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Published in: BMC Cancer 1/2011

Open Access 01-12-2011 | Technical advance

High resolution melting analysis for a rapid identification of heterozygous and homozygous sequence changes in the MUTYH gene

Authors: Rossella Tricarico, Francesca Crucianelli, Antonio Alvau, Claudio Orlando, Roberta Sestini, Francesco Tonelli, Rosa Valanzano, Maurizio Genuardi

Published in: BMC Cancer | Issue 1/2011

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Abstract

Background

MUTYH-associated polyposis (MAP) is an autosomal recessive form of intestinal polyposis predisposing to colorectal carcinoma. High resolution melting analysis (HRMA) is a mutation scanning method that allows detection of heterozygous sequence changes with high sensitivity, whereas homozygosity for a nucleotide change may not lead to significant curve shape or melting temperature changes compared to homozygous wild-type samples. Therefore, HRMA has been mainly applied to the detection of mutations associated with autosomal dominant or X-linked disorders, while applications to autosomal recessive conditions are less common.

Methods

MUTYH coding sequence and UTRs were analyzed by both HRMA and sequencing on 88 leukocyte genomic DNA samples. Twenty-six samples were also examined by SSCP. Experiments were performed both with and without mixing the test samples with wild-type DNA.

Results

The results show that all MUTYH sequence variations, including G > C and A > T homozygous changes, can be reliably identified by HRMA when a condition of artificial heterozygosity is created by mixing test and reference DNA. HRMA had a sensitivity comparable to sequencing and higher than SSCP.

Conclusions

The availability of a rapid and inexpensive method for the identification of MUTYH sequence variants is relevant for the diagnosis of colorectal cancer susceptibility, since the MAP phenotype is highly variable.
Appendix
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Metadata
Title
High resolution melting analysis for a rapid identification of heterozygous and homozygous sequence changes in the MUTYH gene
Authors
Rossella Tricarico
Francesca Crucianelli
Antonio Alvau
Claudio Orlando
Roberta Sestini
Francesco Tonelli
Rosa Valanzano
Maurizio Genuardi
Publication date
01-12-2011
Publisher
BioMed Central
Published in
BMC Cancer / Issue 1/2011
Electronic ISSN: 1471-2407
DOI
https://doi.org/10.1186/1471-2407-11-305

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Webinar | 19-02-2024 | 17:30 (CET)

Keynote webinar | Spotlight on antibody–drug conjugates in cancer

Antibody–drug conjugates (ADCs) are novel agents that have shown promise across multiple tumor types. Explore the current landscape of ADCs in breast and lung cancer with our experts, and gain insights into the mechanism of action, key clinical trials data, existing challenges, and future directions.

Dr. Véronique Diéras
Prof. Fabrice Barlesi
Developed by: Springer Medicine