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ArticleHead and neck pathology2025

Primary Laryngeal Squamous Cell Carcinoma with DEK::AFF2 Fusion: The First Case Report.

Alan Yan-Lun Huang, Ying-Ju Kuo, Muh-Hwa Yang, Shyh-Kuan Tai, Jen-Fan Hang

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Article in Head and neck pathology, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 1 paper.

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1 · What the graph read from it

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3 · Its place in the literature

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1 citing paper in PubMed.

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4 · The record

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5 · Who and what money

Authors and funding

5 authors.

Alan Yan-Lun HuangDepartment of Pathology and Laboratory Medicine, Taipei Veterans General Hospital, No. 201, Sec. 2, Shipai Rd, Taipei City, 112201, Taiwan.
Ying-Ju KuoDepartment of Pathology and Laboratory Medicine, Taipei Veterans General Hospital, No. 201, Sec. 2, Shipai Rd, Taipei City, 112201, Taiwan.ORCID http://orcid.org/0000-0003-4408-8588
Muh-Hwa YangInstitute of Clinical Medicine, National Yang Ming Chiao Tung University, Taipei, Taiwan.ORCID http://orcid.org/0000-0002-8918-1244
Shyh-Kuan Tai *School of Medicine, National Yang Ming Chiao Tung University, Taipei, Taiwan. sktai@vghtpe.gov.tw.ORCID http://orcid.org/0000-0001-5644-3589
Jen-Fan HangDepartment of Pathology and Laboratory Medicine, Taipei Veterans General Hospital, No. 201, Sec. 2, Shipai Rd, Taipei City, 112201, Taiwan. jfhang@vghtpe.gov.tw.ORCID http://orcid.org/0000-0003-4299-2784

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundDEK::AFF2 fusion squamous cell carcinoma (SCC) is a rare and aggressive subtype of non-keratinizing SCC. Previously reported cases have predominantly involved the sinonasal tract, middle ear, and skull base. To date, only 62 cases have been described, with rare exceptions including a primary lung tumor and a recurrent tumor in the trachea.

methodsWe describe the first documented case of primary laryngeal SCC harboring a DEK::AFF2 fusion in a 64-year-old female who presented with progressive hoarseness and airway obstruction. Clinical, radiologic, histopathologic, immunohistochemical, and molecular analyses were performed to characterize the tumor.

resultsImaging and laryngoscopic evaluation revealed a transglottic mass. Histopathology demonstrated non-keratinizing SCC composed of monotonous tumor cells with an infiltrative growth pattern. Immunohistochemistry showed diffuse p40 positivity and moderate to strong nuclear AFF2 expression. The DEK::AFF2 fusion was confirmed by fluorescence in situ hybridization and reverse transcription polymerase chain reaction. The patient underwent total laryngectomy followed by adjuvant chemoradiotherapy and remains disease-free at 12 months of follow-up.

conclusionsThis case expands the known anatomical distribution of DEK::AFF2 fusion SCC to include the larynx, suggesting that this rare entity may arise throughout the respiratory tract epithelium. Recognition of this fusion is important in the differential diagnosis of non-keratinizing SCCs across the respiratory tract.

Indexed as

Carcinoma, Squamous CellChromosomal Proteins, Non-HistoneLaryngeal NeoplasmsOncogene ProteinsOncogene Proteins, FusionFemaleHumansMiddle AgedPoly-ADP-Ribose Binding ProteinsSquamous Cell Carcinoma of Head and NeckChromosomal Proteins, Non-HistoneDEK protein, humanOncogene ProteinsOncogene Proteins, FusionPoly-ADP-Ribose Binding ProteinsDEK:AFF2 FusionLarynxNon-keratinizingSquamous cell carcinoma

Identifiers

PMID40299135
PMCPMC12040765

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