INTRODUCTION
Multiple myeloma, tumor, MM
MULTIPLE MYELOMA, MULTIPLE MYELOMA, TUMOR
Multiple myeloma (MM), which is the second most common hematological tumor with the mean annual age‐adjusted incidence of around six per 100,000 per year in the European and American areas,Recently, regulatory B cells (Bregs) have been proven to be involved in immune defects by exerting immune regulatory functions.Aiming to provide more evidence‐based practice for elderly patients with MM, the study established and assessed a stratified therapeutic model with studies on Bregs for Chinese Elderly Multiple Myeloma in 2021 (CEMM2021). First, the CEMM2021 model designed personal total therapy plans for the elder newly diagnosed MM (NDMM) at a referral 