unexpected antipsychotic effects.
  • During that time, there were challenges in managing tolerability issues linked to the activation of peripheral mAChRs.
  • Recent advancements in targeted ligands and combination treatments have improved the feasibility of mAChR activators as promising therapies for schizophrenia, with ongoing clinical development efforts.
View Article and Find Full Text PDF

Background: Impaired insight poses a challenge in the treatment of patients with schizophrenia because of its potential to jeopardize therapeutic engagement and medication adherence. This study explored how insight impairment, graded from none to extreme, is related to patient-reported mental health status, depression, and neurocognition in schizophrenia.

Methods: In a post hoc analysis of the Clinical Antipsychotic Trials of Intervention Effectiveness (CATIE) study (NCT00014001), insight was measured using the Positive and Negative Syndrome Scale (PANSS) Item G12 (lack of insight).

View Article and Find Full Text PDF
Article Synopsis
  • The study evaluated the effectiveness of the oral medication KarXT (xanomeline-trospium) in treating schizophrenia by analyzing response rates using the Positive and Negative Syndrome Scale (PANSS) over a 5-week period.
  • A significant number of patients treated with KarXT showed improvements above the placebo group at various thresholds for symptom reduction, with early response noted as soon as two weeks into treatment.
  • The analysis highlighted that KarXT not only had a higher percentage of responders compared to placebo but also demonstrated consistent benefits across various symptom domains throughout the treatment period.
View Article and Find Full Text PDF

Handwriting kinematics (HWKs) were assessed in the randomized controlled ALPINE study of 2 long-acting injectable antipsychotics started during an acute exacerbation of schizophrenia. This exploratory analysis examined the relationship between baseline HWKs and response to acute antipsychotic treatment. Adults with acute schizophrenia were assigned to aripiprazole lauroxil or paliperidone palmitate (groups combined for this analysis).

View Article and Find Full Text PDF

Background: A randomized, controlled, phase 3b study (ALPINE) evaluated efficacy and safety of a 2-month formulation of aripiprazole lauroxil (AL) using a 1-day initiation regimen in patients hospitalized for an acute exacerbation of schizophrenia. Paliperidone palmitate (PP) was used as an active control. Exploratory endpoint assessments included severity of illness, positive and negative symptoms, quality of life, caregiver burden, and satisfaction with medication.

View Article and Find Full Text PDF

Background: Continuous antipsychotic therapy is recommended as part of long-term maintenance treatment of schizophrenia, and gaps in antipsychotic treatment have been associated with increased risks of relapse and rehospitalization. Because the use of long-acting injectable (LAI) antipsychotics may reduce the likelihood of undetected medication gaps, initiating an LAI medication may affect resource utilization and costs. The LAI aripiprazole lauroxil (AL) was approved in the United States (US) in 2015 for the treatment of schizophrenia in adults.

View Article and Find Full Text PDF

Background: This post hoc analysis of clinical trial data evaluated long-term, self-reported mental and physical health-related quality of life (HRQoL) scores in schizophrenia patients receiving aripiprazole lauroxil (AL), an atypical long-acting injectable (LAI) antipsychotic approved for the treatment of schizophrenia in adults.

Methods: The study population included 291 stable schizophrenia outpatients enrolled in 2 consecutive long-term safety studies of AL given every 4 weeks for up to 124 weeks. HRQoL was measured using the SF-36v2® Health Survey (SF-36v2) over the course of the follow-up.

View Article and Find Full Text PDF

Aripiprazole lauroxil (AL) is a long-acting atypical antipsychotic approved for the treatment of schizophrenia in adults. AL has five regimen options that offer three different injection intervals using four different dosage strengths. The relationship between dosage strength (milligram injected), injection interval (time between injection visits), and expected steady-state plasma aripiprazole concentrations may not be readily apparent.

View Article and Find Full Text PDF

Background: This survey examined the experiences of people living with schizophrenia who have used oral antipsychotics (APs).

Methods: Adults with self-reported physician-diagnosed schizophrenia (N=200), who were members of an online research participation panel and reported taking one or more oral APs within the last year, completed a cross-sectional online survey that focused on direct report of their experiences regarding APs (eg, symptoms, side effects, adherence). Descriptive analyses were conducted for the total survey sample and for subgroups defined a priori by experience with specific, prevalent side effects.

View Article and Find Full Text PDF

Objective: To describe the long-term safety, tolerability, and symptom trajectory with the long-acting injectable antipsychotic aripiprazole lauroxil (AL) in patients with DSM-5-diagnosed schizophrenia followed for up to 180 weeks (3.5 years).

Methods: Long-term safety of 2 fixed doses of AL (441 or 882 mg every 4 weeks) was assessed during up to 180 weeks (3.

View Article and Find Full Text PDF

Background: Oral antipsychotic (AP) medications are frequently prescribed to people with bipolar I disorder (BD-I). A cross-sectional online survey examined the experiences of people living with BD-I with a history of recent AP use.

Methods: Adults with self-reported physician-diagnosed BD-I (N = 200) who received oral APs during the prior year completed a survey on AP-related experiences, including side effects and their perceived burden on social functioning, adherence, and work.

View Article and Find Full Text PDF
Article Synopsis
  • Aripiprazole lauroxil (AL) is a long-acting injectable used to treat schizophrenia in adults, with various approved dosing options, including a new 1064 mg dose every 2 months.
  • A study aimed to compare the pharmacokinetics, safety, and tolerability of the 1064 mg (every 2 months) regimen against two other regimens (882 mg every 6 weeks and 441 mg every 4 weeks) over 44 weeks.
  • Results showed that all dosing regimens maintained consistent aripiprazole exposure, with the 1064 mg every 2 months regimen demonstrating similar plasma concentration levels to the other dosing options.
View Article and Find Full Text PDF

Objective: Evaluate efficacy and safety of a 2-month formulation of aripiprazole lauroxil (AL) with 1-day initiation during hospitalization for acute exacerbation of schizophrenia followed by transition to outpatient care.

Methods: The phase 3b double-blind Aripiprazole Lauroxil and Paliperidone palmitate: INitiation Effectiveness (ALPINE) study was conducted from November 2017 to March 2019. Adults with acute schizophrenia according to DSM-5 criteria were randomized (1:1) to AL (AL NanoCrystal Dispersion + oral aripiprazole 30 mg, day 1; AL 1,064 mg, day 8 and every 8 weeks [q8wk]) or paliperidone palmitate (PP 234 mg, day 1; PP 156 mg, day 8 and then q4wk) for 25 weeks.

View Article and Find Full Text PDF

Objective: Schizophrenia clinical trials commonly measure observed changes in Positive and Negative Syndrome Scale (PANSS) total score. However, it is more intuitive to think of response vs nonresponse, a binary outcome. Assessing binary outcomes enables calculation of number needed to treat (NNT) for therapeutic outcomes, number needed to harm (NNH) for adverse outcomes, and likelihood to be helped or harmed (LHH) to demonstrate benefit/risk tradeoffs.

View Article and Find Full Text PDF

Olanzapine is a second-generation atypical antipsychotic with proven efficacy for the treatment of schizophrenia. Approved in 1996, olanzapine is one of the most studied antipsychotics, resulting in a considerable amount of clinical data across diverse patient populations. Despite the fact that olanzapine is associated with a known risk of metabolic side effects, including weight gain, many clinicians continue to prescribe olanzapine for the treatment of schizophrenia with the expectation of additional therapeutic antipsychotic efficacy relative to other first-line atypical antipsychotics.

View Article and Find Full Text PDF

One of the challenges with initiating long-acting injectable (LAI) antipsychotic regimens is achieving relevant drug levels quickly. After first injection of the LAI antipsychotic aripiprazole lauroxil (AL), the lag to reaching relevant plasma aripiprazole levels was initially addressed using supplemental oral aripiprazole for 21 days. A 1-day AL initiation regimen using a NanoCrystal® Dispersion formulation of AL (ALNCD; Aristada Initio®) combined with a single 30 mg dose of oral aripiprazole has been developed as an alternative approach.

View Article and Find Full Text PDF

Long-acting injectable (LAI) antipsychotics are an important treatment option for patients with schizophrenia. Advances and variability in formulation technology have provided several LAI antipsychotic treatment options for schizophrenia, with a wide range of doses and dose intervals. However, clinical reviews of LAIs have not focused on formulation development despite its clinical relevance to injection safety and technique.

View Article and Find Full Text PDF

Objective: Preclinical evidence and data from a proof-of-concept study in healthy volunteers suggest that samidorphan, an opioid antagonist, mitigates weight gain associated with olanzapine. This study prospectively compared combination therapy of olanzapine plus either samidorphan or placebo for the treatment of schizophrenia.

Methods: This was an international, multicenter, randomized phase 2 study of olanzapine plus samidorphan in patients with schizophrenia.

View Article and Find Full Text PDF

To assess the effect of the long-acting antipsychotic aripiprazole lauroxil (AL) on social and functional outcomes compared with placebo in patients with acute schizophrenia, a post-hoc analysis was conducted. Patients with acute schizophrenia were enrolled in a 12-week, double-blind, placebo-controlled efficacy trial, and randomized 1:1:1 to receive AL 441 mg, AL 882 mg, or placebo every 4 weeks. Changes in social functioning using the 6- and 4-item Positive and Negative Syndrome Scale (PANSS) Prosocial subscales were evaluated.

View Article and Find Full Text PDF

We assessed the effectiveness of switching from paliperidone palmitate (PP) or risperidone long-acting injection (RLAI) to aripiprazole lauroxil (AL). Prospective, 6-month study in patients with schizophrenia with residual symptoms or intolerance with PP/RLAI. Effectiveness assessed via all-cause and medication-related discontinuation; CGI-S/BPRS and adverse event monitoring assessed efficacy/tolerability, respectively.

View Article and Find Full Text PDF

Background: Despite the availability of numerous antipsychotic medications, many patients with schizophrenia continue to experience side effects that contribute to the overall burden of the illness. The present survey of patients with schizophrenia and schizoaffective disorder aimed to assess patient attitudes toward antipsychotic treatment, and understand key factors about willingness to try a new medication.

Methods: A cross-sectional survey was administered to 250 patients with a primary clinical diagnosis of a schizophrenia spectrum disorder across five outpatient clinics in the United States.

View Article and Find Full Text PDF

Objective: Safety and tolerability of long-term treatment with the long-acting antipsychotic aripiprazole lauroxil (AL) were evaluated in patients with schizophrenia.

Methods: This was an international, multicenter, phase 3, 52-week safety study of 2 fixed doses of AL (441 mg or 882 mg intramuscular every 4 weeks). Safety endpoints included adverse events (AEs) and extrapyramidal symptoms (EPS) including akathisia, injection-site reactions (ISRs), and clinically relevant changes in metabolic and endocrine values.

View Article and Find Full Text PDF