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KMID : 1188320200140030387
Gut and Liver
2020 Volume.14 No. 3 p.387 ~ p.394
Factors of Endoscopic Ultrasound-Guided Tissue Acquisition for Successful Next-Generation Sequencing in Pancreatic Ductal Adenocarcinoma
Park Jae-Keun

Lee Ji-Hyeon
Noh Dong-hyo
Park Joo-Kyung
Lee Kyu-Taek
Lee Jong-Kyun
Lee Kwang-Hyuck
Jang Kee-Taek
Cho Ju-Hee
Abstract
Background/Aims: Recent advances in understanding the genetics of pancreatic ductal adenocarcinoma (PDAC) have led to the potential for a personalized approach. Several studies have described the feasibility of generating genetic profiles of PDAC with next-generation sequencing (NGS) of samples obtained through endoscopic ultrasound-guided tissue acquisition (EUS-TA). The aim of this study was to find the best EUS-TA approach for successful NGS of PDAC.

Methods: We attempted to perform NGS with tissues from 190 patients with histologically proven PDAC by endoscopic ultrasound-guided fine-needle aspiration and endoscopic ultrasound-guided fine-needle biopsy at Samsung Medical Center between November 2011 and February 2015. The medical records of these patients were retrospectively reviewed for parameters including tumor factors (size, location, and T stage), EUS-TA factors (needle gauge [G], needle type, and number of needle passes) and histologic factors (cellularity and blood contamination). The sample used for NGS was part of the EUS-TA specimen that underwent cytological and histological analysis.

Results: NGS could be successfully performed in 109 patients (57.4%). In the univariate analysis, a large needle G (p=0.003) and tumor located in the body/tail (p=0.005) were associated with successful NGS. The multivariate logistic regression analysis revealed that the needle G was an independent factor of successful NGS (odds ratio, 2.19; 95% confidence interval, 1.08 to 4.47; p=0.031).

Conclusions: The needle G is an independent factor associated with successful NGS. This finding may suggest that the quantity of cells obtained from EUS-TA specimens is important for successful NGS.
KEYWORD
Next-generation sequencing, Endoscopic ultrasound-guided tissue acquisition, Endoscopic ultrasound guided fine-needle aspiration, Endoscopic ultrasound guided fine-needle biopsy, Pancreatic ductal adenocarcinoma
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