KNOXVILLE, Tenn.--(BUSINESS WIRE)--Provectus Pharmaceuticals, Inc. (OTC BB: PVCT), a development-stage oncology and dermatology biopharmaceutical company, has initiated a Phase 1 study of PV-10 for liver cancer. The study will enroll up to six subjects with cancer metastatic to the liver or with recurrent liver cancer. PV-10 is the company’s lead oncology drug candidate that is also currently undergoing Phase 2 study for metastatic melanoma.