Analysis Overview
Ovarian Serous Cystadenocarcinoma (Primary solid tumor)
17 October 2017  |  None
Maintainer Information
Maintained by Broad Institute GDAC (Broad Institute of MIT & Harvard)
Overview
Introduction

This is an overview of Ovarian Serous Cystadenocarcinoma analysis pipelines from FireCloud run "17 October 2017".

Summary

Note: These results are offered to the community as an additional reference point, enabling a wide range of cancer biologists, clinical investigators, and genome and computational scientists to easily incorporate TCGA into the backdrop of ongoing research. While every effort is made to ensure that FireCloud input data and algorithms are of the highest possible quality, these analyses have not been reviewed by domain experts.

Results
  • Sequence and Copy Number Analyses

    • SNP6 Copy number analysis (GISTIC2)
      View Report | There were 568 tumor samples used in this analysis: 35 significant arm-level results, 27 significant focal amplifications, and 33 significant focal deletions were found.

  • Correlations to Clinical Parameters

    • Correlation between aggregated molecular cancer subtypes and selected clinical features
      View Report | Testing the association between subtypes identified by 8 different clustering approaches and 8 clinical features across 579 patients, 6 significant findings detected with P value < 0.05 and Q value < 0.25.

    • Correlation between copy number variation genes (focal events) and selected clinical features
      View Report | Testing the association between copy number variation 60 focal events and 8 clinical features across 564 patients, 10 significant findings detected with Q value < 0.25.

    • Correlation between copy number variations of arm-level result and selected clinical features
      View Report | Testing the association between copy number variation 82 arm-level events and 8 clinical features across 564 patients, 37 significant findings detected with Q value < 0.25.

    • Correlation between mRNAseq expression and clinical features
      View Report | Testing the association between 19021 genes and 7 clinical features across 374 samples, statistically thresholded by P value < 0.05 and Q value < 0.3, 2 clinical features related to at least one genes.

  • Clustering Analyses

    • Clustering of copy number data by focal peak region with absolute value: consensus NMF
      View Report | The most robust consensus NMF clustering of 564 samples using the 60 most variable genes was identified for k = 5 clusters. We computed the clustering for k = 2 to k = 10 and used the cophenetic correlation coefficient and the average silhouette width calculation to determine the robust clusters.

    • Clustering of copy number data by peak region with threshold value: consensus NMF
      View Report | The most robust consensus NMF clustering of 564 samples using the 60 most variable genes was identified for k = 4 clusters. We computed the clustering for k = 2 to k = 10 and used the cophenetic correlation coefficient and the average silhouette width calculation to determine the robust clusters.

    • Clustering of lincRNA expression: consensus hierarchical
      View Report | Median absolute deviation (MAD) was used to select 2500 most variable lincRNAs. Consensus ward linkage hierarchical clustering of 373 samples and 2500 lincRNAs identified 3 subtypes with the stability of the clustering increasing for k = 2 to k = 10.

    • Clustering of lincRNA expression: consensus NMF
      View Report | The most robust consensus NMF clustering of 374 samples using the 2500 most variable lincRNAs was identified for k = 3 clusters. We computed the clustering for k = 2 to k = 10 and used the cophenetic correlation coefficient and the average silhouette width calculation to determine the robust clusters.

    • Clustering of miR mature expression: consensus hierarchical
      View Report | Median absolute deviation (MAD) was used to select 254 most variable miRs. Consensus ward linkage hierarchical clustering of 488 samples and 254 miRs identified 5 subtypes with the stability of the clustering increasing for k = 2 to k = 10.

    • Clustering of miR mature expression: consensus NMF
      View Report | The most robust consensus NMF clustering of 489 samples using the 254 most variable miRs was identified for k = 4 clusters. We computed the clustering for k = 2 to k = 10 and used the cophenetic correlation coefficient and the average silhouette width calculation to determine the robust clusters.

    • Clustering of protein coding gene expression: consensus NMF
      View Report | The most robust consensus NMF clustering of 374 samples using the 2500 most variable genes was identified for k = 4 clusters. We computed the clustering for k = 2 to k = 10 and used the cophenetic correlation coefficient and the average silhouette width calculation to determine the robust clusters.

    • Clustering of Protein-coding gene expression: consensus hierarchical
      View Report | Median absolute deviation (MAD) was used to select 2500 most variable genes. Consensus ward linkage hierarchical clustering of 373 samples and 2500 genes identified 3 subtypes with the stability of the clustering increasing for k = 2 to k = 10.

  • Other Analyses

    • Identification of putative miR direct targets by sequencing data
      View Report | The CLR algorithm was applied on 732 miRs and 19021 mRNAs across 371 samples. After 2 filtering steps, the number of 44 miR:gene pairs were detected.

    • Methylation__HM27_Clustering_CNMF
      View Report | The most robust consensus NMF clustering of 581 samples using the 2414 most variable genes was identified for k = 3 clusters. We computed the clustering for k = 2 to k = 10 and used the cophenetic correlation coefficient and the average silhouette width calculation to determine the robust clusters.

  • Other Correlation Analyses

    • Correlation between copy number variation genes (focal events) and molecular subtypes
      View Report | Testing the association between copy number variation 60 focal events and 8 molecular subtypes across 564 patients, 189 significant findings detected with P value < 0.05 and Q value < 0.25.

    • Correlation between copy number variations of arm-level result and molecular subtypes
      View Report | Testing the association between copy number variation 82 arm-level events and 8 molecular subtypes across 564 patients, 195 significant findings detected with P value < 0.05 and Q value < 0.25.

Methods & Data
Input
  • Summary Report Date = Thu Dec 14 14:02:29 2017

  • Protection = FALSE