Table 1

Alternative spliced genes selected by our method: Comparison of non-metastatic medulloblastomas with metastatic medulloblastomas

Affymetrix Probe Set ID
Gene Symbol
Number of Affymetrix Probes in the Predicted Pseudo-exon
Nucleotide Positions of Predicted Pseudo-exon in the Gene
Mean Difference
Standard Error
Z-score
Description of the Genes

M81882_at
GAD2
4
(2135–2285)
-1.28
0.20
-6.45
glutamate decarboxylase 2 (pancreatic islets and brain, 65 kDa)
M13955_at
KRT7
5
(1402–1474)
-0.63
0.12
-5.23
keratin 7
U17327_at
NOS1
7
(6805–7003)
-0.66
0.13
-5.19
nitric oxide synthase 1 (neuronal)
X14329_at
CPN1
4
(1569–1665)
-0.62
0.12
-5.18
carboxypeptidase N, polypeptide 1, 50 kD
M89470_s_at
PAX2
6
(2855–2972)
-0.92
0.19
-4.91
paired box gene 2
L14542_at
KLRC3
5
(916–1006)
-1.18
0.24
-4.91
killer cell lectin-like receptor subfamily C, member 3
X76648_at
GLRX
3
(704–776)
-1.35
0.28
-4.86
glutaredoxin (thioltransferase)

U82987_at
BBC3
3
(1578–1638)
2.25
0.32
6.98
BCL2 binding component 3
U01102_at
SCGB1A1
2
(409–439)
1.42
0.25
5.62
secretoglobin, family 1A, member 1 (uteroglobin)
M28219_at
LDLR
15
(67–277)
0.77
0.14
5.42
low density lipoprotein receptor (familial hypercholesterolemia)
X68194_at
SYPL
5
(1915–2089)
1.67
0.31
5.42
synaptophysin-like protein
U85267_at
DSCR1
10
(64–169)
1.20
0.24
5.08
Down syndrome critical region gene 1
L36051_at
THPO
6
(1647–1809)
1.05
0.21
4.96
thrombopoietin (myeloproliferative leukemia virus oncogene ligand, megakaryocyte growth and development factor)

Number of Affymetrix Probes in the Predicted Pseudo-exon: number of probes that are contained in a predicted alternatively spliced pseudo-exon. Nucleotide Positions of Predicted Pseudo-exon in the Gene: nucleotide positions of the pseudo-exon from the beginning of the gene it resides. Mean difference: Mean difference of the expression values between the two tissue types being compared for each predicted pseudo-exon in the t-test in STEP 2. Standard Error: the standard error calculated in the same t-test. Z-score: the ratio of mean difference over standard error (noise), a measure of significance of the difference between the two tissues being compared. The sign of the Z-scores indicate direction of the difference. A negative Z-score means a lower expression in metastatic medulloblastomas than in non-metastatic medulloblastomas, and vice-versa for a positive Z-score.

Fan et al. Theoretical Biology and Medical Modelling 2006 3:19   doi:10.1186/1742-4682-3-19