Oral lichenoid drug eruption due to osimertinib for lung cancer.
J Oncol Pharm Pract
; : 10781552241268693, 2024 Aug 01.
Article
in En
| MEDLINE
| ID: mdl-39090853
ABSTRACT
INTRODUCTION:
Epidermal growth factor receptor-tyrosine kinase inhibitors (EGFR) are linked with side effects involving skin and mucosa. Herein, we present a unique case of oral lichenoid drug eruption (LDE) in a patient treated with osimertinib. CASE REPORT A 75-year-old woman was diagnosed with metastatic EGFR-mutated lung adenocarcinoma, and started on osimertinib 80â mg PO daily. At 24 months of therapy, the patient developed a painful, red, and white striated oral lesion involving the left buccal mucosa and the adjacent buccal aspect of gingivae. Biopsy showed oral LDE. Causality assessment between osimertinib and the oral LDE via Naranjo Adverse Drug Reaction probability scale revealed a score of 5. MANAGEMENT ANDOUTCOME:
Osimetinib discontinuation was not felt to be in the best interest of the patient. Therefore, diphenhydramine HCL mouthwash every 6â h PRN (before meals) was started. Spicy and hot foods were discontinued. At a four-week follow-up visit, the patient reported moderate improvement in her symptoms.CONCLUSION:
Oral LDEs are considered premalignant lesions as they can transform into squamous cell carcinoma; therefore, regular follow-up is needed. Awareness of this potential side effect of osimertinib would also prevent unnecessary (and potentially costly) work-up and lead to its prompt diagnosis and treatment.
Full text:
1
Collection:
01-internacional
Database:
MEDLINE
Language:
En
Journal:
J Oncol Pharm Pract
/
J. oncol. pharm. pract. (Online)
/
Journal of oncology pharmacy practice (Online)
Journal subject:
FARMACIA
Year:
2024
Document type:
Article
Affiliation country:
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