The study demonstrated a statistically significant improvement in overall MRD negativity rate and ≥CR rates at 22 months. The study demonstrated statistically significant improvement in PFS and sustained MRD at 39 months.1
MRD negativity (10-5) - Primary endpoint1
In the CEPHEUS study, the overall MRD-negativity rate (10-5) was 52.3% in the D-VRd arm and 34.8% in the VRd arm (P=0.0005)
*Based on ITT population.
†Patients achieved both MRD negativity (threshold of at or below 10-5) and ≥CR. All MRD testing was performed with a next-generation sequencing assay (clonoSEQ).
‡P value from Cochran Mantel-Haenszel Chi-Square test.
Additional efficacy outcomes1
*Based on ITT population.
†Patients achieving MRD negativity (threshold of 10-5 ) among only patients achieving a response of ≥CR.
‡Exact 95% confidence interval.
§P value from Cochran Mantel-Haenszel Chi-Square test.
Sustained MRD negativity rate (10-5)1
*Based on ITT population.
†Sustained MRD negativity is defined as confirmed MRD-negative status at two examinations at least 1 year apart without MRD-positive status in between.
‡P value from Fisher’s exact test.
Progression-free survival1
- Treatment with D-VRd resulted in a reduction in the risk of progression or death by 40% vs VRd alone (HR=0.60; 95% CI: 0.41-0.88; P=0.0078)
- The median PFS had not reached in either arm
Overall response rate1
*Based on ITT population.
†OR calculated using the Mantel-Haenszel method stratified by ISS stage and age/transplant eligibility; OR >1 favors D-VRd.
‡Sustained MRD negativity defined as ≥CR with MRD-negative status (≤10-5) at 2 assessments ≥1 year apart, with no MRD-positive results in between. MRD was assessed from bone marrow using an NGS assay (clonoSEQ v2.0) per IMWG MRD guidelines.
Progression-free survival2*
- Treatment with D-VRd resulted in a reduction in the risk of progression or death by 43% vs VRd alone (HR=0.57; 95% CI: 0.41-0.79; P=0.0005)
- The median PFS had not reached in the D-VRd treatment arm and was 52.6 months in the VRd treatment arm
*Based on ITT population.
†Final PFS analysis conducted after 162 events; 8 events were censored due to missing ≥2 consecutive disease evaluations.
‡P value was calculated using the stratified log-rank test.