New hope for Hard-to-Treat myeloma? early trial of ABBV-438 begins
NCT ID NCT07409246
First seen Jun 27, 2026 · Last updated Aug 14, 2026 · Updated 1 time
Summary
This early-stage trial tests an investigational drug called ABBV-438 in about 127 adults with multiple myeloma that has come back or stopped responding to treatment. The study has two parts: first, finding a safe dose, then testing that dose in more people. The main goal is to check safety and how the drug moves through the body, while also looking for signs that it might shrink the cancer.
What this could mean
Our plain-language read of the trial. This is informational only, not medical advice or a prediction.
- Active substance
- ABBV-438
- What this could lead to
- If successful, this could point toward a new treatment option for people with multiple myeloma that has stopped responding to other therapies.
- What could go wrong
- This is a very early Phase 1 trial, so the drug may not work or could have unexpected side effects. It is small and focused on safety, not proof of effectiveness.
This is an AI summary of the original study and may miss details. Read our disclaimer.
Study facts
What this study's own registry entry says, in plain language.
- Phase
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Phase 1
The first testing in people. Mainly checks safety and dose, usually in a small group.
- Participants
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About 127 people
The number the study aims to enrol. It can still change while the study runs.
- Started
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Feb 2026
- Expected to finish
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Nov 2031
An estimate. End dates often move.
- Lead sponsor
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A company
The lead sponsor is a pharmaceutical, biotech, or medical-device company.
Who can take part
This study's own entry requirements. Only the study team can say for certain whether you qualify.
- Ages
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18 years and older
- Sex
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Anyone
- Healthy volunteers
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Not accepted
This study is not open to healthy volunteers. The entry requirements below say who it is open to.
Show the full entry requirements Hide the full entry requirements
Copied word for word from the study's registry entry, so the wording is the study team's rather than ours.
Inclusion Criteria: * Has relapsed or refractory Multiple Myeloma (MM) with documented evidence of progression during or after the participant's last treatment regimen based on the investigator's determination of the standard International Myeloma Working Group (IMWG) (2016) response criteria: * Relapsed defined as previously treated myeloma that progresses and requires initiation of salvage therapy; * Refractory defined as disease that is nonresponsive (failure to achieve minimal response) while on last therapy, or progresses within 60 days of last therapy. * Has measurable disease at screening, defined by at least 1 of the following within 28 days prior to enrollment: * Serum M-protein \>= 0.5 g/dL (\>=5 g/L); OR; * Urine M-protein \>= 200 mg/24 hours; OR; * Involved serum free light chain (sFLC) \>= 10 mg/dL (100mg/L), provided serum FLC ratio is abnormal; * Must have had 3 or more prior lines of therapy with exposure to a proteasome inhibitor (PI), an immunomodulatory imide drugs (IMiD), and an anti-CD38 therapy and are intolerant to, or unable to access, available therapies that are known to confer clinical benefit to participants with relapsed or refractory (R/R) MM. Note: A line of therapy consists of relapsed or refractory 1 complete cycle of a single agent, a regimen consisting of a combination of several drugs, or a planned sequential therapy of various regimens. Exclusion Criteria: * Known history of Central Nervous System involvement by MM. * History of idiopathic pulmonary fibrosis, organizing pneumonia (e.g., bronchiolitis obliterans), drug-induced pneumonitis, or idiopathic pneumonitis.
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Conditions
The condition(s) this trial relates to.
As listed by the trial registrant
The condition terms exactly as the trial's registrant entered them.
How to take part
Only the study team decides who joins. These are the ways to reach them.
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The places running it
11 sites in 4 countries. The list below names each one and where it is.
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The official record
ClinicalTrials.gov lists the study team's own contact details, including names and phone numbers. We don't republish those.
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A doctor treating you
A doctor who knows your case can contact a study site on your behalf, and can tell you whether this study is worth pursuing at all.
Contacts and locations
Locations
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City Of Hope - Atlanta /ID# 280294
RECRUITINGNewnan, Georgia, 30265, United States
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City of Hope - Orange County Lennar Foundation Cancer Center /ID# 279067
RECRUITINGIrvine, California, 92618, United States
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City of Hope National Medical Center /ID# 280273
RECRUITINGDuarte, California, 91010, United States
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Colorado Blood Cancer Institute /ID# 280275
RECRUITINGDenver, Colorado, 80218, United States
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Hadassah Medical Center-Hebrew University /ID# 278865
RECRUITINGJerusalem, 91120, Israel
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Institute of Hematology and Blood Diseases Hospital /ID# 279208
RECRUITINGTianjin, Tianjin Municipality, 300020, China
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Moffitt Cancer Center /ID# 279068
RECRUITINGTampa, Florida, 33612, United States
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START Midwest /ID# 279035
RECRUITINGGrand Rapids, Michigan, 49546, United States
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Tel Aviv Sourasky Medical Center /ID# 279066
RECRUITINGTel Aviv, Tel Aviv, 6423906, Israel
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The Cancer Institute Hospital Of JFCR /ID# 279069
RECRUITINGKoto-ku, Tokyo, 135-8550, Japan
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The Chaim Sheba Medical Center /ID# 279065
RECRUITINGRamat Gan, Tel Aviv, 5265601, Israel
More trials for these conditions
Other studies related to the condition(s) this trial covers.
- Cheap blood count ratios eyed as window into Myeloma's inflammatory grip
- Can a t-cell engager rescue myeloma that outsmarted CAR-T?
- Can myeloma treatment work without steroids?
- Double-Drug attack on Hard-to-Treat lymphomas
- Banking blood and bone marrow to decode plasma cell disorders
- Which scan sees hidden myeloma better: PET or MRI?