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Eur J Pediatr Surg 2018; 28(05): 413-419
DOI: 10.1055/s-0037-1605346
Original Article
Georg Thieme Verlag KG Stuttgart · New York

No Tissue Expression of KRAS or BRAF Mutations in 61 Adult Patients Treated for Esophageal Atresia in Early Childhood

Kien Xuan Dang
1   Minerva Foundation Institute for Medical Research, Helsinki, Finland
,
Tho Ho
2   Department of Genomics, BPARC, Vietnam Military Medical University, Vietnam
,
Saara Sistonen
3   Department of Pediatric Surgery, Hospital for Children and Adolescents, University of Helsinki, Helsinki, Finland
,
Antti Koivusalo
3   Department of Pediatric Surgery, Hospital for Children and Adolescents, University of Helsinki, Helsinki, Finland
,
Mikko Pakarinen
3   Department of Pediatric Surgery, Hospital for Children and Adolescents, University of Helsinki, Helsinki, Finland
,
Risto Rintala
3   Department of Pediatric Surgery, Hospital for Children and Adolescents, University of Helsinki, Helsinki, Finland
,
Ulf-Hakan Stenman
4   Department of Clinical Chemistry, University of Helsinki, Helsinki, Finland
,
Arto Orpana
5   Laboratory of Genetics, HUSLAB, Helsinki University Central Hospital, Helsinki, Finland
,
Jakob Stenman
6   Institute for Molecular Medicine, Finland, Helsinki, Finland
7   Department for Women's and Children's Health, Karolinska Institutet, Stockholm, Sweden
› Institutsangaben Funding This study was funded by Centre for International Mobility (CIMO) fellowships, Finska Läkare Sällskapet, Minerva Foundation Institute for Medical Research, funding for open access charge: University of Helsinki and Vietnam National Foundation for Science & Technology Development (NAFOSTED).
Weitere Informationen

Publikationsverlauf

30. Mai 2017

22. Juni 2017

Publikationsdatum:
05. September 2017 (online)

    Lizenzen und Reprints

Abstract

Background Previous studies have reported an association among esophageal atresia (EA), Barrett's esophagus, and esophageal adenocarcinoma later in life.

Objective The objective of the article is to evaluate KRAS and BRAF mutations as potential genetic markers for early detection of malignant transformation, we used an ultrasensitive technique to detect tissue expression of KRAS and BRAF mutations in endoscopic biopsies from 61 adult patients under follow-up after treatment for EA.

Materials and Methods RNA was extracted from 112 fresh-frozen endoscopic tissue biopsies from 61 adult patients treated for EA in early childhood. RNA was reverse transcribed using the extendable blocking probe reverse transcription method. KRAS codons 12 and 13, as well as BRAF mutations were detected by quantitative polymerase chain reaction.

Results No mutations of KRAS codon 12, KRAS codon 13, or BRAF were found in 112 endoscopic biopsy samples from 61 patients.

Conclusion Despite the presence of histological findings indicating long-standing gastroesophageal reflux in 25%, as well as symptomatic gastroesophageal reflux in more than 40%, there was no detectable tissue expression of KRAS or BRAF mutations in this cohort of patients.

Keywords

esophageal atresia - extendable blocking probe - KRAS - BRAF
 

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