Cancer Drug Derived From Himalayan 'Caterpillar Fungus' SmasCancer Drug Derived From Himalayan 'Caterpillar Fungus' Smashes Early Clinical Trial PETER DOCKRILL 12 OCTOBER 2021 A new kind of chemotherapy derived from a molecule found in a Himalayan fungus has been revealed as a potent anti-canceragent, and may in the future provide a new treatment option for patients with cancer.