“…Midostaurin is among the important drugs for aggressive systemic mastocytosis (ASM) treatment as a multi-target protein kinase inhibitor, and it was FDA-approved in 2017 [124,127,128,129]. Protein kinase inhibitors from the marine origin that have entered clinical trials include three kinase inhibitors (lestaurtinib [130], enzastaurin [131], CEP-1347 [14,124,127]) in phase III, three kinase inhibitors (kahalalide F [132,133], 7-hydroxystaurosporine [134,135], staurosporine [136]) in phase II and two kinase inhibitors (CEP-2563 [14,124,127], isokahalalide F [14,124,127]) in phase I clinical studies. Somewhat related, bryostatin 1 entered phase II clinical trials for testing in the treatment of Alzheimer’s Disease as a PKC activator, after it was also experimentally used in phase I trials for various forms of cancer [137,138,139].…”