[Mutations in the BRCA1 gene (185delAG and 5382insC) are not present in any of the 30 breast cancer patients analyzed from eastern Colombia].
BACKGROUND
Breast cancer is considered a worldwide public health problem, and, in Santander Province, Colombia, it is the first leading cause of morbidity and mortality by cancer in women. All cancers are considered genetic diseases, and mutations in BRCA (BReast CAncer) genes raises the risk for breast cancer by 60%-80%. The current study searched for the two most frequent BRCA1 mutations reported in the Breast Cancer Core Information database.


OBJECTIVE
The presence of specific mutations (185delAG, exon 2 and 5382insC, exon 20) was determined for the BRCA1 gene in women with familial/hereditary breast cancer.


METHODS
The sample included 30 female patients using the oncology services in Bucaramanga, eastern Colombia; an informed consent, a questionnaire and a blood sample were obtained from each. The molecular analysis was done with PCR-Mismatch, to detect the insertion or eliminatation of a restriction site, and enzymatic digestion methods (Hinfl or Ddel).


RESULTS
Two of the most frequent BRCA1 mutations in the international database were not found in the 30 patients studied.


CONCLUSIONS
Additional mutation screening techniques are necessary involving the entire BRCA1 gene, are necessary in order to better characterize the molecular epidemiology of breast cancer in Bucaramanga, Santander, Colombia.
Sanabria
María Carolina
MC
Departamento de Ciencias Básicas, Escuela de Medicina, Facultad de Salud, Universidad Industrial de Santander, Bucaramanga, Colombia. mariakmd24@yahoo.com
Muñioz
Gerardo
G
Vargas
Clara Inés
CI
D000328:Adult; D001483:Base Sequence; D001943:Breast Neoplasms / Q000453:epidemiology / Q000235:genetics*; D002277:Carcinoma / Q000453:epidemiology / Q000235:genetics*; D003105:Colombia / Q000453:epidemiology; D003278:Contraceptives, Oral, Hormonal; D004252:DNA Mutational Analysis; D004273:DNA, Neoplasm / Q000235:genetics*; D005192:Family Health; D005260:Female; D019398:Genes, BRCA1; D020249:Hormone Replacement Therapy; D006801:Humans; D008875:Middle Aged; D008969:Molecular Sequence Data; D016254:Mutagenesis, Insertional; D009376:Neoplasms, Hormone-Dependent / Q000453:epidemiology / Q000235:genetics; D011960:Receptors, Estrogen / Q000032:analysis; D011980:Receptors, Progesterone / Q000032:analysis; D017584:Reproductive History; D017384:Sequence Deletion; D011795:Surveys and Questionnaires
D003278:Contraceptives, Oral, Hormonal; D004273:DNA, Neoplasm; D011960:Receptors, Estrogen; D011980:Receptors, Progesterone