Skin Cutaneous Melanoma: Correlation between copy number variation genes and molecular subtypes
(NRAS_Hotspot_Mutants cohort)
Maintained by TCGA GDAC Team (Broad Institute/MD Anderson Cancer Center/Harvard Medical School)
Overview
Introduction

This pipeline computes the correlation between significant copy number variation (cnv) genes and molecular subtypes.

Summary

Testing the association between copy number variation of 33 peak regions and 8 molecular subtypes across 62 patients, 6 significant findings detected with Q value < 0.25.

  • Amp Peak 8(12q15) cnvs correlated to 'CN_CNMF'.

  • Del Peak 3(5q31.1) cnvs correlated to 'METHLYATION_CNMF'.

  • Del Peak 4(5q31.1) cnvs correlated to 'METHLYATION_CNMF'.

  • Del Peak 5(6q16.3) cnvs correlated to 'CN_CNMF'.

  • Del Peak 6(6q22.31) cnvs correlated to 'CN_CNMF'.

  • Del Peak 7(6q26) cnvs correlated to 'CN_CNMF'.

Results
Overview of the results

Table 1.  Get Full Table Overview of the association between significant copy number variation of 33 regions and 8 molecular subtypes. Shown in the table are P values (Q values). Thresholded by Q value < 0.25, 6 significant findings detected.

Molecular
subtypes
CN
CNMF
METHLYATION
CNMF
RPPA
CNMF
RPPA
CHIERARCHICAL
MRNASEQ
CNMF
MRNASEQ
CHIERARCHICAL
MIRSEQ
CNMF
MIRSEQ
CHIERARCHICAL
nCNV (%) nWild-Type Fisher's exact test Fisher's exact test Fisher's exact test Chi-square test Fisher's exact test Fisher's exact test Fisher's exact test Fisher's exact test
Amp Peak 8(12q15) 9 (15%) 53 0.000105
(0.0277)
0.905
(1.00)
0.407
(1.00)
0.431
(1.00)
0.445
(1.00)
0.537
(1.00)
0.106
(1.00)
0.13
(1.00)
Del Peak 3(5q31 1) 28 (45%) 34 0.00169
(0.431)
0.000127
(0.0333)
1
(1.00)
0.694
(1.00)
0.18
(1.00)
0.0691
(1.00)
0.862
(1.00)
0.196
(1.00)
Del Peak 4(5q31 1) 28 (45%) 34 0.00169
(0.431)
0.000127
(0.0333)
1
(1.00)
0.694
(1.00)
0.18
(1.00)
0.0691
(1.00)
0.862
(1.00)
0.196
(1.00)
Del Peak 5(6q16 3) 42 (68%) 20 7.16e-06
(0.00189)
0.889
(1.00)
0.741
(1.00)
0.822
(1.00)
0.0401
(1.00)
0.0408
(1.00)
0.106
(1.00)
0.01
(1.00)
Del Peak 6(6q22 31) 43 (69%) 19 0.000182
(0.0472)
0.885
(1.00)
0.501
(1.00)
0.907
(1.00)
0.163
(1.00)
0.227
(1.00)
0.0656
(1.00)
0.00471
(1.00)
Del Peak 7(6q26) 44 (71%) 18 0.000126
(0.0329)
0.685
(1.00)
0.501
(1.00)
0.907
(1.00)
0.26
(1.00)
0.326
(1.00)
0.0349
(1.00)
0.00168
(0.43)
Amp Peak 1(1p13 2) 21 (34%) 41 0.287
(1.00)
0.561
(1.00)
1
(1.00)
0.71
(1.00)
0.792
(1.00)
0.353
(1.00)
0.626
(1.00)
0.0666
(1.00)
Amp Peak 2(1q31 2) 37 (60%) 25 0.0271
(1.00)
0.65
(1.00)
0.748
(1.00)
0.487
(1.00)
0.204
(1.00)
0.64
(1.00)
0.25
(1.00)
0.332
(1.00)
Amp Peak 3(1q44) 38 (61%) 24 0.0284
(1.00)
0.415
(1.00)
0.748
(1.00)
0.372
(1.00)
0.166
(1.00)
0.636
(1.00)
0.257
(1.00)
0.163
(1.00)
Amp Peak 4(5p15 33) 13 (21%) 49 0.839
(1.00)
0.859
(1.00)
1
(1.00)
0.306
(1.00)
0.498
(1.00)
0.67
(1.00)
0.689
(1.00)
0.719
(1.00)
Amp Peak 5(6p25 1) 46 (74%) 16 0.00463
(1.00)
0.0421
(1.00)
0.716
(1.00)
0.966
(1.00)
0.273
(1.00)
0.81
(1.00)
0.041
(1.00)
0.00213
(0.539)
Amp Peak 6(7p21 3) 22 (35%) 40 0.228
(1.00)
0.167
(1.00)
0.501
(1.00)
0.508
(1.00)
0.4
(1.00)
0.706
(1.00)
0.00129
(0.332)
0.026
(1.00)
Amp Peak 7(11q14 1) 10 (16%) 52 1
(1.00)
0.911
(1.00)
1
(1.00)
0.352
(1.00)
1
(1.00)
0.904
(1.00)
0.289
(1.00)
0.673
(1.00)
Amp Peak 9(15q26 1) 18 (29%) 44 0.12
(1.00)
0.602
(1.00)
0.451
(1.00)
0.539
(1.00)
0.226
(1.00)
0.326
(1.00)
0.122
(1.00)
0.91
(1.00)
Amp Peak 10(17q25 3) 25 (40%) 37 0.0594
(1.00)
0.421
(1.00)
1
(1.00)
0.0979
(1.00)
0.467
(1.00)
0.64
(1.00)
0.172
(1.00)
0.0567
(1.00)
Amp Peak 11(20q13 2) 28 (45%) 34 0.0122
(1.00)
0.0883
(1.00)
1
(1.00)
0.469
(1.00)
0.53
(1.00)
0.579
(1.00)
0.303
(1.00)
0.46
(1.00)
Amp Peak 12(22q13 2) 23 (37%) 39 0.00304
(0.767)
0.573
(1.00)
0.731
(1.00)
0.274
(1.00)
0.895
(1.00)
0.595
(1.00)
0.183
(1.00)
0.135
(1.00)
Del Peak 1(1p36 13) 15 (24%) 47 0.748
(1.00)
0.0115
(1.00)
0.48
(1.00)
0.1
(1.00)
0.37
(1.00)
0.0934
(1.00)
0.889
(1.00)
1
(1.00)
Del Peak 2(4q34 3) 15 (24%) 47 0.00807
(1.00)
0.569
(1.00)
0.0436
(1.00)
0.0593
(1.00)
0.0914
(1.00)
0.0638
(1.00)
0.0134
(1.00)
0.00746
(1.00)
Del Peak 8(7q31 1) 11 (18%) 51 0.585
(1.00)
0.162
(1.00)
1
(1.00)
0.128
(1.00)
0.778
(1.00)
0.757
(1.00)
0.649
(1.00)
0.547
(1.00)
Del Peak 9(9p23) 47 (76%) 15 0.176
(1.00)
0.176
(1.00)
1
(1.00)
0.139
(1.00)
0.239
(1.00)
0.42
(1.00)
0.889
(1.00)
0.116
(1.00)
Del Peak 10(9p21 3) 52 (84%) 10 0.0842
(1.00)
0.517
(1.00)
1
(1.00)
0.371
(1.00)
0.0913
(1.00)
0.146
(1.00)
0.722
(1.00)
0.12
(1.00)
Del Peak 11(10p15 3) 34 (55%) 28 0.0477
(1.00)
0.176
(1.00)
1
(1.00)
0.524
(1.00)
0.145
(1.00)
0.226
(1.00)
0.59
(1.00)
0.231
(1.00)
Del Peak 12(10q23 31) 36 (58%) 26 0.202
(1.00)
0.69
(1.00)
0.752
(1.00)
0.201
(1.00)
0.149
(1.00)
0.247
(1.00)
0.321
(1.00)
0.0853
(1.00)
Del Peak 13(11q24 2) 42 (68%) 20 0.484
(1.00)
0.661
(1.00)
0.501
(1.00)
0.49
(1.00)
0.786
(1.00)
0.693
(1.00)
0.582
(1.00)
0.454
(1.00)
Del Peak 14(12p12 3) 14 (23%) 48 0.766
(1.00)
0.219
(1.00)
0.127
(1.00)
0.245
(1.00)
0.59
(1.00)
1
(1.00)
0.742
(1.00)
0.725
(1.00)
Del Peak 15(12q23 3) 21 (34%) 41 0.00486
(1.00)
0.22
(1.00)
0.501
(1.00)
0.673
(1.00)
0.44
(1.00)
0.738
(1.00)
0.805
(1.00)
0.192
(1.00)
Del Peak 16(13q14 2) 9 (15%) 53 0.389
(1.00)
0.0608
(1.00)
1
(1.00)
0.419
(1.00)
0.272
(1.00)
0.537
(1.00)
0.16
(1.00)
1
(1.00)
Del Peak 17(14q31 3) 25 (40%) 37 0.00542
(1.00)
0.806
(1.00)
0.748
(1.00)
0.0325
(1.00)
0.283
(1.00)
0.169
(1.00)
0.808
(1.00)
0.0717
(1.00)
Del Peak 18(15q13 3) 19 (31%) 43 0.274
(1.00)
0.419
(1.00)
0.731
(1.00)
0.805
(1.00)
0.834
(1.00)
0.881
(1.00)
0.258
(1.00)
0.148
(1.00)
Del Peak 19(16p13 3) 12 (19%) 50 0.807
(1.00)
1
(1.00)
0.0915
(1.00)
0.623
(1.00)
0.778
(1.00)
0.772
(1.00)
0.243
(1.00)
0.0756
(1.00)
Del Peak 20(16q23 3) 20 (32%) 42 0.964
(1.00)
0.661
(1.00)
0.501
(1.00)
0.93
(1.00)
0.786
(1.00)
0.83
(1.00)
0.716
(1.00)
0.348
(1.00)
Del Peak 21(21q11 2) 15 (24%) 47 0.284
(1.00)
0.152
(1.00)
1
(1.00)
0.473
(1.00)
0.00112
(0.289)
0.111
(1.00)
0.889
(1.00)
1
(1.00)
'Amp Peak 8(12q15) mutation analysis' versus 'CN_CNMF'

P value = 0.000105 (Fisher's exact test), Q value = 0.028

Table S1.  Gene #8: 'Amp Peak 8(12q15) mutation analysis' versus Clinical Feature #1: 'CN_CNMF'

nPatients CLUS_1 CLUS_2 CLUS_3 CLUS_4
ALL 16 12 20 14
AMP PEAK 8(12Q15) MUTATED 8 0 1 0
AMP PEAK 8(12Q15) WILD-TYPE 8 12 19 14

Figure S1.  Get High-res Image Gene #8: 'Amp Peak 8(12q15) mutation analysis' versus Clinical Feature #1: 'CN_CNMF'

'Del Peak 3(5q31.1) mutation analysis' versus 'METHLYATION_CNMF'

P value = 0.000127 (Fisher's exact test), Q value = 0.033

Table S2.  Gene #15: 'Del Peak 3(5q31.1) mutation analysis' versus Clinical Feature #2: 'METHLYATION_CNMF'

nPatients CLUS_1 CLUS_2 CLUS_3
ALL 18 21 23
DEL PEAK 3(5Q31.1) MUTATED 1 13 14
DEL PEAK 3(5Q31.1) WILD-TYPE 17 8 9

Figure S2.  Get High-res Image Gene #15: 'Del Peak 3(5q31.1) mutation analysis' versus Clinical Feature #2: 'METHLYATION_CNMF'

'Del Peak 4(5q31.1) mutation analysis' versus 'METHLYATION_CNMF'

P value = 0.000127 (Fisher's exact test), Q value = 0.033

Table S3.  Gene #16: 'Del Peak 4(5q31.1) mutation analysis' versus Clinical Feature #2: 'METHLYATION_CNMF'

nPatients CLUS_1 CLUS_2 CLUS_3
ALL 18 21 23
DEL PEAK 4(5Q31.1) MUTATED 1 13 14
DEL PEAK 4(5Q31.1) WILD-TYPE 17 8 9

Figure S3.  Get High-res Image Gene #16: 'Del Peak 4(5q31.1) mutation analysis' versus Clinical Feature #2: 'METHLYATION_CNMF'

'Del Peak 5(6q16.3) mutation analysis' versus 'CN_CNMF'

P value = 7.16e-06 (Fisher's exact test), Q value = 0.0019

Table S4.  Gene #17: 'Del Peak 5(6q16.3) mutation analysis' versus Clinical Feature #1: 'CN_CNMF'

nPatients CLUS_1 CLUS_2 CLUS_3 CLUS_4
ALL 16 12 20 14
DEL PEAK 5(6Q16.3) MUTATED 15 1 16 10
DEL PEAK 5(6Q16.3) WILD-TYPE 1 11 4 4

Figure S4.  Get High-res Image Gene #17: 'Del Peak 5(6q16.3) mutation analysis' versus Clinical Feature #1: 'CN_CNMF'

'Del Peak 6(6q22.31) mutation analysis' versus 'CN_CNMF'

P value = 0.000182 (Fisher's exact test), Q value = 0.047

Table S5.  Gene #18: 'Del Peak 6(6q22.31) mutation analysis' versus Clinical Feature #1: 'CN_CNMF'

nPatients CLUS_1 CLUS_2 CLUS_3 CLUS_4
ALL 16 12 20 14
DEL PEAK 6(6Q22.31) MUTATED 14 2 17 10
DEL PEAK 6(6Q22.31) WILD-TYPE 2 10 3 4

Figure S5.  Get High-res Image Gene #18: 'Del Peak 6(6q22.31) mutation analysis' versus Clinical Feature #1: 'CN_CNMF'

'Del Peak 7(6q26) mutation analysis' versus 'CN_CNMF'

P value = 0.000126 (Fisher's exact test), Q value = 0.033

Table S6.  Gene #19: 'Del Peak 7(6q26) mutation analysis' versus Clinical Feature #1: 'CN_CNMF'

nPatients CLUS_1 CLUS_2 CLUS_3 CLUS_4
ALL 16 12 20 14
DEL PEAK 7(6Q26) MUTATED 14 2 17 11
DEL PEAK 7(6Q26) WILD-TYPE 2 10 3 3

Figure S6.  Get High-res Image Gene #19: 'Del Peak 7(6q26) mutation analysis' versus Clinical Feature #1: 'CN_CNMF'

Methods & Data
Input
  • Copy number data file = All Lesions File (all_lesions.conf_##.txt, where ## is the confidence level). The all lesions file is from GISTIC pipeline and summarizes the results from the GISTIC run. It contains data about the significant regions of amplification and deletion as well as which samples are amplified or deleted in each of these regions. The identified regions are listed down the first column, and the samples are listed across the first row, starting in column 10.

  • Molecular subtype file = SKCM-NRAS_Hotspot_Mutants.transferedmergedcluster.txt

  • Number of patients = 62

  • Number of copy number variation regions = 33

  • Number of molecular subtypes = 8

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

Fisher's exact test

For binary or multi-class clinical features (nominal or ordinal), two-tailed Fisher's exact tests (Fisher 1922) were used to estimate the P values using the 'fisher.test' function in R

Chi-square test

For multi-class clinical features (nominal or ordinal), Chi-square tests (Greenwood and Nikulin 1996) were used to estimate the P values using the 'chisq.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

This is an experimental feature. The full results of the analysis summarized in this report can be downloaded from the TCGA Data Coordination Center.

References
[1] Fisher, R.A., On the interpretation of chi-square from contingency tables, and the calculation of P, Journal of the Royal Statistical Society 85(1):87-94 (1922)
[2] Greenwood and Nikulin, A guide to chi-squared testing, Wiley, New York. ISBN 047155779X (1996)
[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)