Human papillomavirus integration perspective in small cell cervical carcinoma

Area of Science:

• Oncology
• Genomics
• Virology

Background:

• Small cell cervical carcinoma (SCCC) is a rare and aggressive malignancy.
• Understanding the molecular drivers of SCCC is crucial for developing effective treatments.

Purpose of the Study:

• To investigate the human papillomavirus (HPV) features and genomic landscape of SCCC.
• To identify potential molecular targets for diagnosis and therapy.

Main Methods:

• High-throughput HPV captured sequencing
• Whole-genome sequencing
• Whole-transcriptome sequencing
• OncoScan microarrays

Main Results:

• HPV18 infections and integrations were frequently detected.
• MYC family genes, SOX, NR4A, and ANKRD family genes were identified as HPV integration hotspots.
• Three HPV integration patterns were observed: oncogene duplication, gene fusions, and gene activation via viral LCRs.
• Focal copy number alterations (CNAs) amplified canonical cancer genes, including HPV-integrated hotspots.

Conclusions:

• HPV integration plays a significant role in SCCC pathogenesis.
• The identified HPV integration patterns and amplified cancer genes provide potential molecular criteria for SCCC diagnosis and targeted therapies.