Bloom syndrome is a rare genetic disorder with fewer than 300 cases documented and is marked by chromosome instability, growth issues, and a high risk of cancer, especially leukemia.
The disorder has a higher prevalence in Ashkenazi Jews, but the text discusses a Mexican American family with a specific gene mutation that has been linked to the syndrome.
In this family, three siblings show symptoms of Bloom syndrome, and one sibling was diagnosed with rhabdomyosarcoma, indicating a potential common genetic origin for this mutation in the Hispanic Mexican population.