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letter to the editor - Annals of Oncology

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<strong>letter</strong> <strong>to</strong> <strong>the</strong> edi<strong>to</strong>r<br />

respect <strong>to</strong> long-term data <strong>to</strong> learn all <strong>the</strong> details with respect <strong>to</strong><br />

effectiveness. I do not, however, concur with <strong>the</strong>ir negative and<br />

unsubstantiated statement claiming this analysis fails with<br />

respect <strong>to</strong> assumptions and interpretation <strong>of</strong> results.<br />

E. Lonning*<br />

Institute <strong>of</strong> Medicine Haukeland University Hospital, Department <strong>of</strong><br />

<strong>Oncology</strong>, Bergen, Norway<br />

(*E-mail: per.lonning@helse-bergen.no)<br />

references<br />

1. Delea TE, Karnon J, Goss PE. Conclusions regarding relative cost-utility <strong>of</strong><br />

alternative strategies for use <strong>of</strong> aromatase inhibi<strong>to</strong>rs in postmenopausal women with<br />

early breast cancer are premature. Ann Oncol; doi:10.1093/annonc/mdl171.<br />

2. Lønning PE. Comparing cost/utility <strong>of</strong> giving an aromatase inhibi<strong>to</strong>r as<br />

mono<strong>the</strong>rapy for 5 years versus sequential administration following 2–3 or 5<br />

years <strong>of</strong> tamoxifen as adjuvant treatment for postmenopausal breast cancer. Ann<br />

Oncol 2006; 17: 217–225.<br />

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(Femara) and anastrozole (Arimidex) on <strong>to</strong>tal body aromatization and plasma<br />

estrogen levels in postmenopausal breast cancer patients evaluated in<br />

a randomized, cross-over-designed study. J Clin Oncol 2002; 20: 751–757.<br />

4. Johannessen DC, Engan T, Salle ED et al. Endocrine and clinical effects <strong>of</strong><br />

exemestane (PNU 155971), a novel steroidal aromatase inhibi<strong>to</strong>r, in<br />

postmenopausal breast cancer patients: a phase I study. Clin Cancer Res 1997;<br />

3: 1101–1108.<br />

2 | <strong>letter</strong> <strong>to</strong> <strong>the</strong> edi<strong>to</strong>r<br />

5. Lønning PE, Bajetta E, Murray R et al. Activity <strong>of</strong> exemestane in metastatic breast<br />

cancer after failure <strong>of</strong> nonsteroidal aromatase inhibi<strong>to</strong>rs: a phase II trial. J Clin<br />

Oncol 2000; 18: 2234–2244.<br />

6. Powles TJ, Hickish T, Kanis JA, Tidy A, Ashley S. Effect <strong>of</strong> tamoxifen on<br />

bone mineral density measured by dual-energy X-ray absorptiometry in<br />

healthy premenopausal and postmenopausal women. J Clin Oncol 1996;<br />

14: 78–84.<br />

7. Perez EA, Josse RG, Pritchard KI et al. Effect <strong>of</strong> letrozole versus placebo on<br />

bone mineral density in women completing >5 years (yrs) <strong>of</strong> adjuvant<br />

tamoxifen: ncic ctg ma.17b. Breast Cancer Res Treat 2004; 88 (Suppl 1):<br />

Abstr 404, s36.<br />

8. Lønning PE, Geisler J, Krag LE et al. Effects <strong>of</strong> exemestane administered for 2<br />

years versus placebo on bone mineral density, bone biomarkers, and plasma<br />

lipids in patients with surgically resected early breast cancer. J Clin Oncol 2005;<br />

23: 5126–5137.<br />

9. Geisler J, Lønning PE. Aromatase inhibi<strong>to</strong>rs as adjuvant treatment <strong>of</strong> breast<br />

cancer. Crit Rev Oncol Hema<strong>to</strong>l 2006; 57: 53–61.<br />

10. Group EBCTC. Effects <strong>of</strong> chemo<strong>the</strong>rapy and hormonal <strong>the</strong>rapy for early breast<br />

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

Lancet 2005; 365: 1687–1717.<br />

11. Nordenskjold B, Rosell J, Rutqvist LE et al. Coronary heart disease mortality after<br />

5 years <strong>of</strong> adjuvant tamoxifen <strong>the</strong>rapy: Results from a randomized trial. Journal <strong>of</strong><br />

<strong>the</strong> National Cancer Institute 2005; 97: 1609–1610.<br />

12. Anderson GL, Limacher M, Assaf AR et al. Effects <strong>of</strong> conjugated, equine<br />

estrogen in postmenopausal women with hysterec<strong>to</strong>my. The women’s<br />

health initiative randomized controlled trial. JAMA 2004; 291:<br />

1701–1712.<br />

doi:10.1093/annonc/mdl170<br />

<strong>Annals</strong> <strong>of</strong> <strong>Oncology</strong><br />

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