Tuesday, February 03, 2009
PLoS Medicine - Ovarian Carcinoma Subtypes Are Different Diseases: Implications for Biomarker Studies
PLoS Medicine - Ovarian Carcinoma Subtypes Are Different Diseases: Implications for Biomarker Studies
Note: (funding) Cheryl Brown was an ovarian cancer survivour and was one of the original founders of Ovarian Cancer Canada.
"Cheryl Brown Ovarian Cancer Outcomes Unit, British Columbia Cancer Agency, Vancouver, British Columbia, Canada"
Why Was This Study Done?
Although it is usually regarded as a single disease, there are actually several distinct subtypes of ovarian carcinoma. These are classified according to their microscopic appearance as high-grade serous, low-grade serous, clear cell, endometrioid, and mucinous ovarian carcinomas. These subtypes develop differently and respond differently to chemotherapy. Yet scientists studying ovarian carcinoma usually regard this cancer as a single entity, and current treatment protocols for the disease are not subtype specific. Might better progress be made toward understanding ovarian carcinoma and toward improving its treatment if each subtype were treated as a separate disease? Why are some tumors confined to the ovary, whereas the majority spread beyond the ovary at time of diagnosis? In this study, the researchers address these questions by asking whether correlations between the expression of “biomarkers” (molecules made by cancer cells that can be used to detect tumors and to monitor treatment effectiveness) and the stage at diagnosis or length of survival can be explained by differential biomarker expression between different subtypes of ovarian carcinoma. They also address the question of whether early stage and late stage ovarian carcinomas are fundamentally different.
PLoS Medicine - Ovarian Cancer: A Clinical Challenge That Needs Some Basic Answers
PLoS Medicine - Ovarian Cancer: A Clinical Challenge That Needs Some Basic Answers
From a clinical perspective, epithelial ovarian cancer is something of an enigma. Despite improvements in aggressive debulking surgery and the initial good response of patients to platinum-based chemotherapies, there has been little improvement in the survival rates for over three decades..... About 65% of women with epithelial ovarian cancer will die within five years of their diagnosis [1].
Unfortunately, there are no effective biomarkers that can identify early-stage disease and no reliable prognostic markers for predicting clinical response and guiding treatment regimes. Furthermore, there remains intense debate about the cellular origins, precursor lesions, and histological classification of the disease. With so many unknowns, it is perhaps not surprising that progress in reducing mortality in women diagnosed with ovarian cancer has been so limited.
Subscribe to:
Posts
(
Atom
)
Posts
