AUB is common and affects women worldwide. AUB and heavy menstrual bleeding (HMB) are common conditions affecting 14% to 25% of women of reproductive age.[5]Fraser I, Langham S, Uhl-Hochgraeber K. Health-related quality of life and economic burden of abnormal uterine bleeding. Expert Rev Obstet Gynecol. 2009;4(2):179-89.[6]Shapley M, Jordan K, Croft PR. An epidemiological survey of symptoms of menstrual loss in the community. Br J Gen Pract. 2004 May;54(502):359-63.
https://www.ncbi.nlm.nih.gov/pmc/articles/PMC1266170
http://www.ncbi.nlm.nih.gov/pubmed/15113519?tool=bestpractice.com
A US population-based survey of women ages 18 to 50 years reported an annual prevalence rate of 53 per 1000 women.[7]Kjerulff KH, Erickson BA, Langenberg PW. Chronic gynecological conditions reported by US women: findings from the National Health Interview Survey, 1984 to 1992. Am J Public Health. 1996 Feb;86(2):195-9.
https://www.ncbi.nlm.nih.gov/pmc/articles/PMC1380327
http://www.ncbi.nlm.nih.gov/pubmed/8633735?tool=bestpractice.com
AUB is the fourth most common reason for referral to UK gynecologic services.[8]Royal College of Obstetricians and Gynaecologists. National heavy menstrual bleeding audit: a national audit to assess patient outcomes and experiences of care for women with heavy menstrual bleeding in England and Wales. Second Annual Report. July 2012 [internet publication].
https://www.rcog.org.uk/globalassets/documents/guidelines/research--audit/nationalhmbaudit_2ndannualreport_11.07.12_forweb.pdf
Variation in menstrual flow and cycle length are common at the extremes of reproductive age (during early teenage years and preceding menopause).
Annually, 1 million UK women seek help for HMB, and an estimated 3.5 million work days are lost.[6]Shapley M, Jordan K, Croft PR. An epidemiological survey of symptoms of menstrual loss in the community. Br J Gen Pract. 2004 May;54(502):359-63.
https://www.ncbi.nlm.nih.gov/pmc/articles/PMC1266170
http://www.ncbi.nlm.nih.gov/pubmed/15113519?tool=bestpractice.com
A national 4-year Royal College of Obstetricians and Gynaecologists' audit of HMB in the UK found that 43% of women received surgery within a year of their first attendance at hospital.[9]Geary RS, Gurol-Urganci I, Kiran A, et al. Factors associated with receiving surgical treatment for menorrhagia in England and Wales: findings from a cohort study of the National Heavy Menstrual Bleeding Audit. BMJ Open. 2019 Feb 19;9(2):e024260.
https://www.ncbi.nlm.nih.gov/pmc/articles/pmid/30782899
http://www.ncbi.nlm.nih.gov/pubmed/30782899?tool=bestpractice.com
Considering 47% of all UK-born babies are to women aged ≥30, fertility-ending surgery is frequently unacceptable.[10]UK Office for National Statistics. Statistical bulletin: who is having babies? December 2009 [internet publication].
https://webarchive.nationalarchives.gov.uk/20110824211138/http://www.statistics.gov.uk/pdfdir/births1209.pdf
There is an unmet clinical need in managing women with HMB.