This pipeline uses various statistical tests to identify genes whose promoter methylation levels correlated to selected clinical features.
Testing the association between 20206 genes and 5 clinical features across 362 samples, statistically thresholded by Q value < 0.05, 4 clinical features related to at least one genes.
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196 genes correlated to 'AGE'.
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ANGPT4 , TUFT1 , GPR158 , LOC100271836 , HDAC11 , ...
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2564 genes correlated to 'HISTOLOGICAL.TYPE'.
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APBB1IP , SSTR1 , CRYAB , HSPB2 , CARD11 , ...
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6 genes correlated to 'RADIATIONS.RADIATION.REGIMENINDICATION'.
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MAP2K2 , GPR89A , WBP4 , FZD8 , C22ORF13 , ...
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18 genes correlated to 'COMPLETENESS.OF.RESECTION'.
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MYRIP , TRIM37 , TNFRSF19 , BICC1 , TMEM145 , ...
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No genes correlated to 'Time to Death'
Complete statistical result table is provided in Supplement Table 1
Clinical feature | Statistical test | Significant genes | Associated with | Associated with | ||
---|---|---|---|---|---|---|
Time to Death | Cox regression test | N=0 | ||||
AGE | Spearman correlation test | N=196 | older | N=61 | younger | N=135 |
HISTOLOGICAL TYPE | ANOVA test | N=2564 | ||||
RADIATIONS RADIATION REGIMENINDICATION | t test | N=6 | yes | N=6 | no | N=0 |
COMPLETENESS OF RESECTION | ANOVA test | N=18 |
Time to Death | Duration (Months) | 0-191.8 (median=16.8) |
censored | N = 318 | |
death | N = 40 | |
Significant markers | N = 0 |
AGE | Mean (SD) | 63.92 (11) |
Significant markers | N = 196 | |
pos. correlated | 61 | |
neg. correlated | 135 |
SpearmanCorr | corrP | Q | |
---|---|---|---|
ANGPT4 | 0.3543 | 4.394e-12 | 8.88e-08 |
TUFT1 | -0.3429 | 2.263e-11 | 4.57e-07 |
GPR158 | -0.3417 | 2.708e-11 | 5.47e-07 |
LOC100271836 | -0.3413 | 2.863e-11 | 5.78e-07 |
HDAC11 | -0.3351 | 6.787e-11 | 1.37e-06 |
TBC1D23 | -0.3329 | 9.103e-11 | 1.84e-06 |
GDNF | -0.3299 | 1.381e-10 | 2.79e-06 |
SLFN14 | 0.3234 | 3.31e-10 | 6.69e-06 |
GPR142 | 0.3148 | 1.005e-09 | 2.03e-05 |
CACNB1 | -0.314 | 1.123e-09 | 2.27e-05 |
HISTOLOGICAL.TYPE | Labels | N |
ENDOMETRIOID ENDOMETRIAL ADENOCARCINOMA | 267 | |
MIXED SEROUS AND ENDOMETRIOID | 17 | |
SEROUS ENDOMETRIAL ADENOCARCINOMA | 77 | |
Significant markers | N = 2564 |
ANOVA_P | Q | |
---|---|---|
APBB1IP | 1.405e-47 | 2.84e-43 |
SSTR1 | 3.603e-47 | 7.28e-43 |
CRYAB | 1.414e-40 | 2.86e-36 |
HSPB2 | 1.414e-40 | 2.86e-36 |
CARD11 | 1.563e-40 | 3.16e-36 |
ADAMTS16 | 7.949e-40 | 1.61e-35 |
PRKCB | 1.785e-38 | 3.61e-34 |
CGN | 2.142e-38 | 4.33e-34 |
KCNA6 | 9.302e-38 | 1.88e-33 |
GRIK3 | 5.288e-37 | 1.07e-32 |
6 genes related to 'RADIATIONS.RADIATION.REGIMENINDICATION'.
RADIATIONS.RADIATION.REGIMENINDICATION | Labels | N |
NO | 83 | |
YES | 279 | |
Significant markers | N = 6 | |
Higher in YES | 6 | |
Higher in NO | 0 |
T(pos if higher in 'YES') | ttestP | Q | AUC | |
---|---|---|---|---|
MAP2K2 | 5.67 | 7.412e-08 | 0.0015 | 0.6952 |
GPR89A | 5.33 | 3.242e-07 | 0.00655 | 0.7156 |
WBP4 | 5.23 | 3.969e-07 | 0.00802 | 0.6592 |
FZD8 | 4.91 | 1.931e-06 | 0.039 | 0.669 |
C22ORF13 | 4.87 | 2.4e-06 | 0.0485 | 0.6528 |
SNRPD3 | 4.87 | 2.4e-06 | 0.0485 | 0.6528 |
COMPLETENESS.OF.RESECTION | Labels | N |
R0 | 239 | |
R1 | 18 | |
R2 | 12 | |
RX | 25 | |
Significant markers | N = 18 |
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Expresson data file = UCEC-TP.meth.by_min_expr_corr.data.txt
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Clinical data file = UCEC-TP.clin.merged.picked.txt
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Number of patients = 362
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Number of genes = 20206
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Number of clinical features = 5
For survival clinical features, Wald's test in univariate Cox regression analysis with proportional hazards model (Andersen and Gill 1982) was used to estimate the P values using the 'coxph' function in R. Kaplan-Meier survival curves were plot using the four quartile subgroups of patients based on expression levels
For continuous numerical clinical features, Spearman's rank correlation coefficients (Spearman 1904) and two-tailed P values were estimated using 'cor.test' function in R
For multi-class clinical features (ordinal or nominal), one-way analysis of variance (Howell 2002) was applied to compare the log2-expression levels between different clinical classes using 'anova' function in R
For two-class clinical features, two-tailed Student's t test with unequal variance (Lehmann and Romano 2005) was applied to compare the log2-expression levels between the two clinical classes using 't.test' function in R
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.
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.