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'''Donanemab''' is a [[monoclonal antibody]] designed for the treatment of [[Alzheimer's disease]]. It is developed by [[Eli Lilly and Company]], an American pharmaceutical company. Donanemab targets a modified form of [[beta-amyloid]], a protein that forms plaques in the brains of Alzheimer's patients.
{{Short description|An article about Donanemab, a monoclonal antibody for Alzheimer's disease treatment}}


== Mechanism of Action ==
==Donanemab==
Donanemab works by binding to a specific form of beta-amyloid called N3pG-beta-amyloid. This form of the protein is present in high amounts in the plaques that are characteristic of Alzheimer's disease. By binding to N3pG-beta-amyloid, donanemab helps to clear these plaques from the brain.
[[File:Amyloid-plaque_formation-big.jpg|thumb|right|Amyloid plaque formation in Alzheimer's disease]]
'''Donanemab''' is a monoclonal antibody developed for the treatment of [[Alzheimer's disease]]. It targets a modified form of the [[beta-amyloid]] protein, which is implicated in the formation of [[amyloid plaques]] in the brains of individuals with Alzheimer's disease. These plaques are a hallmark of the disease and are believed to play a critical role in its pathogenesis.


== Clinical Trials ==
==Mechanism of Action==
In 2021, results from a Phase 2 trial of donanemab, known as the TRAILBLAZER-ALZ study, were published. The study found that donanemab significantly slowed the decline in cognition and daily function in patients with early symptomatic Alzheimer's disease. The trial involved 257 patients, and the results were based on a composite score that included measures of cognition and daily function.
Donanemab works by binding to a specific form of beta-amyloid known as N3pG, which is a pyroglutamate-modified form of the protein. This binding facilitates the removal of amyloid plaques from the brain, potentially slowing the progression of Alzheimer's disease. The reduction of amyloid plaques is thought to improve cognitive function and slow the decline in patients with early symptomatic Alzheimer's disease.


== Side Effects ==
==Clinical Development==
The most common side effects of donanemab are [[Amyloid-related imaging abnormalities]] (ARIA), which can cause temporary symptoms such as headache, confusion, dizziness, and nausea. Other side effects can include allergic reactions, such as rash, itching, and swelling.
Donanemab has undergone several phases of clinical trials to assess its safety and efficacy. In early trials, it demonstrated the ability to reduce amyloid plaque levels in the brain, as measured by [[positron emission tomography]] (PET) imaging. Subsequent trials have focused on evaluating its impact on cognitive and functional outcomes in patients with Alzheimer's disease.


== Future Development ==
==Potential Benefits==
Eli Lilly and Company is currently conducting a larger Phase 3 trial of donanemab. The trial, known as TRAILBLAZER-ALZ 2, is expected to enroll 1,500 patients and will further evaluate the safety and efficacy of the drug.
The primary benefit of donanemab is its potential to slow the progression of Alzheimer's disease by targeting and reducing amyloid plaques. This could lead to improved quality of life for patients and a delay in the progression of symptoms such as memory loss, confusion, and difficulty with daily activities.
 
==Side Effects==
As with many monoclonal antibodies, donanemab can cause side effects. Common side effects include [[infusion-related reactions]], which may manifest as fever, chills, or rash. More serious side effects can include [[amyloid-related imaging abnormalities]] (ARIA), which are changes in the brain detected by MRI that can sometimes lead to symptoms such as headache, confusion, or nausea.
 
==Future Directions==
Research on donanemab continues, with ongoing studies aimed at better understanding its long-term effects and potential benefits in different stages of Alzheimer's disease. Researchers are also exploring combination therapies that might enhance the efficacy of donanemab or address other pathological features of Alzheimer's disease.
 
==Related pages==
* [[Alzheimer's disease]]
* [[Monoclonal antibody]]
* [[Beta-amyloid]]
* [[Amyloid plaque]]
* [[Positron emission tomography]]


[[Category:Monoclonal antibodies]]
[[Category:Monoclonal antibodies]]
[[Category:Alzheimer's disease]]
[[Category:Alzheimer's disease treatment]]
[[Category:Experimental drugs]]
[[Category:Eli Lilly and Company]]
 
{{medicine-stub}}

Latest revision as of 06:24, 16 February 2025

An article about Donanemab, a monoclonal antibody for Alzheimer's disease treatment


Donanemab[edit]

Amyloid plaque formation in Alzheimer's disease

Donanemab is a monoclonal antibody developed for the treatment of Alzheimer's disease. It targets a modified form of the beta-amyloid protein, which is implicated in the formation of amyloid plaques in the brains of individuals with Alzheimer's disease. These plaques are a hallmark of the disease and are believed to play a critical role in its pathogenesis.

Mechanism of Action[edit]

Donanemab works by binding to a specific form of beta-amyloid known as N3pG, which is a pyroglutamate-modified form of the protein. This binding facilitates the removal of amyloid plaques from the brain, potentially slowing the progression of Alzheimer's disease. The reduction of amyloid plaques is thought to improve cognitive function and slow the decline in patients with early symptomatic Alzheimer's disease.

Clinical Development[edit]

Donanemab has undergone several phases of clinical trials to assess its safety and efficacy. In early trials, it demonstrated the ability to reduce amyloid plaque levels in the brain, as measured by positron emission tomography (PET) imaging. Subsequent trials have focused on evaluating its impact on cognitive and functional outcomes in patients with Alzheimer's disease.

Potential Benefits[edit]

The primary benefit of donanemab is its potential to slow the progression of Alzheimer's disease by targeting and reducing amyloid plaques. This could lead to improved quality of life for patients and a delay in the progression of symptoms such as memory loss, confusion, and difficulty with daily activities.

Side Effects[edit]

As with many monoclonal antibodies, donanemab can cause side effects. Common side effects include infusion-related reactions, which may manifest as fever, chills, or rash. More serious side effects can include amyloid-related imaging abnormalities (ARIA), which are changes in the brain detected by MRI that can sometimes lead to symptoms such as headache, confusion, or nausea.

Future Directions[edit]

Research on donanemab continues, with ongoing studies aimed at better understanding its long-term effects and potential benefits in different stages of Alzheimer's disease. Researchers are also exploring combination therapies that might enhance the efficacy of donanemab or address other pathological features of Alzheimer's disease.

Related pages[edit]