Congenital Spitz Melanocytoma With Activating ZKSCAN1::MET Kinase Fusion
ABSTRACT
Congenital Spitz nevi have been rarely reported, and the diagnoses were usually based on the histopathological and immunohistochemical findings. We describe a case of a congenital Spitz tumor in which the molecular studies demonstrated a ZKSCAN1::MET fusion. No other somatic mutations and/or copy number variations outside of the MET gene were identified. Activating MET kinase rearrangements were previously reported only in a few cases of atypical Spitz tumors and spitzoid melanomas. Specifically, the ZKSCAN1::MET fusion was previously described in a single case of spitzoid melanoma demonstrating an uneventful course. Altogether, the histopathological, immunohistochemical, and molecular studies in our case supported a diagnosis of a congenital Spitz melanocytoma. This underscores the value of molecular analyses in Spitz tumors.
Conflicts of Interest
The authors declare no conflicts of interest.
Open Research
Data Availability Statement
The data that support the findings of this study are available from the corresponding author upon reasonable request.