Early View
CASE STUDY

Congenital Spitz Melanocytoma With Activating ZKSCAN1::MET Kinase Fusion

Tzah Feldman

Corresponding Author

Tzah Feldman

Department of Pathology, Rambam Health Care Campus, Haifa, Israel

Correspondence:

Tzah Feldman ([email protected])

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Hiba Zaaroura

Hiba Zaaroura

Department of Dermatology, Rambam Health Care Campus, Haifa, Israel

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Hanaa Haj Abaya

Hanaa Haj Abaya

Department of Dermatology, Rambam Health Care Campus, Haifa, Israel

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Yaniv Zohar

Yaniv Zohar

Department of Pathology, Rambam Health Care Campus, Haifa, Israel

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Reuven Bergman

Reuven Bergman

Department of Pathology, Rambam Health Care Campus, Haifa, Israel

Department of Dermatology, Rambam Health Care Campus, Haifa, Israel

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First published: 15 July 2025

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.

Data Availability Statement

The data that support the findings of this study are available from the corresponding author upon reasonable request.

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