Correlation between copy number variations of arm-level result and selected clinical features
Uterine Carcinosarcoma (Primary solid tumor)
16 April 2014  |  analyses__2014_04_16
Maintainer Information
Citation Information
Maintained by TCGA GDAC Team (Broad Institute/MD Anderson Cancer Center/Harvard Medical School)
Cite as Broad Institute TCGA Genome Data Analysis Center (2014): Correlation between copy number variations of arm-level result and selected clinical features. Broad Institute of MIT and Harvard. doi:10.7908/C1HX1BCG
Overview
Introduction

This pipeline computes the correlation between significant arm-level copy number variations (cnvs) and selected clinical features.

Summary

Testing the association between copy number variation 77 arm-level events and 2 clinical features across 56 patients, no significant finding detected with Q value < 0.25.

  • No arm-level cnvs related to clinical features.

Results
Overview of the results

Table 1.  Get Full Table Overview of the association between significant copy number variation of 77 arm-level events and 2 clinical features. Shown in the table are P values (Q values). Thresholded by Q value < 0.25, no significant finding detected.

Clinical
Features
Time
to
Death
AGE
nCNV (%) nWild-Type logrank test t-test
1p gain 24 (43%) 32 0.627
(1.00)
0.187
(1.00)
1q gain 31 (55%) 25 0.328
(1.00)
0.336
(1.00)
2p gain 23 (41%) 33 0.111
(1.00)
0.902
(1.00)
2q gain 21 (38%) 35 0.778
(1.00)
0.823
(1.00)
3p gain 12 (21%) 44 0.505
(1.00)
0.402
(1.00)
3q gain 23 (41%) 33 0.684
(1.00)
0.274
(1.00)
4p gain 9 (16%) 47 0.527
(1.00)
0.807
(1.00)
4q gain 3 (5%) 53 0.852
(1.00)
0.867
(1.00)
5p gain 23 (41%) 33 0.995
(1.00)
0.673
(1.00)
5q gain 8 (14%) 48 0.921
(1.00)
0.741
(1.00)
6p gain 30 (54%) 26 0.896
(1.00)
0.154
(1.00)
6q gain 27 (48%) 29 0.948
(1.00)
0.238
(1.00)
7p gain 21 (38%) 35 0.948
(1.00)
0.149
(1.00)
7q gain 17 (30%) 39 0.743
(1.00)
0.636
(1.00)
8p gain 19 (34%) 37 0.0776
(1.00)
0.435
(1.00)
8q gain 30 (54%) 26 0.141
(1.00)
0.285
(1.00)
9p gain 6 (11%) 50 0.871
(1.00)
0.508
(1.00)
10p gain 21 (38%) 35 0.5
(1.00)
0.492
(1.00)
10q gain 17 (30%) 39 0.295
(1.00)
0.826
(1.00)
11p gain 5 (9%) 51 0.956
(1.00)
0.646
(1.00)
11q gain 7 (12%) 49 0.962
(1.00)
0.464
(1.00)
12p gain 22 (39%) 34 0.212
(1.00)
0.482
(1.00)
12q gain 11 (20%) 45 0.928
(1.00)
0.648
(1.00)
13q gain 15 (27%) 41 0.31
(1.00)
0.753
(1.00)
14q gain 7 (12%) 49 0.0221
(1.00)
0.866
(1.00)
15q gain 4 (7%) 52 0.484
(1.00)
0.0223
(1.00)
16p gain 10 (18%) 46 0.613
(1.00)
0.221
(1.00)
16q gain 6 (11%) 50 0.481
(1.00)
0.7
(1.00)
17p gain 9 (16%) 47 0.228
(1.00)
0.236
(1.00)
17q gain 18 (32%) 38 0.779
(1.00)
0.816
(1.00)
18p gain 18 (32%) 38 0.412
(1.00)
0.822
(1.00)
18q gain 14 (25%) 42 0.537
(1.00)
0.698
(1.00)
19p gain 24 (43%) 32 0.671
(1.00)
0.33
(1.00)
19q gain 28 (50%) 28 0.944
(1.00)
0.206
(1.00)
20p gain 37 (66%) 19 0.729
(1.00)
0.175
(1.00)
20q gain 44 (79%) 12 0.765
(1.00)
0.605
(1.00)
21q gain 18 (32%) 38 0.558
(1.00)
0.988
(1.00)
22q gain 8 (14%) 48 0.093
(1.00)
0.0307
(1.00)
xq gain 14 (25%) 42 0.597
(1.00)
0.221
(1.00)
1p loss 9 (16%) 47 0.761
(1.00)
0.695
(1.00)
1q loss 9 (16%) 47 0.52
(1.00)
0.498
(1.00)
3p loss 20 (36%) 36 0.19
(1.00)
0.586
(1.00)
3q loss 14 (25%) 42 0.347
(1.00)
0.394
(1.00)
4p loss 31 (55%) 25 0.325
(1.00)
0.747
(1.00)
4q loss 33 (59%) 23 0.212
(1.00)
0.802
(1.00)
5p loss 9 (16%) 47 0.0718
(1.00)
0.163
(1.00)
5q loss 18 (32%) 38 0.541
(1.00)
0.5
(1.00)
6p loss 5 (9%) 51 0.176
(1.00)
0.542
(1.00)
6q loss 7 (12%) 49 0.424
(1.00)
0.487
(1.00)
7p loss 13 (23%) 43 0.93
(1.00)
0.823
(1.00)
7q loss 13 (23%) 43 0.127
(1.00)
0.989
(1.00)
8p loss 23 (41%) 33 0.66
(1.00)
0.568
(1.00)
8q loss 9 (16%) 47 0.821
(1.00)
0.405
(1.00)
9p loss 34 (61%) 22 0.504
(1.00)
0.177
(1.00)
9q loss 39 (70%) 17 0.312
(1.00)
0.206
(1.00)
10p loss 23 (41%) 33 0.568
(1.00)
0.117
(1.00)
10q loss 21 (38%) 35 0.313
(1.00)
0.706
(1.00)
11p loss 26 (46%) 30 0.0457
(1.00)
0.158
(1.00)
11q loss 24 (43%) 32 0.537
(1.00)
0.364
(1.00)
12p loss 13 (23%) 43 0.452
(1.00)
0.953
(1.00)
12q loss 14 (25%) 42 0.387
(1.00)
0.222
(1.00)
13q loss 26 (46%) 30 0.983
(1.00)
0.655
(1.00)
14q loss 27 (48%) 29 0.517
(1.00)
0.407
(1.00)
15q loss 32 (57%) 24 0.736
(1.00)
0.598
(1.00)
16p loss 32 (57%) 24 0.539
(1.00)
0.938
(1.00)
16q loss 37 (66%) 19 0.153
(1.00)
0.884
(1.00)
17p loss 34 (61%) 22 0.159
(1.00)
0.787
(1.00)
17q loss 17 (30%) 39 0.0417
(1.00)
0.636
(1.00)
18p loss 18 (32%) 38 0.597
(1.00)
0.99
(1.00)
18q loss 20 (36%) 36 0.278
(1.00)
0.754
(1.00)
19p loss 15 (27%) 41 0.971
(1.00)
0.393
(1.00)
19q loss 13 (23%) 43 0.563
(1.00)
0.196
(1.00)
20p loss 7 (12%) 49 0.889
(1.00)
0.664
(1.00)
20q loss 4 (7%) 52 0.864
(1.00)
0.891
(1.00)
21q loss 17 (30%) 39 0.179
(1.00)
0.151
(1.00)
22q loss 33 (59%) 23 0.319
(1.00)
0.611
(1.00)
xq loss 19 (34%) 37 0.39
(1.00)
0.909
(1.00)
Methods & Data
Input
  • Copy number data file = transformed.cor.cli.txt

  • Clinical data file = UCS-TP.merged_data.txt

  • Number of patients = 56

  • Number of significantly arm-level cnvs = 77

  • Number of selected clinical features = 2

  • Exclude regions that fewer than K tumors have mutations, K = 3

Survival analysis

For survival clinical features, the Kaplan-Meier survival curves of tumors with and without gene mutations were plotted and the statistical significance P values were estimated by logrank test (Bland and Altman 2004) using the 'survdiff' function in R

Student's t-test analysis

For continuous numerical clinical features, two-tailed Student's t test with unequal variance (Lehmann and Romano 2005) was applied to compare the clinical values between tumors with and without gene mutations using 't.test' function in R

Q value calculation

For multiple hypothesis correction, Q value is the False Discovery Rate (FDR) analogue of the P value (Benjamini and Hochberg 1995), defined as the minimum FDR at which the test may be called significant. We used the 'Benjamini and Hochberg' method of 'p.adjust' function in R to convert P values into Q values.

Download Results

In addition to the links below, the full results of the analysis summarized in this report can also be downloaded programmatically using firehose_get, or interactively from either the Broad GDAC website or TCGA Data Coordination Center Portal.

References
[1] Bland and Altman, Statistics notes: The logrank test, BMJ 328(7447):1073 (2004)
[2] Lehmann and Romano, Testing Statistical Hypotheses (3E ed.), New York: Springer. ISBN 0387988645 (2005)
[3] Benjamini and Hochberg, Controlling the false discovery rate: a practical and powerful approach to multiple testing, Journal of the Royal Statistical Society Series B 59:289-300 (1995)