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NCT Number: NCT05730036

A Trial to Learn How Well Linvoseltamab Works Compared to the Combination of Elotuzumab, Pomalidomide and Dexamethasone for Adult Participants With Relapsed/Refractory Multiple Myeloma

This study is researching an experimental drug called linvoseltamab, also called REGN5458.

Linvoseltamab has previously been studied by itself (without other cancer drugs) in participants who had advanced multiple myeloma that returned and needed to be treated again after many other therapies had failed. These participants were no longer benefiting from standard medications and had no good treatment options. In that study, some participants who were treated with linvoseltamab had improvement of their myeloma (shrinkage of their tumors), including some participants who had complete responses (that is, the treatment got rid of all evidence of myeloma in their bodies).

This study is focused on participants who have multiple myeloma that has returned or needs to be treated again after one to four prior treatments and have standard cancer treatment options available to them. The aim of this study is to see how safe and effective linvoseltamab is compared to a combination of three cancer drugs: elotuzumab, pomalidomide and dexamethasone, (called EPd) in participants who have returned after having received prior treatment that included lenalidomide, a proteosome inhibitor, and (for participants in some countries) a cluster of differentiation 38 (CD38) antibody. Half of the participants in this study will get linvoseltamab, and the other half will get EPd.

This study is looking at several other research questions, including:

* How long participants benefit from receiving linvoseltamab compared with EPd * How many participants treated with linvoseltamab or EPd have improvement of their multiple myeloma and by how much * What side effects happen from taking linvoseltamab compared to EPd * How long participants live while receiving treatment or after treatment with linvoseltamab compared to EPd * If there is any improvement in pain after treatment with linvoseltamab compared to EPd

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Key information

Conditions

Relapsed Refractory Multiple Myeloma (RRMM) Blood Protein Disorders Cardiovascular Diseases Hematologic Diseases Hemic and Lymphatic Diseases Hemorrhagic Disorders Hemostatic Disorders Immune System Diseases Immunoproliferative Disorders Lymphoproliferative Disorders Multiple Myeloma Neoplasms Neoplasms by Histologic Type Neoplasms, Plasma Cell Paraproteinemias Vascular Diseases

Age range

18 year and older

Sex eligibility

All sexes

Study type

Interventional

Phase

Phase 3

Primary location

Royal Prince Alfred Hospital, Camperdown, New South Wales, Australia

Loading trial locations.

Who can participate

Healthy volunteers accepted: No

Only the study team can determine whether someone qualifies for participation.

Key Inclusion Criteria:

  • Age 18 years or older (or legal adult age in the country) at the time of the screening visit.
  • Eastern Cooperative Oncology Group (ECOG) performance status ≤1. Patients with ECOG 2 solely due to local symptoms of myeloma (eg. pain) may be allowed after discussion with the Medical Monitor.
  • Received at least 1 and no more than 4 prior lines of anti-neoplastic MM therapies, including lenalidomide and a proteasome inhibitor and demonstrated disease progression on or after the last therapy as defined by the 2016 IMWG criteria. Participants who have received only 1 line of prior line of antimyeloma therapy must be lenalidomide refractory, as described in the protocol.

Note: Participants in Israel also must have previously received a CD38 antibody. Participants in the EU and the UK must have previously received 2 to 4 prior lines of therapy, including a CD38 antibody.

  • Patients must have measurable disease for response assessment as per the 2016 IMWG response assessment criteria, as described in the protocol
  • Adequate hematologic function and hepatic function within 7 days of randomization, as well as adequate renal and cardiac function and corrected calcium
  • Life expectancy of at least 6 months

Key Exclusion Criteria:

  • Diagnosis of plasma cell leukemia, amyloidosis, Waldenström macroglobulinemia, or POEMS syndrome (polyneuropathy, organomegaly, endocrinopathy, monoclonal protein, and skin changes).
  • Prior treatment with elotuzumab and/or pomalidomide
  • Participants with known MM brain lesions or meningeal involvement
  • Treatment with any systemic anti-cancer therapy within 5 half-lives or within 28 days before first administration of study drug, whichever is shorter
  • History of allogeneic stem cell transplantation within 6 months, or autologous stem cell transplantation within 12 weeks of the start of study treatment. Participants who have received an allogeneic transplant must be off all immunosuppressive medications for 6 weeks without signs of graft-versus-host disease. Steroids at doses equivalent to suppletion doses may be acceptable.
  • Prior treatment with B-cell maturation antigen (BCMA) directed immunotherapies Note: BCMA antibody-drug conjugates are allowed.
  • History of progressive multifocal leukoencephalopathy (PML), known or suspected PML, or history of a neurocognitive condition or central nervous system (CNS) movement disorder (Parkinson's disease or Parkinsonism).
  • Any infection requiring hospitalization or treatment with IV anti-infectives within 2 weeks of first administration of study drug
  • Uncontrolled infection with human immunodeficiency virus (HIV), hepatitis B virus (HBV) or hepatitis C virus (HCV); or another uncontrolled infection, as defined in the protocol 10 Cardiac ejection fraction <40%.

NOTE: Other protocol defined inclusion/exclusion criteria apply

Treatment and study plan

Linvoseltamab

Drug

REGN5458 will be administered by intravenous (IV) infusion

Other names: REGN5458, Lynozyfic™

Elotuzumab

Drug

Elotuzumab will be administered by IV infusion

Other names: Empliciti

Pomalidomide

Drug

Pomalidomide capsules will be administered by mouth (PO)

Other names: Pomalyst

Dexamethasone

Drug

Dexamethasone tablets/capsules will be administered PO and/or by IV infusion

Other names: Decadron

Primary outcomes

  1. Progression Free Survival (PFS) per International Myeloma Working Group (IMWG) response criteria determined by Independent Review Committee (IRC) in CD38 antibody exposed participants

    Time frame: Up to approximatively 5 years

Secondary outcomes

  1. PFS per IMWG response criteria determined by IRC in all participants

    Time frame: Up to approximatively 5 years

  2. Objective Response (OR) of Complete Response (CR) or better per IMWG response criteria as determined by IRC in CD38 antibody exposed participants

    Time frame: Up to approximatively 5 years

  3. OR of CR or better per IMWG response criteria as determined by IRC in all participants

    Time frame: Up to approximatively 5 years

  4. Overall Survival (OS) in participants previously exposed to CD38 antibodies

    Time frame: Up to approximatively 5 years

  5. OS in all participants

    Time frame: Up to approximatively 5 years

  6. Incidence of minimal residual disease (MRD) negative status in participants previously exposed to CD38 antibodies

    Time frame: Up to approximatively 5 years

  7. Incidence of MRD negative status in all participants

    Time frame: Up to approximatively 5 years

  8. Mean change in the worst pain score measured by Brief Pain Inventory-Short Form (BPI-SF) Item 3 in participants previously exposed to CD38 antibodies

    Time frame: Baseline to week 12

    The BPI-SF is a validated, self-administered questionnaire designed to measure a participant's perceived level of pain. The BPI-SF Item 3 uses a numeric rating scale to assess pain severity and pain interference in the past 24 hours. The numeric rating scale ranges from 0 (no pain) to 10 (worst imaginable pain), where higher scores indicate greater intensity of pain.

  9. Mean change in the worst pain score measured by BPI-SF Item 3 in all participants

    Time frame: Baseline to week 12

    The BPI-SF is a validated, self-administered questionnaire designed to measure a participant's perceived level of pain. The BPI-SF Item 3 uses a numeric rating scale to assess pain severity and pain interference in the past 24 hours. The numeric rating scale ranges from 0 (no pain) to 10 (worst imaginable pain), where higher scores indicate greater intensity of pain.

  10. Incidence of treatment emergent adverse events (TEAEs) in participants previously exposed to CD38 antibodies

    Time frame: Up to approximatively 5 years

  11. Incidence TEAEs in all participants

    Time frame: Up to approximatively 5 years

  12. Severity of TEAEs in participants previously exposed to CD38 antibodies

    Time frame: Up to approximatively 5 years

  13. Severity of TEAEs in all participants

    Time frame: Up to approximatively 5 years

  14. Incidence of adverse events of special interest (AESI) in participants previously exposed to CD38 antibodies

    Time frame: Up to approximatively 5 years

  15. Incidence of AESI in all participants

    Time frame: Up to approximatively 5 years

  16. Severity of AESI in participants previously exposed to CD38 antibodies

    Time frame: Up to approximatively 5 years

  17. Severity AESI in all participants

    Time frame: Up to approximatively 5 years

  18. Incidence of Serious Adverse Events (SAE) in participants previously exposed to CD38 antibodies

    Time frame: Up to approximatively 5 years

  19. Incidence of SAE in all participants

    Time frame: Up to approximatively 5 years

  20. Severity of SAE in participants previously exposed to CD38 antibodies

    Time frame: Up to approximatively 5 years

  21. Severity of SAE in all participants

    Time frame: Up to approximatively 5 years

  22. PFS per IMWG response criteria as determined by the investigator in participants previously exposed to CD38 antibodies

    Time frame: Up to approximatively 5 years

  23. PFS per IMWG response criteria as determined by the investigator in all participants

    Time frame: Up to approximatively 5 years

  24. OR of Partial Response (PR) or better per IMWG response criteria as determined by the IRC in CD38 antibody exposed participants

    Time frame: Up to approximatively 5 years

  25. OR of PR or better per IMWG response criteria as determined by the IRC in all participants

    Time frame: Up to approximatively 5 years

  26. OR of Very Good Partial Response (VGPR) or better per IMWG response criteria as determined by IRC in CD38 antibody exposed participants

    Time frame: Up to approximatively 5 years

  27. OR of VGPR or better per IMWG response criteria as determined by IRC in all participants

    Time frame: Up to approximatively 5 years

  28. OR of PR or better per IMWG response criteria as determined by the investigator in participants previously exposed to CD38 antibodies

    Time frame: Up to approximatively 5 years

  29. OR of PR or better per IMWG response criteria as determined by the investigator in all participants

    Time frame: Up to approximatively 5 years

  30. OR of VGPR or better per IMWG response criteria as determined by the investigator in participants previously exposed to CD38 antibodies

    Time frame: Up to approximatively 5 years

  31. OR of VGPR or better per IMWG response criteria as determined by the investigator in all participants

    Time frame: Up to approximatively 5 years

  32. OR of CR or better per IMWG response criteria as determined by the investigator in participants previously exposed to CD38 antibodies

    Time frame: Up to approximatively 5 years

  33. OR of CR or better per IMWG response criteria as determined by the investigator in all participants

    Time frame: Up to approximatively 5 years

  34. Duration of Response (DoR) as per IMWG response criteria as determined by the investigator in participants previously exposed to CD38 antibodies

    Time frame: Up to approximatively 5 years

  35. DoR as per IMWG response criteria as determined by the investigator in all participants

    Time frame: Up to approximatively 5 years

  36. DoR as per IMWG response criteria as determined by the IRC in participants previously exposed to CD38 antibodies

    Time frame: Up to approximatively 5 years

  37. DoR as per IMWG response criteria as determined by the IRC in all participants

    Time frame: Up to approximatively 5 years

  38. Duration of MRD negative status in the bone marrow in participants previously exposed to CD38 antibodies

    Time frame: Up to approximatively 5 years

  39. Duration of MRD negative status in the bone marrow in all participants

    Time frame: Up to approximatively 5 years

  40. Time from randomization to objective response (≥PR) as per IMWG response criteria as determined by the investigator in participants previously exposed to CD38 antibodies

    Time frame: Up to approximatively 5 years

  41. Time from randomization to objective response (≥PR) as per IMWG response criteria as determined by the investigator in all participants

    Time frame: Up to approximatively 5 years

  42. Time from randomization to objective response (≥PR) as per IMWG response criteria as determined by the IRC in participants previously exposed to CD38 antibodies

    Time frame: Up to approximatively 5 years

  43. Time from randomization to objective response (≥PR) as per IMWG response criteria as determined by the IRC in all participants

    Time frame: Up to approximatively 5 years

  44. Concentration of linvoseltamab in the serum over time in participants previously exposed to CD38 antibodies

    Time frame: Up to approximatively 5 years

  45. Concentration of linvoseltamab in the serum over time in all participants

    Time frame: Up to approximatively 5 years

  46. Incidence of antidrug antibodies (ADAs) in participants previously exposed to CD38 antibodies

    Time frame: Up to approximatively 5 years

  47. Incidence of ADAs in all participants

    Time frame: Up to approximatively 5 years

  48. Titer of ADAs in participants previously exposed to CD38 antibodies

    Time frame: Up to approximatively 5 years

  49. Titer of ADAs in all participants

    Time frame: Up to approximatively 5 years

  50. Incidence of neutralizing antibodies (Nabs) to linvoseltamab over time in participants previously exposed to CD38 antibodies

    Time frame: Up to approximatively 5 years

  51. Incidence of Nabs to linvoseltamab over time in all participants

    Time frame: Up to approximatively 5 years

  52. Proportion of Pain Responders in participants previously exposed to CD38 antibodies

    Time frame: At week 12

    Defined by at least a 2-point reduction from baseline in the BPI-SF Item 3 without an increase in analgesic use using the modified Analgesic Quantification Algorithm (AQA).

  53. Proportion of Pain Responders in all participants

    Time frame: At week 12

    Defined by at least a 2-point reduction from baseline in the BPI-SF Item 3 without an increase in analgesic use using the modified Analgesic Quantification Algorithm (AQA).

  54. Change in patient-reported global health status/quality of life (QoL), per European Organization for Research and Treatment of Cancer Quality of Life Questionnaire (EORTC QLQ-C30) in participants previously exposed to CD38 antibodies

    Time frame: Baseline to week 12

    The EORTC-QLQ-C30 is a 30-item subject self-report questionnaire composed of both multi-item and single scales, including global health status/quality of life, functional Scales (physical, role, emotional, cognitive, and social), symptom scales (fatigue, nausea and vomiting, and pain), and 6 single items (dyspnea, insomnia, appetite loss, constipation, diarrhea, and financial difficulties). Participants rate items on a 4-point scale, with 1 as "not at all" and 4 as "very much."

  55. Change in patient-reported QoL, per EORTC QLQ-C30 in all participants

    Time frame: Baseline to week 12

    The EORTC-QLQ-C30 is a 30-item subject self-report questionnaire composed of both multi-item and single scales, including global health status/quality of life, functional Scales (physical, role, emotional, cognitive, and social), symptom scales (fatigue, nausea and vomiting, and pain), and 6 single items (dyspnea, insomnia, appetite loss, constipation, diarrhea, and financial difficulties). Participants rate items on a 4-point scale, with 1 as "not at all" and 4 as "very much."

  56. Change in patient reported disease symptoms per EORTC Quality of Life Questionnaire-Multiple Myeloma (MM) module 20 [QLQ-MY20]) in participants previously exposed to CD38 antibodies

    Time frame: Baseline to week 12

    The EORTC QLQ-MY20 is a self -administered instrument to assess QoL in persons with MM. This 20-item questionnaire measures the following domains: symptom scales, including disease symptoms (6 items) and symptoms related to side effects of treatment (10 items); function scale and future perspective (3 items); and body image (1 item). A high score represents a high level of symptoms or problems.

  57. Change in patient reported disease symptoms per EORTC QLQ-MY20 in all participants

    Time frame: Baseline to week 12

    The EORTC QLQ-MY20 is a self -administered instrument to assess QoL in persons with MM. This 20-item questionnaire measures the following domains: symptom scales, including disease symptoms (6 items) and symptoms related to side effects of treatment (10 items); function scale and future perspective (3 items); and body image (1 item). A high score represents a high level of symptoms or problems.

  58. Patient-Reported Outcomes in Patient Global Impression of Symptom Severity (PGIS) in participants previously exposed to CD38 antibodies

    Time frame: Baseline to week 12

    The PGIS is a single 1-item questionnaire designed to assess participant's overall impression of disease severity at a given point in time by using a 4-point Likert scale that ranges from (1) = "none (no symptoms)" to (4) = "severe".

    The global anchor, PGIS will be used for interpretation of EORTC QLQ-C30, EORTC QLQ-MY20, and BPI-SF.

  59. Patient-Reported Outcomes in PGIS in all participants

    Time frame: Baseline to week 12

    The PGIS is a single 1-item questionnaire designed to assess participant's overall impression of disease severity at a given point in time by using a 4-point Likert scale that ranges from (1) = "none (no symptoms)" to (4) = "severe".

    The global anchor, PGIS will be used for interpretation of EORTC QLQ-C30, EORTC QLQ-MY20, and BPI-SF.

  60. Patient-Reported Outcomes in Patient Global Impression of Change (PGIC) in participants previously exposed to CD38 antibodies

    Time frame: Baseline to week 12

    The PGIC is a single-item questionnaire designed to assess the participant's overall sense of whether there has been a change since starting treatment as rated on a 5-point Likert scale anchored by (1) "much better" to (5) "much worse", with (4) = "no change".

    The global anchor, PGIC will be used for interpretation of EORTC QLQ-C30, EORTC QLQ-MY20, and BPI-SF.

  61. Patient-Reported Outcomes in PGIC in all participants

    Time frame: Baseline to week 12

    The PGIC is a single-item questionnaire designed to assess the participant's overall sense of whether there has been a change since starting treatment as rated on a 5-point Likert scale anchored by (1) "much better" to (5) "much worse", with (4) = "no change".

    The global anchor, PGIC will be used for interpretation of EORTC QLQ-C30, EORTC QLQ-MY20, and BPI-SF.

  62. Change in patient-reported general health status per EuroQoL-5 Dimension-5 Level Scale [EQ-5D-5L]) in participants previously exposed to CD38 antibodies

    Time frame: Baseline to week 12

    The EQ-5D-5L consists of EQ-5D descriptive system comprises five dimensions: mobility, self-care, usual activities, pain/discomfort and anxiety/depression. Each dimension has 5 levels: no problems, slight problems, moderate problems, severe problems and extreme problems.

  63. Change in patient-reported general health status per EQ-5D-5L in all participants

    Time frame: Baseline to week 12

    The EQ-5D-5L consists of EQ-5D descriptive system comprises five dimensions: mobility, self-care, usual activities, pain/discomfort and anxiety/depression. Each dimension has 5 levels: no problems, slight problems, moderate problems, severe problems and extreme problems.

Study contacts

Contact information is provided by the study sponsor or research team.

Clinical Trials Administrator

CONTACT

[email protected]

844-734-6643

Sponsors and collaborators

Lead sponsor

Regeneron Pharmaceuticals

Industry

Registry information

Official study title

An Open-label, Randomized, Phase 3 Study of Linvoseltamab (REGN5458; Anti- BCMA x Anti-CD3 Bispecific Antibody) Versus the Combination of Elotuzumab, Pomalidomide, and Dexamethasone (EPd), in Patients With Relapsed/Refractory Multiple Myeloma (LINKER-MM3)

Acronym: LINKER-MM3

Important dates

Study start
2023
Primary completion
2033
Study completion
2033
First posted
Feb 15, 2023
Registry last updated
Mar 6, 2026

OpenTrials presents study information sourced from ClinicalTrials.gov. The official registry record should be consulted for the latest information.

View the official ClinicalTrials.gov record (opens in a new tab)

This listing is for discovery and informational purposes only. It is not medical advice, does not guarantee that a study is recruiting, and does not determine eligibility. Contact the study team and a qualified healthcare professional when considering participation.

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