This pipeline uses various statistical tests to identify mRNAs whose expression levels correlated to selected clinical features.
Testing the association between 18307 genes and 9 clinical features across 134 samples, statistically thresholded by Q value < 0.05, 4 clinical features related to at least one genes.
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11 genes correlated to 'GENDER'.
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USP9Y|8287 , PRKY|5616 , RPS4Y1|6192 , XIST|7503 , CYORF15A|246126 , ...
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1 gene correlated to 'LYMPH.NODE.METASTASIS'.
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TRIM25|7706
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7 genes correlated to 'NUMBER.OF.LYMPH.NODES'.
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PRR15L|79170 , C6ORF141|135398 , BAT2|7916 , TTYH1|57348 , FBXO5|26271 , ...
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7 genes correlated to 'NEOPLASM.DISEASESTAGE'.
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SLC39A5|283375 , LIMD1|8994 , BAAT|570 , PXT1|222659 , FAM35B2|439965 , ...
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No genes correlated to 'Time to Death', 'AGE', 'KARNOFSKY.PERFORMANCE.SCORE', 'NUMBERPACKYEARSSMOKED', and 'DISTANT.METASTASIS'.
Complete statistical result table is provided in Supplement Table 1
Clinical feature | Statistical test | Significant genes | Associated with | Associated with | ||
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Time to Death | Cox regression test | N=0 | ||||
AGE | Spearman correlation test | N=0 | ||||
GENDER | t test | N=11 | male | N=9 | female | N=2 |
KARNOFSKY PERFORMANCE SCORE | Spearman correlation test | N=0 | ||||
NUMBERPACKYEARSSMOKED | Spearman correlation test | N=0 | ||||
DISTANT METASTASIS | ANOVA test | N=0 | ||||
LYMPH NODE METASTASIS | ANOVA test | N=1 | ||||
NUMBER OF LYMPH NODES | Spearman correlation test | N=7 | higher number.of.lymph.nodes | N=4 | lower number.of.lymph.nodes | N=3 |
NEOPLASM DISEASESTAGE | ANOVA test | N=7 |
Time to Death | Duration (Months) | 0.1-131.2 (median=7) |
censored | N = 93 | |
death | N = 34 | |
Significant markers | N = 0 |
AGE | Mean (SD) | 67.43 (11) |
Significant markers | N = 0 |
GENDER | Labels | N |
FEMALE | 35 | |
MALE | 99 | |
Significant markers | N = 11 | |
Higher in MALE | 9 | |
Higher in FEMALE | 2 |
T(pos if higher in 'MALE') | ttestP | Q | AUC | |
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USP9Y|8287 | 35.67 | 3.32e-45 | 6.07e-41 | 1 |
PRKY|5616 | 24.81 | 1.109e-40 | 2.03e-36 | 0.9982 |
RPS4Y1|6192 | 42.28 | 1.026e-38 | 1.88e-34 | 1 |
XIST|7503 | -21.86 | 1.745e-37 | 3.19e-33 | 0.9924 |
CYORF15A|246126 | 29.8 | 5.354e-32 | 9.79e-28 | 1 |
DDX3Y|8653 | 35.53 | 5.772e-29 | 1.06e-24 | 1 |
KDM5D|8284 | 40.02 | 8.781e-29 | 1.61e-24 | 1 |
ZFY|7544 | 27.38 | 3.684e-27 | 6.74e-23 | 1 |
TSIX|9383 | -15.59 | 6.296e-23 | 1.15e-18 | 0.9873 |
NLGN4Y|22829 | 18.25 | 1.908e-22 | 3.49e-18 | 0.9885 |
No gene related to 'KARNOFSKY.PERFORMANCE.SCORE'.
KARNOFSKY.PERFORMANCE.SCORE | Mean (SD) | 78.21 (16) |
Significant markers | N = 0 |
NUMBERPACKYEARSSMOKED | Mean (SD) | 36.29 (23) |
Significant markers | N = 0 |
DISTANT.METASTASIS | Labels | N |
M0 | 77 | |
M1 | 5 | |
MX | 51 | |
Significant markers | N = 0 |
LYMPH.NODE.METASTASIS | Labels | N |
N0 | 75 | |
N1 | 14 | |
N2 | 27 | |
N3 | 5 | |
NX | 10 | |
Significant markers | N = 1 |
ANOVA_P | Q | |
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TRIM25|7706 | 6.343e-07 | 0.0116 |
NUMBER.OF.LYMPH.NODES | Mean (SD) | 1.88 (3.7) |
Significant markers | N = 7 | |
pos. correlated | 4 | |
neg. correlated | 3 |
SpearmanCorr | corrP | Q | |
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PRR15L|79170 | 0.4991 | 1.457e-07 | 0.00267 |
C6ORF141|135398 | -0.5036 | 2.674e-07 | 0.00489 |
BAT2|7916 | -0.4878 | 3.03e-07 | 0.00555 |
TTYH1|57348 | 0.4776 | 5.768e-07 | 0.0106 |
FBXO5|26271 | -0.4774 | 5.845e-07 | 0.0107 |
ANXA9|8416 | 0.4581 | 1.859e-06 | 0.034 |
ERP27|121506 | 0.4538 | 2.385e-06 | 0.0437 |
NEOPLASM.DISEASESTAGE | Labels | N |
STAGE I | 1 | |
STAGE II | 37 | |
STAGE III | 43 | |
STAGE IV | 48 | |
Significant markers | N = 7 |
ANOVA_P | Q | |
---|---|---|
SLC39A5|283375 | 5.365e-09 | 9.82e-05 |
LIMD1|8994 | 6.675e-09 | 0.000122 |
BAAT|570 | 7.634e-09 | 0.00014 |
PXT1|222659 | 4.345e-08 | 0.000795 |
FAM35B2|439965 | 1.864e-07 | 0.00341 |
TTC36|143941 | 2.265e-07 | 0.00415 |
HAO2|51179 | 1.897e-06 | 0.0347 |
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Expresson data file = BLCA-TP.uncv2.mRNAseq_RSEM_normalized_log2.txt
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Clinical data file = BLCA-TP.clin.merged.picked.txt
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Number of patients = 134
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Number of genes = 18307
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Number of clinical features = 9
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 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 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 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.
This is an experimental feature. The full results of the analysis summarized in this report can be downloaded from the TCGA Data Coordination Center.