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Breast Cancer Genetics Knowledge and Testing Intentions among Nigerian Professional Women

  • Original Research
  • Published:
Journal of Genetic Counseling

Abstract

Genetic testing services for breast cancer are well established in developed countries compared to African populations that bear a disproportionate burden of breast cancer (BC). The objective of this study is to examine the knowledge of professional Nigerian women about BC genetics and their intentions to utilize genetic testing services when it is made available in Nigeria. In this study, 165 lecturers and 189 bankers were recruited and studied using a validated self-administered questionnaire. The respondents’ mean age was 34.9 years (SD = 10.9), 6.5% had family history of BC, and 84.7% had limited knowledge of breast cancer genetics. The proportion of women with genetic testing intentions for breast cancer was 87.3%. Health care access (OR = 2.35, 95% CI, 1.07–5.13), religion (OR = 3.51, 95% CI, 1.03–11.92), and perceived personal risk if a close relative had breast cancer (OR = 2.31, 95% CI, 1.05–5.08) independently predicted testing intentions. The genetic testing intentions for BC were high despite limited knowledge about breast cancer genetics. Promotion of BC genetics education as well as efforts to make BC genetic testing services available in Nigeria at reduced cost remains essential.

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References

  • Adebamowo, C. A., & Ajayi, O. O. (2000). Breast cancer in Nigeria. West African Journal of Medicine, 19(3), 179–191.

    PubMed  CAS  Google Scholar 

  • Akhigbe, A. O., & Omuemu, V. O. (2009). Knowledge, attitudes and practice of breast cancer screening among female health workers in a Nigerian urban city. BioMedical Central Cancer, 9(1), 203. https://doi.org/10.1186/1471-2407-9-203.

  • Akinola, R., Wright, K., Osunfidiya, O., Orogbemi, O., & Akinola, O. (2011). Mammography and mammographic screening: are female patients at a teaching hospital in Lagos, Nigeria, aware of these procedures? Diagnostic and Interventional Radiology, 17(2), 125–129. https://doi.org/10.4261/1305-3825.DIR.3078-09.2.

    Article  PubMed  Google Scholar 

  • Amin, T. T., Al-Wadaani, H. A., Al-Quaimi, M. M., Aldairi, N. A., Alkhateeb, J. M., & Al-Jaafari, A. A. (2012). Saudi women’s interest in breast cancer gene testing: possible influence of awareness, perceived risk and socio-demographic factors. Asian Pacific Journal of Cancer Prevention, 13, 3879–3887. https://doi.org/10.7314/APJCP.2012.13.8.3879.

    Article  PubMed  Google Scholar 

  • Antoniou, A., Pharoah, P. D. P., Narod, S., Risch, H. A., Eyfjord, J. E., Hopper, J. L., et al. (2003). Average risks of breast and ovarian cancer associated with BRCA1 or BRCA2 mutations detected in case series unselected for family history: a combined analysis of 22 studies. American Journal of Human Genetics, 72, 1117–1130.

    Article  PubMed  PubMed Central  CAS  Google Scholar 

  • Armstrong, K., Weber, B., Ubel, P. A., Guerra, C., & Schwartz, J. S. (2012). Interest in BRCA1/2 testing in a primary care population. Preventive Medicine, 34(6), 590–595. https://doi.org/10.1006/pmed.2002.1022.

    Article  Google Scholar 

  • Bellcross, C. A., Peipins, L. A., McCarty, F. A., Rodriguez, J. L., Hawkins, N. A., Alford, S. H., & Leadbetter, S. (2015). Characteristics associated with genetic counseling referral and BRCA1/2 testing among women in a large integrated health system. Genetics in Medicine, 17(1), 43–50.

    Article  PubMed  CAS  Google Scholar 

  • Botoseneanu, A., Alexander, J. A., & Banaszak-Holl, J. (2011). To test or not to test? The role of attitudes, knowledge, and religious involvement among US adults on intent-to-obtain adult genetic testing. Health Education & Behavior, 38(6), 617–628.

    Article  Google Scholar 

  • Bottorff, J. L., Ratner, P. A., Balneaves, L. G., Richardson, C. G., McCullum, M., Hack, T., … Buxton, J. (2002). Women’s interest in genetic testing for breast cancer risk: the influence of socio-demographics and knowledge. Cancer Epidemiological Biomarkers and Prevention., 11, 89–95.

  • Bruno, M., Tommasi, S., Stea, B., Quaranta, M., Schittulli, F., Mastropasqua, A., … Paradiso, A. (2004). Awareness of breast cancer genetics and interest in predictive genetic testing: a survey of a southern Italian population. Annals of Oncology, 15(1), 48–54.

  • Bruno, M., Digennaro, M., Tommasi, S., Stea, B., Danese, T., Schittulli, F., & Paradiso, A. (2010). Attitude towards genetic testing for breast cancer susceptibility: a comparison of affected and unaffected women. European Journal of Cancer Care, 19, 360–368. https://doi.org/10.1111/j.1365-2354.2009.01067.x.

    Article  PubMed  CAS  Google Scholar 

  • Caulfield, T., Ries, N. M., Ray, P. N., Shuman, C., & Wilson, B. (2010). Direct-to-consumer genetic testing: good, bad or benign? Clinical Genetics, 77(2), 101–105.

    Article  PubMed  CAS  Google Scholar 

  • Chen, S., & Parmigiani, G. (2007). Meta-analysis of BRCA1 and BRCA2 penetrance. Journal of Clinical Oncology, 25(11), 1329–1333. https://doi.org/10.1200/JCO.2006.09.1066.

    Article  PubMed  PubMed Central  Google Scholar 

  • Dandara, C., Greenberg, J., Lambie, L., Lombard, Z., Naicker, T., Ramesar, R., et al. (2013). Direct-to-consumer genetic testing: to test or not to test, that is the question. SAMJ: South African Medical Journal, 103(8), 510–512.

    Article  PubMed  Google Scholar 

  • Durfy, S. J., Bowen, D. J., McTiernan, A., Sporleder, J., & Burke, W. (1999). Attitudes and interest in genetic testing for breast and ovarian cancer susceptibility in diverse groups of women in western Washington. Cancer Epidemiology Biomarkers Prevention, 8, 369–375.

    CAS  Google Scholar 

  • Easton, D. F., Pharoah, P. D., Antoniou, A. C., Tischkowitz, M., Tavtigian, S. V., Nathanson, K. L., Devilee, P., Meindl, A., Couch, F. J., Southey, M., Goldgar, D. E., Evans, D. G., Chenevix-Trench, G., Rahman, N., Robson, M., Domchek, S. M., & Foulkes, W. D. (2015). Gene-panel sequencing and the prediction of breast-cancer risk. New England Journal of Medicine, 372(23), 2243–2257. https://doi.org/10.1056/NEJMsr1501341.

  • Fackenthal, J. D., Sveen, L., Gao, Q., Kohlmeir, E. K., Adebamowo, C., Ogundiran, T. O., … Olopade, O. I. (2005). Complete allelic analysis of BRCA1 and BRCA2 variants in young Nigerian breast cancer patients. Journal of Medical Genetics, 42, 276–281. https://doi.org/10.1136/jmg.2004.020446.

  • Fagbemiro, L., & Adebamowo, C. (2014). Knowledge and attitudes to personal genomics testing for complex diseases among Nigerians. BioMed Central Medical Ethics, 15(1), 34. https://doi.org/10.1186/1472-6939-15-34.

  • Forouzanfar, M. H., Foreman, K. J., Delossantos, A. M., Lozano, R., Lopez, A. D., Murray, C. J., & Naghavi, M. (2011). Breast and cervical cancer in 187 countries between 1980 and 2010: a systematic analysis. Lancet, 378(9801), 1461–1484. https://doi.org/10.1016/S0140-6736(11)61351-2.

    Article  PubMed  Google Scholar 

  • Halbert, C. H., Kessler, L. J., & Mitchell, E. (2005). Genetic testing for inherited breast cancer risk in African Americans. Cancer Investigation, 23(4), 285–295.

    Article  PubMed  Google Scholar 

  • Hughes, C., Gomez-Caminero, A., Benkendorf, J., Kerner, J., Isaacs, C., Barter, J., & Lerman, C. (1997). Ethnic differences in knowledge and attitudes about BRCA1 testing in women at increased risk. Patient Education and Counseling, 32, 51–62.

    Article  PubMed  CAS  Google Scholar 

  • Ibrahim, N. A., & Odusanya, O. O. (2009). Knowledge of risk factors, beliefs and practices of female healthcare professionals towards breast cancer in a tertiary institution in Lagos, Nigeria. BioMed Central Cancer, 9(1), 76. https://doi.org/10.1186/1471-2407-9-76.

  • Jedy-Agba, E., Curado, M. P., Ogunbiyi, O., Ogaa, E., Fabowale, T., Igbinoba, F., … Adebamowo, C. A. (2012). Cancer Incidence in Nigeria: a report from population-based cancer registries. Cancer Epidemiology, 36(5), 271–278. e271–e278. https://doi.org/10.1016/j.canep.2012.04.007.

  • Jegede, A. S. (2009). Culture and genetic screening in Africa. Developing World Bioethics, 9(3), 128–137. https://doi.org/10.1111/j.1471-8847.2009.00259.x.

    Article  PubMed  Google Scholar 

  • Kash, K. M., Ortega-Verdejo, K., Dabney, M. K., Holland, J. C., Miller, D. G., & Osborne, M. P. (2000). Psychosocial aspects of cancer genetics: women at high risk for breast and ovarian cancer. Semin Surgical Oncology, 18(4), 333–338.

    Article  CAS  Google Scholar 

  • Kessler, L., Collier, A., Brewster, K., Smith, C., Weathers, B., Wileyto, E. P., & Halbert, C. H. (2005). Attitudes about genetic testing and genetic testing intentions in African American women at increased risk for hereditary breast cancer. Genetics in Medicine, 7(4), 230–238.

    Article  PubMed  Google Scholar 

  • Kessler, L., Collier, A., & Halbert, C. H. (2007). Knowledge about genetics among African Americans. Journal of Genetic Counseling, 16(2), 191–200.

    Article  PubMed  Google Scholar 

  • Kinney, A. Y., Croyle, R. T., Dudley, W. N., Bailey, C. A., Pelias, M. K., & Neuhausen, S. L. (2001). Knowledge, attitudes, and interest in breast–ovarian cancer gene testing: a survey of a large African-American kindred with a BRCA1 mutation. Preventive Medicine, 33, 543–551.

    Article  PubMed  CAS  Google Scholar 

  • Kinney, A. Y., Gammon, A., Coxworth, J., Simonsen, S. E., & Arce-Laretta, M. (2010). Exploring attitudes, beliefs, and communication preferences of Latino community members regarding BRCA1/2 mutation testing and preventive strategies. Genetics in Medicine, 12(2), 105–115. https://doi.org/10.1097/GIM.0b013e3181c9af2d.

    Article  PubMed  PubMed Central  Google Scholar 

  • Lerman, C., Seay, J., Balshem, A., & Audrain, J. (1995). Interest in genetic testing among first-degree relatives of breast cancer patients. American Journal of Medical Genetics, 57(3), 385–392. https://doi.org/10.1002/ajmg.1320570304.

    Article  PubMed  CAS  Google Scholar 

  • Lerman, C., Narod, S., Schulman, K., Hughes, C., Gomez-Caminero, A., Bonney, G., … Lynch, H. (1996). BRCA1 testing in families with hereditary breast-ovarian cancer: a prospective study of patient decision making and outcomes. JAMA, 275(12), 1885–1892.

  • Lerman, C., Biesecker, B., Benkendorf, J. L., Kerner, J., Gomez-Caminero, A., Hughes, C., & Reed, M. M. (1997). Controlled trial of pretest education approaches to enhance informed decision-making for BRCA1 gene testing. Journal National Cancer Institute, 89(2), 148–157. https://doi.org/10.1093/jnci/89.2.148.

    Article  CAS  Google Scholar 

  • MacNew, H. G., Rudolph, R., Brower, S. T., Beck, A. N., & Meister, E. A. (2010). Assessing the knowledge and attitudes regarding genetic testing for breast cancer risk in our region of southeastern Georgia. The Breast Journal, 16(2), 189–192. https://doi.org/10.1111/j.1524-4741.2009.00880.x.

    Article  PubMed  CAS  Google Scholar 

  • Mavaddat, N., Peock, S., Frost, D., Ellis, S., Platte, R., Fineberg, E., … Easton, D. F. (2013). Cancer risks for BRCA1 and BRCA2 mutation carriers: results from prospective analysis of EMBRACE. Journal of the National Cancer Institute., 105(11), 812–822. https://doi.org/10.1093/jnci/djt095.

  • Miki, Y., Swensen, J., Shattuck-Eidens, D., Futreal, P. A., Harshman, K., Tavtigian, S., … Skolnick, M. H. (1994). A strong candidate for breast cancer susceptibility gene BRCA 1. Science, 266(5182), 66–71.

  • Mogilner, A., Otten, M., Cunningham, J. D., & Brower, S. T. (1998). Awareness and attitudes concerning BRCA gene testing. Annals of Surgical Oncology, 5(7), 607–612.

    Article  PubMed  CAS  Google Scholar 

  • Montazeri, A., Vahdaninia, M., Harirchi, I., Harirchi, A. M., Sajadian, A., Khaleghi, F., … Jarvandi, S. (2008). Breast cancer in Iran: need for greater women awareness of warning signs and effective screening methods. Asia Pacific Family Medicine, 7(1), 6. https://doi.org/10.1186/1447-056X-7-6.

  • Moyer, V. A., LeFevre, M. L., Siu, A. L., Peters, J. J., Baumann, L. C., Bibbins-Domingo, K., … Pignone, M. P. (2014). Risk assessment, genetic counseling and genetic testing for BRCA-related cancer in women: U.S. preventive task force recommendation statement. Annals of Internal Medicine, 160(4), 271–281. https://doi.org/10.7326/M13-2747.

  • Obaji, N. C., Elom, H. A., Agwu, U. M., Nwigwe, C. G., Ezeonu, P. O., & Umeora, O. U. J. (2013). Awareness and practice of breast self-examination among market women in Abakaliki, South East Nigeria. Annals of Medical and Health Sciences Research, 1(7), 7–12. https://doi.org/10.4103/2141-9248.109457.

    Article  Google Scholar 

  • Obajimi, M. O., Ajayi, I. O., Oluwasola, A. O., Adedokun, B. O., Adeniji-Sofoluwe, A. T., Mosuro, O. A., Akingbola, T. S., Bassey, O. S., Umeh, E., Soyemi, T. O., Adegoke, F., Ogungbade, I., Ukaigwe, C., & Olopade, O. I. (2013). Level of awareness of mammography among women attending outpatient clinics in a teaching hospital in Ibadan, South-West Nigeria. BioMedical Central Public Health 13(1), 14. https://doi.org/10.1186/1471-2458-13-40.

  • Odusanya, O. O., & Tayo, O. O. (2001). Breast cancer knowledge, attitude and practice among nurses in Lagos Nigeria. Acta Oncologica, 40(7), 844–848.

    Article  PubMed  CAS  Google Scholar 

  • Okobia, M. N., Bunker, C. H., Okonofua, F. E., & Osime, U. (2006). Knowledge attitude and practice of Nigerian women towards breast cancer; a cross sectional study. World Journal of Surgical Oncology, 4, 11. https://doi.org/10.1186/1477-7819-4-11.

    Article  PubMed  PubMed Central  Google Scholar 

  • Olajide, T. O., Ugburo, A. O., Habeebu, M. O., Lawal, A. O., Afolayan, M. O., & Mofikoya, M. O. (2014). Awareness and practice of breast screening and its impact on early detection and presentation among breast cancer patients attending a clinic in Lagos, Nigeria. Nigerian Journal of Clinical Practice, 17(6), 802–807. https://doi.org/10.4103/1119-3077.144404.

    Article  PubMed  CAS  Google Scholar 

  • Peters, N., Domchek, S. M., Rose, A., Polis, R., Stopfer, J., & Armstrong, K. (2005). Knowledge, attitudes, and utilization of brca1/2 testing among women with early-onset breast cancer. Genetic testing, 9(1), 48–53.

    Article  PubMed  CAS  Google Scholar 

  • Quinlivan, J. A., Battikhi, Z., & Petersen, R. W. (2014). What factors impact upon a woman’s decision to undertake genetic cancer testing? Frontiers in Oncology, 3(1), 325. https://doi.org/10.3389/fonc.2013.00325.

  • Sanderson, S. C., Wardle, J., Jarvis, M. J., & Humphries, S. E. (2004). Public interest in genetic testing for susceptibility to heart disease and cancer: a population-based survey in the UK. Preventive Medicine, 39, 458–464. https://doi.org/10.1016/j.ypmed.2004.04.051.

    Article  PubMed  Google Scholar 

  • Satia, J. A., McRitchie, S., Kupper, L. L., & Halbert, C. H. (2006). Genetic testing for colon cancer among African-Americans in North Carolina. Preventive Medicine, 42(1), 51–59.

    Article  PubMed  Google Scholar 

  • Sheppard, V. B., Graves, K. D., Christopher, J., Hurtado-de-Mendoza, A., Talley, C., & Williams, K. P. (2014). African American women’s limited knowledge and experiences with genetic counseling for hereditary breast cancer. Journal of Genetic Counseling, 23(3), 311–322.

    Article  PubMed  Google Scholar 

  • Sitas, F., Parkin, D. M., Chirenje, M., Stein, L., Abratt, R., & Wabinga, H. (2008). Part II: Cancer in indigenous Africans—causes and control. The Lancet Oncology, 9(8), 786–795. https://doi.org/10.1016/S1470-2045(08)70198-0.

    Article  PubMed  Google Scholar 

  • Spruill, I., Coleman, B., & Collins-McNeil, J. (2009). Knowledge, beliefs and practices of African-American nurses regarding genetics/genomics. Journal of National Black Nurses' Association: JNBNA, 20(2), 20–24.

    PubMed  Google Scholar 

  • Struewing, J. P., Lerman, C., Kase, R. G., Giambarresi, T. R., & Tucker, M. A. (1995). Anticipated uptake and impact of genetic testing in hereditary breast and ovarian cancer families. Cancer Epidemiological Biomarkers and Prevention, 4(2), 169–173.

    CAS  Google Scholar 

  • Su, P. (2013). Direct-to-consumer genetic testing: a comprehensive view. The Yale Journal of Biology and Medicine, 86(3), 359–365.

    PubMed  PubMed Central  Google Scholar 

  • Suh, M. A., Atashili, J., Fuh, E. A., & Eta, V. A. (2012). Breast self-examination and breast cancer awareness in women in developing countries: a survey of women in Buea, Cameroon. BioMed Central Research Notes, 9(5), 627. https://doi.org/10.1186/1756-0500-5-627.

    Article  Google Scholar 

  • Tong, R. (2013). Ethical concerns about genetic testing and screening. North Carolina Medical Journal, 74(6), 522–525.

    PubMed  Google Scholar 

  • World Health Organization. (2002). Genomic and World Health/report of the Advisory Committee on Health Research. http://www.who.int/rpc/genomics_report.pdf.

  • World Health Organization. (2014). Cancer country profiles. Nigeria. http://www.who.int/cancer/country-profiles/nga_en.pdf?ua=1.

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Funding

This study was not funded by any external body aside the authors.

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Correspondence to Samuel O. Ngene.

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Conflict of Interest

Samuel O. Ngene, Babatunde Adedokun, Prisca Adejumo, and Olufunmilayo Olopade declare that they have no conflict of interest.

Human Studies and Informed Consent

All the respondents in the study gave written and signed informed consent. All procedures followed were in accordance with the ethical standards of the responsible committee on human experimentation (institutional and national) and with the Helsinki Declaration of 1975, as revised in 2000 (5). Informed consent was obtained from all patients for being included in the study. No animal studies were carried out by the authors for this article.

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No animal studies were carried out by the authors for this article.

Ethical Approval

Ethical approval for this study was obtained from the Oyo State Research Ethics Review Committee, Ministry of Health, Ibadan, Oyo State, Nigeria.

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Ngene, S.O., Adedokun, B., Adejumo, P. et al. Breast Cancer Genetics Knowledge and Testing Intentions among Nigerian Professional Women. J Genet Counsel 27, 863–873 (2018). https://doi.org/10.1007/s10897-017-0194-4

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