Breakthrough in Colon Cancer Diagnosis: Genetic Mutation Detection Using Optimal Biosensing

Research conducted by a team of scientists at Fudan University Shanghai Cancer Center has led to the development of a novel genetic mutation detection method for colon cancer diagnosis. The study, published in Biosensors, employed the fluorescence-based long block displacement amplification (LBDA) sensing method to identify KRAS mutations in colorectal cancer patients. This breakthrough has the potential to advance personalized diagnosis and treatment of the disease, providing a more efficient and cost-effective solution.

Key Takeaways:

• The research identified APC, TP53, and KRAS as the most frequently mutated genes in colorectal cancer cases from The Cancer Genome Atlas and Chinese patient samples.
• The LBDA method achieved a detection limit of 0.08% variant allele frequency with 20 ng of synthetic DNA input.
• The study evaluated the clinical performance of the LBDA method on 118 tissue samples from 59 CRC patients and obtained 88% sensitivity and 100% specificity.
• The LBDA method successfully identified KRAS mutations in 37.29% of cases, closely matching results obtained by next-generation sequencing.
• The research used a biosensing platform that offers strong potential for advancing personalized CRC diagnosis and treatment.
• The study built upon research funded by the National Key R&D Program of China, National Natural Science Foundation of China, Fundamental Research Funds For The Central Universities, and Shanghai Science And Technology Committee.

Statistics:

• 751 CRC cases were analyzed from The Cancer Genome Atlas and 131 Chinese patient samples.
• 59 CRC tumor samples were used to evaluate the clinical performance of the LBDA method.
• 37.29% of cases were identified with KRAS mutations using the LBDA method.
• 88% sensitivity and 100% specificity were achieved with the LBDA method.
• The detection limit of the LBDA method was 0.08% variant allele frequency.

Sources:

• Analysis of Colorectal Cancer Gene Mutations and Application of Long Blocker Displacement Amplification Technology for High-Throughput Mutation Detection. Biosensors, 2025, 15(5):308.
• Ping Lu et al., Fudan University Shanghai Cancer Center, "Research Results from Fudan University Shanghai Cancer Center Update Knowledge of Colon Cancer (Analysis of Colorectal Cancer Gene Mutations and Application of Long Blocker Displacement Amplification Technology for High-Throughput Mutation ...)", Cancer Weekly, 2025, p 1172.
• Biosensors, http://www.mdpi.com/journal/biosensors (publisher: MDPI AG).
• Cancer Weekly, a free source of news articles related to cancer research.