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This is a retrospective observational study to evaluate the integrative prognostic value of inflammatory markers, specifically the neutrophil-lymphocyte ratio (NLR) and platelet-lymphocyte ratio (PLR), alongside the CA-125 Elimination rate constant K (KELIM) score in advanced ovarian cancer patients. The study includes patients with advanced serous ovarian cancer (stage III or IV) who received neoadjuvant platinum-based chemotherapy followed by interval debulking surgery at Sohag University Hospital and Sohag Cancer Center between 2022 and 2025. The primary objective is to evaluate how well these biomarkers predict survival outcomes, including progression-free survival (PFS) and overall survival (OS). Additionally, the study aims to assess their significance in predicting the success of complete versus incomplete cytoreductive surgery following neoadjuvant chemotherapy.
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| Label | Type | Description | Intervention Names |
|---|---|---|---|
| Ovarian Cancer Cohort | Advanced serous ovarian cancer patients treated with neoadjuvant chemotherapy followed by interval debulking surgery. |
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| Measure | Description | Time Frame |
|---|---|---|
| Progression-Free Survival (PFS) | Evaluation of the prognostic value of baseline neutrophil lymphocyte ratio, platelet lymphocyte ratio, and CA 125 KELIM score in predicting progression-free survival in locally advanced ovarian cancer patients receiving platinum-based neoadjuvant chemotherapy followed by interval debulking surgery. PFS is calculated as the time from the date of diagnosis to the date of first documented clinical or radiological disease progression, or death from any cause. | From the date of diagnosis up to 4 years (assessed using retrospective medical records of patients treated between 2022 and 2025). |
| Overall Survival (OS) | Evaluation of the prognostic value of baseline neutrophil lymphocyte ratio, platelet lymphocyte ratio, and CA 125 KELIM score in predicting overall survival in locally advanced ovarian cancer patients receiving platinum-based neoadjuvant chemotherapy followed by interval debulking surgery. OS is calculated as the time from the date of diagnosis to the date of death from any cause. | From the date of diagnosis up to 4 years (assessed using retrospective medical records of patients treated between 2022 and 2025). |
| Measure | Description | Time Frame |
|---|---|---|
| Completeness of Interval Cytoreductive Surgery | Evaluation of the significance of baseline neutrophil lymphocyte ratio, platelet lymphocyte ratio, and CA 125 KELIM score in predicting surgical outcomes. The success of the interval debulking surgery will be categorized based on the presence of residual tumor into complete cytoreduction (no macroscopically visible tumor) versus incomplete cytoreduction following neoadjuvant chemotherapy. |
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Inclusion Criteria:
Patients who received platinum-based neoadjuvant chemotherapy (NACT) followed by interval debulking surgery (IDS) at Sohag University Hospital or Sohag Cancer Center between 2022 and 2025.
Available complete medical records, including pre-treatment baseline CBC (for NLR and PLR calculation) and longitudinal CA-125 levels (for KELIM score estimation).
Exclusion Criteria:
Patients with non-epithelial ovarian tumors (e.g., germ cell tumors, sex cord-stromal tumors).
Patients who underwent primary debulking surgery (PDS) before receiving chemotherapy.
Patients with concurrent active malignancies or a history of other cancers within the past 5 years.
Patients with active systemic inflammatory diseases, hematological disorders, or severe infections at baseline that could interfere with baseline inflammatory markers (NLR/PLR).
Incomplete or missing clinical, surgical, or follow-up data.
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Only female patients diagnosed with advanced serous ovarian cancer are eligible for inclusion in this study, as the disease is anatomically and biologically specific to females.
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The study population consists of female patients diagnosed with advanced epithelial ovarian cancer (specifically stage III or IV high-grade serous ovarian carcinoma) who were managed and followed up at Sohag University Hospital and Sohag Cancer Center, Egypt. Eligible participants are those who underwent a standard treatment protocol comprising platinum-based neoadjuvant chemotherapy followed by interval cytoreductive surgery between January 2022 and December 2025, and whose medical records contain comprehensive baseline hematological and tumor marker data.
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| Facility | Status | City | State | ZIP | Country | Contacts |
|---|---|---|---|---|---|---|
| Sohag university hospital | Sohag | Egypt |
| PubMed Identifier | Type | Citation | Retractions |
|---|---|---|---|
| 29156417 | Background | Passos VF, Rodrigues LKA, Santiago SL. The effect of magnesium hydroxide-containing dentifrice using an extrinsic and intrinsic erosion cycling model. Arch Oral Biol. 2018 Feb;86:46-50. doi: 10.1016/j.archoralbio.2017.11.006. Epub 2017 Nov 14. | |
| 33206029 | Background | Madrigal-Valverde M, Bittencourt RF, Ribeiro Filho AD, Barbosa VF, Vieira CA, Romao EA, Carneiro IB, Azevedo MC, Araujo GR. Quality of domestic cat semen collected by urethral catheterization after the use of different alpha 2-adrenergic agonists. J Feline Med Surg. 2021 Aug;23(8):745-750. doi: 10.1177/1098612X20973183. Epub 2020 Nov 18. |
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The data used in this study belong to the medical records of Sohag University Hospital and Sohag Cancer Center and contain sensitive patient clinical information. Due to institutional policies and strict patient confidentiality regulations, individual participant data cannot be made publicly available or shared outside the participating centers.
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| At the time of interval debulking surgery (typically performed after 3 to 6 cycles of neoadjuvant chemotherapy). |