Study Concludes That Circumcised Men Have Reduced Prostate Cancer Risk
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Comments COMMENT Morris et al. COMMENTS CASE NUMBER AND THE FINANCIAL IMPACT OF CIRCUMCISION IN sexual function, and psychological trauma to REDUCING PROSTATE CANCER Brian J. Morris, Jake Waskett* patients and their families, but these are less easy to quantify. and Stefan A. Bailis† – School of Medical Sciences and Bosch Institute, The University of Sydney, Sydney, New South Wales, Australia, *Circumcision Independent Reference Other cost analyses have been conducted in and Commentary Service, Manchester, UK, and †Research & Education Association on relation to the protection afforded by circumcision from other medical conditions Circumcision Health Effects, Bloomington, MN, USA [9], but none of these has dealt with prostate Accepted for publication 19 January 2007 cancer. The latter should be included in future cost-benefit analyses. KEYWORDS instead of 60% [7] the circumcision rate had We based our analyses on values for the age been 100% when these men were infants, the at which prostate cancer is currently circumcision, prostate cancer, cases, cost, number of cases (before rounding to two diagnosed. The only information on prepuce significant figures) would have been only circumcision rate for this age (70 years) that 167 471, meaning 66 989 (or 28.6%) fewer for we could find was from the US National a doubling of risk, implying that lack of Health and Social Life Survey [7]. Figure 1 in INTRODUCTION circumcision has contributed to 40% more that paper shows that ≈60% of 70-year-old cases of prostate cancer. For a 1.6 times men in the USA are circumcised [7]. However, Prostate cancer risk is influenced by genetic higher risk there would be 24% more cases the rate of circumcision in the 358 men born and other factors, such as a diet high in red (Table 1). between 1933 and 1947 varied, being 53% in meat (1.3-fold increase in risk). As highlighted Conservative Protestants, 64% in Mainline in various publications, including the BJU We then estimated treatment costs. If we Protestants, 68% in Catholics and 71% in International recently [1], the risk also assume the 66 989 cases above are all treated, those with no religion [7]. After World War II correlates with a history sexually transmitted and with radiation only, at $13 823/patient the circumcision rate in the USA increased to infections (STIs), most consistently [8] (compared with $12 250 for radical ≈80% for men born in 1947–1962 [7]. For gonorrhoea, but also syphilis, human prostatectomy), the cost can be calculated as those born in the 1970s, the percentage of papillomavirus, and the recently discovered $925 million (Table 1). Also shown in Table 1 men today who are circumcised is 91% [10]. Molony murine leukaemia virus homologue are the costs for terminal care, at $24 660/ For those born in the 1980s the proportion is XMRV. Such infections might establish patient [8]. 83% [10]. Thereafter the trend has been for a in the prostate a state of chronic active continued increase [11]. inflammation, which is associated with A 28.6% reduction in the 27 350 projected various cancers. STIs are more common in total deaths from prostate cancer in 2006 Lack of circumcision is just one of several uncircumcised men, three times more in a means that there would be 7822 fewer risk factors for prostate cancer. Although recent longitudinal study in New Zealand [2], fatalities had the circumcision rate been circumcision rates are high in the USA which could explain why uncircumcised men 100%. This means that terminal care costs and low in Europe, other risk factors, e.g. have been reported to have 1.6–2.0 times the would be $193 million lower. Table 1 then red meat consumption, differ, meaning a incidence of prostate cancer [3–6]. shows overall cost after summing these contrasting aetiological spectrum between figures. each region. Our findings are for the single Although lack of circumcision is only one of risk factor of lack of circumcision. Thus it several risk factors, we nevertheless examined For an overall risk of 17%, the 234 460 men would be unwise to compare the total this particular factor in isolation by who will be diagnosed in 2006 are thus from prostate cancer incidence among different calculating, for the first time, the additional 6 × 234 460 = 1406 760 males born mostly in countries in relation only to their rate of cases and costs in the USA from being 1930–1950. A 100% circumcision rate would circumcision. uncircumcised, and did so across the range of have required 40% × 1406 760 = 562 704 increases in risk that have been reported. additional circumcisions. While we have In conclusion, a 1.6–2.0-fold higher risk of not carried out ‘opportunity lost’ cost prostate cancer contributed by the lack of In the USA, ≈17% of men have prostate adjustments for these extra circumcisions, we circumcision means 45 379–66 989 (24–40%) cancer during their lifetime and the note that the current total cost of infant more cases of this disease in the USA than mean age at diagnosis is 70 years (http:// circumcision, based on 2 million circumcisions would be the case were circumcision to be www.cancer.gov). The rate of circumcision in at $195 per procedure in the USA, is $390 universal. These add an extra cost of $0.8– men born in 1933–1947 is ≈60% [7]. Based million [9], i.e. is a third of the $1.1 billion 1.1 billion annually in that country. The cost on these values we calculated the lifetime risk total savings shown in Table 1. and case burden we identified might merit of prostate cancer for both a doubling and attention by medical authorities and 1.6 times the risk conferred by a lack of Our analysis shows the number of extra cases governments, as they consider ways of circumcision (Table 1). of prostate cancer and the financial cost of reducing medical costs and the institution of these arising from the potentially important programmes aimed at reducing the incidence The American Cancer Society predicts 234 460 risk factor of lack of circumcision. However, of this major cancer in men. Although new cases of prostate cancer in 2006. If there are other costs, i.e. incontinence, loss of achieving a 100% rate of circumcision is © 2007 THE AUTHORS JOURNAL COMPILATION © 2007 BJU INTERNATIONAL 5 COMMENTS http://www.oncolink.com/resources/ TABLE 1 Current extra cases and costs of prostate cancer in relation to circumcision status in 70-year-old article.cfm?c=3&s=8&ss=23&id=587&mo men in the USA in whom the circumcision rate is 60% nth=05&year=2000. Accessed February 2007 Risk increase 2× Risk increase 1.6× 9 Schoen EJ, Colby CJ, To TT. Cost analysis Variable Uncircumcised Circumcised Uncircumcised Circumcised of neonatal circumcision in a large health Lifetime risk of prostate cancer 1 in 4.2 1 in 8.4 1 in 4.6 1 in 7.4 maintenance organization. J Urol 2006; Extra cases, % 40 24 175: 1111–5 Extra costs, US$ million 10 Xu F, Markowitz L, Sternberg M, Aral S. Treatment 925 627 Prevalence of circumcision in men in the Terminal care 193 131 United States: data from the National Total 1100 758 Health and Nutrition Examination Survey (NHANES), 1999–2002. XVI International AIDS Conference 2006: Abstract No. unlikely, our calculations nevertheless 5 Ravich A, Ravich RA. Prophylaxis of TUPE0395 illustrate the theoretical potential. Using our cancer of the prostate, penis, and cervix 11 Nelson CP, Dunn R, Wan J, Wei JT. values it becomes a simple matter to make by circumcision. NY State J Med 1951; 51: The increasing incidence of newborn estimates based on a specified rate of 1519–20 circumcision: data from the nationwide circumcision of <100%. Different numerators 6 Apt A. Circumcision and prostatic inpatient sample. J Urol 2005; 173: 978– will naturally apply to rate and medical costs cancer. Acta Med Scand 1965; 178: 81 in countries other than the USA. We also 493–504 acknowledge that the decision to circumcise 7 Laumann EO, Masi CM, Zuckerman EW. Correspondence: Brian J Morris, School of should not be made based on the risk of Circumcision in the United States. Medical Sciences and Bosch Institute, The prostate cancer alone, but should be Prevalence, prophylactic effects, and University of Sydney, Sydney, NSW 2006, considered among many other better sexual practice. JAMA 1997; 277: Australia. known conditions in males and in their 1052–7 e-mail: [email protected] female sexual partners, the risk of which 8 Gregg V. Aggressive treatment for early is reduced by circumcision (reviewed in prostate cancer cost-effective. Oncolink – Abbreviation: STI, sexually transmitted http://www.circinfo.net). If considering just Cancer News 2000. Available at: infection. prostate cancer, such decisions might also Blackwell Publishing LtdOxford, UKBJUBJU International1464-4096© 2007 THE AUTHORS; JOURNAL COMPILATION © 2007 BJU INTERNATIONAL2007 consider risk factors such as a strong family 99 •••• history of this disease. Comments COMMENT Gunendran et al. CONFLICT OF INTEREST PLANNING FOR THE FUTURE: CAN THE CORE UROLOGIST PROVIDE SAFE AND EFFECTIVE OUT-OF-HOURS COVER? None declared. Thiruendran Gunendran, Andrew Sinclair* and Ian Pearce† – Departments of Urology, Royal Preston Hospital, *Stepping Hill Hospital and †Manchester Royal Infirmary, Manchester, UK REFERENCES Accepted for publication 12 January 2007 1 Radhakrishnan S, Lee A, Oliver T, Chinegwundoh F. An infectious cause for prostate cancer. BJU Int 2007; 99: INTRODUCTION experience intent on a career in urology can 239–40 be appointed to join this scheme at year 3, 2 Fergusson DM, Boden JM, Horwood LJ. Changes to urological services have led hence spending only 3 years before being Circumcision status and risk of sexually to a major re-think in ongoing training for awarded a Certificate for Completion of transmitted infection in young adult urological consultants of the future.