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DENVER —
More than half of participants in the open-label extension period of the randomized clinical trial responded to the medication, which was associated with a 3.6-fold lower risk for relapse compared with placebo.
“The positive efficacy and favorable safety results with AXS-05 support its potential to fulfill a high unmet need for the treatment of Alzheimer’s disease agitation,” said Anton P. Porsteinsson, MD, director of the Alzheimer’s Disease Care, Research and Education Program, University of Rochester, New York.
The findings were presented at the 2024 annual meeting of the American Academy of Neurology.
Common and Disruptive
Agitation is reported in up to 70% of patients with Alzheimer’s disease and is characterized by emotional distress, aggressive behaviors, disruptive irritability, and disinhibition. Alzheimer’s disease-related agitation has been associated with increased caregiver burden, decreased functioning, accelerated cognitive decline, earlier nursing home placement, and increased mortality.
A previous phase 2/3 study of AXS-05 showed that the investigative agent led to rapid and significantly improvement in Alzheimer’s disease agitation, as measured by the Cohen-Mansfield Agitation Inventory (CMAI) total score, compared with placebo.
ACCORD was a phase 3, randomized, double-blind, placebo-controlled withdrawal trial evaluating the efficacy and safety of AXS-05 in patients with Alzheimer’s disease agitation.
In the open-label period, 178 adults with probable Alzheimer’s disease and clinically significant agitation received AXS-05 (titrated to 45 mg dextromethorphan/105 mg bupropion twice daily) for up to 9 weeks.
A total of 108 (61%) patients had a sustained response, with 30% or more improvement from baseline in the CMAI total score and improvement on the Patient Global Impression of Change that were both maintained for 4 or more consecutive weeks. These patients entered the double-blind phase and were randomly allocated to receive twice-daily AXS-05 or placebo for up to 26 weeks.
In the double-blind period, AXS-05 “substantially and statistically” increased the time to relapse of agitation symptoms compared with placebo (hazard ratio [HR], 0.275; P = .014).
“The risk of relapse was 3.6-fold lower with AXS-05 compared with placebo,” Dr. Porsteinsson reported.
AXS-05 was also associated with a significantly lower relapse rate compared with placebo (7.5% vs 25.9%; P = .018).
Rates of discontinuation in the double-blind period owing to adverse events (AEs) were low (0% for AXS-05 and 1.9% for placebo). Three serious AEs were reported: one in the AXS-05 group (fecaloma), which was not related to study medication, and two in the placebo group (cardiac arrest, femur fracture).
Falls were reported in four participants in the AXS-05 group, none of which were related to study medication or associated with serious AEs, and in two participants in the placebo group, one of which was associated with femur fracture.
One death was reported in the placebo group. There was no evidence of cognitive decline with AXS-05, and treatment was not associated with sedation.
Promising Agent
Commenting on this research, Glen R. Finney, MD, director of the Geisinger Memory and Cognition Clinic in Wilkes-Barre, Pennsylvania, said the data “look promising as a safe way to help address acute agitation and reduce agitation reoccurrence.
“Agitation is a common, distressing, and sometimes safety issue for people fighting Alzheimer’s disease, and there’s very little evidence for efficacy and significant side effect issues for current medical management of agitation in Alzheimer’s disease,” said Dr. Finney, who was not part of the study.
He noted that first-line strategies for addressing agitation involve behavioral and environmental interventions.
“See if there’s a reason for the agitation and address that. Look for triggers for agitation and avoid those. Find places, things, and interactions that help people with Alzheimer’s disease avoid agitation: familiar locations, music, simple engaging activities. Reassurance, redirection, and distraction can help de-escalate agitation. Provide a safe environment that reduces safety risks,” Dr. Finney explained.
The next step, when medically appropriate, is trying acetylcholinesterase inhibitors such as donepezil, rivastigmine, and galantamine, and then adding memantine, a weak N-methyl-D-aspartate receptor antagonist.
“These medications can help reduce the risk of agitation,” Dr. Finney said.
“Beyond that, the evidence becomes weaker for any specific treatments, and that is where treatments with emerging evidence of efficacy and safety like dextromethorphan-bupropion become important,” Dr. Finney added.
Last May, the US Food and Drug Administration (FDA) approved the antipsychotic brexpiprazole (Rexulti) for Alzheimer’s disease-related agitation, making it the first FDA-approved drug for this indication.
The drug includes a boxed warning for medications in this class that older patients with dementia-related psychosis treated with antipsychotic drugs are at an increased risk for death.
“There’s certainly a need to have multiple options for treating agitation in individuals with Alzheimer’s disease,” said Rebecca Edelmayer, PhD, senior director of scientific engagement for the Alzheimer’s Association.
Dr. Edelmayer, who was not part of the study, noted that in the ACCORD study, AXS-05 “significantly delayed the relapse or prevented the relapse with Alzheimer’s disease agitation compared with the placebo group and it was generally well tolerated, but it will be important to make sure that there’s more thorough review of the data overall to be sure that it’s both safe and effective.”
The study was funded by Axsome Therapeutics, the manufacturer of AXS-05. Dr. Porsteinsson has disclosed no relevant conflicts of interest. Dr. Finney and Dr. Edelmayer have no relevant disclosures.
A version of this article appeared on Medscape.com.
DENVER —
More than half of participants in the open-label extension period of the randomized clinical trial responded to the medication, which was associated with a 3.6-fold lower risk for relapse compared with placebo.
“The positive efficacy and favorable safety results with AXS-05 support its potential to fulfill a high unmet need for the treatment of Alzheimer’s disease agitation,” said Anton P. Porsteinsson, MD, director of the Alzheimer’s Disease Care, Research and Education Program, University of Rochester, New York.
The findings were presented at the 2024 annual meeting of the American Academy of Neurology.
Common and Disruptive
Agitation is reported in up to 70% of patients with Alzheimer’s disease and is characterized by emotional distress, aggressive behaviors, disruptive irritability, and disinhibition. Alzheimer’s disease-related agitation has been associated with increased caregiver burden, decreased functioning, accelerated cognitive decline, earlier nursing home placement, and increased mortality.
A previous phase 2/3 study of AXS-05 showed that the investigative agent led to rapid and significantly improvement in Alzheimer’s disease agitation, as measured by the Cohen-Mansfield Agitation Inventory (CMAI) total score, compared with placebo.
ACCORD was a phase 3, randomized, double-blind, placebo-controlled withdrawal trial evaluating the efficacy and safety of AXS-05 in patients with Alzheimer’s disease agitation.
In the open-label period, 178 adults with probable Alzheimer’s disease and clinically significant agitation received AXS-05 (titrated to 45 mg dextromethorphan/105 mg bupropion twice daily) for up to 9 weeks.
A total of 108 (61%) patients had a sustained response, with 30% or more improvement from baseline in the CMAI total score and improvement on the Patient Global Impression of Change that were both maintained for 4 or more consecutive weeks. These patients entered the double-blind phase and were randomly allocated to receive twice-daily AXS-05 or placebo for up to 26 weeks.
In the double-blind period, AXS-05 “substantially and statistically” increased the time to relapse of agitation symptoms compared with placebo (hazard ratio [HR], 0.275; P = .014).
“The risk of relapse was 3.6-fold lower with AXS-05 compared with placebo,” Dr. Porsteinsson reported.
AXS-05 was also associated with a significantly lower relapse rate compared with placebo (7.5% vs 25.9%; P = .018).
Rates of discontinuation in the double-blind period owing to adverse events (AEs) were low (0% for AXS-05 and 1.9% for placebo). Three serious AEs were reported: one in the AXS-05 group (fecaloma), which was not related to study medication, and two in the placebo group (cardiac arrest, femur fracture).
Falls were reported in four participants in the AXS-05 group, none of which were related to study medication or associated with serious AEs, and in two participants in the placebo group, one of which was associated with femur fracture.
One death was reported in the placebo group. There was no evidence of cognitive decline with AXS-05, and treatment was not associated with sedation.
Promising Agent
Commenting on this research, Glen R. Finney, MD, director of the Geisinger Memory and Cognition Clinic in Wilkes-Barre, Pennsylvania, said the data “look promising as a safe way to help address acute agitation and reduce agitation reoccurrence.
“Agitation is a common, distressing, and sometimes safety issue for people fighting Alzheimer’s disease, and there’s very little evidence for efficacy and significant side effect issues for current medical management of agitation in Alzheimer’s disease,” said Dr. Finney, who was not part of the study.
He noted that first-line strategies for addressing agitation involve behavioral and environmental interventions.
“See if there’s a reason for the agitation and address that. Look for triggers for agitation and avoid those. Find places, things, and interactions that help people with Alzheimer’s disease avoid agitation: familiar locations, music, simple engaging activities. Reassurance, redirection, and distraction can help de-escalate agitation. Provide a safe environment that reduces safety risks,” Dr. Finney explained.
The next step, when medically appropriate, is trying acetylcholinesterase inhibitors such as donepezil, rivastigmine, and galantamine, and then adding memantine, a weak N-methyl-D-aspartate receptor antagonist.
“These medications can help reduce the risk of agitation,” Dr. Finney said.
“Beyond that, the evidence becomes weaker for any specific treatments, and that is where treatments with emerging evidence of efficacy and safety like dextromethorphan-bupropion become important,” Dr. Finney added.
Last May, the US Food and Drug Administration (FDA) approved the antipsychotic brexpiprazole (Rexulti) for Alzheimer’s disease-related agitation, making it the first FDA-approved drug for this indication.
The drug includes a boxed warning for medications in this class that older patients with dementia-related psychosis treated with antipsychotic drugs are at an increased risk for death.
“There’s certainly a need to have multiple options for treating agitation in individuals with Alzheimer’s disease,” said Rebecca Edelmayer, PhD, senior director of scientific engagement for the Alzheimer’s Association.
Dr. Edelmayer, who was not part of the study, noted that in the ACCORD study, AXS-05 “significantly delayed the relapse or prevented the relapse with Alzheimer’s disease agitation compared with the placebo group and it was generally well tolerated, but it will be important to make sure that there’s more thorough review of the data overall to be sure that it’s both safe and effective.”
The study was funded by Axsome Therapeutics, the manufacturer of AXS-05. Dr. Porsteinsson has disclosed no relevant conflicts of interest. Dr. Finney and Dr. Edelmayer have no relevant disclosures.
A version of this article appeared on Medscape.com.
DENVER —
More than half of participants in the open-label extension period of the randomized clinical trial responded to the medication, which was associated with a 3.6-fold lower risk for relapse compared with placebo.
“The positive efficacy and favorable safety results with AXS-05 support its potential to fulfill a high unmet need for the treatment of Alzheimer’s disease agitation,” said Anton P. Porsteinsson, MD, director of the Alzheimer’s Disease Care, Research and Education Program, University of Rochester, New York.
The findings were presented at the 2024 annual meeting of the American Academy of Neurology.
Common and Disruptive
Agitation is reported in up to 70% of patients with Alzheimer’s disease and is characterized by emotional distress, aggressive behaviors, disruptive irritability, and disinhibition. Alzheimer’s disease-related agitation has been associated with increased caregiver burden, decreased functioning, accelerated cognitive decline, earlier nursing home placement, and increased mortality.
A previous phase 2/3 study of AXS-05 showed that the investigative agent led to rapid and significantly improvement in Alzheimer’s disease agitation, as measured by the Cohen-Mansfield Agitation Inventory (CMAI) total score, compared with placebo.
ACCORD was a phase 3, randomized, double-blind, placebo-controlled withdrawal trial evaluating the efficacy and safety of AXS-05 in patients with Alzheimer’s disease agitation.
In the open-label period, 178 adults with probable Alzheimer’s disease and clinically significant agitation received AXS-05 (titrated to 45 mg dextromethorphan/105 mg bupropion twice daily) for up to 9 weeks.
A total of 108 (61%) patients had a sustained response, with 30% or more improvement from baseline in the CMAI total score and improvement on the Patient Global Impression of Change that were both maintained for 4 or more consecutive weeks. These patients entered the double-blind phase and were randomly allocated to receive twice-daily AXS-05 or placebo for up to 26 weeks.
In the double-blind period, AXS-05 “substantially and statistically” increased the time to relapse of agitation symptoms compared with placebo (hazard ratio [HR], 0.275; P = .014).
“The risk of relapse was 3.6-fold lower with AXS-05 compared with placebo,” Dr. Porsteinsson reported.
AXS-05 was also associated with a significantly lower relapse rate compared with placebo (7.5% vs 25.9%; P = .018).
Rates of discontinuation in the double-blind period owing to adverse events (AEs) were low (0% for AXS-05 and 1.9% for placebo). Three serious AEs were reported: one in the AXS-05 group (fecaloma), which was not related to study medication, and two in the placebo group (cardiac arrest, femur fracture).
Falls were reported in four participants in the AXS-05 group, none of which were related to study medication or associated with serious AEs, and in two participants in the placebo group, one of which was associated with femur fracture.
One death was reported in the placebo group. There was no evidence of cognitive decline with AXS-05, and treatment was not associated with sedation.
Promising Agent
Commenting on this research, Glen R. Finney, MD, director of the Geisinger Memory and Cognition Clinic in Wilkes-Barre, Pennsylvania, said the data “look promising as a safe way to help address acute agitation and reduce agitation reoccurrence.
“Agitation is a common, distressing, and sometimes safety issue for people fighting Alzheimer’s disease, and there’s very little evidence for efficacy and significant side effect issues for current medical management of agitation in Alzheimer’s disease,” said Dr. Finney, who was not part of the study.
He noted that first-line strategies for addressing agitation involve behavioral and environmental interventions.
“See if there’s a reason for the agitation and address that. Look for triggers for agitation and avoid those. Find places, things, and interactions that help people with Alzheimer’s disease avoid agitation: familiar locations, music, simple engaging activities. Reassurance, redirection, and distraction can help de-escalate agitation. Provide a safe environment that reduces safety risks,” Dr. Finney explained.
The next step, when medically appropriate, is trying acetylcholinesterase inhibitors such as donepezil, rivastigmine, and galantamine, and then adding memantine, a weak N-methyl-D-aspartate receptor antagonist.
“These medications can help reduce the risk of agitation,” Dr. Finney said.
“Beyond that, the evidence becomes weaker for any specific treatments, and that is where treatments with emerging evidence of efficacy and safety like dextromethorphan-bupropion become important,” Dr. Finney added.
Last May, the US Food and Drug Administration (FDA) approved the antipsychotic brexpiprazole (Rexulti) for Alzheimer’s disease-related agitation, making it the first FDA-approved drug for this indication.
The drug includes a boxed warning for medications in this class that older patients with dementia-related psychosis treated with antipsychotic drugs are at an increased risk for death.
“There’s certainly a need to have multiple options for treating agitation in individuals with Alzheimer’s disease,” said Rebecca Edelmayer, PhD, senior director of scientific engagement for the Alzheimer’s Association.
Dr. Edelmayer, who was not part of the study, noted that in the ACCORD study, AXS-05 “significantly delayed the relapse or prevented the relapse with Alzheimer’s disease agitation compared with the placebo group and it was generally well tolerated, but it will be important to make sure that there’s more thorough review of the data overall to be sure that it’s both safe and effective.”
The study was funded by Axsome Therapeutics, the manufacturer of AXS-05. Dr. Porsteinsson has disclosed no relevant conflicts of interest. Dr. Finney and Dr. Edelmayer have no relevant disclosures.
A version of this article appeared on Medscape.com.
FROM AAN 2024