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Minocycline-Induced Hyperpigmentation in a Patient Treated with Erlotinib for Non-Small Cell Lung Adenocarcinoma.

Case Rep Oncol. 2017 Jan-Apr;10(1):156-160

Authors: Bell AT, Roman JW, Gratrix ML, Brzezniak CE

Abstract
INTRODUCTION: While epidermal growth factor receptor (EGFR) inhibitors have improved progression-free survival in patients with non-small cell lung cancer (NSCLC), one of the most common adverse effects is papulopustular skin eruption, which is frequently severe enough to be treated with oral minocycline or doxycycline.
CASE: We present a case of an 87-year-old man who developed a severe papulopustular skin eruption secondary to erlotinib therapy for NSCLC. Control of the eruption with 100 mg of minocycline twice daily for 8 months eventually led to blue-gray skin hyperpigmentation. After 30 months, this side effect was recognized as minocycline drug deposition, which was confirmed with skin biopsy.
DISCUSSION: Compliance with EGFR inhibitor therapy in NSCLC is often challenging due to common side effects, most notably cutaneous skin eruptions. Treatment of cutaneous toxicities is important to preserve patient compliance with targeted cancer therapy. Use of minocycline to treat the most common cutaneous side effect (papulopustular eruption) can in turn cause blue-black skin, eye, or tooth discoloration that can nullify its benefits, resulting in suboptimal patient adherence to cancer therapy. Although this adverse effect is well known in dermatology literature as a risk when using minocycline to treat acne, rosacea, or blistering disorders, it is less well documented in oncology literature. We present this case to highlight the need for greater consideration of unique patient characteristics in selecting an oral antibiotic as a treatment modality for EGFR inhibitor skin toxicities.

PMID: 28413391 [PubMed]

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