Related Experiment Video
Updated: Jun 30, 2026
Determining Bile Duct Density in the Mouse Liver
Published on: April 30, 2019
SMARCA4-Deficient Undifferentiated Gallbladder Cancer: A Case Report and Review of the Literature
Xiaoting Ma1, Xinyuan Long1, Fang Song1
1Department of Pathology, The Affiliated Suzhou Hospital of Nanjing Medical University, Suzhou Municipal Hospital, Suzhou, Jiangsu, P.R. China.
Abstract:
Nonsense mutations or inactivation of SMARCA4 (BRG1) are associated with the histological manifestations of many undifferentiated tumors in humans. However, the relationship between SMARCA4 mutations and undifferentiated gallbladder cancer needs to be further elucidated. SMARCA4-deficient undifferentiated gallbladder cancer is a rare and highly malignant tumor. We present a patient with SMARCA4-deficient undifferentiated gallbladder cancer with genetic testing of related genes that revealed mutations at 2 loci. There are currently very few reports related to this tumor worldwide, and protocols for diagnosis and treatment are limited. Therefore, we collected and analyzed clinical data from this patient, along with relevant literature, to create a comprehensive summary.
Insights
SMARCA4 (BRG1) gene mutations are linked to undifferentiated tumors. This case study examines a rare SMARCA4-deficient undifferentiated gallbladder cancer, highlighting diagnostic and treatment limitations.
Area of Science:
- Oncology
- Genetics
- Pathology
Background:
- SMARCA4 (BRG1) gene inactivation is implicated in various undifferentiated human tumors.
- The specific role of SMARCA4 mutations in undifferentiated gallbladder cancer remains poorly understood.
- SMARCA4-deficient undifferentiated gallbladder cancer is a rare, aggressive malignancy.
Purpose of the Study:
- To elucidate the relationship between SMARCA4 mutations and undifferentiated gallbladder cancer.
- To present a clinical case of SMARCA4-deficient undifferentiated gallbladder cancer.
- To provide a comprehensive summary by analyzing a patient's data and relevant literature due to limited existing reports.
Main Methods:
- Case report of a patient diagnosed with SMARCA4-deficient undifferentiated gallbladder cancer.
- Genetic testing performed to identify mutations in related genes, revealing alterations at two loci.
- Literature review to gather and analyze existing data on this rare tumor type.
Main Results:
- Identification of a patient with SMARCA4-deficient undifferentiated gallbladder cancer.
- Genetic analysis revealed mutations at two specific loci in the patient's tumor.
- Confirmation of the rarity of this condition, with limited global reports and established diagnostic/treatment protocols.
Conclusions:
- SMARCA4 deficiency is associated with a rare and highly malignant form of undifferentiated gallbladder cancer.
- This case underscores the need for further research into the genetic basis and clinical behavior of this tumor.
- Limited diagnostic and treatment guidelines necessitate comprehensive case reporting and literature analysis.
