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2012 EDUCATIONAL BOOK - American Society of Clinical Oncology

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vanced solid tumors, even if they are untreated, will continue<br />

to result in only incremental improvements. Newly<br />

diagnosed metastatic disease is already genetically complex<br />

and likely analogous to newly diagnosed CML blastic phase,<br />

and not to newly diagnosed chronic phase CML. Timing may<br />

therefore be a crucial missing component in the optimal<br />

application <strong>of</strong> targeted therapies to solid tumors. The les-<br />

Authors’ Disclosures <strong>of</strong> Potential Conflicts <strong>of</strong> Interest<br />

Author<br />

Employment or<br />

Leadership<br />

Positions<br />

Consultant or<br />

Advisory Role<br />

sons <strong>of</strong> CML suggest that once a targeted therapy has shown<br />

some activity in advanced disease, it may have the potential<br />

for a high rates <strong>of</strong> functional cures but only if given at the<br />

time <strong>of</strong> diagnosis <strong>of</strong> early stage disease. The current strategy<br />

<strong>of</strong> using targeted therapy for patients with metastatic solid<br />

tumors may therefore underestimate, perhaps dramatically,<br />

the ultimate effectiveness <strong>of</strong> active targeted agents.<br />

Stock<br />

Ownership Honoraria<br />

Research<br />

Funding<br />

Jason R. Westin*<br />

Hagop Kantarjian Novartis Bristol-Myers<br />

Squibb; Cyclacel;<br />

Genzyme;<br />

Novartis; Pfizer<br />

Razelle Kurzrock AstraZeneca;<br />

Health<br />

Advances;<br />

Johnson &<br />

Johnson; Merck;<br />

SAIC-Frederick<br />

*No relevant relationships to disclose.<br />

1. Lemonick MD, Park A. New hope for cancer. TIME. May, 28, 2001.<br />

2. Kurzrock R, Gutterman JU, Talpaz M. The molecular genetics <strong>of</strong><br />

Philadelphia chromosome-positive leukemias. N Engl J Med. 1988 Oct<br />

13;319:990-998.<br />

3. Deininger M, O’Brien, SG, Guilhot F, et al. International randomized<br />

study <strong>of</strong> interferon vs STI571 (IRIS) 8-year follow up: sustained survival and<br />

low risk for progression or events in patients with newly diagnosed chronic<br />

myeloid leukemia in chronic phase (CML-CP) treated with imatinib. Blood.<br />

2009;114:22 (suppl; abstr 1126).<br />

4. Druker BJ, Guilhot F, O’Brien SG, et al. Five-year follow-up <strong>of</strong> patients<br />

receiving imatinib for chronic myeloid leukemia. N Engl J Med. 2006;355:<br />

2408-2417.<br />

5. Kantarjian HM, Talpaz M, O’Brien S, et al. Survival benefit with<br />

imatinib mesylate versus interferon-alpha-based regimens in newly diagnosed<br />

chronic-phase chronic myelogenous leukemia. Blood. 2006;108:1835-<br />

1840.<br />

6. Björkholm M, Ohm L, Eloranta S, et al. Success story <strong>of</strong> targeted therapy<br />

in chronic myeloid leukemia: a population-based study <strong>of</strong> patients diagnosed<br />

in Sweden from 1973 to 2008. J Clin Oncol. 2011;29:2514-2520.<br />

7. Kantarjian H, O’Brien S, Jabbour E. Improved survival in chronic<br />

myeloid leukemia since the introduction <strong>of</strong> imatinib therapy: a singleinstitution<br />

historical experience. Blood. <strong>2012</strong>;119:1981-1987.<br />

8. Kantarjian HM, Cortes J, O’Brien S, et al. Imatinib mesylate (STI571)<br />

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in blast phase. Blood. 2002;99:3547-3553.<br />

9. Cortes J, Kim DW, Raffoux E, et al. Efficacy and safety <strong>of</strong> dasatinib in<br />

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10. Giles FJ, Kantarjian HM, le Coutre PD, et al. Nilotinib is effective in<br />

imatinib-resistant or -intolerant patients with chronic myeloid leukemia in<br />

blastic phase. Leukemia. Epub 2011 Dec 13.<br />

11. Sawyers CL, Hochhaus A, Feldman E, et al. Imatinib induces hematologic<br />

and cytogenetic responses in patients with chronic myelogenous leukemia<br />

in myeloid blast crisis: results <strong>of</strong> a phase II study. Blood. 2002;99:3530-<br />

3539.<br />

12. Talpaz M, Silver RT, Druker BJ, et al. Imatinib induces durable<br />

hematologic and cytogenetic responses in patients with accelerated phase<br />

184<br />

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