Besides, patients with morbus Kostmann have congenital neutropenia; neutrophils from these patients were deficient in LL-37, and no cathelicidin is detected by mass spectrometry and Western blot in the plasma and the whole saliva of these patients, suggesting that salivary LL-37 is indeed derived from neutrophils (100). The gene discussed is CAMP; the disease is severe congenital neutropenia.