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280  /  Chapter 21  Multiple myeloma and related disorders




                                                    Diagnosis of multiple myeloma


                                          Asymptomatic                    Symptomatic
                                           – observe                    C – elevated calcium
                                                                        R – renal dysfunction
                                                                        A – anaemia
                                                                        B – bone disease



                                                     Suitable for intensive   Not suitable for
                                                       chemotherapy?       intensive
                                                       – age < 70 years  chemotherapy?
                                                                         – age > 70 years
                                                                         – co-morbidity


                                     Consider allograft  Several courses of  Chemotherapy with
                                       – especially   chemotherapy then  melphalan
                                       if < 50 years   autologous stem  ± prednisolone
                                                      cell transplantation  ± thalidomide or
                                                          (ASCT)        lenalidomide or
                                                                        bortezomib



                                                            Plateau (stable paraprotein)
                                                          Stop treatment
                                                          Consider maintenance thalidomide
                                                          or lenalidomide


                                                           Relapse (increasing paraprotein)



                                                      Another ASCT?     Further
                                                      Chemotherapy      chemotherapy
                                                      – thalidomide or  – cyclophosphamide
                                                       lenalidomide     – thalidomide or
                                                      – bortezomib?        lenalidomide
                                                      – non-cross reactive  – bortezomib
                                                         chemotherapy?



                              Figure 21.8   Algorithm of potential approaches to the management of multiple myeloma.




                    assessed as first - line therapy. It is associated with   in the treatment of myeloma. Already proven in

                    myelosuppression and increased risk of thrombosis,   refractory disease, it is now being assessed in earlier
                    but causes less neuropathy than thalidomide (Table   phases of treatment. Its main side - eff ect  is
                     21.3 ).  Pomalidomide  is the most recent addition to   neuropathy.

                    this class of drugs.                           Radiotherapy  is highly effective in treating the
                                         ®
                         Bortezomib  (Velcade   ) inhibits the cellular pro-  symptoms of myeloma. It may be used for areas of
                    teasome and NF -  κ B activation and is very valuable   bone pain or spinal cord compression.
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