Familial infantile thrombotic thrombocytopenic purpura

Area of Science:

• Hematology
• Genetics
• Pediatrics

Background:

• Familial infantile thrombotic thrombocytopenic purpura (TTP) is a rare, often fatal, hematologic disorder.
• Understanding its pathophysiology is crucial for developing effective treatments.

Observation:

• Two infants from a consanguineous union presented with symptoms consistent with familial infantile TTP.
• Both siblings experienced temporary remission following blood product transfusions (whole blood and fresh frozen plasma).

Findings:

• The surviving proband achieved prolonged remission with periodic fresh frozen plasma (FFP) transfusions.
• Unusually large von Willebrand factor multimers were present in the proband, with normal processing activity.
• The familial occurrence in a consanguineous union strongly suggests a specific genetic etiology.

Implications:

• This case highlights a potential genetic defect underlying familial infantile TTP.
• FFP transfusions may be a viable therapeutic option for managing this rare condition.
• Further research is warranted to identify the specific genetic mutation responsible for this disorder.