MEK Inhibitor Associated Airway Injury in an Infant With Noonan Syndrome: A Case Report.

Drozdowski-Nuccio, Veronica; Yoon, Rachel D; Tomasi, Steven; Thompson, Dana M; Hazkani, Inbal · Laryngoscope · 2026

case_report · Level V

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Abstract

An infant with Noonan syndrome treated with trametinib developed extensive mucosal sloughing of the upper and lower airway, followed by severe supraglottic scarring. Clinicians should consider airway toxicity as a potential adverse effect of MEK inhibitor therapy.