KIT and systemic mastocytosis: A recent study confirmed a high correlation between blood and bone marrow KIT p.D816V allele burden, demonstrating that the presence of KIT p.D816V in peripheral blood, which is a minor criterion for an SM diagnosis, was highly specific for cMCD, mostly (indolent) systemic mastocytosis ((I)SM), bone marrow mastocytosis (BMM) or monoclonal mast cell activation syndrome (c-MCAS) [29].