Recalcitrant trametinib-induced paronychia treated successfully with topical timolol in a pediatric patient

Dermatol Ther. 2020 Jan;33(1):e13164. doi: 10.1111/dth.13164. Epub 2019 Nov 15.

Abstract

Paronychia has been described as a side effect in patients undergoing treatment with MEK (mitogen activated protein kinase enzyme) inhibitors. It is usually a recurrent condition that can have a significant impact in the quality of life. Topical beta blocker treatment has been described as an effective therapy in antineoplastic-induced pyogenic granulomas and in antineoplastic-induced paronychia. We describe the first case treated with topical timolol for a trametinib-induced paronychia in a pediatric patient that allowed to continue the third line antineoplastic therapy for his glioma.

Keywords: induced paronychia; timolol; trametinib.

Publication types

  • Case Reports
  • Letter

MeSH terms

  • Administration, Topical
  • Adrenergic beta-Antagonists / administration & dosage
  • Antineoplastic Agents / administration & dosage
  • Antineoplastic Agents / adverse effects*
  • Child, Preschool
  • Glioma / drug therapy
  • Humans
  • Male
  • Paronychia / chemically induced
  • Paronychia / drug therapy*
  • Protein Kinase Inhibitors / administration & dosage
  • Protein Kinase Inhibitors / adverse effects
  • Pyridones / administration & dosage
  • Pyridones / adverse effects*
  • Pyrimidinones / administration & dosage
  • Pyrimidinones / adverse effects*
  • Timolol / administration & dosage*
  • Treatment Outcome

Substances

  • Adrenergic beta-Antagonists
  • Antineoplastic Agents
  • Protein Kinase Inhibitors
  • Pyridones
  • Pyrimidinones
  • trametinib
  • Timolol