2024
Molecular characteristics of advanced colorectal cancer and multi-hit PIK3CA mutations
Yasin F, Sokol E, Vasan N, Pavlick D, Huang R, Pelletier M, Levy M, Pusztai L, Lacy J, Zhang J, Ross J, Cecchini M. Molecular characteristics of advanced colorectal cancer and multi-hit PIK3CA mutations. The Oncologist 2024, oyae259. PMID: 39401325, DOI: 10.1093/oncolo/oyae259.Peer-Reviewed Original ResearchAdvanced colorectal cancerPIK3CA mutationsColorectal cancerPI3K inhibitionPI3K inhibitorsBurden of colorectal cancerActivating mutationsResponse to PI3K inhibitionSensitive to PI3K inhibition.Foundation Medicine databaseMetastatic colorectal cancerClinically relevant mutationsMicrosatellite instability-highPI3K signalingTumor DNAPIK3CA variantsClinical carePIK3CA oncogeneClinical variablesE545KGenomic profilingPIK3CAE542KMedicine DatabasePatients
2023
Quantitative DNA Repair Biomarkers and Immune Profiling for Temozolomide and Olaparib in Metastatic Colorectal Cancer
Cecchini M, Zhang J, Wei W, Sklar J, Lacy J, Zhong M, Kong Y, Zhao H, DiPalermo J, Devine L, Stein S, Kortmansky J, Johung K, Bindra R, LoRusso P, Schalper K. Quantitative DNA Repair Biomarkers and Immune Profiling for Temozolomide and Olaparib in Metastatic Colorectal Cancer. Cancer Research Communications 2023, 3: 1132-1139. PMID: 37387791, PMCID: PMC10305782, DOI: 10.1158/2767-9764.crc-23-0045.Peer-Reviewed Original ResearchConceptsWhole-exome sequencingMGMT protein expressionColorectal cancerStable diseaseQuantitative immunofluorescenceT cellsProtein expressionPromoter hypermethylationLow MGMT protein expressionPARP inhibitorsRadiographic tumor regressionMetastatic colorectal cancerAdvanced colorectal cancerPretreatment tumor biopsiesEffector T cellsTumor-infiltrating lymphocytesMGMT proteinDNA repair biomarkersBaseline CD8Eligible patientsIncreased CD8Methylguanine-DNA methyltransferaseObjective responseProgressive diseaseImmune markers