AzTrials
AzTrials

Complement 3 GlomerulopathyROUTE-C3GNCT07598448

A Study of Complement 3 Glomerulopathy (C3G) Patients Treated With Iptacopan Through an Early Access Program in Spain

An observational study of Complement 3 Glomerulopathy, run by Novartis Pharmaceuticals at 2 sites in Spain.

Recruiting

Looking for participants now. Contact the study team or a site below to ask about taking part.

Sites and contacts
Official record
Search all trials

Trial summary

This study aims to characterize the patient profiles and the clinical experience of iptacopan treatment in adult patients with C3G treated through an early access program (EAP) in Spain. Read more about this study

Who is it for?
Ages 18 to 100 years
Conditions the study is for
Complement 3 Glomerulopathy
How many people
35 participants
Where
2 sitesSpain
Study dates
22 Sep 2026to 15 Dec 2026
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 to 100 years
  • All sexes
  • No healthy volunteers
  • Adult, Older adult

Study population: Adult patients with a diagnosis of C3G who have received at least one dose of iptacopan through an EAP from 01 October 2020 through 30 June 2025.

Who may be able to join

  • Adult patients (≥18 years).
  • Biopsy-confirmed C3G.
  • Patients who have received at least one dose of iptacopan through an EAP from October 2020 to June 2025.

Who cannot join

  • 1. Patients treated with iptacopan through an EAP for indications other than C3G.

Trial locations and contacts

2 sites in 1 country. Contact the study team or a site near you to ask about taking part.

Novartis Pharmaceuticals contact

+41613241111

novartis.email@novartis.com

Novartis Pharmaceuticals contact

Spain2 sites, 2 recruiting
  • Novartis Investigative Site

    Córdoba, 14004

    Recruiting
  • Novartis Investigative Site

    Madrid, 28041

    Recruiting

Other trials in Spain

About this study

Official title: Clinical Experience With Iptacopan in Adult Patients With Complement 3 Glomerulopathy (C3G): A Multicenter, Observational, Retrospective Study of Patients Treated Through an Early Access Program in Spain

This study aims to characterize the patient profiles and the clinical experience of iptacopan treatment in adult patients with C3G treated through an early access program (EAP) in Spain.

Keywords
Complement 3 Glomerulopathy, C3G, Iptacopan, Factor B inhibition, Alternative Complement Pathway, Early Access Program
Medical subject headings
Glomerulonephritis, Membranoproliferative

What participants receive

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

Study groups in NCT07598448
Study groupRoleWhat they receive
Iptacopan CohortAdult patients with C3G who received iptacopan through an EAP in Spain.

What is being measured

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

  1. Baseline Demographics

    Measured: Baseline

  2. Height

    Measured: Baseline

  3. Weight

    Measured: Baseline

  4. Blood Pressure

    Systolic and diastolic blood pressure.

    Measured: Baseline

  5. Number and Percentage of Patients by Clinical Characteristic

    Clinical characteristics include:

    • Kidney status
    • History of dialysis
    • Presence of edema
    • Comorbidities
    • C3G histology subtype
    • Previous medication
    • Vaccination status
    • Receipt of antibiotic prophylaxis in addition to vaccination
    • History of severe infections

    Measured: Baseline

  6. Duration of Antibiotic Prophylaxis

    Measured: Baseline, Months 3, 6, 9, 12, 18, 24, 30, and 36

  7. Number of Hospitalizations due to Severe Infection Before Iptacopan Initiation

    Measured: Baseline

  8. Age at C3G Diagnosis

    Measured: Baseline

  9. Number and Percentage of Patients by Clinical Features at First C3G Diagnosis

    Clinical features include:

    • Clinical presentation (nephrotic, nephritic, isolated non-nephrotic proteinuria, asymptomatic urinary abnormalities)
    • Presence of pathogenic variants in complement-related genes
    • Presence of autoantibodies against complement components

    Measured: Baseline

  10. Age at Last Kidney Transplantation Before Iptacopan Initiation

    Measured: Baseline

  11. Number of Kidney Transplants Before Iptacopan Initiation

    Measured: Baseline

  12. Number and Percentage of Patients by Clinical Features of Last Kidney Transplant Before Iptacopan Initiation

    Clinical features include:

    • Previous recurrence with kidney failure
    • Kidney donor type
    • Highly sensitized (yes/no)
    • Immediate graft function
    • Type of induction therapy
    • Type of maintenance immunosuppressive (IS) therapy
    • Kidney transplant rejection episode and type of rejection

    Measured: Baseline

  13. Duration of Cold Ischemia for the Last Kidney Transplant Before Iptacopan Initiation

    Measured: Baseline

  14. Post-Kidney Transplant Estimated Glomerular Filtration Rate (eGFR)

    Measured: Baseline

  15. Number and Percentage of Patients by Type of Biopsy Performed to Confirm Recurrence of C3G After Kidney Transplant

    Measured: Baseline

  16. Duration Between Last Kidney Transplant and Biopsy Confirmed C3G Recurrence

    Measured: Baseline

  17. eGFR at Last Post-transplant C3G Recurrence

    Measured: Baseline

  18. Serum Albumin Concentration at Last Post-transplant C3G Recurrence

    Measured: Baseline

  19. Urine Protein-Creatine Ratio (UPCR) From First-Morning Void (FMV) at Last Post-transplant C3G Recurrence

    Measured: Baseline

  20. Proteinuria-24h at Last Post-transplant C3G Recurrence

    Total protein excretion from 24-hour collection.

    Measured: Baseline

  21. Serum Complement Component 3 (C3) Concentration at Last Post-transplant C3G Recurrence

    Measured: Baseline

Secondary outcomes (42)
  1. UPCR FMV During Iptacopan Treatment

    Measured: Baseline, Months 3, 6, 9, 12, 18, 24, 30, and 36

  2. UPCR-24h During Iptacopan Treatment

    UPCR from 24-hour collection.

    Measured: Baseline, Months 3, 6, 9, 12, 18, 24, 30, and 36

  3. Proteinuria-24h During Iptacopan Treatment

    Total protein excretion from 24-hour collection.

    Measured: Baseline, Months 3, 6, 9, 12, 18, 24, 30, and 36

  4. Urine Albumin-to-Creatinine Ratio (UACR) FMV During Iptacopan Treatment

    Measured: Baseline, Months 3, 6, 9, 12, 18, 24, 30, and 36

  5. UACR-24h During Iptacopan Treatment

    UACR from 24-hour collection.

    Measured: Baseline, Months 3, 6, 9, 12, 18, 24, 30, and 36

  6. Albuminuria-24h During Iptacopan Treatment

    Total albumin excretion from 24-hour collection.

    Measured: Baseline, Months 3, 6, 9, 12, 18, 24, 30, and 36

  7. Serum Albumin Concentration During Iptacopan Treatment

    Measured: Baseline, Months 3, 6, 9, 12, 18, 24, 30, and 36

  8. Serum Creatinine Concentration During Iptacopan Treatment

    Measured: Baseline, Months 3, 6, 9, 12, 18, 24, 30, and 36

  9. eGFR During Iptacopan Treatment

    Measured: Baseline, Months 3, 6, 9, 12, 18, 24, 30, and 36

  10. Difference Between Post- and Pre-Iptacopan Treatment eGFR Slopes

    Measured: Baseline, Months 3, 6, 9, 12, 18, 24, 30, and 36

  11. Number and Percentage of Patients With Kidney Failure

    Measured: Months 3, 6, 9, 12, 18, 24, 30, and 36

  12. Number and Percentage of Patients With a Kidney Transplant During Follow-up

    Measured: Months 3, 6, 9, 12, 18, 24, 30, and 36

  13. Number and Percentage of Patients Who Initiate Dialysis During Follow-up

    Measured: Months 3, 6, 9, 12, 18, 24, 30, and 36

  14. Red Blood Cells (RBC) Count per High Power Field (HPF) During Iptacopan Treatment

    Measured: Baseline, Months 3, 6, 9, 12, 18, 24, 30, and 36

  15. Number and Percentage of Patients by Intensity of C3 Deposit in Direct Immunofluorescence (DIF) During Iptacopan Treatment

    DIF intensity:

    • 0 (negative)
    • +1 (mild)
    • +2 (moderate)
    • +3 (strong)

    Measured: Baseline, Months 3, 6, 9, 12, 18, 24, 30, and 36

  16. Number and Percentage of Patients by Type of Antibody Used for DIF at Each Biopsy During Iptacopan Treatment

    Measured: Baseline, Months 3, 6, 9, 12, 18, 24, 30, and 36

  17. Number and Percentage of Patients by Presence of Globally Sclerotic Glomeruli and Glomeruli With Crescents at Each Biopsy During Iptacopan Treatment

    Measured: Baseline, Months 3, 6, 9, 12, 18, 24, 30, and 36

  18. Percentage of Globally Sclerotic Glomeruli and Glomeruli With Crescents at Each Biopsy During Iptacopan Treatment

    Measured: Baseline, Months 3, 6, 9, 12, 18, 24, 30, and 36

  19. Number and Percentage of Patients by Degree of Interstitial Fibrosis/Tubular Atrophy (IF/TA) at Each Biopsy During Iptacopan Treatment

    Degree of IF/TA categories:

    • None
    • Mild (<25%)
    • Moderate (25-50%)
    • Severe (>50%)

    Measured: Baseline, Months 3, 6, 9, 12, 18, 24, 30, and 36

  20. Number and Percentage of Patients by Presence of Arteriosclerosis or Arteriolosclerosis at Each Biopsy During Iptacopan Treatment

    Measured: Baseline, Months 3, 6, 9, 12, 18, 24, 30, and 36

  21. Number and Percentage of Patients by Light Microscopy Pattern at Each Biopsy During Iptacopan Treatment

    Light microscopy patterns:

    • Membranoproliferative glomerulonephritis (MPGN)
    • Diffuse endocapillary glomerulonephritis (GN)
    • Mesangial proliferative GN
    • Diffuse sclerosing GN

    Measured: Baseline, Months 3, 6, 9, 12, 18, 24, 30, and 36

  22. Number and Percentage of Patients by Presence of Double Contours at Each Biopsy During Iptacopan Treatment

    Measured: Baseline, Months 3, 6, 9, 12, 18, 24, 30, and 36

  23. Number and Percentage of Patients by Presence of Leukocyte Infiltration at Each Biopsy During Iptacopan Treatment

    Measured: Baseline, Months 3, 6, 9, 12, 18, 24, 30, and 36

  24. Serum C3 Concentration During Iptacopan Treatment

    Measured: Baseline, Months 3, 6, 9, 12, 18, 24, 30, and 36

  25. Serum Complement Component 4 (C4) Concentration During Iptacopan Treatment

    Measured: Baseline, Months 3, 6, 9, 12, 18, 24, 30, and 36

  26. Serum Soluble Membrane Attach Complex (sC5b-9) Concentration During Iptacopan Treatment

    Measured: Baseline, Months 3, 6, 9, 12, 18, 24, 30, and 36

  27. Total Complement Function Assay (CH50) Concentration During Iptacopan Treatment

    Measured: Baseline, Months 3, 6, 9, 12, 18, 24, 30, and 36

  28. Daily Iptacopan Dose During Iptacopan Treatment

    Measured: Baseline, Months 3, 6, 9, 12, 18, 24, 30, and 36

  29. Number of Missed or Delayed Doses During Iptacopan Treatment

    Measured: Months 3, 6, 9, 12, 18, 24, 30, and 36

  30. Number and Percentage of Patients With Missed or Delayed Doses During Iptacopan Treatment

    Measured: Months 3, 6, 9, 12, 18, 24, 30, and 36

  31. Number and Percentage of Patients Who Discontinued Iptacopan Treatment

    Measured: Months 3, 6, 9, 12, 18, 24, 30, and 36

  32. Number and Percentage of Patients by Reason for Iptacopan Treatment Discontinuation

    Measured: Months 3, 6, 9, 12, 18, 24, 30, and 36

  33. Time to Iptacopan Treatment Discontinuation

    Measured: Months 3, 6, 9, 12, 18, 24, 30, and 36

  34. Number and Percentage of Patients by Type of Concomitant Therapies

    Measured: Baseline, Months 3, 6, 9, 12, 18, 24, 30, and 36

  35. Treatment Dose of Concomitant Treatment

    Measured: Baseline, Months 3, 6, 9, 12, 18, 24, 30, and 36

  36. Number and Percentage of Patients on the Maximum Tolerated Dose of Concomitant Treatment: Renin-angiotensin System (RAS) Blockade

    Measured: Baseline, Months 3, 6, 9, 12, 18, 24, 30, and 36

  37. Number and Percentage of Patients by Reason for Stopping Concomitant Treatment

    Measured: Months 3, 6, 9, 12, 18, 24, 30, and 36

  38. Number and Percentage of Patients With Adverse Events of Special Interest (AESI)

    AESIs include infections by encapsulated bacteria, thyroid abnormality, testicular abnormality, hypersensitivity reaction, malignancy, and thrombocytopenia.

    Measured: Baseline, Months 3, 6, 9, 12, 18, 24, 30, and 36

  39. Number and Percentage of Patients With Severe AESI

    AESI include infections by encapsulated bacteria, thyroid abnormality, testicular abnormality, hypersensitivity reaction, malignancy, and thrombocytopenia.

    Infections are categorized as severe if present with any of the following: fever with shivers/chills; headache with fever; fever with rash; fever with chest pain and cough; fever with breathlessness/fast breathing; fever with high heart rate; headache with nausea/vomiting; headache with stiff neck/back; confusion; body aches with flu-like symptoms; clammy skin; eyes sensitive to light.

    Measured: Baseline, Months 3, 6, 9, 12, 18, 24, 30, and 36

  40. Number and Percentage of Patients Hospitalized due to an AESI

    AESIs include infections by encapsulated bacteria, thyroid abnormality, testicular abnormality, hypersensitivity reaction, malignancy, and thrombocytopenia.

    Measured: Baseline, Months 3, 6, 9, 12, 18, 24, 30, and 36

  41. Length of Stay in Hospital

    Measured: Baseline, Months 3, 6, 9, 12, 18, 24, 30, and 36

  42. Number and Percentage of Patients who Die During Iptacopan Treatment

    Measured: Baseline, Months 3, 6, 9, 12, 18, 24, 30, and 36

Timeline

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

  1. First posted20 May 2026
  2. Study start22 Sep 2026
  3. Primary completion15 Dec 2026 (estimated)
  4. Study completion15 Dec 2026 (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
35 participants (estimated)
IDs, dates and publications
ClinicalTrials.gov ID
NCT07598448
Sponsor's protocol ID
CLNP023B1ES01
Acronym
ROUTE-C3G
Status last verified
Oct 2026
First submitted
14 May 2026
Last updated
7 Oct 2026
Results posted
No
Individual data sharing
No

Questions about this trial

What is this clinical trial studying?

An observational study of Complement 3 Glomerulopathy, run by Novartis Pharmaceuticals at 2 sites in Spain.

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: looking for participants now, as of the sponsor's last update on 7 Oct 2026. Status can change between updates, so confirm with the study contact before making plans.

Where is the study taking place?

The record lists 2 sites in Spain. Whether a site is taking part right now should be confirmed with that site. See every site.

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 Novartis Pharmaceuticals (+41613241111, novartis.email@novartis.com), or a site near the patient. AzTrials does not enrol participants or take referrals.

What does the primary outcome measure?

Baseline Demographics (time frame: Baseline). The study lists 21 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 7 Oct 2026.

Free account

Keep searching with a free account

You’ve used your 3 free searches for this session. Log in or create a free AzTrials account to keep searching clinical trials and save the ones you want to follow.

Create a free accountLog in