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Blood, 15 April 2008, Vol. 111, No. 8, pp. 4039-4047.
Prepublished online as a Blood First Edition Paper on February 11, 2008; DOI 10.1182/blood-2007-03-081018.
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Submitted March 21, 2007
Accepted January 14, 2008
Myeloma in patients under age 50 presents with more favorable features and shows better survival: an analysis of 10,549 patients from the International Myeloma Working Group
Heinz Ludwig*, Brian G.M. Durie, Vanessa Bolejack, Ingemar Turesson, Robert A. Kyle, Joan Blade, Rafael Fonseca, Meletios Dimopoulos, Kazuyuki Shimizu, Jesus San Miguel, Jan Westin, Jean-Luc Harousseau, Meral Beksac, Mario Boccadoro, Antonio Palumbo, Bart Barlogie, Chaim Shustik, Michele Cavo, Douglas Joshua, Michel Attal, Pieter Sonneveld, and John Crowley
Department of Medicine I, Wilhelminenspital, Vienna, Austria
International Myeloma Foundation, Cedars Sinai Comprehensive Cancer Center, Los Angeles, CA, United States
Department of Biostatistical Analysis, Cancer Research and Biostatistics, Seattle, WA, United States
Department of Hematology, University Hospital, Malmo, Sweden
Division of Hematology, Mayo Clinic, Rochester, MN, United States
Hematology Department, Hospital Clinic IDIBAPS, Barcelona, Spain
Division of Hematology and Oncology, Mayo Clinic Comprehensive Cancer Center, Scottsdale, AZ, United States
Department of Clinical Therapeutics, University of Athens School of Medicine, Athens, Greece
Department of Medicine, Nagoya City Midori General Hospital, Nagoya, Japan
Department of Hematology, University Hospital of Salamanca, Salamanca, Spain
Department of Hematology, University Hospital Lund, Lund, Sweden
Division of Hematology, Centre Hospitalier Universitaire Hotel-Dieu, Nantes, France
Department of Microbiology and Clinical Microbiology, Ankara University School of Medicine, Ankara, Turkey
Divisione Universitaria di Ematologia, Ospedale Molinette, Torino, Italy
Myeloma Institute for Research and Therapy, University of Arkansas for Medical Sciences, Little Rock, AR, United States
Department of Medicine, McGill University, Montreal, Canada
Institute of Hematology and Medical Oncology 'Seragnoli', University of Bologna, Bologna, Italy
Institute of Haematology, Royal Prince Alfred Hospital, Sydney, Australia
Service d'Hematologie, Hopital Purpan, Toulouse, France
Department of Hematology, Erasmus MC, Rotterdam, Netherlands
* Corresponding author; email: heinz.ludwig{at}wienkav.at.
We analyzed the presenting features and survival in 1,689 patients with multiple myeloma aged <50 years compared to 8,860 patients 50 years of age. 7,765 of the total 10,549 patients received conventional and 2,784 high-dose therapy. Young patients were more frequently male, had more favorable features such as low ISS and D/S stage as well as less frequently adverse prognostic factors including high CRP, low hemoglobin, increased serum creatinine and poor performance status. Survival was significantly longer in young patients (median 5.2 years versus 3.7 years; P<.001) both after conventional (median: 4.5 years versus 3.3 years; P<.001) or high-dose therapy (median: 7.5 years versus 5.7 years; P=.04). Ten-year survival rate was 19% after conventional and 43% after high-dose therapy in young, and 8% and 29%, respectively, in older patients. Multivariate analysis revealed age as an independent risk factor during conventional therapy, but not after autologous transplantation. Five of the 10 independent risk factors identified for conventional therapy were also relevant for autologous transplantation. After adjusting for normal mortality, lower ISS stage and other favorable prognostic features seem to account for the significantly longer survival of young patients with multiple myeloma with age remaining a risk factor during conventional therapy.

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