Cutaneous T-Cell Lymphoma, a Novel Manifestation of PDGFRA-Rearranged Neoplasm

Amir Behdad*, Pamela Allen, Xinyan Lu, Xiaolong Alan Zhou, Joan Guitart, Qing Chen, Barbara Pro

*Corresponding author for this work

Research output: Contribution to journalArticle

1 Scopus citations

Abstract

Patients with PDGFRA-rearranged hematopoietic neoplasms typically present with chronic eosinophilic leukemia and rarely with acute myeloid leukemia or T-lymphoblastic lymphoma. However, mature T-cell lymphoma has not been previously associated with PDGFRA aberrations. We report a patient who presented with simultaneous T-lymphoblastic lymphoma, focal myeloid proliferation, and cutaneous cytotoxic T-cell lymphoma refractory to chemotherapy. The presence of myeloid and lymphoid lineages prompted genetic and molecular studies. A PDGFRA rearrangement was identified in all compartments: cutaneous, lymph node, and bone marrow. Treatment with imatinib resulted in an excellent response in cutaneous and systemic disease. We report the first case of a mature cutaneous T-cell lymphoma with PDGFRA rearrangement, expanding the spectrum of neoplasms associated with this genetic abnormality. Our case underscores the great importance of recognizing PDGFRA rearrangement in unusual cases of cutaneous T-cell lymphoma, systemic lymphoid, and myeloid neoplasms. These patients may respond well to tyrosine kinase inhibitors, despite resistance to conventional chemotherapy.

Original languageEnglish (US)
Pages (from-to)610-613
Number of pages4
JournalAmerican Journal of Dermatopathology
Volume40
Issue number8
DOIs
StatePublished - Aug 1 2018

Keywords

  • PDGFRA
  • T-lymphoblastic lymphoma
  • cutaneous T-cell lymphoma
  • indolent T-lymphoblastic proliferation

ASJC Scopus subject areas

  • Pathology and Forensic Medicine
  • Dermatology

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