CCND1 Amplification in Pancreatic Ductal and Ampullary Adenocarcinoma and Its Impact on Patients ’ Survival: a Single-Center Observational Study

AbstractStudies conducted worldwide in the last few decades have demonstrated that various high- and low-frequency inherited and somatic mutations play important roles in the pathogenesis of periampullary carcinoma. Owing to relatively inaccessible location and lack of specific early diagnostic signs, majority of periampullary tumors are difficult to manage. Limited chemotherapeutic options that are available are highly toxic and not very efficacious. CyclinD1, if found to be amplified in these malignancies, might become an important gene to be targeted for monoclonal antibody therapy. An analytical retrospective-prospective study was done on 35 patients of operable periampullary carcinoma, in Medical College, Kolkata from January 2019 to July 2020. After isolating DNA from tumor and corresponding normal tissue by Qiagen DNEasy kit, CyclinD1 amplification was assessed by RT-PCR using Taqman DNA copy number in the laboratory of Indian Statistical Institute. Survival analysis was done by Kaplan –Meier estimator and all statistical calculations performed through SPSS software. Six (17%) out of 35 patients were found to have >  twofold amplifications of CyclinD1 gene. However, no positive correlation was found between CyclinD1 amplification and overall survival of the patients (p value 0.21). Positive correlation was not found in our study betweenCCND1 amplification and periampullary malignancy. However, a single large study conducted in Japan by Yamazaki showed reduced ...
Source: Indian Journal of Surgical Oncology - Category: Cancer & Oncology Source Type: research