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  • Title: The value of serum and tissular expression of CA 125 antigen, in evaluation of the response to second line chemotherapy for the relapsed ovarian carcinoma.
    Author: Bădulescu F, Bădulescu A, Schenker M, Popescu CF, Stoica Z.
    Journal: Rom J Morphol Embryol; 2005; 46(4):329-34. PubMed ID: 16688372.
    Abstract:
    PURPOSE: The purpose of this study is to compare the predicted value of the blood levels variations of CA 125 antigen and the imunohistochemical expression of CA 125, with imagistic criteria (The Response Evaluation Criteran in Solid Tumor--RECIST) regarding the survival estimation of female patients with relapsed ovarian carcinoma which undergo to second line chemotherapy. MATERIAL AND METHOD: We included in this study 40 female patients diagnosed with ovarian carcinoma in the Oncology Clinic of the Emergency County Hospital Craiova, in a period of two years (from 2000 to 2002), which have fulfilled the following criteria: ovarian carcinoma IC-IV stage, according to FIGO system, first line treatment represented by the association between paclitaxel and a platinum salt, refractory or recurrent disease, indications for beginning the second line chemotherapy represented by topotecan or paclitaxel and carboplatin. The serial CA 125 antigen was determined in all patients before starting the chemotherapy and after each two sequences of chemotherapy, and the imunohistochemical expression of CA 125 was evaluated from surgery extracts before the second line chemotherapy (11 cases). The imagistic evaluation of the treatment response was done after 4 sequences of chemotherapy. RESULTS: All patients had measurable disease according to RECIST criteria and had high values (at least double) of the CA 125 antigen blood level at the time of diagnosis. The imunohistochemically expression of CA 125 was correlated in most cases with the blood level of CA 125. The evaluation criterion of the CA 125 antigen has been shown to be more efficient in estimation the survival rate compared with the RECIST system. In a various analysis, which included numerous potential prognostic factors, only the variation of blood levels of these antigen and the free disease interval from the finalization of the first line chemotherapy have been identified as predictive factors of survival, while the other variables, including the RECIST criteria, had no impact on the prognosis regarding the survival. CONCLUSIONS: The response evaluation criteria based on the blood levels variations of CA 125 antigen are a better instrument for the estimation of the compared prognosis with the RECIST criteria, for patients on second line chemotherapy for relapsed ovarian carcinoma.
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