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- W343303420 abstract "Abstract Prognosis of B-cell chronic lymphocytic leukemia (CLL) is based on clinical staging whose limitation is the failure to assess whether the disease will progress or remain stable in early stage (Binet A, or Rai 0, I, II) patients. We previously reported that soluble CD23 (sCD23), a protein derived from the B-cell membrane CD23 Ag, is selectively elevated in the serum of CLL patients. This prospective study assessed the predictive value of serum sCD23 level measured at study entry on the overall survival of all CLL patients and on disease progression of stage Binet A patients. Prognostic value of repeated measurements of sCD23 over time in stage A patients was also analyzed. One hundred fifty-three CLL patients were prospectively followed with a median follow-up of 78 months. Eight clinical or biological parameters were collected from the date of the first sCD23 measurement. At study entry, by Cox model, Binet staging (P = .0001) and serum sCD23 level (P = .03) appeared as prognostic factors for survival. Patients with sCD23 level above median value (> 574 U/mL) had a significantly worse prognosis than those with lower values (median survival of 53 v 100+ months, P = .0001). During follow-up, sCD23 doubling time increased by 3.2 the risk of death (P = .001). Among stage A patients (n = 100), sCD23 determination at study entry was the sole variable predictive of disease progression, patients with sCD23 level above 574 U/mL had a median time progression of 42 months versus 88 months for those with lower levels (P = .0001). Stage A patients who doubled their sCD23 level exhibited a 15-fold increased risk of progression (P = .0001) and, in addition, the sCD23 increase preceded by 48 months disease progression. We conclude that in CLL patients, serum sCD23 level provides significant additional prognostic information in terms of overall survival. Most interestingly, among early stage patients, sCD23 determination at diagnosis and during the course of the disease may help to the early identification of patients who will rapidly progress to upper stages." @default.
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- W343303420 date "1996-12-01" @default.
- W343303420 modified "2023-10-17" @default.
- W343303420 title "Prognostic importance of serum soluble CD23 level in chronic lymphocytic leukemia" @default.
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- W343303420 doi "https://doi.org/10.1182/blood.v88.11.4259.4259" @default.
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