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Updated: Apr 11, 2026

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Published on: June 6, 2025
Outlook on PI3K/AKT/mTOR inhibition in acute leukemia
Lars Fransecky1, Liliana H Mochmann1, Claudia D Baldus1
1Department of Hematology and Oncology, Charité University Hospital Berlin, Campus Benjamin Franklin, Berlin, Germany.
Abstract:
Technological advances allowing high throughput analyses across numerous cancer tissues have allowed much progress in understanding complex cellular signaling. In the future, the genetic landscape in cancer may have more clinical relevance than diagnosis based on tumor origin. This progress has emphasized PI3K/AKT/mTOR, among others, as a central signaling center of cancer development due to its governing control in cellular growth, survival, and metabolism. The discovery of high frequencies of mutations in the PI3K/AKT/mTOR pathway in different cancer entities has sparked interest to inhibit elements of this pathway. In acute leukemia pharmacological interruption has yet to achieve desirable efficacy as targetable downstream mutations in PI3K/AKT/mTOR are absent. Nevertheless, mutations in membrane-associated genes upstream of PI3K/AKT/mTOR are frequent in acute leukemia and are associated with aberrant activation of PI3K/AKT/mTOR thus providing a good rationale for further exploration. This review attempts to summarize key findings leading to aberrant activation and to reflect on both promises and challenges of targeting PI3K/AKT/mTOR in acute leukemia. Our emphasis lies on the insights gained through high-throughput data acquisition that open up new avenues for identifying specific subgroups of acute leukemia as ideal candidates for PI3K/AKT/mTOR targeted therapy.
Insights
Targeting the PI3K/AKT/mTOR pathway shows promise for acute leukemia treatment. High-throughput data reveals upstream mutations driving aberrant activation, identifying specific patient subgroups for therapy.
Area of Science:
- Oncology
- Molecular Biology
- Genetics
Background:
- High-throughput analyses advance cancer signaling understanding.
- The PI3K/AKT/mTOR pathway is central to cancer growth, survival, and metabolism.
- Mutations in this pathway are frequent across cancer types, driving therapeutic interest.
Purpose of the Study:
- To review key findings on aberrant PI3K/AKT/mTOR activation in acute leukemia.
- To discuss the potential and challenges of targeting this pathway in acute leukemia.
- To highlight how high-throughput data can identify specific acute leukemia subgroups for targeted therapy.
Main Methods:
- Review of existing literature and high-throughput data.
- Analysis of genetic mutations and signaling pathway activation.
- Identification of upstream and downstream targets within the PI3K/AKT/mTOR pathway.
Main Results:
- While direct PI3K/AKT/mTOR mutations are rare in acute leukemia, upstream mutations frequently cause pathway activation.
- Aberrant PI3K/AKT/mTOR signaling is a key feature in certain acute leukemias.
- High-throughput data provides insights into patient stratification for targeted therapies.
Conclusions:
- Targeting PI3K/AKT/mTOR in acute leukemia presents challenges due to absent downstream mutations.
- Upstream genetic alterations offer a rationale for exploring PI3K/AKT/mTOR inhibition.
- Personalized medicine approaches using high-throughput data can optimize PI3K/AKT/mTOR targeted therapy efficacy in acute leukemia.
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