Publications by authors named "Pamela L Rojas"

Breast cancer is the most prevalent cancer in women worldwide. About 15-20% of all breast cancers do not express estrogen receptor, progesterone receptor or HER2 receptor and hence are collectively classified as triple negative breast cancer (TNBC). These tumors are often relatively aggressive when compared to other types of breast cancer, and this issue is compounded by the lack of effective targeted therapy.

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Interleukin-33 (IL-33) is a novel member of the IL-1 family of cytokines that plays diverse roles in the regulation of immune responses. IL-33 exerts its effects through a heterodimeric receptor complex resulting in the production and release of proinflammatory cytokines. A detailed understanding of the signaling pathways activated by IL-33 is still unclear.

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KIT alterations have been identified in melanoma and treatment with imatinib has met with some success. However, the relationship between KIT and melanoma histology remains uncharacterized, and its role in melanoma pathogenesis unknown. We evaluated 70 melanomas from 70 patients seen at a single institution from 1997 to 2008.

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Background: Pancreatic cancer is a near uniformly lethal disease and a better understanding of the molecular basis of this malignancy may lead to improved therapeutics. The Axl receptor tyrosine kinase is implicated in cellular transformation and tumor progression, although its role in pancreatic cancer has not been previously documented.

Results: Axl labeling was present in 54 of 99 (55%), and was absent in 45 of 99 (45%) cases, respectively.

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Esophageal adenocarcinoma arises in the backdrop of Barrett metaplasia-dysplasia sequence, with the vast majority of patients presenting with late-stage malignancy. Mesothelin, a glycophosphatidylinositol-anchored protein, is aberrantly overexpressed on the surface of many solid cancers. Mesothelin expression was assessed in esophageal tissue microarrays encompassing the entire histological spectrum of Barrett-associated dysplasia and adenocarcinoma.

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