Identification of Survival-Specific Genes in Clear Cell Renal Cell Carcinoma Using a Customized Next-Generation...

Area of Science:

• Oncology
• Genetics
• Molecular Biology

Background:

• Mutations are linked to cancer development, but specific survival genes in clear cell renal cell carcinoma (ccRCC) remain largely uncharacterized.
• Understanding these genes is crucial for improving patient outcomes in ccRCC.

Purpose of the Study:

• To investigate the presence and clinicopathological associations of survival-specific genes in Korean ccRCC patients.
• To validate findings using international cohorts like TCGA-KIRC and RECA-EU.

Main Methods:

• DNA extraction from ccRCC tissues followed by next-generation sequencing (NGS) using a custom 156-gene panel.
• Analysis of NGS data, correlation with clinicopathological features, and comparison with TCGA-KIRC and RECA-EU datasets.

Main Results:

• 100 mutations were identified across 37 genes in 22 ccRCC patients, with 11 genes showing clinicopathological significance.
• Six novel survival-specific genes and five top-ranked mutated genes were identified.
• CARD6 was validated as an overall survival-specific gene across Korean, TCGA-KIRC, and RECA-EU cohorts; other mutations correlated with disease-free survival, mortality, and tumor characteristics.

Conclusions:

• Eleven survival-specific genes were discovered in ccRCC, including novel candidates like CARD6, NLRP2, OBSCN, and USP40.
• This study is the first to establish a correlation between CARD6 and overall survival in ccRCC.
• These identified genes hold potential as diagnostic, prognostic, and therapeutic markers for ccRCC.