Comparison of the efficacy and safety of Sungai Buloh Augmented Multiple Drug Therapy (SBA-MDT) and the World Health Organisation Multiple Drug Therapy (WHO-MDT) in the Treatment of Leprosy in Malaysia

ABSTRACT

Background Multiple drug therapy for leprosy has been in use in Malaysia since 1985. The SBAMDT is a modified WHO-MDT with an initial intensive phase and a longer duration of treatment. Objective The aim of the study is to compare the efficacy and safety of SBA-MDT against WHOMDT in the Treatment of Leprosy in Malaysia. Methodology A retrospective study was conducted between 1985 and 2009 in thirteen Malaysian dermatology centres. Data collected were analysed for comparison of relapse rates, compliance rates and adverse drug effects between the 2 regimes. Results A total of 1113 patients were included, of which 966 patients completed the SBA-MDT and 147 patients completed the WHO-MDT. Both the MDT regimes had a treatment failure rate of less than 2%. The relapse rate was 1.7% with SBA-MDT and 1.4% with WHO-MDT (p = 0.79). For multibacillary leprosy, the relapse rates were 0.9% with the former and 0 with the latter (p = 0.32). For paucibacillary leprosy, it was 3.1% and 5.0% respectively (p = 0.52). Patients on SBA-MDT had higher type 1 (16.1% vs. 8.8%, p = 0.03) and type 2 lepra reactions (19.2% vs. 6.1%, p < 0.001). Similarly, those on SBA-MDT also had higher rate of severe adverse drug reactions (11.1% vs. 5.6%, p = 0.01). Conclusion Both the SBA-MDT and the WHO-MDT regimes were effective in inducing clinical remission. Incidence of lepra reactions and severe adverse drug reactions were higher in patients with SBA-MDT.