by fluorescence in situ hybridization. Computed tomography imaging revealed lesions in keeping with small-volume lung and liver metastases and bilateral ovarian metastases.The patient was therefore started on first-line systemic therapy for metastatic breast cancer, using nanoparticle albumin bound (nab)-paclitaxel 260 mg/m 2 intravenously every 21 days. She initially tolerated the nab-paclitaxel well, with toxicities limited to alopecia and mild fatigue. After the third infusion, she developed a new skin eruption consisting of several ill-defined erythematous papules located symmetrically over the extensor surfaces of her arms. No pruritus, pain, or constitutional symptoms accompanied these skin lesions. In addition, the patient had no history of a known inciting exposure, significant sun exposure, or local trauma. She had no past history of photosensitivity, dermatoses, smoking, or rheumatic disease.The skin lesions progressed over the subsequent weeks, though the patient remained otherwise asymptomatic. At the assessment preceding the patient's 5th cycle of nab-paclitaxel, the skin eruption was noted to have progressed dramatically. Physical examination now showed a symmetrical, photodistributed rash involving the extensor surfaces of both arms and hands, as well as the anterior chest (Figure 1). The skin lesions were psoriasiform and consisted of erythematous papules coalescing into plaques with overlying scale (Figure 2). No demonstrable mucous membrane involvement, nail changes, or other skin lesions were evident. The remainder of the physical examination was remarkable only for findings of the known breast cancer.The current eruption was felt, clinically, to be in keeping with subacute cutaneous lupus erythematosus (scle). Upon review, the patient was not taking any medications known to be associated with scle. Her chronic medications included losartan, atorvastatin, and pantoprazole. In addition to nabpaclitaxel, she had recently used metoclopramide as needed for nausea.
ABSTRACTDrug-induced lupus erythematosus (dile) syndromes are documented complications of chemotherapeutic agents, including paclitaxel. Subacute cutaneous lupus erythematosus (scle) is a distinct dile syndrome presenting with characteristic annular or papulosquamous skin lesions in a photosensitive distribution with associated high anti-ssa titres. Previously, dile syndromes complicating paclitaxel therapy have been attributed to polyethoxylated castor oil (Kolliphor EL: BASF, Ludwigshafen, Germany), the biologic solvent included in the drug's original formulation (Taxol: Bristol-Myers Squibb, Montreal, QC), rather than the parent chemotherapy molecule. Here, we report a characteristic case of drug-induced scle complicating treatment with nanoparticle albumin bound (nab)-paclitaxel (Abraxane: Celgene, Summit, NJ, U.S.A.), a solvent-free taxane formulation. The pertinent English-language literature is also discussed. This case report is the first to link solvent-free paclitaxel with scle, and it suggests that the parent molecule is respo...