Look for the Colour: Gray Platelets - A Rare Bleeding Disorder

Area of Science:

• Hematology
• Genetics
• Rare Diseases

Background:

• Gray Platelet Syndrome (GPS) is an exceptionally rare inherited bleeding disorder.
• Characterized by macrothrombocytopenia and defective platelet alpha-granules.
• Leads to mild to moderate hemorrhagic complications.

Observation:

• An 8-year-old boy presented with extensive ecchymotic patches since childhood.
• Peripheral blood smear revealed large, pale platelets lacking granules.
• Normal coagulation parameters and absence of other dysmorphic features.

Findings:

• Genetic analysis identified a homozygous NBEAL2 gene mutation (c.5597del) in exon 35.
• This mutation confirmed the diagnosis of Gray Platelet Syndrome.
• Mean platelet volume was elevated at 12.8 fL.

Implications:

• Highlights the importance of a high index of suspicion for diagnosing rare platelet disorders.
• Emphasizes the necessity of integrated clinical and pathological collaboration for accurate diagnosis.
• Genetic confirmation is crucial for understanding and managing Gray Platelet Syndrome.