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Molecular diagnosis for detecting KRAS mutation in peritoneal washing fluid of pancreatic ductal adenocarcinoma

Positive peritoneal washing cytology is an indicator of poor prognosis in patients with pancreatic ductal adenocarcinoma (PDAC); however, its sensitivity is relatively low. This study evaluated the performance of peptide nucleic acid (PNA)-directed PCR clamping as a molecular-based peritoneal washin...

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Published in:Scientific reports 2024-09, Vol.14 (1), p.21732-12, Article 21732
Main Authors: Shimane, Gaku, Nakano, Yutaka, Matsuda, Sachiko, Kitago, Minoru, Masugi, Yohei, Nakamura, Kohei, Nakamura, Yuki, Yagi, Hiroshi, Abe, Yuta, Hasegawa, Yasushi, Hori, Shutaro, Tanaka, Masayuki, Takemura, Ryo, Nishihara, Hiroshi, Kitagawa, Yuko
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creator Shimane, Gaku
Nakano, Yutaka
Matsuda, Sachiko
Kitago, Minoru
Masugi, Yohei
Nakamura, Kohei
Nakamura, Yuki
Yagi, Hiroshi
Abe, Yuta
Hasegawa, Yasushi
Hori, Shutaro
Tanaka, Masayuki
Takemura, Ryo
Nishihara, Hiroshi
Kitagawa, Yuko
description Positive peritoneal washing cytology is an indicator of poor prognosis in patients with pancreatic ductal adenocarcinoma (PDAC); however, its sensitivity is relatively low. This study evaluated the performance of peptide nucleic acid (PNA)-directed PCR clamping as a molecular-based peritoneal washing cytology for sensitive detection of KRAS mutation in PDAC. Intraoperative peritoneal washing fluid (IPWF) obtained from patients with PDAC who underwent surgery was analyzed. PNA-directed PCR clamping was performed on DNA extracted from IPWF. Among 54 patients enrolled, threshold cycle (Ct) was significantly lower in patients with positive peritoneal washing cytology than in those with negative peritoneal washing cytology ( P  
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This study evaluated the performance of peptide nucleic acid (PNA)-directed PCR clamping as a molecular-based peritoneal washing cytology for sensitive detection of KRAS mutation in PDAC. Intraoperative peritoneal washing fluid (IPWF) obtained from patients with PDAC who underwent surgery was analyzed. PNA-directed PCR clamping was performed on DNA extracted from IPWF. Among 54 patients enrolled, threshold cycle (Ct) was significantly lower in patients with positive peritoneal washing cytology than in those with negative peritoneal washing cytology ( P  &lt; 0.001) and in patients with peritoneal dissemination than in those without peritoneal dissemination ( P  &lt; 0.01). The optimal Ct cut-off to predict KRAS mutations in IPWF was 36.42 based on a receiver operating characteristic curve. The sensitivity, specificity, and accuracy for molecular diagnosis were 100%, 80.0%, and 85.2%, respectively. Peritoneal dissemination recurrence was significantly more frequent in patients with a positive molecular diagnosis than in those with a negative diagnosis (38.9 vs. 8.0%, P  = 0.013). 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This study evaluated the performance of peptide nucleic acid (PNA)-directed PCR clamping as a molecular-based peritoneal washing cytology for sensitive detection of KRAS mutation in PDAC. Intraoperative peritoneal washing fluid (IPWF) obtained from patients with PDAC who underwent surgery was analyzed. PNA-directed PCR clamping was performed on DNA extracted from IPWF. Among 54 patients enrolled, threshold cycle (Ct) was significantly lower in patients with positive peritoneal washing cytology than in those with negative peritoneal washing cytology ( P  &lt; 0.001) and in patients with peritoneal dissemination than in those without peritoneal dissemination ( P  &lt; 0.01). The optimal Ct cut-off to predict KRAS mutations in IPWF was 36.42 based on a receiver operating characteristic curve. The sensitivity, specificity, and accuracy for molecular diagnosis were 100%, 80.0%, and 85.2%, respectively. 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Peritoneal dissemination recurrence was significantly more frequent in patients with a positive molecular diagnosis than in those with a negative diagnosis (38.9 vs. 8.0%, P  = 0.013). The genomic approach might be clinically valuable for a more precise tumor cell detection in IPWF.</abstract><cop>London</cop><pub>Nature Publishing Group UK</pub><pmid>39289461</pmid><doi>10.1038/s41598-024-72569-8</doi><tpages>12</tpages><oa>free_for_read</oa></addata></record>
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subjects 631/208/721
631/67
692/4020
692/499
692/53
Adenocarcinoma
Adult
Aged
Aged, 80 and over
Ascitic Fluid - pathology
Carcinoma, Pancreatic Ductal - diagnosis
Carcinoma, Pancreatic Ductal - genetics
Carcinoma, Pancreatic Ductal - pathology
Cellular biology
Cytology
Diagnosis
Female
Humanities and Social Sciences
Humans
KRAS
Male
Middle Aged
multidisciplinary
Mutation
Nucleic acids
Pancreas
Pancreatic cancer
Pancreatic ductal adenocarcinoma
Pancreatic Neoplasms - diagnosis
Pancreatic Neoplasms - genetics
Pancreatic Neoplasms - pathology
Peptide nucleic acids
Peritoneal Lavage
Peritoneal washing fluid
Peritoneum
Polymerase chain reaction
Proto-Oncogene Proteins p21(ras) - genetics
ROC Curve
Science
Science (multidisciplinary)
Sensitivity analysis
Sensitivity and Specificity
title Molecular diagnosis for detecting KRAS mutation in peritoneal washing fluid of pancreatic ductal adenocarcinoma
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