CXCR4 antagonism ameliorates leukocyte abnormalities in a preclinical model of WHIM syndrome.

Background: WHIM (Warts, Hypogammaglobulinemia, Infections, and Myelokathexis) syndrome is an ultra-rare, combined primary immunodeficiency and chronic neutropenic disorder characterized by a range of clinical presentations, including peripheral neutropenia, lymphopenia, and recurrent infections. WHIM syndrome is most often caused by gain-of-function mutations in the gene encoding C-X-C chemokine receptor 4 (CXCR4). As such, inhibition of CXCR4 with XOLREMDI (mavorixafor), an orally bioavailable CXCR4 antagonist, demonstrated clinically meaningful increases in absolute neutrophil and lymphocyte counts and concomitant reduction in infections in patients with WHIM syndrome, resulting in its recent U.

Effects of functional endoscopic sinus surgery on asthma control in patients with comorbid chronic rhinosinusitis and asthma: A national database study.

In patients with chronic rhinosinusitis and comorbid asthma, patients with surgical intervention required less asthma rescue medication, as compared to those who did not undergo surgery. Following sinus surgery, patients with chronic rhinosinusitis and asthma required more asthma medication, as compared to the time period prior to surgery.

Invasive fungal rhinosinusitis: current evidence and research opportunities.

Purpose Of Review: To summarize the evidence surrounding diagnosis, treatment, prognosis, and surveillance of patients with acute invasive fungal sinusitis (AIFS) and discuss future research needs.

Recent Findings: New risk factors for AIFS such as COVID have been identified, and a new prognostic staging system has been developed.

Summary: Most patients who develop AIFS are immunocompromised, with the majority having a history of diabetes or a hematologic malignancy.

Chief Complaint: Nasal Congestion.

Nasal obstruction is the subjective perception and objective state of insufficient airflow through the nose. Nasal congestion, conversely, describes a state of not just inadequate airflow or obstructive phenomena but also pressure- and mucus-related states to the patient. Nasal receptors belonging to the transient receptor potential (TRP) protein family mediate the sense of nasal patency via the trigeminal nerve.