[Acute leukemia in patients with Down syndrome]

Area of Science:

• Pediatric Oncology
• Hematology
• Genetics

Context:

• Children with Down syndrome (DS) exhibit a higher predisposition to acute leukemia compared to the general pediatric population.
• While acute myeloid leukemia (AML) shows a favorable prognosis in DS patients, acute lymphoblastic leukemia (ALL) outcomes are comparable to non-DS children.
• Chemotherapy-related complications are the primary drivers of morbidity and mortality in pediatric DS patients with leukemia.

Purpose:

• To characterize acute leukemias in children with Down syndrome.
• To determine the clinical outcomes of acute leukemias in pediatric Down syndrome patients.
• To analyze treatment-related complications and their impact on prognosis.

Summary:

• A study at Niño Jesus Hospital (1990-2002) identified 8 pediatric leukemia cases with Down syndrome (3.8%) among 214 patients.
• Hematologic toxicity, leading to infections like pneumonia and bacteremia, was the most frequent complication, causing treatment modifications.
• Two deaths occurred due to treatment toxicity: one from sepsis in AML and another from multi-organ failure in high-risk ALL.

Impact:

• Pediatric patients with Down syndrome diagnosed with acute leukemia experience a higher incidence of treatment-related complications.
• These complications significantly affect the overall prognosis for acute leukemia in children with DS.
• Individualized treatment strategies and care within specialized units are crucial for improving outcomes in this vulnerable population.