SWI/SNF-deficient malignancies of the female genital tract

Area of Science:

• Oncology
• Molecular Biology
• Genetics

Background:

• SWI/SNF chromatin remodelling complex mutations are prevalent in numerous cancers.
• These mutations are frequently observed in malignancies of the female reproductive system.

Purpose of the Study:

• To review the role of SWI/SNF complex gene mutations in female genital tract cancers.
• To highlight specific genes like ARID1A and SMARCA4 and their association with gynecologic neoplasms.

Main Methods:

• Literature review of studies investigating SWI/SNF complex mutations in gynecologic cancers.
• Analysis of mutation data for genes including ARID1A, SMARCA4, SMARCB1, and ARID1B.
• Correlation of genetic alterations with specific tumor types and protein expression.

Main Results:

• ARID1A mutations are common in uterine corpus and ovarian endometrioid and clear cell carcinomas, and endometriosis-associated neoplasms.
• SMARCA4 mutations are nearly ubiquitous in small cell carcinoma of the ovary, hypercalcaemic type (SCCOHT).
• SWI/SNF deficiencies are found in undifferentiated carcinomas, sarcomas, and other rare gynecologic malignancies.

Conclusions:

• SWI/SNF complex gene mutations are significant molecular events in a broad spectrum of female genital tract malignancies.
• Loss of protein expression serves as a reliable indicator of underlying SWI/SNF gene mutations.
• Understanding these mutations aids in classifying and potentially targeting gynecologic cancers.