Mondo Description Any inherited bleeding disorder, platelet-type in which the cause of the disease is a mutation in the ACTN1 gene.

Uniprot Description An autosomal dominant form of macrothrombocytopenia. Affected individuals usually have no or only mild bleeding tendency, such as epistaxis. Laboratory studies show decreased numbers of large platelets and anisocytosis, but the platelets show no in vitro functional abnormalities.

Disease Ontology Description An inherited blood coagulation disease characterized by autosomal dominant inheritance of macrothrombocytopenia with little or no bleeding tendency and normal in vitro platelet function that has material basis in heterozygous mutation in the ACTN1 gene on chromosome 14q.