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2012 EDUCATIONAL BOOK - American Society of Clinical Oncology

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PREDICTIVE PARAMETERS IN CLL<br />

patients did not have active CLL requiring initiation <strong>of</strong><br />

treatment within 3 months <strong>of</strong> first visit and were observed<br />

for time to first treatment. The results from this study<br />

showed a mix <strong>of</strong> both types <strong>of</strong> prognostic parameters were<br />

found to be independently associated with a shorter time to<br />

first therapy. These parameters included: three involved<br />

lymph node sites, increased size <strong>of</strong> cervical lymph nodes,<br />

presence <strong>of</strong> del(17p13) or del(11q22) increased serum lactate<br />

dehydrogenase, and unmutated IgVH mutation status.<br />

From a subset <strong>of</strong> patients a multivariable model was constructed<br />

and a nomogram was developed using the latter<br />

prognostics to predict the risk <strong>of</strong> time to first treatment. The<br />

authors make the point that this nomogram model system<br />

was constructed from only patients with early-stage CLL<br />

and where they had very prolonged clinical follow-up using<br />

strict criteria to decide on treatment initiation.<br />

The same group <strong>of</strong> investigators has also attempted to<br />

develop prognostic features to better predict response to first<br />

therapy and subsequent clinical course. Rationale for this<br />

is that responses to upfront therapy can be very heterogeneous.<br />

Knowledge <strong>of</strong> critical patient features that are<br />

strongly associated with clinical courses post–therapy will<br />

again aid in counseling and even in performing relevant<br />

clinical trials. For 595 patients who underwent upfront<br />

therapy, researchers looked for predictors <strong>of</strong> three aspects:<br />

complete response, time to treatment failure, and OS. 29 In<br />

patients who achieved a complete response there was a more<br />

favorable durability and survival, but having received combination<br />

chemotherapy with antibody regimen was very<br />

significant for all three clinical outcomes. The use <strong>of</strong> various<br />

clinical parameters (i.e., age, serum beta-2 microglobulin)<br />

generated two nomograms that could be used to predict 5and<br />

10-year OS.<br />

Author’s Disclosure <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 />

Finally there was a very recent and quite large study <strong>of</strong><br />

1,154 patients with Binet stage A CLL recently reported<br />

that studied both traditional and novel prognostic factors in<br />

association with clinical outcome. 30 This study found that<br />

LDT was most significantly associated with time to first<br />

therapy but that IgVH was strongest in association with OS.<br />

In addition only LDT, mutation status, CD38, and age at<br />

diagnosis were independent prognostic variables for time to<br />

first therapy and OS. Their recommendation was to assess<br />

IgVH mutation status and CD38 expression at initial evaluation<br />

as they have independent prognostic value in earlystage<br />

CLL.<br />

Conclusion<br />

The use <strong>of</strong> both traditional and novel prognostic parameters<br />

can be a very valuable ally in determining the relative<br />

risk <strong>of</strong> the individual patient’s clinical course <strong>of</strong> CLL. There<br />

are multiple parameters other than individual prognostic<br />

factors that can be used at initial prognostic evaluation and<br />

can inform the practitioner about disease progression risk<br />

and time to therapy. However, the routine use <strong>of</strong> these<br />

parameters, either in single use or in models, is not absolutely<br />

mandated in the care <strong>of</strong> the patients with CLL. In<br />

addition, prognostic parameters should include the recognition<br />

<strong>of</strong> other influences on the course <strong>of</strong> all patients with<br />

CLL, such as advanced age and poor biologic fitness (defined<br />

as impaired physical fitness and organ function), which<br />

considerably increase the risk for adverse consequences <strong>of</strong><br />

progressive disease and contribute to the decreased survival<br />

for patients with CLL compared with the age-matched<br />

population.<br />

Stock<br />

Ownership Honoraria<br />

Research<br />

Funding<br />

Neil E. Kay Genentech;<br />

Hospira<br />

1. Jemal A, Siegel R, Ward E, et al. Cancer statistics, 2008. CA Cancer<br />

J Clin. 2008;58(2):71-96. Epub 2008 Feb 20.<br />

2. Dighiero G, Maloum K, Desablens B, et al. Chlorambucil in indolent<br />

chronic lymphocytic leukemia. French Cooperative Group on Chronic Lymphocytic<br />

Leukemia. N Engl J Med. 1998;338(21):1506-1514.<br />

3. Shanafelt TD, Bowen D, Venkat C, et al. Quality <strong>of</strong> life in chronic<br />

lymphocytic leukemia: An international survey <strong>of</strong> 1482 patients. Br J Haematol.<br />

2007;139(2):255-264.<br />

4. Shanafelt TD, Bowen DA, Venkat C, et al. The physician-patient<br />

relationship and quality <strong>of</strong> life: Lessons from chronic lymphocytic leukemia.<br />

Leuk Res. 2009;33(2):263-270. Epub 2008 Jul 25.<br />

5. Rozman C, Bosch F, Montserrat E. Chronic lymphocytic leukemia: A<br />

changing natural history? Leukemia. 1997;11(6):775-778.<br />

6. Zent CS, Kay NE. Management <strong>of</strong> patients with chronic lymphocytic<br />

leukemia with a high risk <strong>of</strong> adverse outcome: The Mayo Clinic approach.<br />

Leuk Lymphoma. 2011;52(8):1425-1434. Epub 2011 Jun 8.<br />

7. Shanafelt TD, Rabe KG, Kay NE, et al. Age at diagnosis and the utility<br />

<strong>of</strong> prognostic testing in patients with chronic lymphocytic leukemia. Cancer.<br />

2010;116(20):4777-4787.<br />

8. Molica S, Alberti A. Prognostic value <strong>of</strong> the lymphocyte doubling time in<br />

chronic lymphocytic leukemia. Cancer. 1987;60(11):2712-2716.<br />

9. Bergmann MA, Eichhorst BF, Busch R, et al. Prospective Evaluation <strong>of</strong><br />

Prognostic Parameters in Early Stage Chronic Lymphocytic Leukemia (CLL):<br />

REFERENCES<br />

Expert<br />

Testimony<br />

Other<br />

Remuneration<br />

Results <strong>of</strong> the CLL1-Protocol <strong>of</strong> the German CLL Study Group (GCLLSG).<br />

ASH Annual Meeting Abstracts. 2007;110(11):625.<br />

10. Wierda WG, O’Brien S, Wang X, et al. Prognostic nomogram and index<br />

for overall survival in previously untreated patients with chronic lymphocytic<br />

leukemia. Blood. 2007;109(11):4679-4685. Epub 2007 Feb 13.<br />

11. Damle RN, Wasil T, Fais F, et al. Ig V gene mutation status and CD38<br />

expression as novel prognostic indicators in chronic lymphocytic leukemia.<br />

Blood. 1999;94(6):1840-1847.<br />

12. Hamblin TJ, Davis Z, Gardiner A, et al. Unmutated Ig V(H) genes are<br />

associated with a more aggressive form <strong>of</strong> chronic lymphocytic leukemia.<br />

Blood. 1999;94(6):1848-1854.<br />

13. Hamblin TJ, Orchard JA, Ibbotson RE, et al. CD38 expression and<br />

immunoglobulin variable region mutations are independent prognostic variables<br />

in chronic lymphocytic leukemia, but CD38 expression may vary during<br />

the course <strong>of</strong> the disease. Blood. 2002;99(3):1023-1029.<br />

14. Dohner H, Stilgenbauer S, Benner A, et al. Genomic aberrations and<br />

survival in chronic lymphocytic leukemia. N Engl J Med. 2000;343(26):1910-<br />

1916. Epub 2008 Mar 26.<br />

15. Krober A, Seiler T, Benner A, et al. V(H) mutation status, CD38<br />

expression level, genomic aberrations, and survival in chronic lymphocytic<br />

leukemia. Blood. 2002;100(4):1410-1416.<br />

16. Crespo M, Bosch F, Villamor N, et al. ZAP-70 expression as a surrogate<br />

for immunoglobulin-variable-region mutations in chronic lymphocytic leukemia.<br />

N Engl J Med. 2003;348(18):1764-1775.<br />

397

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