A Phase 1/2 interventional study of HDP-101 in Multiple Myeloma and Plasma Cell Disorder, sponsored by Heidelberg Pharma AG. Recruiting at 24 sites in 5 countries. Open to participants aged 18 Years and older. Per ClinicalTrials.gov, last updated 2026-09-17.
Sponsored by Heidelberg Pharma AG · Phase 1/2, Interventional, and Treatment
Among 297 studies in Multiple Myeloma with a site in Germany — 51 open to participants now, 103 under way, 47 of them phase 3. Multiple Myeloma · Germany.
Among the 297 studies in Multiple Myeloma with a site in Germany, this one is the 178th largest by planned enrollment of the 263 interventional ones, is one of 22 that started in 2022, is one of 41 in phase 1/2, reaches primary completion later than 61 of the 101 other live ones, and was the 211th registered.
3,760 studies on the registry are indexed under Multiple Myeloma; 769 are open to participants now.
This study's planned enrollment of 78 is above the median of 41 across 3,005 interventional studies indexed under Multiple Myeloma.
Browse Multiple Myeloma studies →51 of the 297 studies in Multiple Myeloma with a site in Germany are open now, in 12 countries. Each count lists the studies.
Of the 584 Multiple Myeloma studies recruiting now, 429 (73%) set no upper age limit and 106 (18%) stop at 75 or younger; 36 take children under 18; 24 take healthy volunteers.
This study: 18 Years and older · all sexes · no healthy volunteers.
The full table on the hub →297 studies; the count open now beside each. This study's row is marked.
First in 1997; this study’s year is marked. 22 started in 2022.
Median enrollment 171 across the 263 interventional studies, 298 across the 32 observational. Of the 180 that completed or were terminated, 87 (48%) have results posted.
212 of 297 have an industry lead sponsor. The 10 most frequent:
Heidelberg Pharma AG is the lead sponsor of 9 studies on the registry; 1 is open to participants now.
Heidelberg Pharma AG has 1 study filed under Multiple Myeloma — fewer than ten, so there is no comparison to draw.
23 of the studies in Multiple Myeloma with a site in Germany that are under way reach primary completion within a year, 6 of them phase 3. Phase 3 first, then by date:
| Study | Primary completion |
|---|---|
| NCT05519085Phase 3CelgeneA Study to Evaluate Mezigdomide, Bortezomib and Dexamethasone (MEZIVd) Versus Pomalidomide, Bortezomib and Dexamethasone (PVd) in Participants With Relapsed or Refractory Multiple Myeloma (RRMM) | 2027-01-10 |
| NCT03319667Phase 3SanofiA Study to Investigate the Clinical Benefit of Isatuximab in Combination With Bortezomib, Lenalidomide and Dexamethasone in Adults With Newly Diagnosed Multiple Myeloma Not Eligible for Transplant | 2027-04-05 |
| NCT05455320Phase 3Janssen Research & Development, LLCA Study Comparing Talquetamab in Combination With Daratumumab or in Combination With Daratumumab and Pomalidomide Versus Daratumumab in Combination With Pomalidomide and Dexamethasone in Participants With Multiple Myeloma That Returns After Treatment or is Resistant to Treatment | 2027-07-30 |
| NCT05665140Phase 3University Hopsital Schleswig Holstein Campus LübeckExpression-linked and R-ISS-adapted Stratification for First Line Therapy in Multiple Myeloma Patients | 2027-08 |
| NCT05317416Phase 3PfizerStudy With Elranatamab Versus Lenalidomide in Patients With Newly Diagnosed Multiple Myeloma After Transplant | 2027-08-04 |
Among the 297 studies in Multiple Myeloma with a site in Germany, from their registry updates:
This study will assess the safety, tolerability, pharmacokinetics (PK) and the therapeutic potential of HDP-101 in patients with plasma cell disorders including multiple myeloma.
The study will consists of two parts: a Part 1 dose escalation phase and a Part 2a expansion phase for safety, tolerability, PK, PD, and clinical activity testing. The study will enroll subjects with relapsed/refractory MM or other plasma cell disorders expressing BCMA. An adaptive 2-parameter Bayesian logistic regression model (BLRM) for dose-escalation with overdose control will be used in the dose-escalation phase for determination of the MTD or the RP2D. Dose-expansion phase of the study aims to collect preliminary evidence of antitumor activity and to confirm the safety of the HDP-101 as a monotherapy.
Go through the criteria one by one — yes, no or not sure — and take the list to your doctor or the study team. Kept in this browser only.
Exclusion Criteria:
Underlined terms in the criteria open these too. Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.
The study doctor’s estimate of how long someone is likely to live. Criteria use it so that people can stay in the study long enough for it to answer its question.
A scale of how much an illness limits everyday activity. For people being assessed to join a study, scores run from 0 (fully active) to 4; lower is more active.
Studies most often ask for 0–1 or 0–2. Your doctor gives the score; the WHO scale uses the same steps. The full scale also has 5, which records death.
Relapsed: the illness came back after treatment had worked. Refractory: it did not respond to treatment, or stopped responding while still on it.
The amount of disease can be tracked with a defined measurement, so the study can see whether it shrinks or grows. It might be a tumour measured on a scan or, in some blood cancers such as myeloma, a marker measured in blood or urine.
The criteria or the study team say which measurement counts — having no tumour visible on a scan does not by itself rule you out.
Stem cell (bone marrow) transplants. Allogeneic uses cells from a donor; autologous uses your own cells, collected earlier and given back.
After a transplant from a donor, the donor’s immune cells attack the recipient’s body, often the skin, gut or liver.
Malignancy means cancer. Criteria about another or earlier malignancy ask whether you have had a different cancer, usually within a set number of years.
Some are commonly allowed, such as treated skin cancers other than melanoma and early cancers removed completely — check the exceptions this study lists.
The human immunodeficiency virus, which weakens the immune system.
Many studies now accept people whose HIV is controlled on treatment, judged by the viral load and the CD4 count. Check the limits this study sets.
Hepatitis B is a virus that infects the liver. These are separate tests: HBsAg positive usually means a current infection (a recent vaccination can briefly cause it too); total anti-HBc (HBcAb) positive means an infection now or in the past; HBV DNA measures how much virus is in the blood.
Some studies accept a past infection if HBV DNA is undetectable, sometimes with antiviral medicine during the study. Check what this study allows.
Hepatitis C is a virus that infects the liver. An HCV antibody test can stay positive after an infection has cleared (and is occasionally positive without one); an HCV RNA test shows whether the virus is there now.
After treatment, hepatitis C counts as cured when HCV RNA is still undetectable 12 weeks or more after the treatment ended. Studies often accept people cured this way.
Life expectancy
The study doctor’s estimate of how long someone is likely to live. Criteria use it so that people can stay in the study long enough for it to answer its question.
Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.
ECOG performance status
A scale of how much an illness limits everyday activity. For people being assessed to join a study, scores run from 0 (fully active) to 4; lower is more active.
Studies most often ask for 0–1 or 0–2. Your doctor gives the score; the WHO scale uses the same steps. The full scale also has 5, which records death.
Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.
Relapsed and refractory
Relapsed: the illness came back after treatment had worked. Refractory: it did not respond to treatment, or stopped responding while still on it.
Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.
Measurable disease
The amount of disease can be tracked with a defined measurement, so the study can see whether it shrinks or grows. It might be a tumour measured on a scan or, in some blood cancers such as myeloma, a marker measured in blood or urine.
The criteria or the study team say which measurement counts — having no tumour visible on a scan does not by itself rule you out.
Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.
Allogeneic and autologous transplant
Stem cell (bone marrow) transplants. Allogeneic uses cells from a donor; autologous uses your own cells, collected earlier and given back.
Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.
GVHD (graft-versus-host disease)
After a transplant from a donor, the donor’s immune cells attack the recipient’s body, often the skin, gut or liver.
Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.
Cancer (malignancy)
Malignancy means cancer. Criteria about another or earlier malignancy ask whether you have had a different cancer, usually within a set number of years.
Some are commonly allowed, such as treated skin cancers other than melanoma and early cancers removed completely — check the exceptions this study lists.
Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.
HIV
The human immunodeficiency virus, which weakens the immune system.
Many studies now accept people whose HIV is controlled on treatment, judged by the viral load and the CD4 count. Check the limits this study sets.
Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.
Hepatitis B tests
Hepatitis B is a virus that infects the liver. These are separate tests: HBsAg positive usually means a current infection (a recent vaccination can briefly cause it too); total anti-HBc (HBcAb) positive means an infection now or in the past; HBV DNA measures how much virus is in the blood.
Some studies accept a past infection if HBV DNA is undetectable, sometimes with antiviral medicine during the study. Check what this study allows.
Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.
Hepatitis C tests
Hepatitis C is a virus that infects the liver. An HCV antibody test can stay positive after an infection has cleared (and is occasionally positive without one); an HCV RNA test shows whether the virus is there now.
After treatment, hepatitis C counts as cured when HCV RNA is still undetectable 12 weeks or more after the treatment ended. Studies often accept people cured this way.
Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.
Participants will receive HDP-101 intravenously in a 21 day cycle until disease progression, intolerable toxicity, Investigator's discretion or patient withdrawal. During the phase 1 tolerability of different dose levels will be evaluated. During the phase 2a dose expansion part the recommended phase 2 dose (RP2D) of HDP-101 will be administered.
Drug: HDP-101
HDP-101 is available as lyophilized white powder for preparation of infusion.
Number of patients who experience dose-limiting toxicity (DLT) during the first cycle of treatment - Part 1 as defined in Clinical Study Protocol
Time frame: Up to Day 21 (from first dose)
Objective response rate (ORR)
Proportion of enrolled subjects who achieve a partial response (PR) or better, i.e. stringent complete response (sCR), complete response (CR), very good partial response (VGPR) and PR, according to the IMWG criteria.
Time frame: Through study completion, an average of 1 year
Assess the safety and tolerability of HDP-101
Number of patients with serious and non-serious adverse events grouped by system organ class and preferred terms based on Common Terminology Criteria for Adverse Events (CTCAE v 5.0) classification.
Time frame: Through study completion, an average of 1 year
To assess the anticancer activity of HDP-101 in terms of time-to-event (TTE)
Clinical efficacy of HDP-101 measured by Progression Free Survival (PFS) and Overall Survival (OS).
Time frame: Through study completion, an average of 1 year
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Plan to share: No
Started Feb 2022 (actual). Primary completion is estimated for Mar 2028, 73 months after the start.
Of 98 industry-sponsored phase 1/2 interventional studies under Multiple Myeloma, half reached primary completion within 64 months of starting (the median), counting those still running; a quarter within 42 and three quarters within 90. This study's planned 73 months is above that.
Counting every sponsor, half of 201 studies reached it within 65 months; a quarter within 44 and three quarters within 92.
How these figures are worked out, and which studies are left out of them.
Eligibility is decided by the study team. Share this record with your doctor or contact the team directly.
Contact study teamGet an email when the registry record changes — status, dates, results — or when someone posts here.
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Heidelberg Pharma AG