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Abnormal dense granules

MedGen UID:
Concept ID:
Anatomical Abnormality
HPO: HP:0012484


Defective structure, size or content of dense granules, platelet organelles that contain granules proaggregatory factors such as adenosine diphosphate (ADP), adenosine triphosphate (ATP), ionized calcium, histamine and serotonin. [from HPO]

Conditions with this feature

Chédiak-Higashi syndrome
MedGen UID:
Concept ID:
Disease or Syndrome
Chediak-Higashi syndrome (CHS) is characterized by partial oculocutaneous albinism, immunodeficiency, and a mild bleeding tendency. Approximately 85% of affected individuals develop the accelerated phase, or hemophagocytic lymphohistiocytosis, a life-threatening, hyperinflammatory condition. All affected individuals including adolescents and adults with atypical CHS and children with classic CHS who have successfully undergone allogenic hematopoietic stem cell transplantation (HSCT) develop neurologic findings during early adulthood.

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