Omalizumab in three children with severe vernal keratoconjunctivitis

Vernal keratoconjunctivitis: Current immunological and clinical evidence and the potential role of omalizumab

Vernal keratoconjunctivitis (VKC) is a severe ocular allergic disease characterized by chronic inflammation of the cornea and conjunctiva that may lead to loss of visual acuity and blindness. The disease occurs primarily in children and is more common in geographical regions characterized by warm temperatures and high humidity. The clinical manifestations of VKC, when inadequately treated, may lead to severe complications and corneal damage. The prevalence of allergen sensitization, specific serum immunoglobulin E (IgE), and specific tear IgE was reported in approximately 55%-60% of patients with VKC, confirming the involvement of IgE-mediated and non-IgE-mediated mechanisms in the pathophysiology of the condition. This article explores current knowledge on the immunological pathways of VKC and the role of the monoclonal anti-IgE antibody, omalizumab, in its management. The review evaluated the effects of omalizumab beyond the direct IgE-mediated reactions and discusses its potential as a therapeutic target for VKC. Multiple retrospective analyses, case series, and case reports have reported the effectiveness of omalizumab in the management of VKC. A summary of the clinical data from these studies revealed that in children with VKC omalizumab treatment was well tolerated with improvement or resolution of ocular symptoms, reduction in steroid use, and enhancement of quality of life. Omalizumab may serve as a promising treatment option for VKC due to its ability to target both IgE-mediated and non-IgE-mediated pathophysiological pathways. Larger, controlled clinical trials are needed to support these findings.

Can omalizumab be used effectively to treat severe conjunctivitis in children with asthma? A case example and review of the literature

A 14-year-old girl with poorly controlled asthma attended the difficult-to-treat asthma clinic for review. Although she has eosinophilia and significantly raised immunoglobulin E levels, she is not currently a candidate for omalizumab (Xolair). She also suffers from chronic urticaria, eosinophilic eosophagitis and severe conjunctivitis. You wonder if omalizumab would be effective in treating her multiple atopic conditions, in particular her troublesome conjunctivitis. PubMed was searched using the following search terms: (Omalizumab) or (Xolair) and (conjunctivitis). Searches were conducted in November 2020. Abstracts were selected for full text review if the study population identified asthma as a comorbidity. Non-paediatric studies and those that were not written in English were excluded. The use of omalizumab has the potential to be effective in the treatment of conjunctivitis associated with asthma and other atopic conditions. However, research is needed to address the question, in the form of multicenter, double-blind randomized control trials.