1. Siegel RL, Miller KD, Jemal A. Cancer statistics, 2019. CA: a cancer journal for clinicians. 2019;69(1):7-34. 2. Al-Mansouri LJ, Alokail MS. Molecular basis of breast cancer. Saudi medical journal. 2006;27(1):9-16. 3. Piao H-l, Ma L. Non-coding RNAs as regulators of mammary development and breast cancer. Journal of mammary gland biology and neoplasia. 2012;17(1):33-42. 4. Hangauer MJ, Vaughn IW, McManus MT. Pervasive transcription of the human genome produces thousands of previously unidentified long intergenic noncoding RNAs. PLoS genetics. 2013;9(6):e1003569. 5. Ashwal-Fluss R, Meyer M, Pamudurti NR, Ivanov A, Bartok O, Hanan M, et al. circRNA biogenesis competes with pre-mRNA splicing. Molecular cell. 2014;56(1):55-66. 6. Suzuki H, Zuo Y, Wang J, Zhang MQ, Malhotra A, Mayeda A. Characterization of RNase R-digested cellular RNA source that consists of lariat and circular RNAs from pre-mRNA splicing. Nucleic acids research. 2006;34(8):e63-e. 7. Han B, Chao J, Yao H. Circular RNA and its mechanisms in disease: from the bench to the clinic. Pharmacology & therapeutics. 2018;187:31-44. 8. Wu J, Qi X, Liu L, Hu X, Liu J, Yang J, et al. Emerging epigenetic regulation of circular RNAs in human cancer. Molecular Therapy-Nucleic Acids. 2019;16:589-96. 9. Hansen TB, Jensen TI, Clausen BH, Bramsen JB, Finsen B, Damgaard CK, et al. Natural RNA circles function as efficient microRNA sponges. Nature. 2013;495(7441):384-8. 10. Wang X, Fang L. Advances in circular RNAs and their roles in breast Cancer. Journal of Experimental & Clinical Cancer Research. 2018;37(1):1-12. 11. Glažar P, Papavasileiou P, Rajewsky N. circBase: a database for circular RNAs. Rna. 2014;20(11):1666-70. 12. Ni Y, Lu C, Wang W, Gao W, Yu C. circBANP promotes colorectal cancer growth and metastasis via sponging let-7d-5p to modulate HMGA1/Wnt/β-catenin signaling. Molecular Therapy-Oncolytics. 2021;21:119-33. 13. Zhu M, Xu Y, Chen Y, Yan F. Circular BANP, an upregulated circular RNA that modulates cell proliferation in colorectal cancer. Biomedicine & Pharmacotherapy. 2017;88:138-44. 14. Han J, Zhao G, Ma X, Dong Q, Zhang H, Wang Y, et al. CircRNA circ-BANP-mediated miR-503/LARP1 signaling contributes to lung cancer progression. Biochemical and biophysical research communications. 2018;503(4):2429-35. 15. Abdollahzadeh R, Daraei A, Mansoori Y, Sepahvand M, Amoli MM, Tavakkoly‐Bazzaz J. Competing endogenous RNA (ceRNA) cross talk and language in ceRNA regulatory networks: A new look at hallmarks of breast cancer. Journal of cellular physiology. 2019;234(7):10080-100. 16. Stiel L, Adkins‐Jackson PB, Clark P, Mitchell E, Montgomery S. A review of hair product use on breast cancer risk in African American women. Cancer medicine. 2016;5(3):597-604. 17. Turesky RJ, Freeman JP, Holland RD, Nestorick DM, Miller DW, Ratnasinghe DL, et al. Identification of aminobiphenyl derivatives in commercial hair dyes. Chemical research in toxicology. 2003;16(9):1162-73. 18. Hamblen EL, Cronin MT, Schultz TW. Estrogenicity and acute toxicity of selected anilines using a recombinant yeast assay. Chemosphere. 2003;52(7):1173-81. 19. Knower KC, To SQ, Leung Y-K, Ho S-M, Clyne CD. Endocrine disruption of the epigenome: a breast cancer link. Endocrine-related cancer. 2014;21(2):T33. 20. Diamanti-Kandarakis E, Bourguignon J-P, Giudice LC, Hauser R, Prins GS, Soto AM, et al. Endocrine-disrupting chemicals: an Endocrine Society scientific statement. Endocrine reviews. 2009;30(4):293-342. 21. Teng Y, Manavalan TT, Hu C, Medjakovic S, Jungbauer A, Klinge CM. Endocrine disruptors fludioxonil and fenhexamid stimulate miR-21 expression in breast cancer cells. Toxicological sciences. 2013;131(1):71-83.