ClinicalTrials.gg
RecruitingNCT06889948DAMOCLESUpdated Sep 16, 2026

The Effect of Daratumumab in Patients With Monoclonal Gammopathy of Renal Significance (MGRS) in Finland

A Phase 2 interventional study of Daratumumab in Kidney Failure, Paraproteinemias and Glomerulonephritis, sponsored by Helsinki University Central Hospital. Recruiting at 1 site in Finland. Open to participants aged 18 Years and older. Per ClinicalTrials.gov, last updated 2026-09-16.

Sponsored by Helsinki University Central Hospital · Phase 2, Interventional, and Treatment

From the registry’s dates

  • Registered 1 year after the study started (first participant enrolled Jan 2024, registered Feb 2025).
  • Started Jan 2024; still recruiting 2 years 9 months later.
Phase
Phase 2
Study type
Interventional
Enrollment
30
Allocation
Non-randomized
Ages
18 Years and older
Sex
All
01

Study summary

The goal of this clinical trial is to learn if drug daratumumab works to treat kidney diseases other than AL-amyloidosis that fall under the category of monoclonal gammopathy of renal significance (MGRS).

The main questions it aims to answer are:

Does daratumumab have an effect on the patients' renal function or the amount of proteinuria?

Does daratumumab have an effect on the hematological endpoints evaluated by minimal residual disease (MRD) and the difference between involved and uninvolved free light chain (dFLC)?

Also changes in quality of life (according to EORTC QLQ-C30) and mechanism of complement system activation are evaluated. The number of patiets with partial or very good partial hematological remission and the number of patients with adverse events related to daratumumab are also recorded.

02

Conditions studied

  • Kidney Failure
  • Paraproteinemias
  • Glomerulonephritis

Keywords

  • Monoclonal gammopathy of renal significance
  • daratumumab
03

In context

Renal Insufficiency

1,409 studies on the registry are indexed under Renal Insufficiency; 143 are open to participants now.

This study's planned enrollment of 30 is below the median of 40 across 1,058 interventional studies indexed under Renal Insufficiency.

Browse Renal Insufficiency studies →

Lead sponsor

Helsinki University Central Hospital is the lead sponsor of 311 studies on the registry; 61 are open to participants now.

Counted across the registry records on this site, refreshed daily.

04

Who can participate

Ages eligible
18 Years and older
Sexes eligible
All
Accepts healthy volunteers
No

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.

Inclusion criteria

  1. Males or females ≥ 18 years of age
  2. Subject has provided prior to initiation of the study or subject's legally acceptable representative has provided informed consent prior to the study when the subject has any kind of condition that, in the opinion of the investigator, may compromise the ability of the subject to give written informed consent.
  3. Renal confirmed MGRS-disease

    • Renal biopsy must not be older than 3 months before informed consent. However, if renal biopsy is older than 3 mo and the study team is convinced that major histological changes have not occurred, a biopsy older than that can exceptionally be accepted.
    • Renal transplant patients are allowed
  4. Amount of proteinuria ≥ 500 mg/24 h OR ≥ 20 ml/min prior to the study
  5. Previous anticlonal treatment is allowed if deemed ineffective

Exclusion criteria

Exclusion Criteria:

  1. Myeloma or systemic AL amyloidosis (smoldering myeloma sized plasma cell clone is allowed when in association with a documented MGRS condition and AHL amyloidosis and AH amyloidosis are included)
  2. Cancer that requires treatment,
  3. MGRS related to B-cell malignant disorders,
  4. Known infection, active infection (subjects with hepatitis C that achieve a sustained virologic response after antiviral therapy are allowed), or infection (subjects with hepatitis B surface antigen or core antibody that achieve sustained virologic response (PCR negativity in HBVNh) with antiviral therapy are permitted with a requirement for regular monitoring for reactivation for the duration of treatment on the study),
  5. Pregnancy or breastfeeding,
  6. Cyclophosphamide within 6 months of enrollment, or oral high-dose prednisone or equivalent within 6 weeks of enrollment;

    • prednisone or its equivalent at a dosage of ≤10 mg daily for a condition unrelated to MGRS (e.g. asthma or gout) allowed.
    • mycophenolate mofetil (MMF), calcineurin inhibitors (CNI) or azathioprine treated patients are eligible if proteinuria is not improving or if kidney function is declining despite treatment with these medications. Once therapy with daratumumab started, these medications need to be discontinued unless they are used as medication due to renal transplantation.
  7. In patients who previously received rituximab, reconstitution of B cells (CD19 normalized, Ly-B-CD19 lab.code 8329) required.
  8. Inability to use daratumumab and to comply with the study protocol as assessed by treating nephrologist and/or hematologist (e.g. severe psychiatric illness, severe lung disease, known allergy to daratumumab)
Terms in these criteria, in plain language(7)

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.

Informed consent

Before you join, the study team explains what taking part involves — its purpose, what happens, the risks and possible benefits — and answers your questions, so you can decide freely. Consent is usually recorded on a form (the informed consent form, ICF) signed by you or, where the law allows, by someone legally authorised to decide for you.

You can keep asking questions during the study, you are told of new information that matters, and you can choose to leave at any time.

Biopsy and archival tissue

A biopsy takes a small piece of tissue to examine. “Archival tissue” is a sample already taken, for example at diagnosis, and kept by the hospital.

Whether a stored sample will do depends on when it was taken, how much there is and what the study needs. Ask whether the study accepts your stored sample or needs a new biopsy.

GFR and eGFR (kidney filtering)

GFR (glomerular filtration rate) is how much blood the kidneys filter each minute. It is usually estimated from a blood test — eGFR, by formulas such as CKD-EPI or MDRD — and some studies ask for it to be measured directly instead. Usually given in mL/min/1.73 m².

Check the method, the units and the minimum the study states. A value of 90 or above is in the normal-or-high range, but kidney damage can show in other tests too.

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.

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.

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.

Immunosuppression

A weakened immune system. It can come from an illness, such as HIV or some blood cancers, or from medicines that turn the immune system down, for example after an organ transplant or for an autoimmune disease; steroids at higher doses count.

Read whether the line is about a condition or about medicines, and which medicines and doses it means.

05

Study design

Phase
Phase 2
Primary purpose
Treatment
Allocation
Non-randomized
Intervention model
Parallel assignment
Masking
None (open label)
Enrollment
30 participants (estimated)

Study arms

  • Active comparator
    Daratumumab as a single agent therapy

    Daratumumab

    Drug: Daratumumab

  • Active comparator
    Daratumumab combined with stem cell transplantation

    Daratumumab in combination with stem cell transplantation

    Drug: Daratumumab

Interventions

  • All patients will receive either fixed-dose daratumumab as a single agent therapy or fixed-dose daratumumab combined with stem cell transplantation.

06

What researchers measure

Primary outcomes

  1. Rate of complete renal remission or partial renal remission and proteinuria and eGFR at EOT.

    Complete renal remission (proteinuria \<500 mg/d and \<15% decline in baseline eGFR) Partial renal remission (\>50% reduction in 24-h proteinuria and \< 30% decline in eGFR)

    Time frame: Through study completion, an average of 12 to 18 months

Secondary outcomes

  1. Rate of complete renal remission or partial renal remission and proteinuria and eGFR after 6 cycles of daratumumab.

    Complete renal remission (proteinuria \<500 mg/d and \<15% decline in baseline eGFR) Partial renal remission (\>50% reduction in 24-h proteinuria and \< 30% decline in eGFR)

    Time frame: At the end of daratumumab treatment cycle 6 (each cycle is 28 days)

  2. Rate of negativity of bone marrow minimal residual disease (MRD) after 6 and 12 cycles of daratumumab.

    Time frame: At the end of cycle 6 (each cycle is 28 days) and through study completion, an average of 12 to 18 months

  3. Number of patients with complement dysregulation-mediated renal damage caused by paraprotein.

    Time frame: Through study completion, an average of 12 to 18 months

  4. Number of patients in end-stage renal disease or with eGFR decline > 50 %.

    Time frame: Through study completion, an average of 12 to 18 months

  5. Number of patients with proteinuria decline < 25 %.

    Time frame: Through study completion, an average of 12 to 18 months

  6. Number of patients with complete or partial or very good partial hematological remission

    Time frame: Through study completion, an average of 12 to 18 months

  7. Number of patients with serious adverse events (SAE)

    Time frame: Through study completion, an average of 12 to 18 months

  8. Number of patients with significant adverse events (AE)

    Time frame: Through study completion, an average of 12 to 18 months

07

Study locations

1 of 1 sites recruiting
08

References and documents

Individual participant data

Plan to share: Undecided

No publications or documents are linked to this record.

09

Timeline

Tracking since Sep 25, 2026
ElapsedEstimatedEstimated, not yet reachedSimilar studies: half by the dot; the band is the middle halfHalf of similar studies reached it by the dot; the band is the middle half, from a quarter to three quarters

Started Jan 2024 (actual). Primary completion is estimated for Jun 2027, 41 months after the start.

Of 26 phase 2 interventional studies under Renal Insufficiency, half reached primary completion within 30 months of starting (the median), counting those still running; a quarter within 13 and three quarters within 34. This study's planned 41 months is above that.

How these figures are worked out, and which studies are left out of them.

Registered
Feb 14, 2025
First posted
Mar 21, 2025
StartActual
Jan 19, 2024
Primary completionEst.
Jun 2027
CompletionEst.
Jun 2027
Last update
Sep 16, 2026
What these dates mean
Start.
When the first participant enrolled; while estimated, when the study expects to open to recruitment.
Primary completion.
When the last participant was examined or treated to collect data for the study's main question, its primary outcome. A study that stopped early gives the date its data collection stopped.
Completion.
When the last participant's last visit took place, for every outcome, secondary ones and side effects included: the end of the study. Often later than primary completion, sometimes the same day.
Actual and Est.
Actual means the registry says the date has happened. Est. (estimated) is a date the sponsor plans or expects. It can still move, and the sponsor is expected to change it to actual once it has passed.
No changes since tracking began. The registry record was last updated on Sep 16, 2026, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
10

Registry details

Key details

Study ID
NCT06889948
Collaborators
Janssen, L.P. - Investigator Initiated Studies Program
Responsible party
Minna Seppälä (MD, Helsinki University Central Hospital) — Principal investigator
First posted
Mar 21, 2025
Start date
Jan 19, 2024
Primary completion
Jun 2027 (estimated)
Completion
Jun 2027 (estimated)
Last update
Sep 16, 2026

Study contacts

Minna Seppälä, MD
Contact
minna.seppala@hus.fi
+358 50 427 1087
Kati Kaartinen, PhD
Contact
kati.kaartinen@hus.fi

Oversight

Data monitoring committee
No
FDA-regulated drug
No
FDA-regulated device
No
View the source record on ClinicalTrials.gov ↗

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Studies of the drug tested here: Daratumumab

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