Multidimensional super-response to omalizumab in a patient with N-ERD: 9-year follow-up of a case report

In recent years, biological therapy based on endotyping has become a therapeutic option for patients with type 2 inflammatory process with chronic rhinosinusitis with nasal polyps with or without bronchial asthma. It is also used in the course of a particularly aggressive chronic rhinosinusitis with nasal polyps in patients with bronchial asthma and hypersensitivity to non-steroidal anti-inflammatory drug (NSAID-exacerbated respiratory disease, N-ERD). Identification of the patient’s inflammatory endotype enables targeted biological treatment and optimal results from biological therapy. The search for biomarkers that identify patients who will benefit from biological treatment remains a current topic of investigation. A particularly difficult therapeutic decision concerns patients with a mixed endotype (eosinophilic/allergic), which affects patients with N-ERD. The authors present a case of multidimensional beneficial results in a 39-year-old female patient with N-ERD syndrome during biological treatment with omalizumab. The parameters of inflammation, the results of computed tomography, and the results of questionnaires assessing the patient’s quality of life before, after 4 months and 9 years of biological treatment are presented. Excellent results were found in all criteria of efficacy of biological treatment: reduced nasal polyp size (complete remission of polyps in the paranasal sinuses), reduced need for systemic corticosteroids (no systemic steroids have been used since the start of therapy), improved sense of smell, reduced impact of comorbidities (complete control of bronchial asthma) and in the patient’s opinion, an extremely significant improvement in quality of life. Thus, the patient can be considered as a super-responder. Analysis of the parameters of patients who achieved optimal therapeutic results may also be helpful in selecting type of biological treatment for future patients.