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BONE HEALTH AND ENDOCRINE THERAPY IN BREAST OR PROSTATE CANCER<br />

FUTURE DIRECTIONS<br />

With our aging population, it is expected that the number of<br />

people affected by osteoporosis and with cancer will increase.<br />

The need to co-manage these diagnoses will continue into the<br />

foreseeable future. Areas of osteoporosis research include<br />

targeting sclerostin and thereby potentially inducing osteoanabolic<br />

activity, which may or may not be appropriate for<br />

use in patients with a history of breast or prostate cancer. As<br />

novel bone signaling pathways are targeted, the effect on cancer<br />

signaling must also be considered. Likewise, as novel anticancer<br />

therapies are developed, their effects on bone health<br />

should be investigated.<br />

There are insuffıcient data to guide all possible clinically<br />

relevant bone and endocrine situations faced in the medical<br />

oncology clinic. Indeed, there are many questions that have<br />

not been formally studied, most notably where fractures are<br />

the primary endpoint. A fundamental goal of bone health<br />

care is to prevent fractures. BMD is a surrogate measurement<br />

used in risk assessment for fracture but is not the endgame. It<br />

can be challenging to study rates of fractures because of the<br />

large number of patients and the long duration of follow-up<br />

needed. Thankfully, it is very likely that in the future of “Big<br />

Data” and the ASCO program CancerLinQ, knowledge of the<br />

bone health of every patient will provide answers to fracturerelated<br />

and other questions. There is reason to be optimistic<br />

that CancerLinQ and future research will reveal patterns of<br />

events and patterns of care that will inform future guidelines<br />

to improve bone outcomes.<br />

Disclosure of Potential Conflicts of Interest<br />

Relationships are considered self-held and compensated unless otherwise noted. Relationships marked “L” indicate leadership positions. Relationships marked “I” are those held by an immediate<br />

family member; those marked “B” are held by the author and an immediate family member. Institutional relationships are marked “Inst.” Relationships marked “U” are uncompensated.<br />

Employment: None. Leadership Position: None. Stock or Other Ownership Interests: None. Honoraria: None. Consulting or Advisory Role: None.<br />

Speakers’ Bureau: None. Research Funding: Catherine H. Van Poznak, Amgen (Inst), Novartis (Inst). Patents, Royalties, or Other Intellectual Property:<br />

Catherine H. Van Poznak, UpToDate. Expert Testimony: None. Travel, Accommodations, Expenses: None. Other Relationships: None.<br />

References<br />

1. American Cancer Society. http://www.cancer.org/cancer/breastcancer/<br />

detailedguide/breast-cancer-key-statistics. Accessed February 04, 2015.<br />

2. American Cancer Society http://www.cancer.org/cancer/prostatecancer/<br />

detailedguide/prostate-cancer-key-statistics. Accessed February 04, 2015.<br />

3. Cosman F, de Beur SJ, LeBoff MS, et al. Clinician’s guide to prevention<br />

and treatment of osteoporosis. Osteoporos Int. 2014;25:2359-2381.<br />

4. National Institute of Health, National Institute of Arthritis and Musculoskeletal<br />

and Skin Diseases. http://www.niams.nih.gov/health_info/<br />

bone/osteoporosis/overview.asp. Accessed February 04, 2015.<br />

5. World Health Organization. http://www.iofbonehealth.org/sites/<br />

default/fıles/WHO_Technical_Report-2007.pdf. Accessed February<br />

04, 2015.<br />

6. Siris ES, Adler R, Bilezikian J, et al. The clinical diagnosis of osteoporosis:<br />

a position statement from the National Bone Health Alliance Working<br />

Group. Osteoporos Int. 2014;25:1439-1443.<br />

7. Raisz LG. Clinical practice. Screening for osteoporosis N Engl J Med.<br />

2005;353:164-171.<br />

8. National Institutes of Health. http://www.nlm.nih.gov/medlineplus/<br />

osteoporosis.html. Accessed February 04, 2015.<br />

9. Centers for Disease Control and Prevention. http://www.cdc.gov/nchs/<br />

fastats/osteoporosis.htm. Accessed February 04, 2015.<br />

10. U.S. Department of Health and Human Services Agency for Healthcare<br />

Research and Quality. http://effectivehealthcare.ahrq.gov/index.cfm/<br />

search-for-guides-reviews-and-reports/?pageactiondisplayproduct&<br />

productid1049&PCTOLAND. Accessed February 04, 2015.<br />

11. National Osteoporosis Foundation. http://nof.org. Accessed February<br />

04, 2015.<br />

12. Riggs BL, Khosla S, Melton LJ 3rd. Sex steroids and the construction and<br />

conservation of the adult skeleton. Endocr Rev. 2002;23:279-302.<br />

13. Offıce of the Surgeon General (US). Bone health and osteoporosis: a<br />

report of the Surgeon General. Rockville, MD 2004. http://www.ncbi.<br />

nlm.nih.gov/books/NBK45513. Accessed February 04, 2015.<br />

14. Eastell R. Management of osteoporosis due to ovarian failure. . Med Pediatr<br />

Oncol. 2003;41:222-227.<br />

15. Love RR, Mazess RB, Barden HS, et al. Effects of tamoxifen on bone<br />

mineral density in postmenopausal women with breast cancer. N Engl<br />

J Med. 1992;326:852-856.<br />

16. Eriksson S, Eriksson A, Stege R, et al. Bone mineral density in patients<br />

with prostatic cancer treated with orchidectomy and with estrogens.<br />

Calcif Tissue Int. 1995;57:97-99.<br />

17. Lipton A, Smith MR, Ellis GK, et al. Treatment-induced bone loss and<br />

fractures in cancer patients undergoing hormone ablation therapy: effıcacy<br />

and safety of denosumab. Clin Med Insights Oncol. 2012;6: 287-<br />

299.<br />

18. Early Breast Cancer Trialists’ Collaborative Group (EBCTCG). Effects<br />

of chemotherapy and hormonal therapy for early breast cancer on<br />

recurrence and 15-year survival: an overview of the randomised trials.<br />

Lancet. 2005;365:1687-1717.<br />

19. Burstein HJ, Prestrud AA, Seidenfeld J, et al. American Society of Clinical<br />

Oncology clinical practice guideline: update on adjuvant endocrine<br />

therapy for women with hormone receptor-positive breast cancer. J Clin<br />

Oncol. 2010;28:3784-3796.<br />

20. Love RR, Barden HS, Mazess RB, et al. Effect of tamoxifen on lumbar<br />

spine bone mineral density in postmenopausal women after 5 years.<br />

Arch Intern Med. 1994;154:2585-2588.<br />

21. Davies C, Pan H, Godwin J, et al. Long-term effects of continuing adjuvant<br />

tamoxifen to 10 years versus stopping at 5 years after diagnosis of<br />

oestrogen receptor-positive breast cancer: ATLAS, a randomised trial.<br />

Lancet. 2013;381:805-816.<br />

22. Vehmanen L, Elomaa I, Blomqvist C, et al. Tamoxifen treatment after<br />

adjuvant chemotherapy has opposite effects on bone mineral density in<br />

asco.org/edbook | 2015 ASCO EDUCATIONAL BOOK<br />

e573

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