Third-line trabectedin for a metastatic desmoplastic small round cell tumour treated with multimodal therapy.

Background: Desmoplastic small round cell tumour (DSRCT) is a rare and aggressive cancer that usually develops in the peritoneal cavity of young males. Its prognosis is dismal, with current treatment options including the combination of multi-agent chemotherapy, aggressive surgery, radiation therapy, and autologous stem cell transplantation. Hyperthermic intraperitoneal chemotherapy (HIPEC) may also be an option.

Case Report: Herein we report the administration of the marine-derived multi-target antineoplastic agent, trabectedin, in a patient with DSRCT, heavily pre-treated with conventional multi-agent chemotherapy, HIPEC, and surgery.

Results: The patient achieved a prolonged partial response and an extended period of stable disease with third-line trabectedin, following disease progression after conventional multi-agent chemotherapy, HIPEC, and surgery.

Conclusion: Trabectedin may be a treatment option in multimodal therapy for the management of DSRCT and warrants further research to explore the impact of trabectedin in the treatment of this disease.