IL7 and cutaneous mastocytosis: The imbalance of numerous cytokines and chemokines in patients’ blood and CSF can be measured and used to obtain biomarkers of CM-IRIS (e.g., IL6, IL18, TNFα, IL5, IL7, IL17, GCSF, GMCSF, CCL11, and CXCL10) [51,61,62,63].