Plasma cell labeling index and β2-microglobulin predict survival independent of thymidine kinase and C-reactive protein in multiple myeloma

Philip R. Greipp, John A. Lust, W. Michael O'Fallon, Jerry A. Katzmann, Thomas Elmer Witzig, Robert A. Kyle

Research output: Contribution to journalArticle

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Abstract

The plasma cell labeling index (PCLI) and serum β2-micro-globulin (β2M) are independent prognostic factors in multiple myeloma (MM). Recently, levels of thymidine kinase (TK) and C-reactive protein (CRP) have been shown to have prognostic value. We studied 107 patients with newly diagnosed myeloma to determine whether TK and CRP values added prognostic information not already available using the PCLI and β2M. Univariate survival analysis showed prognostic significance for the PCLI, TK, β2M, age, serum albumin, and CRP. Multivariate analysis showed that only PCLI and β2M have independent prognostic significance. The survival curves were better separated using the PCLI and β2M than with other combinations of variables. Among nine patients under age 65 with low PCLI and low β2M, eight were alive almost 6 years after starting chemotherapy. These good-risk patients could not be identified by standard clinical features. Although creatinine and calcium were normal, other features such as bone lesions, osteoporosis, fracture, and anemia were present and stage distribution was similar to other patients in the study. In conclusion, PCLI and β2M measured at diagnosis are independent prognostic factors. They must be considered when interpreting the results of clinical trials and should be helpful in counseling patients and in designing new trials. When the PCLI and β2M values are known, the TK and CRP values do not add useful additional prognostic information.

Original languageEnglish (US)
Pages (from-to)3382-3387
Number of pages6
JournalBlood
Volume81
Issue number12
StatePublished - Jun 15 1993

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Thymidine Kinase
Globulins
Plasma Cells
Multiple Myeloma
C-Reactive Protein
Labeling
Plasmas
Survival
Chemotherapy
Survival Analysis
Serum Albumin
Osteoporosis
Counseling
Anemia
Creatinine
Bone
Multivariate Analysis
Clinical Trials
Calcium
Bone and Bones

ASJC Scopus subject areas

  • Hematology

Cite this

Greipp, P. R., Lust, J. A., O'Fallon, W. M., Katzmann, J. A., Witzig, T. E., & Kyle, R. A. (1993). Plasma cell labeling index and β2-microglobulin predict survival independent of thymidine kinase and C-reactive protein in multiple myeloma. Blood, 81(12), 3382-3387.

Plasma cell labeling index and β2-microglobulin predict survival independent of thymidine kinase and C-reactive protein in multiple myeloma. / Greipp, Philip R.; Lust, John A.; O'Fallon, W. Michael; Katzmann, Jerry A.; Witzig, Thomas Elmer; Kyle, Robert A.

In: Blood, Vol. 81, No. 12, 15.06.1993, p. 3382-3387.

Research output: Contribution to journalArticle

Greipp, Philip R. ; Lust, John A. ; O'Fallon, W. Michael ; Katzmann, Jerry A. ; Witzig, Thomas Elmer ; Kyle, Robert A. / Plasma cell labeling index and β2-microglobulin predict survival independent of thymidine kinase and C-reactive protein in multiple myeloma. In: Blood. 1993 ; Vol. 81, No. 12. pp. 3382-3387.
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