title: Sorafenib-associated remission of psoriasis in hypernephroma: case report.
abstract: Psoriasis is a disease characterized by epidermal hyperproliferation that results in the formation of lesional plaques covered by scale. Psoriasis is thought to be angiogenesis dependent. Clear cell renal cell carcinoma is a hypervascularized solid tumor associated with loss of function of the von Hippel-Lindau (VHL) tumor suppressor gene and increased Raf-1 activity. A 68-year-old man who suffered from recalcitrant psoriasis for over 50 years was treated with sorafenib for metastatic clear cell renal carcinoma. One month later, his psoriasis, previously 8 x 6 cm on the mid posterior thorax, completely resolved. Sorafenib works by inhibiting several receptor tyrosine kinases (RTKs), such as vascular endothelial growth factor (VEGFR) and platelet-derived growth factor receptor (PDGFR)). It also inhibits intracellular Raf kinase (Raf-1), which targets the ubiquitous mitogen-activated protein kinase (MAPK) intracellular signal transduction pathway. We suggest that this patient's remission of psoriasis could be related to the inhibition/modulation of VEGF, PDGFR, Raf-1, and MAPK.
authors.forename: Christa
authors.initials: C
authors.lastname: Fournier
authors.forename: Glenn
authors.initials: G
authors.lastname: Tisman
mesh_terms: D000368:Aged; D000970:Antineoplastic Agents / Q000627:therapeutic use*; D001557:Benzenesulfonates / Q000627:therapeutic use*; D002292:Carcinoma, Renal Cell / Q000150:complications* / Q000188:drug therapy*; D006801:Humans; D007211:Indoles / Q000627:therapeutic use; D007680:Kidney Neoplasms / Q000150:complications* / Q000188:drug therapy*; D008297:Male; D009536:Niacinamide / Q000031:analogs & derivatives; D010671:Phenylurea Compounds; D047428:Protein Kinase Inhibitors / Q000627:therapeutic use*; D011565:Psoriasis / Q000150:complications / Q000188:drug therapy*; D011725:Pyridines / Q000627:therapeutic use*; D011758:Pyrroles / Q000627:therapeutic use; D019233:Retreatment; D000077157:Sorafenib; D000077210:Sunitinib; D016896:Treatment Outcome
chemical_list: D000970:Antineoplastic Agents; D001557:Benzenesulfonates; D007211:Indoles; D010671:Phenylurea Compounds; D047428:Protein Kinase Inhibitors; D011725:Pyridines; D011758:Pyrroles; D009536:Niacinamide; D000077157:Sorafenib; D000077210:Sunitinib