Effect of Expression of CD74 and VEGF on Outcome of Treatment in Patients With Malignant Pleural Mesothelioma

Study Overview
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Brief Summary
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This is a prospective study evaluating the effect of expression of CD74 and VEGF on outcome of treatment in patients with malignant pleural mesothelioma receiving Pemetrexed/Platinum protocol. The paraffin blocks of the patients will be tested for CD74 and VEGF before starting treatment using IHC and the results will be correlated with the outcome of treatment during evaluation.

Official Title
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Effect of Expression of CD74 and VEGF on Outcome of Treatment in Patients With Malignant Pleural Mesothelioma Receiving Pemetrexed/Platinum Protocol

Conditions
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Malignant Pleural Mesothelioma

Intervention / Treatment
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* Other: CD 74, VEGF detection


Participation Criteria
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Eligibility Criteria
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Inclusion Criteria: Histologic or cytologic diagnosis of malignant pleural Mesothelioma No prior chemotherapy. ECOG less than or equal to 2 . Measurable disease according to the requirements of SWOG criteria. Age ≥ 19 years . Estimated life expectancy of at least 12 weeks . Adequate bone marrow reserve (white blood cells [WBC] ≥ 3.5 × 109 /L, neutrophils ≥ 1.5 × 109 /L, platelets ≥ 100 × 109 /L, and hemoglobin ≥ 9.0 gm/dL). Exclusion Criteria: Presence of central nervous system metastases. Inadequate liver function (bilirubin > 1.5 times upper normal limit [UNL] and alanine transaminase [ALT] or aspartate transaminase [AST] > 3.0 UNL or up to 5.0 UNL in the presence of hepatic metastases). Inadequate renal function (creatinine > 1.25 times UNL, creatinine clearance < 50mL/min). Serious concomitant systemic disorder incompatible with the study. Second primary malignancy (except in situ carcinoma of the cervix, adequately treated basal cell carcinoma of the skin, T1 vocal cord cancer in remission, or prior malignancy treated more than 5 years prior to enrollment without recurrence). Pregnancy

Ages Eligible for Study
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Minimum Age: 19 Years
Maximum Age: 70 Years

Sexes Eligible for Study
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All

Accepts Healthy Volunteers
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No

Study Plan
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How is the study designed?
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Arms and Interventions

| Participant Group/Arm | Intervention/Treatment |
| --- | --- |
| CD74 - VEGF arm<br> | Other: CD 74, VEGF detection<br>* All MPM samples will be subjected to immunohistochemistry with CD74 and VEGF antibodies. The VEGF will be scored using a 0-3 scoring system to represent the percentage of cytoplasmic positively stained cells in the tumor portion, as follows: 0-10%, 11-30%, 31-60% and 61-100% positive staining correspond to score 0, 1, 2 and 3 respectively. Both CD74 and VEGF immunohistochemical markers will be furtherly categorized in the statistical analyses as none (0)/low (1) vs medium (2)/high expression(3). The CD74 expression will be recorded in the tumor and the stroma semiquantitatively using the histoscore method using four representative fields with the final score resulting from the percentage of tumor cells staining positively multiplied by the staining intensity grade.<br>|

What is the study measuring?
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Primary Outcome Measures

| Outcome Measure | Measure Description | Time Frame |
| --- | --- | --- |
| CD 74 and VEGF detection effect on response to treatment | The paraffin blocks of the patients will be tested for CD74 and VEGF before starting treatment using IHC and the results will be correlated with the outcome of treatment during evaluation. All MPM samples will be subjected to immunohistochemistry with CD74 and VEGF antibodies. The VEGF will be scored using a 0-3 scoring system to represent the percentage of cytoplasmic positively stained cells in the tumor portion, as follows: 0-10%, 11-30%, 31-60% and 61-100% positive staining correspond to score 0, 1, 2 and 3 respectively. Both CD74 and VEGF immunohistochemical markers will be furtherly categorized in the statistical analyses as none (0)/low (1) vs medium (2)/high expression(3). The CD74 expression will be recorded in the tumor and the stroma semiquantitatively using the histoscore method using four representative fields with the final score resulting from the percentage of tumor cells staining positively multiplied by the staining intensity grade. | Essay done before starting treatment and correlated with the response | 

 Terms related to the study
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Keywords Provided by Centre Hospitalier Valida
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Mesothelioma, CD 74, VEGF