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Year : 2018  |  Volume : 4  |  Issue : 1  |  Page : 18-22

Role of omalizumab in refractory chronic spontaneous urticaria: A single referral center experience

1 Department of Dermatology, Military Hospital Kirkee, Pune, Maharashtra, India
2 Department of Dermatology, INHS Asvini, Mumbai, Maharashtra, India
3 Department of Dermatology, Base Hospital, Lucknow, Uttar Pradesh, India

Correspondence Address:
Dr. Gautam Kumar Singh
Asst Prof., (Affiliated Faculty AFMC-Pune), Military Hospital, Kirkee, Pune - 411 020, Maharashtra
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Source of Support: None, Conflict of Interest: None

DOI: 10.4103/ijdd.ijdd_2_18

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Background: Multiple evidence have shown that omalizumab, a subcutaneous (SC) anti-IgE monoclonal antibody, is highly effective for the treatment of chronic spontaneous urticaria (CSU). Objective: The objective is to evaluate the safety and efficacy of omalizumab administered 300 mg SC 1st month followed by 150 mg every month for another 5 months in cases of refractory CSU in a routine clinical setting. Materials and Methods: This was open-label, prospective, pilot study to know the efficacy and safety profile of omalizumab administered 300 mg SC first 1st month followed by 150 mg every month for another five 5 months in refractory CSU. The study was conducted at tertiary center in routine clinical setting. The primary efficacy evaluation was a change in Urticaria Activity Score-7 (UAS-7) and Urticaria Control Test (UCT) from baseline. Results: A total of 13 patients (7 females and 6 males) were enrolled in the study with the mean age of 35 years, having CSU from the mean duration of 3.15 years. Mean UAS-7 of patients decreased from 31.62 at baseline to 6.85 after the first dose of omalizumab treatment. This further reduced to 2.31 after 6 months (P = 0.001). Mean UCT increased from 4.46 at baseline to 13.92 after 1 month and further increased to 14.85 after 6 months (P = 0.001). A total of 11 patients (84.6%) achieved complete remission. Conclusion: Injection omalizumab is safe and highly effective therapy for refractory CSU in the routine clinical setting. It can be made cost effective without compromising the efficacy in resource-poor country of Indian subcontinent if barring first dose other can be halved of recommended dose. However, small number of patients, uncontrolled study and lack of long-term follow-up data are the limitations of the study.

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