The study of biomarkers is in vogue in gynecological cancers namely ovarian serous epithelial cancers, endometrial and cervical cancers. The Ovarian epithelial tumors comprise 60% of ovarian neoplasms and more than 90% of malignant tumors of the ovary  . In Serous epithelial carcinomas the biomarkers are used for detection, follow up and prognosis and the role of biomarkers is not established in other Ovarian Cancers like Mucinous or endometrioid cancers. Endometrial Carcinoma is around 7% of all invasive cancers in women. The cervix cancers are of various types like squamous, adenocarcinoma, neuroendocrine carcinomas etc. The biomarkers which are found to be useful in these malignancies are that which are detected in the body fluids and tissues of cancer patient and these can be hormones, oncofetal antigens, enzymes and receptors. The biomarkers prevalent in use for these three gynaecological cancers are commonly Cancer antigen 125 (CA-125), B, Alpha-fetoprotein (AFP), Inhibin, Carcinoembryonic antigen (CEA), Squamous cell carcinoma (SCC) antigen, Carbohydrate antigen 19-9, Cancer antigen 27 - 29, Human epididymis protein 4 (HE4), Osteopontin, transthyretin, Immunosuppressive acidic protein, leptin, CA15-3, CK19 and Thymidine kinase and the exact importance is not elucidated properly so as to establish them as a proper screening and prognostic tool.
The biomarker marker Squamous cell carcinoma (SCC) antigen is raised in cervical squamous cell carcinomas. Endometrial cancer is a common cancer in women. In 75% of endometrial cancer cases, the tumor remains confined to the uterus and has a favorable prognosis if early detected. The prognosis, however, worsens dramatically as the disease progresses. Thus early diagnosis of these gynaecological malignancies is vital and life saving. The biomarkers help in the early diagnosis, screening, treatment, response, follow up and prognosis.
The review of literature was done simply on the basis of significant study of tumor markers in various gynaecological cancers. In Ovarian Cancer, the positive predictive value of CA125 assay to be 57% whereas in contemporary studies the positive predictive value of CA125 was 50% - 92%, CA19-9 68% - 83%, CA15-3 50% - 56% and Immunosuppressive acidic protein 70% - 93%. HE4 had significantly higher concentrations in Ovarian serous cancer (p < 0.001). Tumour mar- ker sensitivity in ovarian cancer was 79.3% for HE4, 82.9% for CA 125  .
In advanced epithelial ovarian cancer Kang et al.  studied the CA125 levels in 153 patients and found better the survival of 32.4 months in when CA-125 values were less than 10 U/ml and the survival was 16.8 months in those patients with Ovarian Cancer with CA 125 levels of 0 - 35 U/mL (p = 0.0001).
In the study of biomarkers in Ovarian Cancer Van Gorp et al.  found the mean CA125 value of 324.98 ± 98 for malignant ovarian tumors in comparison to low values in benign ovarian tumors and they found significant statistical significance between the benign and malignant tumors (p = 0.5). Anton et al.  studied the biomarkers HE4 and CA125 in 491 patients and found sensitivity of 73% and 88% respectively, and the results were significant. Moore et al.  studied HE4 in Ovarian cancer and found sensitivity to be 94.9% at a 95% specificity (p = 0.50). The positive predictive value by combination of CA-125 levels, HE4, CA19-9 and CEA for the detection of Ovarian cancer was 94%. Zhang et al.  also studied the biomarkers CA19-9, CA15-3 and their statistical correlation was not significant in Ovarian Cancer and did not corresponded with the clinical course of the disease. Vistintin et al.  found the levels of leptin, prolactin, osteopontin to be 95% sensitive and 99% specific in Ovarian cancer.
In cervix cancer Scambia et al.  studied serum levels of squamous cell carcinoma antigen (SCC), CA 125 and CA 15.3 in 102 patients with locally advanced cervical cancer undergoing neoadjuvant chemotherapy (NACT) and radical surgery. They found a significant correlation between SCC concentration and stage, histotype, cervical tumour size and lymph node status. For CA 125 and CA 15.3, no significant difference in the distribution of marker levels according to histopathological variables was found. In a multivariate analysis, histological type, FIGO stage and SCC positivity (>5 ng/ml) proved to be independent predictors of response to neoadjuvant chemotherapy. Moreover, logistic regression analysis showed that CA 15.3 may be a significant adjunct to SCC in the prediction of chemotherapy response. Of the three markers tested, only CA 125 was significantly related to patient survival. In the multivariate analysis, clinical response to chemotherapy and CA 125 status (>35 U/ml) retained an independent prognostic value. Pretreatment serum levels of SCC, together with CA 15.3 assay, may be a useful tool in the determination of response to chemotherapy, while CA 125 assay could be evaluated as a prognostic risk factor in these patients.
Ginath et al. studied  39 patients found that 21.4% of 28 patients with endometrioid endometrial carcinoma had elevated serum CA 125 and there was correlation with the stage of the tumor. Kurihara et al.  found in their study that serum CA 125 had a sensitivity of 69.0%, specificity of 74.1%, positive predictive value of 58.8% and negative predictive value of 81.6%. Takami et al.  studied the rerlevant biomarkers in endometrial cancers and found high CA 125 levels in endometrial cancer in 291 patients and the result was statistically significant. The levels of CA125 in the ranged from 2.1 to 43.0 U/ml (17.2 ± 2.3 U/ml) and the difference of the mean value of the two groups was statistically significant (p < 0.001). The CA125 levels in correlation was seen (CA125 = 0.6 × age + 11.5, p < 0.05). Patients with endometrial cancer showed a decrease in their CA125 levels after a hysterectomy and salpingo-oophorectomy (6.5 ± 1.2 U/ml, p < 0.0001).
For Gynecological malignancies namely Ovarian, Cervix and Endometrial cancers screening with these novel tumor markers in combination which are significant to a particular group of cancers. The tumor markers namely CA125, HE4, CA19-9, CEA and CA15-3 can be used for screening in suspected ovarian cancers, SCC antigen, CK19 and IAP for screening in suspected cervix cancer patients and CA125, CA19-9, CEA, CA15-3 and HE4 for screening in endometrial cancer.
Cancer antigen 125 (CA-125),
B, Alpha-fetoprotein (AFP),
Carcinoembryonic antigen (CEA),
Squamous cell carcinoma (SCC) antigen,
Carbohydrate antigen 19-9 (CA19-9),
Cancer antigen 125 (CA125),
Human epididymis protein 4 (HE4).
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