title: Retrospective survey of serum lipids in patients receiving more than three courses of isotretinoin.
abstract: Isotretinoin is well recognised to cause hyperlipidaemia. This is most obvious during the second month of a 4-month course. Since there are no long-term data on lipid profiles, we have identified 30 subjects who have received 3 or more courses of isotretinoin. They had been exposed to a median of 24.5 months (range 12-103) isotretinoin therapy with a median total cumulative dose of 350 mg/kg (range 152-1221). The median serum cholesterol pre-treatment was 4.6 mmol/L (range 3-6.4). This compared to a median of 4.5 mmol/L (range 3-6.4) just prior to starting the final course. The median triglyceride levels before treatment and pre-final course were 0.8 mmol/L (range 0.3-1.7) and 0.92 mmol/L (range 0.4-2.6) respectively, indicating no significant change in cholesterol or triglyceride concentrations when measured prior to the first and last courses. In addition there was no correlation between cholesterol or triglyceride concentration before the final course of isotretinoin and the total cumulative dose of isotretinoin. We conclude that there appears to be little risk of causing hyperlipidaemia by prolonged therapy with isotretinoin in patients with acne.
authors.affiliation: Department of Dermatology and Clinical Biochemistry, Leeds General Infirmary, Leeds LS1 3EX, UK. baxterkay@hotmail.com
authors.forename: K F
authors.initials: KF
authors.lastname: Baxter
authors.forename: T C
authors.initials: TC
authors.lastname: Ling
authors.forename: J H
authors.initials: JH
authors.lastname: Barth
authors.forename: W J
authors.initials: WJ
authors.lastname: Cunliffe
mesh_terms: D000152:Acne Vulgaris / Q000175:diagnosis / Q000188:drug therapy; D000293:Adolescent; D000328:Adult; D017677:Age Distribution; D002648:Child; D008076:Cholesterol, HDL / Q000097:blood; D008078:Cholesterol, LDL / Q000097:blood; D015331:Cohort Studies; D004305:Dose-Response Relationship, Drug; D004334:Drug Administration Schedule; D005260:Female; D006801:Humans; D006949:Hyperlipidemias / Q000139:chemically induced* / Q000453:epidemiology; D015994:Incidence; D015474:Isotretinoin / Q000009:adverse effects* / Q000627:therapeutic use; D008074:Lipoproteins / Q000097:blood*; D008297:Male; D008875:Middle Aged; D011336:Probability; D012189:Retrospective Studies; D018570:Risk Assessment; D012680:Sensitivity and Specificity; D017678:Sex Distribution; D018709:Statistics, Nonparametric
chemical_list: D008076:Cholesterol, HDL; D008078:Cholesterol, LDL; D008074:Lipoproteins; D015474:Isotretinoin