Dose-Escalation Study of ABBV-838, an Antibody Drug Conjugate, in Subjects With Relapsed and Refractory Multiple Myeloma
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ClinicalTrials.gov Identifier: NCT02462525 |
Recruitment Status :
Terminated
(No Go decision for ABBV-838)
First Posted : June 4, 2015
Last Update Posted : September 13, 2018
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Condition or disease | Intervention/treatment | Phase |
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Multiple Myeloma | Drug: ABBV-838 Drug: Pomalidomide Drug: Dexamethasone | Phase 1 |
Study Type : | Interventional (Clinical Trial) |
Actual Enrollment : | 74 participants |
Allocation: | Non-Randomized |
Intervention Model: | Single Group Assignment |
Masking: | None (Open Label) |
Primary Purpose: | Treatment |
Official Title: | A Multicenter, Phase 1/1b, Open-Label, Dose-Escalation Study of ABBV-838, an Antibody Drug Conjugate, in Subjects With Relapsed and Refractory Multiple Myeloma |
Actual Study Start Date : | May 6, 2015 |
Actual Primary Completion Date : | December 6, 2017 |
Actual Study Completion Date : | December 6, 2017 |

Arm | Intervention/treatment |
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Experimental: ABBV-838 dose escalation
Varying doses of ABBV-838
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Drug: ABBV-838
Varying doses of ABBV-838 |
Experimental: ABBV-838 plus pomalidomide/dexamethasone
ABBV-838 to be evaluated with pomalidomide/dexamethasone.
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Drug: ABBV-838
Varying doses of ABBV-838 Drug: Pomalidomide Administered orally per the label. Drug: Dexamethasone Administered orally per the label. |
- Maximum plasma concentration (Cmax) of ABBV-838 [ Time Frame: Cycle 1 Day 1 (C1D1) and C3D1 pre- and post-dose; C1D4, C1D8, C1D15, C2D1, C2D15, C3D4, C3D8, C3D15, C4D1, and all subsequent ABBV-838 pre-dose dosing cycles ]The maximum plasma concentration (Cmax: measured in ng/ml) is the highest concentration that a drug achieves in the blood after the first dose, but before administration of a second dose.
- Maximum tolerated dose of ABBV-838 [ Time Frame: Up to 2 years from first dose of study ]The highest dose level at which less than 2 of 6 subjects or less than 33% of (if cohort is expanded beyond 6) subjects experience a dose limiting toxicity.
- Preliminary activity of ABBV-838 monotherapy [ Time Frame: At screening, Cycle 1 Day 15 (C1D15), C3D15, C4D1, and for subjects who have been on ABBV-838 for ≥ 6 cycles, radiologic tumor assessments may be performed every 3 cycles per Investigator discretion up to approximately 3 years ]Response evaluation will be based on International Myeloma Working Group (IMWG) Response Criteria.

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Ages Eligible for Study: | 18 Years to 99 Years (Adult, Older Adult) |
Sexes Eligible for Study: | All |
Accepts Healthy Volunteers: | No |
Inclusion Criteria:
- Eastern Cooperative Oncology Group Performance Status of 0 to 2
- Not eligible for stem cell/bone marrow transplant or have refused stem cell/bone marrow transplant or have relapsed after autologous or allogeneic stem cell/bone marrow transplant
- Eligible for and agree to BM aspirate prior to treatment start
- Measurable disease M component in serum (≥ 0.5 g/dL) and/or urine (≥ 0.2 g excreted in a 24 hour collection sample)
- Must have received at least 3 prior lines of therapy including a proteasome inhibitor and an immunomodulatory agent or those who are double refractory to a PI and an immunomodulatory agent and have demonstrated disease progression (DP) on or within 60 days of completion of the last therapy; participants previously treated with an alkylating agent, in addition to an IMiD or proteasome inhibitor, are allowed to enroll in the trial
- Participants must have adequate liver, kidney, and bone morrow function
- Participants with a history of chronic heart failure must have cardiac ECHO indicating left ventricular ejection fraction (LVEF) ≥ 45% within 21 days prior to first dose of study drug
- Participants in the combination therapy arms must be eligible to receive pomalidomide/dexamethasone, bortezomib/dexamethasone or lenalidomide/dexamethasone or other approved agents per current prescribing information for MM.
- Participants who will receive combination therapy with Pomalidomide/Dexamethasone must have received at least two prior therapies including lenalidomide and a proteasome inhibitor and have demonstrated disease progression on or within 60 days of completion of the last therapy
Exclusion Criteria:
- Received anti-cancer therapy including chemotherapy, immunotherapy, radiation, biologic, any investigational therapy or herbal therapy within a period of 21 days prior to the first dose of ABBV-838, and have unresolved toxicities ≥ grade 2
- Concurrent metastatic solid tumors
- Non-Measurable M Protein (serum or urine) and measurable sFLC (< 100 mg/mL)
- Major surgery within 21 days prior to the first dose of ABBV-838
- Clinically significant uncontrolled condition(s) including but not limited to the following:
Grade ≥ 3 peripheral neuropathy or grade 2 peripheral neuropathy with pain Uncontrolled hypercalcemia Active uncontrolled infection Symptomatic congestive heart failure Unstable angina pectoris or cardiac arrhythmia Psychiatric illness/social situation that would limit compliance with the study
- Major immunologic reaction to any IgG containing agent or auristatin based agent
- Participants who are taking strong CYP3A4 inhibitors
- Positive for HIV (Human Immunodeficiency Virus) or with active hepatitis B and/or C
- Corneal pathology that would limit evaluation of loss in visual acuity associated with corneal deposits.
- Prior exposure to pomalidomide for subjects enrolling in the pomalidomide/dexamethasone combination arm.

To learn more about this study, you or your doctor may contact the study research staff using the contact information provided by the sponsor.
Please refer to this study by its ClinicalTrials.gov identifier (NCT number): NCT02462525

Study Director: | AbbVie Inc. | AbbVie |
Responsible Party: | AbbVie |
ClinicalTrials.gov Identifier: | NCT02462525 |
Other Study ID Numbers: |
M14-467 2014-002609-39 ( EudraCT Number ) |
First Posted: | June 4, 2015 Key Record Dates |
Last Update Posted: | September 13, 2018 |
Last Verified: | September 2018 |
Individual Participant Data (IPD) Sharing Statement: | |
Plan to Share IPD: | Undecided |
relapsed multiple myeloma antibody drug conjugate refractory multiple myeloma |
Multiple Myeloma Neoplasms, Plasma Cell Neoplasms by Histologic Type Neoplasms Hemostatic Disorders Vascular Diseases Cardiovascular Diseases Paraproteinemias Blood Protein Disorders Hematologic Diseases Hemorrhagic Disorders Lymphoproliferative Disorders Immunoproliferative Disorders Immune System Diseases Dexamethasone |
Pomalidomide Anti-Inflammatory Agents Antiemetics Autonomic Agents Peripheral Nervous System Agents Physiological Effects of Drugs Gastrointestinal Agents Glucocorticoids Hormones Hormones, Hormone Substitutes, and Hormone Antagonists Antineoplastic Agents, Hormonal Antineoplastic Agents Immunologic Factors Angiogenesis Inhibitors Angiogenesis Modulating Agents |