title: CD4 count and risk of anti-tuberculosis drug-associated cutaneous reactions in HIV-infected Thai patients.
abstract: Tuberculosis (TB) is a major cause of morbidity and mortality in human immunodeficiency virus (HIV) infected patients. However, anti-tuberculosis drugs can cause cutaneous adverse drug reactions (CADRs). This study was conducted to evaluate differences in CADR incidence between low and high CD4 cell count in patients with low and high CD4 cell count and to identify other risk factors for CADR in HIV-TB co-infected patients.
  
  
  
  In a retrospective cohort of adult HIV-TB co-infected patients receiving standard anti-tuberculosis treatment between January 2008 and December 2015 at Vajira Hospital, Bangkok, Thailand, baseline demographic, clinical characteristics and factors associated with CADRs, including CD4 cell count status, were collected.
  
  
  
  Of 307 patients enrolled, CADRs occurred in 48 during the 6-month period of anti-tuberculosis treatment (incidence rate 0.41 events/person-year). Maculopapular rash was the most prevalent CADR. Low CD4 cell count was not associated with CADRs. Cox regression analysis revealed that moderate decrease in the glomerular filtration rate, history of drug hypersensitivity and concomitant cotrimoxazole use were all associated with CADRs. Concomitant antiretroviral therapy use was associated with lower risk of CADRs. No difference in the time to CADRs between patients with lower and higher CD4 cell count could be demonstrated.
  
  
  
  CADRs are common in HIV-TB co-infected patients. Early recognition and prompt withdrawal of the offending agent can prevent complications and improve TB care.
authors.affiliation: Department of Medicine, Faculty of Medicine, Vajira Hospital, Navamindradhiraj University, Bangkok.
authors.forename: L
authors.initials: L
authors.lastname: Boonyagars
authors.affiliation: Department of Otolaryngology, Faculty of Medicine, Chulalongkorn University, Bangkok.
authors.forename: P
authors.initials: P
authors.lastname: Hirunwiwatkul
authors.affiliation: Biostatistics Center of Excellence, Faculty of Medicine, Chulalongkorn University, Bangkok, Thailand.
authors.forename: C P
authors.initials: CP
authors.lastname: Hurst
mesh_terms: D017088:AIDS-Related Opportunistic Infections / Q000188:drug therapy; D000293:Adolescent; D000328:Adult; D019380:Anti-HIV Agents / Q000627:therapeutic use; D000995:Antitubercular Agents / Q000008:administration & dosage / Q000009:adverse effects*; D018791:CD4 Lymphocyte Count; D015331:Cohort Studies; D003875:Drug Eruptions / Q000175:diagnosis / Q000453:epidemiology / Q000209:etiology*; D005260:Female; D005500:Follow-Up Studies; D015658:HIV Infections / Q000150:complications* / Q000188:drug therapy; D006801:Humans; D015994:Incidence; D008297:Male; D008875:Middle Aged; D012189:Retrospective Studies; D012307:Risk Factors; D013785:Thailand; D015662:Trimethoprim, Sulfamethoxazole Drug Combination / Q000008:administration & dosage / Q000009:adverse effects; D014376:Tuberculosis / Q000188:drug therapy*; D055815:Young Adult
chemical_list: D019380:Anti-HIV Agents; D000995:Antitubercular Agents; D015662:Trimethoprim, Sulfamethoxazole Drug Combination