Virtual Conference
Pharma Conference 2023

Amel Chaabane

University of Monastir , Tunisia

Title: Association of non-immediate drug hypersensitivity with drug exposure: A case control analysis of spontaneous reports from a Tunisian pharmacovigilance database


Purpose: To assess delayed-type cutaneous reactions (DTCRs) related to drugs, using a case-control approach to qualify drug risks.

Methods: The study used the Tunisian pharmacovigilance database of Monastir. The association between drugs and DTCRs was assessed using a case/non-case method. Drugs were grouped according to the ATC Classification System. Patients were defined as "cases" if they have developed DTCRs regardless of the causality assessment. All other reports were "non-cases". Association between reactions and drugs was calculated using the reporting odds ratio (ROR) with 95% confidence intervals (CIs). A p value < 0.05 was considered significant.

Results: The analysis was carried out on 1798 reports, of which 867 concerned DTCRs (cases) and 931 concerned non-cases. The calculated risk estimates were significant for cefotaxime (ROR 2.1; 95% CI 1.5 to 3), pristinamycin (ROR 4; 95% CI 2 to 7.9), sulfamethoxazole (ROR 4.4; 95% CI 1.6 to 11.7), oxacillin (ROR 2.2; 95% CI 1.2 to 3.8), doxycycline (ROR 10.8; 95% CI 1.4 to 84.9), carbamazepine (ROR 3.3; 95% CI 1.7 to 6.2), phenobarbital (ROR 2.3; 95% CI 1.03 to 5.1), allopurinol (ROR 3.6; 95% CI 1.8 to 7.2), furosemide (ROR 2.4; 95% CI 1.3 to 6.3), hydrochlorothiazide(ROR 2.9; 95% CI 1.3 to 6.3) and candesartan (ROR 4.7; 95% CI 1.3 to 16.6). 

Conclusion: Our findings corroborate risks for a number of drugs, such as antibacterials, antiepileptics and allopurinol in inducing DTCRs. Given the widespread use of these drug classes, awareness should be raised among patients and prescribers about these risks


Amel Chaabane is a Medical Doctor since 2006 and has completed the University Hospital Professor Degree since 2018. She is specialist in Pharmacovigilance and Clinical Pharmacology at the Clinical Pharmacology Department of Monastir (Tunisia) and a University professor at the Faculty of Medicine of Monastir. She has over 65 publications that have been cited over 460 times, and his publication h-index is 12. He has been serving as an editorial board member and reviewer of several reputed journals.