Inter and intra - tumor heterogeneity in Colorectal Cancer

We used high depth massive parallel sequencing analyses to study 27 CRC (colorectal cancer) patients, with a total of 97 tumors (both primary and matched metastases) in addition to healthy control samples. We found inter-tumor concordance for coding mutations; in contrast, gene copy numbers were found to be highly discordant between primary tumors and metastases as validated by fluorescent in-situ hybridization. in a further step, we dissected a single tumor into 68 spatially defined samples and sequenced them separately. Here we identify evenly distributed coding mutations in APC and TP53 in all tumor areas, yet highly variable gene copy numbers in numerous genes.

Type: Other
Archiver: European Genome-Phenome Archive (EGA)

1 Dataset 1 Publication

Click on a Dataset ID in the table below to learn more, and to find out who to contact about access to these data

Dataset ID	Description	Technology	Samples
EGAD00001003131	The dataset consists of two main sample groups. 1) The inter-tumour sample group contains a total of 97 samples from 27 patients. Each patient has a single normal and primary sample as well as one or more metastases. All samples were sequenced using IonTorrent PGM and a custom colorectal cancer (CRC) panel. 2) The intra-tumour sample group contains a total of 68 samples from a single tumour as well as a normal tissue sample. All 68 samples were sequenced using IonTorrent PGM and a custom CRC panel. Shallow whole genome sequencing was additionally applied to 10 of the samples using Illumina HiSeq 4000.	Illumina HiSeq 4000 Ion Torrent PGM	193

Publications	Citations
DNA copy number changes define spatial patterns of heterogeneity in colorectal cancer. Mamlouk S, Childs LH, Aust D, Heim D, Melching F, Oliveira C, Wolf T, Durek P, Schumacher D, Bläker H, von Winterfeld M, Gastl B, Möhr K, Menne A, Zeugner S, Redmer T, Lenze D, Tierling S, Möbs M, Weichert W, Folprecht G, Blanc E, Beule D, Schäfer R, Morkel M, Klauschen F, Leser U, Sers C. Nat Commun 8: 2017 14093	59

Publications

Citations

DNA copy number changes define spatial patterns of heterogeneity in colorectal cancer.
Mamlouk S, Childs LH, Aust D, Heim D, Melching F, Oliveira C, Wolf T, Durek P, Schumacher D, Bläker H, von Winterfeld M, Gastl B, Möhr K, Menne A, Zeugner S, Redmer T, Lenze D, Tierling S, Möbs M, Weichert W, Folprecht G, Blanc E, Beule D, Schäfer R, Morkel M, Klauschen F, Leser U, Sers C. Nat Commun 8: 2017 14093