title: Evaluation of efalizumab using safe psoriasis control.
abstract: BACKGROUND
  Safe Psoriasis Control (SPC) is an important comprehensive measure that is validated for the assessment of benefit:risk of psoriasis treatments, combining efficacy, quality of life, and safety measures. The objective of this analysis was to assess the benefit:risk of efalizumab, a novel biologic agent indicated for the treatment of moderate-to-severe plaque psoriasis, by applying the SPC to data from randomized, placebo-controlled clinical studies of efalizumab.
  
  
  METHODS
  SPC was applied to week 12 data from four placebo-controlled, Phase III studies: three retrospective and one prospective, the latter including a cohort of "high-need" patients for whom existing therapies were inadequate or unsuitable.
  
  
  RESULTS
  In the retrospective analysis, 39.4% of patients achieved SPC after 12 weeks of treatment with efalizumab, compared with 10.4% for placebo. In the prospective analysis, 34.3% of patients achieved SPC after 12 weeks of treatment with efalizumab, compared with 7.3% on placebo. Among high-need patients, 33.0% achieved SPC, compared with 3.4% on placebo.
  
  
  CONCLUSIONS
  Efalizumab has a favorable benefit:risk profile using the comprehensive outcome measure SPC.
authors.affiliation: Probity Medical Research, 135 Union Street East, Waterloo, Ontario, Canada. kapapp@probitymedical.com
authors.forename: Kim A
authors.initials: KA
authors.lastname: Papp
authors.forename: Eric
authors.initials: E
authors.lastname: Henninger
mesh_terms: D000293:Adolescent; D000328:Adult; D000368:Aged; D000911:Antibodies, Monoclonal / Q000009:adverse effects / Q000627:therapeutic use*; D061067:Antibodies, Monoclonal, Humanized; D015415:Biomarkers; D017326:Clinical Trials, Phase III as Topic / Q000706:statistics & numerical data; D015331:Cohort Studies; D005260:Female; D006801:Humans; D007166:Immunosuppressive Agents / Q000009:adverse effects / Q000627:therapeutic use*; D008297:Male; D008875:Middle Aged; D011446:Prospective Studies; D011565:Psoriasis / Q000188:drug therapy* / Q000523:psychology; D011788:Quality of Life; D016032:Randomized Controlled Trials as Topic / Q000706:statistics & numerical data; D012189:Retrospective Studies; D018570:Risk Assessment; D016896:Treatment Outcome
chemical_list: D000911:Antibodies, Monoclonal; D061067:Antibodies, Monoclonal, Humanized; D015415:Biomarkers; D007166:Immunosuppressive Agents; C472181:efalizumab