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Updated: Jan 29, 2026

An Organotypic High Throughput System for Characterization of Drug Sensitivity of Primary Multiple Myeloma Cells
Published on: July 15, 2015
[Clinical Application of R-ISS Staging System in 412 Newly Diagnosed Patients with Multiple Myeloma]
Hai-Min Chen1, Wei Wei1, Rong Peng1
1Department of Hematology, Zhabei Branch of Changzheng Hospital, The Second Military Medical University, Shanghai 200070, China.
Objective:
To evaluate the prognostic value of R-ISS staging system in patients with newly diagnosed multiple myeloma (NDMM).
Methods:
The Chinical data of 412 patients with NDMM in our hospital from May 2010 to May 2016 were retrospectively analyzed. All the patients received conventional chemotherapy or thalidomide or bortezomib-based chemotherapy. All the patients with NDMM were divided into R-ISS-Ⅰ, R-ISS-Ⅱ and R-ISS-Ⅲ groups according to R-ISS staging system on the basis of ISS staging system, cytogenetics and LDH level. The progression-free survival (PFS) time and overall survival(OS) of different groups were compared.
Results:
Among all 412 patients, 76 were rated as R-ISS-Ⅰ, 259 as R-ISS-Ⅱ and 77 as R-ISS-Ⅲ. The median PFS time in 3 groups were 44, 25 and 14 months respectively (P<0.01). The median OS time of the 3 groups were not reached 54 and 25 months respectively (P<0.01). Further analysis also found that statistically different survival associated with different R-ISS groups in the conventional chemotherapy group (P<0.05), bortezomib-based chemotherapy group (P<0.01), thalidomide-based chemotherapy group (P<0.01), transplantation group (P<0.05), different-age stratified group (≤65y P<0.01, 66-75y P<0.01,≥76y P<0.01), damaged renal function group (P<0.01) and extramedullary infiltration group (P<0.01).
Conclusion:
PFS and OS in the patients with multiple myeloma were different among three distrinct R-ISS stages. The R-ISS staging system has important clinical significance for the prognosis evaluation of multiple myeloma.
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