This is single-center, prospective, non-randomized study
The study will include patients with more than 3 polyps, without mutations in the APC gene. Using molecular genetic research methods (polymerase chain reaction, SSCP, sequencing by Sanger method) mutations in the MutYH gene will be studied. For all patients with mutations in the MutYH gene, an optimal diagnostic algorithm will be developed. The significance of monoallelic mutations in the MutYH gene will be determined. Clinical monitoring will be defined. Optimal amount of surgical intervention will be suggested.
Study Type
INTERVENTIONAL
Allocation
NON_RANDOMIZED
Purpose
TREATMENT
Masking
NONE
Enrollment
25
Amplification of the examined fragments of the MutYH gene was conducted using the PCR machine TP4-PCR-01-Tertsik (DNA-Technology, Russia) containing 25 μL of the reaction mixture: 0.1-1.0 μg genomic DNA; 0.25 μM of each original oligoprimer; 200 μM of each nucleosidetriphosphate; 1 U Taq polymerase; PCR buffer (500 mM Tris, 500 mM KCl, pH 8.74); 2.5 μL MgCl2 (25 mM)); deionized water; 20-30 μL of mineral oil. For MutYH gene analysis (Transcript ENST00000257430) Primer3 software (http:// frodo.wi.mit.edu/primer3/input.htm) was selected and 16 primer pairs. The variants of the primary structure in the obtained fragments were revealed using SSCP. DNA fragments containing electrophoretically identified variants were sequenced.
State Scientific Centre of Coloproctology
Moscow, Russia
RECRUITINGPatients with germIine mutations in MutYH
number of patients with monoallelic and biallelic mutations in the MutYH-gene
Time frame: from 0 to 6 months
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