Cited by 42Alzheimer's disease research and treatmentsDementia and Cognitive Impairment ResearchCholinesterase and Neurodegenerative Diseases

Pharmacological Agents Targeting γ-Secretase Increase Risk of Cancer and Cognitive Decline in Alzheimer’s Disease Patients: A Systematic Review and Meta-Analysis

Penninkilampi, Ross, Brothers, Holly M., Eslick, Guy D.·2016·Journal of Alzheimer’s Disease

Abstract

Background: Drugs targeting γ-secretase in Alzheimer’s disease (AD) have failed to demonstrate efficacy in clinical trials. Objective: To perform a meta-analysis of randomized controlled trials (RCTs) to evaluate the efficacy and safety of drugs targeting γ-secretase in AD. Methods: Ten trials were identified involving 5,227 patients using electronic databases and manual review of reference lists. RCTs of at least two weeks duration involving a drug targeting γ-secretase were eligible. The main outcomes examined were adverse events and cognitive measures (ADAS-cog, MMSE, ADCS-ADL, and CDR-sb). A sub-group analysis was performed, excluding the γ-secretase modulator tarenflurbil, to evaluate the safety and efficacy of γ-secretase inhibitors only. Results: There was an increased risk of adverse events (Odds Ratio (OR) 1.38, 95% CI 1.09–1.73; p = 0.01), serious adverse events (OR 1.50, 95% CI 1.22–1.84; p < 0.001), and skin cancers (OR 4.77, 95% CI 2.83–8.06; p < 0.001). There was significantly increased risk of infections (OR 1.36, 95% CI 1.13–1.63; p < 0.001) in the subgroup analysis excluding tarenflurbil. Pooled results also revealed a worsening in ADAS-cog (difference in means 1.33, 95% CI 0.58–2.08; p < 0.001) and MMSE (difference in means –0.66, 95% CI –0.96 to 0.35; p < 0.001), but not ADCS-ADL or CDR-sb. Conclusion: The use of γ-secretase inhibitors is associated with significantly increased risk of serious adverse events including skin cancers, and worsening in cognitive indicators. This evidence indicates that γ-secretase may not be an appropriate target for clinical treatment of AD.

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Registry

Crossref · 10.3233/jad-160275

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  • Serious safety concerns for γ-secretase inhibitors remove γ-secretase from the role of appropriate target for Alzheimer disease treatment until in-depth studies could help therapeutically target γ-secretase safely.

    “Serious safety concerns for γ-secretase inhibitors remove γ-secretase from the role of appropriate target for the treatment of AD43 until in depth studies on this key enzyme could help to therapeutically target γ-secretase in a safe way.44”

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Authors
Penninkilampi, R., Brothers, H. M., & Eslick, G. D.
Affiliations
  • The University of Sydney (AU)
  • The Ohio State University (US)
Corresponding author
Eslick, Guy D.
Venue
Journal of Alzheimer’s Disease
Published
2016-07-06
Volume
53
Issue
4
Pages
1395-1404
ISSN
  • 1387-2877 (ISSN-L)
  • 1875-8908
OpenAlex
W2470499273
Cited by
42
References
38
Citations by year
2026: 2 · 2025: 2 · 2024: 2 · 2023: 3 · 2022: 4 · 2021: 7 · 2020: 8 · 2019: 6 · 2018: 6 · 2017: 1 · 2016: 1
FWCI
0.55
Type
journal article
Language
en
Open access
closed
Locations
  • Journal of Alzheimer s Disease (publishedVersion)
  • PubMed (publishedVersion)
Topics
  • Health Sciences › Medicine › Physiology › Alzheimer's disease research and treatments
  • Health Sciences › Medicine › Psychiatry and Mental health › Dementia and Cognitive Impairment Research
  • Health Sciences › Medicine › Pharmacology › Cholinesterase and Neurodegenerative Diseases
Keywords
Alzheimer's disease, gamma-secretase inhibitors
MeSH terms
Alzheimer Disease, Cognition Disorders, Humans, Neoplasms, Antipsychotic Agents, Randomized Controlled Trials as Topic, Databases, Bibliographic, Amyloid Precursor Protein Secretases

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