Project description:The use of Affymetrix U133 2.0 Plus chips on FFPE samples when coupled with a qPCR-based sample pre-assessment step, yielded satisfactory results from the point of view of biological reliability. When compared with the Illumina DASL WG platform, specifically designed for degraded RNA, the data generated with the Affymetrix platform showed a wider interquartile range (1.32 vs 0.57, p<2.2x10-16) suggesting a superior discriminatory power within samples as indicated by the good agreement with the immunohistiochemically derived ER status. FFPE primary breast cancer samples profiled using Illumina DASL WG platform after RNA amplification with the Nugen WT-Ovation FFPE System
Project description:The dataset includes samples of 19 patients with cutaneous melanoma, 11 samples from donors with benign nevi as well as 11 control skin samples. All DNAs were derived from FFPE material. The cutaneous melanoma and benign nevi samples were macrodissected prior to DNA isolation. For methylation profiling the MethylationEPIC array from Illumina was used.
Project description:mRNA expression in RNA isolated from formalin fixed, paraffin embedded tissue from vulvar melanoma compared to primary cutaneous melanoma.
Project description:In this experiment, FFPE samples of 41 primary cutaneous melanoma, 2 metastatic melanoma and 6 normal skin were used for DNA extraction and genotyping by Affymetrix OncoScan FFPE Assay, in order to define chromosomal alterations in copy number and loss of heterozygosity. Genomic damage was then correlated with clinical features of melanoma.
Project description:The discovery of novel protein biomarkers in melanoma is crucial. Our introduction of formalin-fixed paraffin embedded (FFPE) tumor protocol provides new opportunities to understand the progression of melanoma and open the possibility to screen tens of thousands of FFPE samples deposited in tumor biobanks and available at hospital pathology departments. In our retrospective pilot study, 90 FFPE samples from 77 patients were processed. Differential quantitative protein expression was performed by high resolution mass spectrometry. The protein expression profiles were correlated with the standardized dataset of histopathologic analysis, and longitudinal therapeutical meta-data.
