Drugs, Health Technologies, Health Systems

Reimbursement Recommendation

Daratumumab (Darzalex SC)

Indication: Daratumumab in combination with bortezomib, lenalidomide, and dexamethasone for the treatment of adult patients with newly diagnosed multiple myeloma who are not candidates for autologous stem cell transplant.

Sponsor: Janssen Inc.

Final recommendation: Reimburse with conditions

Summary

What Is the Reimbursement Recommendation for Darzalex SC?

Canada’s Drug Agency (CDA-AMC) recommends that Darzalex SC (daratumumab) in combination with bortezomib, lenalidomide, and dexamethasone (D-VRd) be reimbursed by public drug plans for the treatment of adult patients with newly diagnosed multiple myeloma (NDMM) who are not suitable for autologous stem cell transplant (ASCT) or for whom ASCT is not planned as the initial treatment, if certain conditions are met.

Why Did CDA-AMC Recommend Reimbursement?

The pan-Canadian Oncology Drug Review Expert Review Committee (pERC) determined that D-VRd demonstrates acceptable clinical value versus the combination of bortezomib, lenalidomide, and dexamethasone (VRd) in patients with NDMM who are not candidates for ASCT. Evidence from a clinical trial (CEPHEUS; N = 395) demonstrated that when compared to VRd, D-VRd given for 58 months prolonged the time until disease progression or death and was associated with an improved response to treatment in patients with NDMM who are not candidates for ASCT. Evidence from indirect treatment comparisons (ITCs) showed that in these patients, time to disease progression or death and response to treatment were improved with D-VRd when compared to daratumumab in combination with lenalidomide and dexamethasone (DRd) or compared with daratumumab in combination with bortezomib, melphalan, and prednisone (DVMp). However, the magnitude of benefit is uncertain, mainly due to differences in patients’ baseline characteristics between the clinical trials included in the ITCs. Evidence from ITCs also showed that time to disease progression or death and response to treatment were similar between groups receiving D‑VRd or the combination of isatuximab with VRd (Isa-VRd).

In the CEPHEUS trial, there was a large amount of missing data for health-related quality of life (HRQoL) outcomes; therefore, the clinical value of the improvements in HRQoL associated with D-VRd cannot be determined. Additionally, Darzalex SC was considered an additive therapy to VRd, and there were higher incidences of serious adverse events (AEs), infections and infestations, and low levels of certain blood cells associated with D-VRd.

Which Patients Are Eligible for Coverage?

Darzalex SC should only be reimbursed for adult patients with NDMM who are not suitable for ASCT or do not plan to receive ASCT as the initial treatment. Patients should also have good performance status and must not have received prior treatments for multiple myeloma. They also should not have signs of meningeal involvement of multiple myeloma.

What Are the Conditions for Reimbursement?

Darzalex SC should only be reimbursed if prescribed in combination with VRd, if prescribed by clinicians with expertise in diagnosis and management of multiple myeloma, and if the cost of Darzalex SC is reduced.

Review Background

Highlights of Input From Interested Parties

The patient group that provided input (Myeloma Canada) noted the following points regarding impacts of the disease, unmet needs, and important outcomes:

The clinician group (the Ontario Health [Cancer Care Ontario] Hematology Cancer Drug Advisory Committee) and the clinical experts consulted by CDA-AMC noted the following points regarding unmet needs arising from the disease and the place in therapy for the drug under review:

Participating public drug programs raised potential implementation issues related to considerations for initiation, renewal, discontinuation, and prescribing of therapy; generalizability of trial populations to broader populations; care provision issues; system and economic issues; and the potential need to amend the provisional funding algorithm.

Recommendation

With a vote of 16 in favour to 0 against, pERC recommends that D-VRd be reimbursed for adult patients with NDMM who are not candidates for ASCT only if the conditions listed in Table 1 are met.

Table 1: Reimbursement Conditions and Reasons

Reimbursement condition

Reason

Implementation guidance

Initiation

1. Treatment with D-VRd should only be initiated in adult patients with previously untreated multiple myeloma for whom ASCT is not planned as initial therapy due to ineligibility or patient or clinician preference.

Evidence from the CEPHEUS trial demonstrated that treatment with D-VRd resulted in a clinically meaningful benefit in adult patients (aged 18 years or older) with symptomatic multiple myeloma, as defined by the IMWG criteria, among whom ASCT is not received as initial therapy due to their age (70 years or older), comorbid conditions, or patient preference.

In the trial, bortezomib was administered twice weekly, which differs from dosing used in most Canadian centres. Once-weekly bortezomib administration is also an option.

2. Patients must have good performance status.

The CEPHEUS trial excluded adults with ECOG Performance Status scores > 2. Overall, 37 patients (9.4%) enrolled in the CEPHEUS trial had an ECOG Performance Status score of 2.

In clinical practice, most patients older than 80 years or with ECOG Performance Status scores > 2 would not be treated with D-VRd. However, older patients who do not have frailty may still be considered for this treatment.

3. Patients must not have

  3.1. received prior systemic therapy (except corticosteroids) or SCT for multiple myeloma

  3.2. clinical signs of meningeal involvement of multiple myeloma.

Patients with NDMM exhibiting clinical signs of meningeal involvement were excluded from the CEPHEUS trial; therefore, the efficacy and safety of D‑VRd in this population is unknown.

Patients with concomitant plasma cell leukemia should be eligible for treatment with D-VRd.

Patients with the following conditions would not be eligible for treatment with D‑VRd:

  • amyloidosis

  • smouldering myeloma

  • monoclonal gammopathy of undetermined significance.

Discontinuation

4. Treatment should be discontinued upon the occurrence of either of the following:

  4.1. evidence of disease progression according to IMWG criteria

  4.2. unacceptable toxicity.

Patients in the CEPHEUS trial discontinued treatment upon disease progression or unacceptable toxicity, consistent with clinical practice. This condition reflects the parameters for treatment discontinuation used in the CEPHEUS trial.

If prolonged treatment breaks occur, treatment with D-VRd can be resumed if disease progression had not occurred before the treatment break.

If 1 of the drugs in the regimen is discontinued, treatment can continue with the other drugs in the regimen until disease progression or unacceptable toxicity occurs.

Prescribing

5. D-VRd should be prescribed by clinicians with expertise in managing patients with multiple myeloma.

To ensure that D-VRd is prescribed for appropriate patients and that adverse effects are managed in an optimized and timely manner.

Pricing

6. A reduction in price.

Using the CDA-AMC base-case analysis, the ICER for D-VRd was $10,623,156 per QALY gained when compared with VRd and $7,029,398 per QALY gained when compared with DRd in the indicated population.

A band 4a price reduction would be required to achieve cost-effectiveness at a $50,000 per QALY gained threshold compared with VRd and a band 2a price reduction would be required to achieve cost-effectiveness at a $50,000 per QALY gained threshold compared with DRd.

A band 4a price reduction would be required to achieve cost-effectiveness at a $100,000 per QALY gained threshold compared with VRd, and a band 2a price reduction would be required to achieve cost-effectiveness at a $100,000 per QALY gained threshold compared with DRd.

Exact price reductions at any given willingness-to-pay threshold can be found in the CDA-AMC Main Report and Supplemental Material documents.

The CDA-AMC analysis is based on public list prices for all treatments. Further price reductions may be required if there are price arrangements (discounts) currently in place for any treatment included in the economic analysis.

ASCT = autologous stem cell transplant; CDA-AMC = Canada’s Drug Agency; DRd = daratumumab in combination with lenalidomide and dexamethasone; D-VRd = daratumumab in combination with bortezomib, lenalidomide, and dexamethasone; ECOG = Eastern Cooperative Oncology Group; ICER = incremental cost-effectiveness ratio; IMWG = International Myeloma Working Group; NDMM = newly diagnosed multiple myeloma; QALY = quality-adjusted life-year; SCT = stem cell transplant; VRd = bortezomib, lenalidomide, and dexamethasone.

aFor statements regarding the size of the price reduction required, band 1 = 1% to 24%, band 2 = 25% to 49%, band 3 = 50% to 74%, and band 4 = 75% or greater.

Rationale for the Recommendation

Clinical Value

Based on the totality of the clinical evidence, pERC concluded that D-VRd demonstrates acceptable clinical value compared with appropriate comparators (e.g., VRd, DRd, DVMp) in patients with NDMM who are not candidates for ASCT. An acceptable clinical value refers to prolonged survival or higher rates of disease response with D-VRd versus with these comparators.

Evidence from 1 randomized, open-label, active-controlled, multicentre phase III trial (CEPHEUS; N = 395) demonstrated that treatment with D-VRd resulted in acceptable clinical value — in progression-free survival (PFS) and the minimal residual disease (MRD) negativity rate — for patients with NDMM who are not candidates for ASCT, compared with VRd. After a median follow-up time of 58.71 months, the median PFS was not reached in the D-VRd group and was 52.63 months in the VRd group. At 54 months, the Kaplan-Meier (KM) estimates of the probability of PFS were 68.1% (95% confidence interval [CI], 60.8% to 74.3%) in the D-VRd group and 49.5% (95% CI, 41.8% to 56.8%) in the VRd group, with a between-group difference of ████% (95% CI, ███% to ████%). The overall MRD negativity rate at 10-5 was 60.9% (95% CI, 53.7% to 67.8%) in the D-VRd group and 39.4% (95% CI, 32.5% to 46.6%) in the VRd group. The between-group difference in the overall MRD negativity rate at 10-5 was ████% (95% CI, ████% to ████%).

In the CEPHEUS trial, after a median follow-up time of 58.71 months, OS data were not mature; the median OS was not reached for either treatment group. The 54-month KM estimates of the OS rate were 74.2% (95% CI, 67.3% to 79.8%) in the D-VRd group and 69.6% (95% CI, 62.5% to 75.7%) in the VRd group, with a between-group difference of ███% (95% CI, ████% to ████%).

With respect to quality of life, the data from the CEPHEUS trial suggest that D-VRd may not result in any clinically important difference in patients’ HRQoL compared to VRd, and no firm conclusions could be drawn on HRQoL due to the large amount of missing data. D-VRd likely results in an increase in the incidence of serious AEs, infections and infestations, and cytopenia compared to VRd. The committee agreed with the clinical experts that the types of AEs in the trial were as expected for D-VRd.

Evidence from 3 ITC analyses suggests an improvement in PFS and the MRD negativity rate with D-VRd when compared to DRd or DVMp, although the magnitude of benefit is uncertain. This uncertainty was likely related to cross-trial heterogeneity (e.g., patients’ characteristics differed at baseline). There was no statistically significant difference in OS between D-VRd and DRd or DVMp. The ITC of the comparison of D-VRD with Isa-VRd showed no statistically significant difference between the 2 treatment regimens; the evidence is insufficient to conclude whether D-VRd or Isa-VRd is favoured for prolonging PFS or OS, or for improving the MRD negativity rate in this population.

Further information on the committee’s discussion around clinical value is provided in the Summary of Deliberation section.

Developing the Recommendation

The determination of acceptable clinical value was sufficient for pERC to recommend reimbursement of D-VRd. As part of the deliberation on whether to recommend reimbursement, the committee also considered unmet clinical need, unmet nonclinical need, and health inequity. Information on this discussion is provided in the Unmet Clinical Need and the Distinct Social and Ethical Considerations domains in the Summary of Deliberation section.

Because pERC recommended that D-VRd be reimbursed, the committee also deliberated on whether reimbursement conditions should be added to address important economic considerations, health system impacts, or social and ethical considerations, or to ensure clinical value is realized. The resulting reimbursement conditions, with accompanying reasons and implementation guidance, are stated in Table 1.

Summary of Deliberation

pERC considered all domains of value of the deliberative framework before developing its recommendation: clinical value, unmet clinical need, distinct social and ethical considerations, economic considerations, and impacts on health systems. For further information on the domains of value, refer to Expert Committee Deliberation at Canada’s Drug Agency.

The committee considered the following key discussion points, organized by the 5 domains of value.

Clinical Value

Unmet Clinical Need

Distinct Social and Ethical Considerations

Economic Considerations

Impacts on Health Systems

Sources of Information Used by the Committee

To make its recommendation, the committee considered the following information (links to the full documents for the review can be found on the project web page):

pERC Information

Members of the Committee

Dr. Catherine Moltzan (Chair), Dr. Kelvin Chan (Vice-Chair), Paul Agbulu, Dr. Phillip Blanchette, Dr. Matthew Cheung, Dr. Michael Crump, Annette Cyr, Dr. Jennifer Fishman, Dr. Jason Hart, Terry Hawrysh, Dr. Yoo-Joung Ko, Dr. Aly-Khan Lalani, Amy Peasgood, Dr. Anca Prica, Dr. Michael Raphael, Dr. Adam Raymakers, Dr. Patricia Tang, Dr. Pierre Villeneuve, and Danica Wasney.

Meeting date: January 14, 2026

Regrets: Two expert committee members did not attend.

Conflicts of interest: None