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Prepublished online as a Blood First Edition Paper on May 8, 2003; DOI 10.1182/blood-2002-10-3264.
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Blood, 1 September 2003, Vol. 102, No. 5, pp. 1622-1625
CLINICAL OBSERVATIONS, INTERVENTIONS, AND THERAPEUTIC
TRIALS Brief report
Contribution of -2 microglobulin levels to the prognostic stratification of survival in patients with myelodysplastic syndrome (MDS)
Simona Gatto,
Greg Ball,
Francesco Onida,
Hagop M. Kantarjian,
Elihu H. Estey, and
Miloslav Beran
From the Department of Leukemia, University of Texas M. D. Anderson
Cancer Center, Houston; and the Center for Professional Excellence, The
Methodist Hospital, Houston, TX.
Prospective analysis of the importance of the plasma levels of -2
microglobulin (B2M) in 553 patients with myelodysplastic syndrome (MDS) found
that B2M is an independent prognostic variable for survival with weighted
significance second only to the karyotype. The incorporation of the B2M
covariate into risk assessment of MDS patients added significantly to the
power of the IPSS to stratify MDS patients into risk categories. Our results
further document that the 2 objectively measured covariates that display the
highest power to predict survival, that is, karyotype and B2M, can alone be
used for risk stratification. While the results must be verified in an
independent and comparable population, our data strongly recommend routine
measurement of B2M in patients with MDS.

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