Amongthe investigated statherin proteoforms, only statherin desT42-F43 did not show variations between the three groups,whereas the di- and mono-phosphorylated forms and the desF43, desD1, des1-9, des1-10 and des1-13 truncated forms weresignificantly less concentrated in the saliva of SM patients thanin Ctrls. This evidence concerns the gene STATH and systemic mastocytosis.