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Tumor progression is a phenomenon where the pre-formed tumor acquires successive mutations to become clinically more aggressive and malignant. In the 1950s, Foulds first described the stepwise progression of cancer cells through successive stages.
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Malignant progression of preleukemic disorders.

Trent Hall1, Sandeep Gurbuxani2, John D Crispino1

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Understanding the progression of myeloid disorders from bone marrow failure to acute myeloid leukemia is crucial. Research highlights clonal mutations, genetic factors, and the bone marrow environment in disease development.

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Area of Science:

  • Hematology
  • Oncology
  • Genetics

Background:

  • Myeloid disorders span a spectrum from bone marrow failure to acute myeloid leukemia (AML).
  • Recent single-cell and bulk sequencing advances offer insights into AML transformation.
  • Germline predispositions and premalignant states model AML progression.

Purpose of the Study:

  • To review mechanisms driving progression from premalignant states to acute myeloid leukemia.
  • To focus on clonal hierarchy, genetic alterations, and the bone marrow microenvironment.
  • To identify unmet needs in preventing AML progression or treating established leukemia.

Main Methods:

  • Review of existing literature on myeloid disorder progression.
  • Analysis of models including germline predisposition, premalignant states, and myelodysplastic syndromes.
  • Focus on genetic mutations (transcription factors, splicing factors) and environmental influences.

Main Results:

  • Progression to AML involves a stepwise accumulation of clonal mutations.
  • Alterations in transcription factors and splicing factors play significant roles.
  • The bone marrow microenvironment is a critical factor in disease progression.

Conclusions:

  • Understanding AML progression requires integrating genetic and environmental factors.
  • Despite advances, effective prevention and treatment strategies for AML remain a significant unmet need.
  • Further research into the hierarchy of mutations and microenvironmental influences is warranted.