Multiple myeloma staging

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Editor-In-Chief: C. Michael Gibson, M.S., M.D. [1]

Overview

International Staging System for multiple myeloma, based on β2-microglobulin (β2M) levels and serum albumin levels, was published by International Myeloma Working Group in 2003 and is the most widely used staging system. It is used for both guiding treatment as well as predicting prognosis.

Staging

International Staging System

According to the International Staging System (ISS), there are three stages of multiple myeloma based on both β2-microglobulin and Albumin levels.[1][2]:

Stage Features Prognosis
Stage 1
  • Median survival of 62 months
Stage 2
  • β2-microglobulin <3.5 and Albumin <3.5

or

  • β2-microglobulin 3.5-5.5
  • Median survival 45 months
Stage 3
  • β2-microglobulin >5.5
  • Median survival 29 months


Durie-Salmon staging system

According to the Durie-Salmon Staging System, there are three stages of multiple myeloma based on the hemoglobin level, calcium level, skeletal survey, serum parapprotein level, and urinary light chain excretion.[3] First published in 1975, the Durie-Salmon staging system (Durie BG, Salmon SE) is a clinical staging system for multiple myeloma that correlates measured myeloma cell mass with the presenting clinical features, response to treatment, and survival.</ref> Durie-Salmon Staging System is still in use, but has largely been superseded by the simpler ISS.[4]

Stage Hemoglobin level Calcium level Skeletal survey Serum paraprotein level Urinary light chain excretion
Stage 1
  • > 10g/dL
  • 8.5-10.2 mg/dL
  • Normal or single plasmacytoma or osteoporosis
  • < 5 g/dL if IgG or < 3 g/dL if IgA
  • < 4 g/24h
Stage 2
  • 8.5-10g/dL
  • 10.2-12 mg/dL
  • fulfilling the criteria of neither 1 nor 3
  • 5-7 g/dL if IgG or 3-5 g/dL if IgA
  • 4-12 g/24h
Stage 3
  • < 8.5g/dL
  • > 12mg/dL
  • 3 or more lytic bone lesions
  • >7g/dL if IgG or > 5 g/dL if IgA
  • > 12g/24h

Stages 1, 2 and 3 of the Durie-Salmon staging system can be divided into A or B depending on serum creatinine:

  • A: serum creatinine < 2mg/dL (< 177 umol/L)
  • B: serum creatinine > 2mg/dL (> 177 umol/L)

References

  1. Greipp PR, San Miguel J, Fonseca R, Avet-Loiseau H, Jacobson JL, Rasmussen E, Crowley J, Durie BMG. Development of an international prognostic index (IPI) for myeloma: report of the international myeloma working group. Hematology Journal 2003;4:S42. NLM ID 100965523.
  2. About multiple myeloma. University of California San Francisco (2015)http://cancer.ucsf.edu/research/multiple-myeloma/ Accessed on September, 18 2015
  3. About multiple myeloma. University of California San Francisco (2015)http://cancer.ucsf.edu/research/multiple-myeloma/ Accessed on September, 18 2015
  4. About multiple myeloma. University of California San Francisco (2015)http://cancer.ucsf.edu/research/multiple-myeloma/ Accessed on September, 18 2015


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