Multicenter Observational Study for the Validation of the Predictive Role of Diffusion-Weighted Whole-body MRI (DW-MRI) Imaging Response According to MY-RADS Criteria (RAC Score) and Fat Fraction (rFF%) After Autologous Stem Cell Transplantation in Multiple Myeloma Patients Treated With First-Line Anti-CD38-Based Therapy (RAC-FAT Study)
试验速览
- 阶段
- 不适用
- 状态
- 尚未招募
- 发起方
- 入组人数
- 92
- 试验地点
- 10
- 主要终点
- Radiological Response Categories (RAC1 and RAC≥2)
研究概览
简要总结
This is a multicenter, observational, retrospective-prospective study designed to validate the predictive role of advanced imaging in patients with newly diagnosed multiple myeloma (NDMM). The main purpose of this study is to estimate the prevalence of radiological response categories (Response Assessment Category, RAC score) and evaluate the predictive value of relative Fat Fraction (rFF%) using Diffusion-Weighted Whole-Body Magnetic Resonance Imaging (DW-MRI) in patients who have undergone autologous stem cell transplantation (ASCT) after receiving first-line anti-CD38-based quadruplet induction therapy.
详细描述
The role of functional imaging in Multiple Myeloma (MM) has become essential for assessing treatment response. This study focuses on the Myeloma Response Assessment and Diagnosis System (MY-RADS) guidelines and the quantitative parameter of rFF% to identify "functional high-risk" patients who may experience early relapse despite achieving conventional deep responses.The study will involve two cohorts:Retrospective Cohort: Includes patients treated since January 1st, 2020, with available post-ASCT DW-MRI data performed during routine clinical practice.Prospective Cohort: Includes newly diagnosed patients enrolled after their standard-of-care ASCT and post-transplant DW-MRI assessment.Participants will not receive any investigational or trial-specific treatment. All diagnostic and therapeutic procedures follow the current standard of care. Data regarding clinical characteristics, treatment details (induction, ASCT, maintenance), DW-MRI parameters (RAC score, apparent diffusion coefficient [ADC], and rFF% values), and minimal residual disease (MRD) will be collected and recorded in an anonymized electronic Case Report Form (eCRF).The study aims to enroll a minimum of 92 participants to evaluate:Primary Endpoint: Prevalence of RAC1 and RAC≥2 categories post-ASCT.Secondary Endpoints: Progression-free survival (PFS) and Overall Survival (OS) stratified by RAC score and rFF%, and the concordance between imaging results and bone marrow MRD.
研究设计
- 研究类型
- Observational
- 观察模型
- Other
- 时间视角
- Other
入排标准
- 年龄范围
- 18 Years 至 —（Adult, Older Adult）
- 性别
- All
- 接受健康志愿者
- 否
入选标准
- •Newly diagnosed MM participants eligible for ASCT, treated with anti-CD38-based quadruplet induction therapy and ASCT, with post-ASCT/premaintenance DW-MRI available (in tandem ASCT, DW-MRI after second ASCT will be considered).
- •Age ≥18 years.
- •Participant must sign an informed consent form (ICF) that he or she understands the purpose of, and procedures required for the trial and is willing to participate in the trial.
排除标准
- •- Absence of post-ASCT/pre-maintenance DW-MRI.
研究组 & 干预措施
Observational: MM Patient Cohort
This cohort includes transplant-eligible patients with newly diagnosed multiple myeloma (NDMM) who have completed first-line anti-CD38-based quadruplet induction therapy and autologous stem cell transplantation (ASCT).
干预措施: DW-MRI (MY-RADS/RAC score) (Diagnostic Test)
Observational: MM Patient Cohort
This cohort includes transplant-eligible patients with newly diagnosed multiple myeloma (NDMM) who have completed first-line anti-CD38-based quadruplet induction therapy and autologous stem cell transplantation (ASCT).
干预措施: Fat Fraction (rFF%) (Diagnostic Test)
Observational: MM Patient Cohort
This cohort includes transplant-eligible patients with newly diagnosed multiple myeloma (NDMM) who have completed first-line anti-CD38-based quadruplet induction therapy and autologous stem cell transplantation (ASCT).
干预措施: Clinical Data Collection (Other)
结局指标
主要结局
Radiological Response Categories (RAC1 and RAC≥2)
时间窗: Post-ASCT / Pre-maintenance (approx. 3-4 months after ASCT))
Prevalence of radiological response categories evaluated by post-ASCT DW-MRI according to MY-RADS criteria.
次要结局
- Progression-Free Survival (PFS) according to RAC score(Minimum 2 years, up to 4 years)
- Overall Survival (OS) according to RAC score(Minimum 2 years, up to 4 years)
- PFS and OS according to relative Fat Fraction (rFF%)(Minimum 2 years, up to 4 years)
- RAC Score and IMWG Response Concordance(4 months post-ASCT)
- Concordance between RAC score and bone marrow MRD(Pre-maintenance (approx. 100 days post-ASCT))
- Early Relapse Rate and rFF%(18 months post-ASCT))
- PFS by Combined MRD and RAC Score(Through study completion, an average of 2 years)
- OS by Combined MRD and RAC Score(Through study completion, an average of 2 years.)