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Sample A: Cover Page of Thesis, Project, or Dissertation Proposal

Sample A: Cover Page of Thesis, Project, or Dissertation Proposal

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Figure 4.7: Low grade tum<strong>or</strong> survival curves. ProbeSet 34342_s_at (SPP1) and patient survival rates with<br />

respect to less than <strong>or</strong> equal to 75% tum<strong>or</strong> pathology and stage progression. The three value-generating<br />

methods no longer agree. With the BaFL panel it can be seen that, given low tum<strong>or</strong> stage histology call but<br />

an elevated osteopontin level, there is a significant impact on survival, m<strong>or</strong>e so than f<strong>or</strong> late stage cancer<br />

patients. The RMA data shows a min<strong>or</strong> impact, while the dCHIP data show no such effect; the principal<br />

difference between RMA and dCHIP is that one sample that was identified as switching groupings in<br />

Figure 4.5.<br />

Bonferroni Feature Selection Characteristics<br />

The 30 ProbeSets which were present in the intersection <strong>of</strong> the Bonferroni c<strong>or</strong>rected t-test results<br />

are presented in Table 4.1. In addition to these 30 ProbeSets the osteopontin (SPP1) ProbeSet,<br />

34342_s_at, was included to arrive at the final candidate gene list. This ProbeSet was re-<br />

inc<strong>or</strong>p<strong>or</strong>ated f<strong>or</strong> the Bhattacharjee n<strong>or</strong>mal samples, f<strong>or</strong> the 7 probes retained across all<br />

adenocarcinoma samples. This ProbeSet was not eliminated in the BaFL cleansing <strong>of</strong> the<br />

105

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