TNS1- ALK Fusion in a Recurrent, Metastatic Uterine Mesenchymal Tumor Originally Diagnosed as Leiomyosarcoma

Jessica Lee, Arun Singh, Siraj M. Ali, Douglas I. Lin, Samuel J. Klempner

Abstract


Objective. We report a female patient diagnosed with a leiomyosarcoma and who harbored a druggable target as identified by comprehensive genomic profiling in the course of clinical care.

Case Report. The patient progressed five years after curative intent surgery and adjuvant treatment. After failure of multiple lines of chemotherapy,she was enrolled in a trial of an ALK inhibitor based on comprehensive genomic profiling (CGP) identifying an TNS1-ALK fusion.

Conclusion. In this case, identification of the ALK kinase fusion permitted enrollment in a matched mechanism driven clinical trial after exhausting standard of care treatment options. CGP raises the possibility of uterine inflammatory myofibroblastic tumor as an alternative diagnosisto leiomyosarcoma, highlighting the complementary role of CGP beyond immunohistochemical analyses.


Keywords


Alk; Leiomyosarcoma; IMT; Kinase Fusion; C GP

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DOI: http://dx.doi.org/10.5644/ama2006-124.248

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