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Relapse Multiple MyelomaGEM-BELACOMBOSNCT07637526

Study to Evaluate Efficacy and Safety of Belantamab-based Combinations for Relapsed Multiple Myeloma

An observational study of Relapse Multiple Myeloma, run by PETHEMA Foundation.

Not yet recruiting

Opening soon. The study is approved but enrolment has not started yet. Sites may already take enquiries.

Sites and contacts
Official record
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Trial summary

The goal of this retrospective observational study is to characterize multiple myeloma (MM) patients (by collecting demographics, disease characteristics and treatment history data) treated in first or second relapse with belantamab mafodotin combinations under compassionate use conditions. Read more about this study

Who is it for?
Ages 18 years and older
Conditions the study is for
Relapse Multiple Myeloma
What is being tested?
Belantamab mafodotin, Bortezomib and Dexamethasone
Type of treatment
Injection or infusion
How many people
100 participants
Where
No sites listed yet
Study dates
1 Jun 2026to 31 Dec 2027
Phase
Observational
Are there results?
Not yet: the study is under way

Key requirements

Who can take part, as listed by the sponsor. Only the study team can confirm whether you are eligible, so take this list to your doctor.

  • Ages 18 years and older
  • All sexes
  • Adult, Older adult

Study population: Adult patients with Multiple Myeloma treated under compassionate use with combinations of Belantamab Mafodotin at first or second relapse, or refractory disease, not being in fourth or more lines of treatment.

Who may be able to join

  • Confirmed diagnosis of relapsed/refractory MM.
  • Having received at least one dose of a belantamab mafodotin combination (BVd or BPd) under compassionate use conditions as treatment for a first or second relapse.
  • Patients ≥18 years of age at the start of treatment with the belantamab mafodotin combination (BVd or BPd) under compassionate use conditions.

Who cannot join

  • Any patient who has received a belantamab mafodotin combination (BVd or BPd) under compassionate use conditions in fourth line of treatment or later will be excluded from the study.

Trial locations and contacts

No sites are listed yet. Contact the study team or a site near you to ask about taking part.

Carmen López-Carrero contact

+34916 26 62 32

carmen@fundacionpethema.es

About this study

Official title: Retrospective Observational Study to Evaluate the Effectiveness and Safety of Belantamab Mafodotin-based Combinations (Belantamab Mafodotin, Bortezomib, Dexamethasone [BVd] or Belantamab Mafodotin, Pomalidomide, Dexamethasone [BPd]) Used as Compassionate Use in Patients With Multiple Myeloma in First or Second Relapse

The goal of this retrospective observational study is to characterize multiple myeloma (MM) patients (by collecting demographics, disease characteristics and treatment history data) treated in first or second relapse with belantamab mafodotin combinations under compassionate use conditions.

Read the detailed description

This retrospective observational study will collect data from MM patients at first or second relapse to evaluate the response rates under belantamab mafodotin-based therapeutic schedules as salvage therapy.

Data from participants either treated with belantamab mafodotin+bortezomib+dexamethasone [BVd] or belantamab mafodotin+pomalidomide+dexamethasone [BPd] schedules will be evaluated. Data collection will include the following data:

  • Sociodemographics (demographic data, disease status and clinical chracteristics).
  • Medical history (MM diagnosis, disease characteristics and history of prior treatment with anti-MM therapies).
  • Treatment with BVd or BPd (overall response rate, duration of response, progression-free survival at diagnosis, progression-free survival at relapse, duration of the treatment, overall survival, side effects, infections and concomitant treatments during the treatment with belantamab-based schedules).
Being tested
Belantamab mafodotin, Bortezomib, Dexamethasone, Pomalidomide
Keywords
belantamab mafodotin

What participants receive

What participants receive. In a randomised study each person is assigned to one group by chance.

  • Belantamab mafodotinDrug

    All participants evaluated in this study must have received this drug as salvage therapy in first or second relapse. Doses, dose reductions, increased spacing between doses and number of total infusions will be recorded.

  • BortezomibDrug

    Participants in BVd arm must have received this drug in combination with belantamab mafodotin in first or second relapse. Doses, dose reductions, increased spacing between doses and number of total infusions will be recorded.

  • DexamethasoneDrug

    All participants evaluated in this study must have received this drug as salvage therapy in first or second relapse. Doses, dose reductions, increased spacing between doses and number of total infusions will be recorded.

  • PomalidomideDrug

    Participants in BPd arm must have received this drug in combination with belantamab mafodotin in first or second relapse. Doses, dose reductions, increased spacing between doses and number of total infusions will be recorded.

Study groups in NCT07637526
Study groupRoleWhat they receive
Belantamab mafodotin+Bortezomib+dexamethasone (BVd)Participants receiving belantamab and dexametahsone plus the proteasome inhibitor Bortezomib as salvage therapy in first or second MM relapse.
Receives: Drug: Belantamab mafodotin; Drug: Bortezomib; Drug: Dexamethasone
Belantamab mafodotin+Pomalidomide-dexamethason (BPd)Participants receiving belantamab and dexametahsone plus the inmunomadulatory drug Pomalidomide as salvage therapy in first or second MM relapse.
Receives: Drug: Belantamab mafodotin; Drug: Dexamethasone; Drug: Pomalidomide

What is being measured

The primary outcome is the main question the study is designed to answer.

  1. Patient year of birth

    Measured in date (year)

    Measured: 18 months

  2. Patient sex

    Measured in male vs female

    Measured: 18 months

  3. Patient weight

    Measured in kilograms

    Measured: 18 months

  4. Disease diagnosis date

    Measured in date (dd/mm/yyyy)

    Measured: 18 months

  5. Disease Interational Score System status at diagnosis

    Developed in 2005 by the International Myeloma Working Group (IMWG), it uses two readily available blood tests (serum β2 microglobulin (Sβ2M) and serum albumin) to classify patients into three stages:

    Stage I: Sβ2M < 3.5 mg/L; serum albumin ≥ 3.5 g/dL. Stage II: Sβ2M < 3.5 mg/L; serum albumin < 3.5 g/dL; or β2M 3.5 to 5.5 mg/L, irrespective of serum albumin.

    Stage III: Sβ2M > 5.5 mg/L.

    Measured: 18 months

  6. Disease type of MM (secretory or oligosecretory)

    Defined as secretory (when immunoglobulines are detectable in the patient's serum and/or urine) or oligosecretory (when inmunoglobulines are below the treshold shown next).

    Secretory treshold definition: M-protein≥1 gr/dL, or U-PEP > 200 mg/24 hours or involved free light chain≥ 100 mg/L.

    Measured: 18 months

  7. Disease type of immunoglobulin

    Measures the type of immunoglobuline secreted by MM tumour cells (IgG, IgA, IgD, IgE or IgM)

    Measured: 18 months

  8. Disease ECOG status

    The ECOG Performance Status Scale describes a patient's level of functioning in terms of their ability to care for themself, daily activity, and physical ability (walking, working, etc.).

    Grades:

    0: Fully active, able to carry on all pre-disease performance without restriction

    1. Restricted in physically strenuous activity but ambulatory and able to carry out work of a light or sedentary nature, e.g., light house work, office work
    2. Ambulatory and capable of all selfcare but unable to carry out any work activities; up and about more than 50% of waking hours
    3. Capable of only limited selfcare; confined to bed or chair more than 50% of waking hours
    4. Completely disabled; cannot carry on any selfcare; totally confined to bed or chair
    5. Dead

    Measured: 18 months

  9. Disease extramedullar disease at relapse

    Extramedullary disease is defined as an aggressive form of multiple myeloma characterized by the presence of soft-tissue plasmacytomas that result from hematogenous spread

    Measured: 18 months

  10. Disease presentation of plasma cell leukemia

    Plasma cell leukemia is a rare and aggressive variant of myeloma characterized by the presence of circulating plasma cells; diagnosis is based upon the percentage (≥20%) and absolute number (≥2 × 109/L) of plasma cells in peripheral blood. This outcome aims to annotate if the particpiant has a canonical MM (between 10% and 19% of clonal plasma cells in bone marrow) or the rare leukemized variant of MM, which is also known as plasma cell leukemia (≥20% clonal plasma cells).

    Measured: 18 months

  11. Disease high-risk

    This outcome aims to annotate if the participant has high-risk MM.

    High-risk MM can be measured by a) beta 2-microglobulin (Sβ2M) levels, or by b) tumour genetic alterations:

    1. High-risk is considered when Sβ2M>=5.5mg/L (if creatinin <1.2mg/dL).
    2. High-genetic risk in MM (Avet-Loiseau H J Clin Oncol 2025) is defined as the presence of any of the following:
    • Deletion of 17p in >20% of sorted plasma cells
    • TP53 mutation
    • Biallelic deletion of 1p32
    • 2 alterations of the following: t(4;14), t(14;16) or t(14,20); or Gain/amplification of 1q; or monoallelic del 1p32

    Measured: 18 months

  12. Disease kidney function pre-belantamab infusion by creatinine clearance

    This outcome aims to annotate if the participant shows kideny disfunction or impairment at any time during treatment. Kidney or renal impairment is defined as creatinine clearance below 40 mL/min due to myeloma.

    Measured: 18 months

  13. Disease kidney function pre-belantamab infusion by serum creatinine

    This outcome aims to annotate if the participant shows kideny disfunction or impairment at any time during treatment. Kidney or renal impairment can also be evaluated by serum creatinine and this happens when serum creatinine is above 2 mg/dL due to myeloma.

    Measured: 18 months

  14. Disease kidney failure at disease progression

    This outcome aims to annotate if the participant shows kidney failure at disease progression. Kidney failure is defined as an estimated glomerular filtration rate (eGFR) below 15 mL/min.

    Measured: 18 months

  15. Disease tumoral load pre-belantamab infusion by circulating cells

    Tumoral load refers to the amount of disease detected at any time. It will be measured by the number of circulating tumour cells in peripheral blood (cells/L).

    Measured: 18 months

  16. Disease tumoral load pre-belantamab infusion by serum beta-2-microglobulin

    Tumoral load refers to the amount of disease detected at any time. It will be measured by serum beta-2-microglobulin levels (mg/L)

    Measured: 18 months

  17. Disease presence of lytic lesions

    This outcome aims to annotate if the participant shows bone lytic lesions at any time during treatment. Lytic lesions are lesions that replace normal bone or with a vast proportion showing a lower density or attenuation than the normal bone. These lesions are characterized either by the replacement of bone matrix by other types of tissue including soft tissue, fluid or fat. These lytic lesions are caused by MM cells and are detected and accounted by radiography.

    Measured: 18 months

  18. Disease previous anti-MM treatments

    Annotation of the treatments received by each patient before the treatment with belantamab combinations analyzed in this study.

    Measured: 18 months

  19. Disease number of previous anti-MM treatments and treatment response

    Annotation of the number of treatments received by each patient before the treatment with belantamab combinations analyzed in this study, and what patients' duration of response was (defined in months).

    Measured: 18 months

  20. Disease first line treatment

    First line treatment refers to the treatment the patient received at diagnosis (in de novo MM status)

    Measured: 18 months

  21. Disease date of first relapse

    Measured in date (dd/mm/yyyy)

    Measured: 18 months

  22. Disease date of second line treatment (if applies)

    Measured in date (dd/mm/yyyy)

    Measured: 18 months

  23. Disease date of second relapse (if applies)

    Measured in date (dd/mm/yyyy)

    Measured: 18 months

  24. Patient comorbidities

    This outcome will annotate the patients' medical history before administering any belantamab combination including:

    • Lung disease
    • Heart disease
    • Diabetes
    • Other

    Measured: 18 months

Secondary outcomes (9)
  1. Type of treatment (BVd or BPd)

    Defined as which belantamab combination the patient received (Belantamab+Bortezomib+dexamethasone [BVd], or Belantaman+Pomalidomide+dexamethaspone [BPd])

    Measured: 18 months

  2. Disease comorbidities

    The appearance of any of the following will be annotated:

    • Hypercalcemia
    • Kidney failure
    • Anemia
    • Bone problems, such as osteoporosis, bone pain, and fractures

    Measured: 18 months

  3. Date of drug infusion/administration

    Measured in dd/mm/yyyy for each drug of the belantamab combinations

    Measured: 18 months

  4. Drug dose

    The dose of each drug of the belantamab combinations will be annotated

    Measured: 18 months

  5. Dose reduction

    Dose reductions for each drug of the belantamab combinations will be annotated

    Measured: 18 months

  6. Reason for dose reduction

    The reason for dose reductions for each drug of the belantamab combinations will be annotated

    Measured: 18 months

  7. Drug delay

    The time frame (in days) of any drug delay between drug doses for each drug of the belantamab combinations will be annotated

    Measured: 18 months

  8. New interval between doses

    The new time frame (in days) between doses of any drug for each drug of the belantamab combinations will be annotated

    Measured: 18 months

  9. Survival data, Overall response rate

    Defined as the percentage of patients with confirmed partial response or better (i.e., partial response, very good partial response, complte remission, and strict complete response), according to International Myeloma Working Group 2016 or later criteria, if possible, and clinician's notes otherwise.

    Measured: 18 months

Timeline

From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.

  1. First posted9 Jun 2026
  2. Study start1 Jun 2026 (estimated)
  3. Primary completion31 Dec 2027 (estimated)
  4. Study completion31 Dec 2027 (estimated)

Resources

More details

For doctors and researchers: how the study is designed, who runs it, and its registry IDs.

Study design
Study type
Observational
Observational model
Cohort
Time perspective
Retrospective
Enrolment
100 participants (estimated)
IDs, dates and publications
ClinicalTrials.gov ID
NCT07637526
Sponsor's protocol ID
GEM-BELACOMBOS
Acronym
GEM-BELACOMBOS
Status last verified
May 2026
First submitted
27 May 2026
Last updated
24 Jun 2026
Results posted
No
Data monitoring committee
No
FDA-regulated drug
Yes
FDA-regulated device
No
Individual data sharing
No

Questions about this trial

What is this clinical trial studying?

An observational study of Relapse Multiple Myeloma, run by PETHEMA Foundation.

The full registered description is in the About this study section and the official record.

Who may be eligible to take part?

The sponsor lists 3 inclusion and 1 exclusion criteria. Eligibility is decided by the study team after screening, so read the full criteria and contact a listed site.

Is this clinical trial currently recruiting?

The record says: opening soon, as of the sponsor's last update on 24 Jun 2026. Status can change between updates, so confirm with the study contact before making plans.

What are the possible benefits and risks?

They depend on the study and the treatment, and no study can promise a benefit. The study team explains the known risks during informed consent, before anyone joins; the record itself does not list them.

Are results available for this study?

This study is still under way. Results are not available in the source record yet.

How can a doctor refer a patient or contact the research team?

Contact Carmen López-Carrero (+34916 26 62 32, carmen@fundacionpethema.es), or a site near the patient. AzTrials does not enrol participants or take referrals.

What does the primary outcome measure?

Patient year of birth (time frame: 18 months). The study lists 24 primary outcomes in all. It is what the study was designed to measure, not a finding.

Where can I read the original study information?
Does a listing mean the treatment is approved or proven to work?

No. A listing means the study is registered. It does not show that the treatment is safe, works, or is approved by a regulator.

How often is this information updated?

AzTrials copies changed records from ClinicalTrials.gov every night and reloads the whole registry every week. The sponsor last updated this record on 24 Jun 2026.

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