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Genetic predisposition to MDS: clinical features and clonal evolution

Alyssa L Kennedy1, Akiko Shimamura1

  • 1Dana Farber/Boston Children's Cancer and Blood Disorders Center, Harvard Medical School, Boston, MA.

Blood
|January 24, 2019
PubMed

Insights

Genetic predisposition is key in myelodysplastic syndromes (MDS), especially in younger individuals. Understanding these genetic factors aids diagnosis, management, and developing new therapies for MDS.

Area of Science:

  • Hematology
  • Genetics
  • Oncology

Background:

  • Myelodysplastic syndromes (MDS) are often linked to somatic mutations in older adults.
  • In contrast, pediatric and young adult MDS frequently involves germline genetic predisposition.
  • Germline predisposition is also increasingly identified in older MDS patients.

Purpose of the Study:

  • To review syndromes associated with genetic predisposition to MDS.
  • To discuss clinical evaluation, management, and scientific insights from MDS predisposition syndromes.
  • To explore the impact of germline genetics on somatic clonal evolution in MDS.

Main Methods:

  • Literature review of genetic MDS predisposition syndromes.
  • Analysis of clinical implications for evaluation and management.
  • Exploration of molecular and genetic pathways in clonal evolution.

Main Results:

  • Genetic MDS disorders represent a significant proportion of MDS in children and young adults.
  • Genetic testing is crucial for diagnosis, as overt syndromic features are often absent.
  • Germline genetic context influences selective pressures driving somatic clonal evolution.

Conclusions:

  • Elucidating genetic MDS pathways can improve surveillance and risk stratification.
  • Understanding germline predisposition may lead to novel therapeutic strategies for MDS.
  • Genetic testing is vital for diagnosing MDS, particularly in younger populations.

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