[Hereditary haematological malignancies].

Area of Science:

• Hematology
• Genetics
• Oncology

Background:

• Most hematological malignancies are sporadic, but hereditary forms with genetic predispositions exist.
• These hereditary conditions affect myeloid and lymphoid cell lineages, presenting diverse clinical features linked to specific genetic aberrations.
• While Mendelian inheritance is clear in some myeloid syndromes, the role of ambiguous predisposing factors in hereditary leukemogenesis remains unclear.

Purpose of the Study:

• To highlight the significance of genetic alterations in hereditary hematological malignancies.
• To discuss the diagnostic challenges posed by heterogeneous clinical features and numerous genes.
• To emphasize the importance of genetic testing for individuals and families with a susceptibility to blood cancers.

Main Methods:

• Review of existing literature on hereditary hematological malignancies.
• Analysis of genetic predispositions and their association with cytogenetic and molecular aberrations.
• Discussion of diagnostic challenges and familial risk assessment.

Main Results:

• Genetic lesions in hereditary hematological malignancies increase the risk of familial cancers and disease aggregation.
• Lymphoid malignancies often lack specific germline variants, with familial aggregation potentially linked to complex genotypes.
• Predisposing genetic alterations are associated with increased familial risk, underscoring the need for genetic susceptibility testing.

Conclusions:

• Hereditary hematological malignancies, though challenging to diagnose, carry an elevated familial risk due to predisposing genetic alterations.
• Genetic testing is vital for identifying individuals and families with susceptibility to these conditions.
• Further research is needed to fully understand the role of ambiguous predisposing factors in hereditary leukemogenesis.