title: Hepatitis C virus chronic infection and oral lichen planus: an Italian case-control study.
abstract: OBJECTIVE
  The aim of the study was to investigate the possible epidemiological relationship between hepatitis C virus (HCV) chronic infection and oral lichen planus (OLP) in centre-south Italy.
  
  
  METHODS
  In a case-control study three groups of patients were investigated: group 1 (82 patients): patients with histologically confirmed OLP were tested for HCV infection; group 2 (165 patients): patients with chronic HCV infection were examined for OLP; group 3 (466 participants): control group: healthy individuals who had been hospitalized in the Trauma-Orthopaedic Ward and had been tested for HCV.
  
  
  RESULTS
  In group 1, 11.4% of the participants were HCV-positive and HCV was found in 10.8% of the patients above 50 years of age. Eight participants (5.5%) of group 2 showed lesions possibly related to OLP: only two had a histology consistent with OLP. In group 3, 5.4% participants had chronic HCV infection, but HCV was found in 10% of the participants of 50 years and above. A weak overall association between HCV and OLP (odds ratio 2.27; 95% confidence interval 0.94, 5.35; P<0.05) was seen and the result was not statistically significant in participants aged 50 years and above (odds ratio 1.08; 95% confidence interval 0.39, 2.88; P=0.86).
  
  
  CONCLUSIONS
  Our data suggest that no clear association exists between OLP and chronic HCV disease. It is possible that the association is mainly due to the frequency of each disease in the population.
authors.affiliation: School of Dentistry, Catholic University, Largo A. Gemelli, Rome. michele.giuliani@rm.unicatt.it
authors.forename: Michele
authors.initials: M
authors.lastname: Giuliani
authors.forename: Giuliani
authors.initials: G
authors.lastname: Michele
authors.forename: Carlo
authors.initials: C
authors.lastname: Lajolo
authors.forename: Lajolo
authors.initials: L
authors.lastname: Carlo
authors.forename: Mario Carlo
authors.initials: MC
authors.lastname: Miani
authors.forename: Miani Carlo
authors.initials: MC
authors.lastname: Mario
authors.forename: Giovanni
authors.initials: G
authors.lastname: Lodi
authors.forename: Lodi
authors.initials: L
authors.lastname: Giovanni
authors.forename: Pasquale
authors.initials: P
authors.lastname: Minenna
authors.forename: Minenna
authors.initials: M
authors.lastname: Pasquale
authors.forename: Alessandra
authors.initials: A
authors.lastname: Mangia
authors.forename: Mangia
authors.initials: M
authors.lastname: Alessandra
mesh_terms: D000293:Adolescent; D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D000998:Antiviral Agents / Q000627:therapeutic use; D016022:Case-Control Studies; D002648:Child; D005260:Female; D005838:Genotype; D016174:Hepacivirus / Q000235:genetics; D019698:Hepatitis C, Chronic / Q000150:complications* / Q000188:drug therapy; D006801:Humans; D007558:Italy; D017676:Lichen Planus, Oral / Q000150:complications* / Q000473:pathology; D008297:Male; D008875:Middle Aged
chemical_list: D000998:Antiviral Agents