Tehran University of Medical Sciences International Journal of Hematology-Oncology and Stem Cell Research 2008-2207 17 2 2023 04 17 65 74 Nazanin Joudaki 1)Department of Immunology, Faculty of Medicine, Ahvaz Jundishapur University of Medical Sciences, Ahvaz, Iran 2) Student Research Committee, Ahvaz Jundishapur University of Medical Sciences, Ahvaz, Iran 3) Department of Immunology, School of Medicine, Mazandaran University of Medical Sciences, Sari, Iran Ali Khodadadi 1) Department of Immunology, Faculty of Medicine, Ahvaz Jundishapur University of Medical Sciences, Ahvaz, Iran 2) Cancer, Petroleum and Environmental Pollutants Research Center, Ahvaz Jundishapur University of Medical Sciences, Ahvaz, Iran Abdolhassan Talaiezadeh 1) Cancer, Petroleum and Environmental Pollutants Research Center, Ahvaz Jundishapur University of Medical Sciences, Ahvaz, Iran & Department of Surgery, Ahvaz Jundishapur University of Medical Sciences, Ahvaz, Iran Hosein Jodat Student Research Committee, Ahvaz Jundishapur University of Medical Sciences, Ahvaz, Iran Javad Jodat Student Research Committee, Ahvaz Jundishapur University of Medical Sciences, Ahvaz, Iran Ali Asadirad Department of Immunology, Faculty of Medicine, Ahvaz Jundishapur University of Medical Sciences, Ahvaz, Iran 2021 12 13 2022 08 18 Background: Breast cancer and cervix cancer are the prevalent and deadly types of solid tumors around the world. According to the importance of cancer, it is necessary to understand predisposing factors that affect cancer risk. In this regard, previous studies suggest that blood types particularly ABO and Rh-Hr Blood-Group System could play roles in the risk and different features of cancers. In the present study, we aimed to evaluate the potential of ABO and Rh blood groups as risk factors for breast cancer and cervix cancer. Materials and Methods: A retrospective study included 109 and 14 patients diagnosed with breast cancer and cervix cancer, respectively with known ABO and Rh blood types, between 2018 and 2020 in Khuzestan province, Iran. For compression of ABO blood groups distribution between the cancer patients group and the healthy population, we used data from a large-scale study that report the distribution of ABO blood groups in 29,922 blood donors in Khuzestan province. Results: Based on obtained results the most frequent blood group is O followed by B, A, and AB in breast cancer and followed by A, B, and AB in cervix cancer. Results showed no significant association between ABO and Rh and the risk of breast and cervix cancer. Moreover, there is no relationship between blood types and clinic pathological features of breast cancer. Conclusion:  Based on our data, ABO and in this regard, previous studies suggest that blood types particularly ABO and Rh-Hr Blood-Group System could play roles in the risk and different features of cancers. In the present study, we aimed to evaluate the potential of ABO and Rh blood groups as risk factors for breast cancer and cervix cancer do have not any association with the risk of breast and cervix cancer and their characteristics.  https://ijhoscr.tums.ac.ir/index.php/ijhoscr/article/view/1765 https://ijhoscr.tums.ac.ir/index.php/ijhoscr/article/download/1765/965