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Chidambaram A, Prabhakaran R, Sivasamy S, Kanagasabai T, Thekkumalai M, Singh A, Tyagi MS, Dhandayuthapani S. Male Breast Cancer: Current Scenario and Future Perspectives. Technol Cancer Res Treat 2024; 23:15330338241261836. [PMID: 39043043 PMCID: PMC11271170 DOI: 10.1177/15330338241261836] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/13/2023] [Revised: 05/06/2024] [Accepted: 05/28/2024] [Indexed: 07/25/2024] Open
Abstract
Male breast cancer (MBC), one of the rare types of cancer among men where the global incidence rate is 1.8% of all breast cancers cases with a yearly increase in a pace of 1.1%. Since the last 10 years, the incidence has been increased from 7.2% to 10.3% and the mortality rate was decreased from 11% to 3.8%. Nevertheless, the rate of diagnoses has been expected to be around 2.6% in the near future, still there is a great lack in studies to characterize the MBC including the developed countries. Based on our search, it is evidenced from the literature that the number of risk factors for the cause of MBC are significant, which includes the increase in age, family genetic history, mutations in specific genes due to various environmental impacts, hormonal imbalance and unregulated expression receptors for specific hormones of high levels of estrogen or androgen receptors compared to females. MBCs are broadly classified into ductal and lobular carcinomas with further sub-types, with some of the symptoms including a lump or swelling in the breast, redness of flaky skin in the breast, irritation and nipple discharge that is similar to the female breast cancer (FBC). The most common diagnostic tools currently in use are the ultrasound guided sonography, mammography, and biopsies. Treatment modalities for MBC include surgery, radiotherapy, chemotherapy, hormonal therapy, and targeted therapies. However, the guidelines followed for the diagnosis and treatment modalities of MBC are mostly based on FBC that is due to the lack of prospective studies related to MBC. However, there are distinct clinical and molecular features of MBC, it is a need to develop different clinical methods with more multinational approaches to help oncologist to improve care for MBC patients.
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Affiliation(s)
- Anitha Chidambaram
- Department of Biochemistry, PRIST Deemed to be University, Thanjavur, TN, India
| | - Rajkumar Prabhakaran
- Central Research Facility, Santosh Deemed to be University, Ghaziabad, UP, India
| | - Sivabalan Sivasamy
- Central Research Facility, Santosh Deemed to be University, Ghaziabad, UP, India
| | - Thanigaivelan Kanagasabai
- Department of Biochemistry, Cancer Biology, Neuroscience and Pharmacology, Meharry Medical College, Nashville, TN, USA
| | - Malarvili Thekkumalai
- Department of Biochemistry, Center for Distance Education, Bharathidasan University, Tiruchirappalli, TN, India
| | - Ankit Singh
- Department of Community Medicine, United Institute of Medical Sciences, Prayagraj, UP, India
| | - Mayurika S. Tyagi
- Department of Immuno Hematology and Blood Transfusion, Santosh Deemed to be University, Ghaziabad, UP, India
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A study of mechanistic mapping of novel SNPs to male breast cancer. Med Oncol 2019; 36:70. [PMID: 31203460 DOI: 10.1007/s12032-019-1290-0] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/11/2019] [Accepted: 06/01/2019] [Indexed: 01/10/2023]
Abstract
Alterations in BRCA2, PALB2, CHEK2, and p53 genes have been identified for their association with male breast cancer in various studies. The incidence of male breast cancer in India is consistent with its global rate. The present study was carried out with an aim to evaluate the genetic alterations in male breast cancer patients from Malwa region of Punjab, India. Four male breast cancer patients belonging to different families were recruited from Guru Gobind Singh Medical College and Hospital, Faridkot, India. A total of 51 genes reported with implications in the pathogenesis of breast cancer were screened using next generation sequencing. Germline variations were found in BRCA1, BRCA2, PMS2, p53, and PALB2 genes, previously reported to be associated with MBC as well as FBC. In addition to these, 13 novel missense alterations were detected in eight genes including STK11, FZR1, PALB2, BRCA2, NF2, BAP1, BARD1, and CHEK2. Impact of these missense alterations on structure and function of protein was also analyzed through molecular dynamics simulation. Structural analysis of these single nucleotide polymorphisms (SNPs) revealed significant impact on the encoded protein functioning.
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