Combined 177Lu-FAP-2286 Therapy and Chemotherapy in Extraskeletal Ewing Sarcoma With Multiple Metastases.

Mou, Lixian; Yao, Zhihan; Zheng, Wenlu; Zhang, Chunyin; Chen, Yue · Clin Nucl Med · 2026

case_report · Level V

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Abstract

A 23-year-old man with metastatic extraskeletal Ewing sarcoma, who was unable to tolerate standard-dose chemotherapy, received 1 cycle of 177Lu-FAP-2286, followed by 2 cycles of reduced-dose ifosfamide/epirubicin/mesna chemotherapy. Follow-up 68Ga-FAP-2286 PET/CT at 2 months showed a marked metabolic response with reduced tumor size and tracer uptake. No adverse events were observed. The patient remained symptom-free at 2 months. This case suggests that 177Lu-FAP-2286 combined with chemotherapy may have clinical utility in advanced Ewing sarcoma.

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