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  • Title: Leukotriene receptor antagonists as adjuvant therapy of antihistamines in chronic urticaria: a systematic review and meta-analysis.
    Author: Ribeiro Gonçalves O, Ribeiro VEA, Galvão MTL, Silva ROS, Sobral MVS, Kojima GSA, Freitas JLR, Soares VG, de Azevedo BB, Baima de Melo C.
    Journal: Int J Dermatol; 2024 Sep; 63(9):1140-1144. PubMed ID: 38650086.
    Abstract:
    Certain guidelines recommend a second-generation H1-antihistamine (AH) as first-line treatment for patients with chronic urticaria (CU). However, some patients show insufficient response to a standard dose of this therapy and might benefit from adding leukotriene receptor antagonists (LTA). Therefore, we aimed to perform a systematic review and meta-analysis comparing LTA plus antihistamines with antihistamines alone. We performed a systematic review and meta-analysis, searching PubMed, EMBASE, and Cochrane Central for randomized clinical trial (RCT) data comparing LTA plus AH treatment to AH alone in patients with CU. Statistical analysis was performed using R Studio 4.3.2. Heterogeneity was assessed with I2 statistics. Three studies comprising 234 patients with urticaria were included. The mean age was 37.23 years in the leukotriene antagonist + antihistamines (LTA + AH) group and 39.14 years in the antihistamines (AH) group. Follow-up ranged from 2 to 18 months between studies. There was no statistically significant difference between groups in terms of TSS level (SMD: -74.82; 95% CI: -222.66 to 73.02; P = 0.32; I2 = 98%), neither in terms of pruritus (MD: -0.07; 95% CI: -0.42 to 0.28; P = 0.70; I2 = 74%). After sensitivity analysis, with the systematic exclusion of each study from the grouped estimates, the result for TSS level did not change. These findings suggest that leukotriene receptor antagonists with antihistamines do not have better outcomes than antihistamines alone regarding TSS and pruritus in patients with CU.
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