Association between single nucleotide polymorphisms of DNA repair genes (BRCA1, BRCA2, and PALB2) and breast cancer incidence in a subset of Iranian population
Abstract Background Breast cancer (BC) is the most common malignancy among Iranian females, accounting for 24.4% of all malignancies. Germ line mutations in DNA repair system-related genes are associated with an increased risk of BC. This study aims to evaluate the frequencies of single nucleotide p...
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BMC
2025-03-01
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| Series: | Hereditary Cancer in Clinical Practice |
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| Online Access: | https://doi.org/10.1186/s13053-025-00311-0 |
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| author | Sepideh Jahangiri Zahra Abdan Massoud Houshmand Ali Souroush Mozaffar Aznab |
| author_facet | Sepideh Jahangiri Zahra Abdan Massoud Houshmand Ali Souroush Mozaffar Aznab |
| author_sort | Sepideh Jahangiri |
| collection | DOAJ |
| description | Abstract Background Breast cancer (BC) is the most common malignancy among Iranian females, accounting for 24.4% of all malignancies. Germ line mutations in DNA repair system-related genes are associated with an increased risk of BC. This study aims to evaluate the frequencies of single nucleotide polymorphisms (SNPs) in the BRCA1, BRCA2, and PALB2 genes in patients with BC from a subset of the Iranian population in the western part of Iran. Methods Blood samples were collected from 335 patients with BC and 354 healthy matched volunteers. Genomic DNA was extracted using the salting-out method and, after quality control, was genotyped using the multiplex TaqMan allelic discrimination assay for three SNPs: rs80359550 (6174 delT) in the BRCA2 gene, rs180177102 in the PALB2 gene, and rs386833395 (185delAG) in the BRCA1 gene. Statistical analysis was performed to examine allele frequency, odds ratio, and relative risk (genetic association) in a retrospective case-control study. Results The data showed no association between rs386833395 and BC risk in the studied population (odds ratio = 1), whereas rs80359550 and rs180177102 polymorphisms were strongly associated with BC risk in patients (odds ratio = 0.01 for both, with p-values of 0.011 and 0.021, respectively). Conclusions Our findings suggest no significant association between the rs386833395 polymorphism and BC risk in the Iranian Kurdish population, while rs80359550 and rs180177102 polymorphisms were strongly associated with BC. However, the study has several limitations, including its retrospective design, a relatively small sample size, and the potential lack of generalizability to other ethnic groups within Iran. Future studies involving larger cohorts and more diverse populations are needed to confirm these results. |
| format | Article |
| id | doaj-art-4bb44e5dd39e4fe7959bcc78d9d858d8 |
| institution | DOAJ |
| issn | 1897-4287 |
| language | English |
| publishDate | 2025-03-01 |
| publisher | BMC |
| record_format | Article |
| series | Hereditary Cancer in Clinical Practice |
| spelling | doaj-art-4bb44e5dd39e4fe7959bcc78d9d858d82025-08-20T02:49:16ZengBMCHereditary Cancer in Clinical Practice1897-42872025-03-012311710.1186/s13053-025-00311-0Association between single nucleotide polymorphisms of DNA repair genes (BRCA1, BRCA2, and PALB2) and breast cancer incidence in a subset of Iranian populationSepideh Jahangiri0Zahra Abdan1Massoud Houshmand2Ali Souroush3Mozaffar Aznab4Clinical Research Development Center of Imam Reza Hospital, Kermanshah University of Medical SciencesClinical Research Development Center of Imam Reza Hospital, Kermanshah University of Medical SciencesDepartment of Medical Genetics, National Institute of Genetics and BiotechnologyDepartment of Medical Physics, Kermanshah University of Medical SciencesClinical Research Development Center of Imam Reza Hospital, Kermanshah University of Medical SciencesAbstract Background Breast cancer (BC) is the most common malignancy among Iranian females, accounting for 24.4% of all malignancies. Germ line mutations in DNA repair system-related genes are associated with an increased risk of BC. This study aims to evaluate the frequencies of single nucleotide polymorphisms (SNPs) in the BRCA1, BRCA2, and PALB2 genes in patients with BC from a subset of the Iranian population in the western part of Iran. Methods Blood samples were collected from 335 patients with BC and 354 healthy matched volunteers. Genomic DNA was extracted using the salting-out method and, after quality control, was genotyped using the multiplex TaqMan allelic discrimination assay for three SNPs: rs80359550 (6174 delT) in the BRCA2 gene, rs180177102 in the PALB2 gene, and rs386833395 (185delAG) in the BRCA1 gene. Statistical analysis was performed to examine allele frequency, odds ratio, and relative risk (genetic association) in a retrospective case-control study. Results The data showed no association between rs386833395 and BC risk in the studied population (odds ratio = 1), whereas rs80359550 and rs180177102 polymorphisms were strongly associated with BC risk in patients (odds ratio = 0.01 for both, with p-values of 0.011 and 0.021, respectively). Conclusions Our findings suggest no significant association between the rs386833395 polymorphism and BC risk in the Iranian Kurdish population, while rs80359550 and rs180177102 polymorphisms were strongly associated with BC. However, the study has several limitations, including its retrospective design, a relatively small sample size, and the potential lack of generalizability to other ethnic groups within Iran. Future studies involving larger cohorts and more diverse populations are needed to confirm these results.https://doi.org/10.1186/s13053-025-00311-0Breast cancerBRCA1BRCA2PALB2Polymorphism |
| spellingShingle | Sepideh Jahangiri Zahra Abdan Massoud Houshmand Ali Souroush Mozaffar Aznab Association between single nucleotide polymorphisms of DNA repair genes (BRCA1, BRCA2, and PALB2) and breast cancer incidence in a subset of Iranian population Hereditary Cancer in Clinical Practice Breast cancer BRCA1 BRCA2 PALB2 Polymorphism |
| title | Association between single nucleotide polymorphisms of DNA repair genes (BRCA1, BRCA2, and PALB2) and breast cancer incidence in a subset of Iranian population |
| title_full | Association between single nucleotide polymorphisms of DNA repair genes (BRCA1, BRCA2, and PALB2) and breast cancer incidence in a subset of Iranian population |
| title_fullStr | Association between single nucleotide polymorphisms of DNA repair genes (BRCA1, BRCA2, and PALB2) and breast cancer incidence in a subset of Iranian population |
| title_full_unstemmed | Association between single nucleotide polymorphisms of DNA repair genes (BRCA1, BRCA2, and PALB2) and breast cancer incidence in a subset of Iranian population |
| title_short | Association between single nucleotide polymorphisms of DNA repair genes (BRCA1, BRCA2, and PALB2) and breast cancer incidence in a subset of Iranian population |
| title_sort | association between single nucleotide polymorphisms of dna repair genes brca1 brca2 and palb2 and breast cancer incidence in a subset of iranian population |
| topic | Breast cancer BRCA1 BRCA2 PALB2 Polymorphism |
| url | https://doi.org/10.1186/s13053-025-00311-0 |
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