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Immune Thrombocytopenia (ITP)Phase 2NCT05086744

Basket Study to Assess Efficacy, Safety and PK of Iptacopan (LNP023) in Autoimmune Benign Hematological Disorders

A Phase 2 study testing Iptacopan in people with Immune Thrombocytopenia (ITP) and Cold Agglutinin Disease (CAD), run by Novartis Pharmaceuticals at 8 sites in 6 countries.

Terminated

Stopped early. The study ended before it was planned to and will not resume.

Official record
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Trial summary

The main purpose of this study was to evaluate the efficacy and safety of iptacopan in participants with autoimmune benign hematological disorders such as primary immune thrombocytopenia and primary cold agglutinin disease. Read more about this study

Who is it for?
Ages 18 to 120 years
What is being tested?
Iptacopan
Type of treatment
Pill or oral medicine
Could I receive a placebo?
No, everyone receives an active treatment
How many people
19 participants
Where
8 sitesin 6 countries
Study dates
21 Dec 2021to 17 May 2024
Phase
Phase 2
Are there results?
Yes, posted in the registrySummary in the doctors' view

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 120 years
  • All sexes
  • No healthy volunteers
  • Adult, Older adult

Who may be able to join

  • All Cohorts:
  • Written informed consent
  • Vaccination against Neisseria meningitidis and Streptococcus pneumoniae infections was required and vaccination against Haemophilus influenzae infection is recommended prior to the start of treatment.
  • Weight of at least 35 kg
  • Cohort 1 specific inclusion criteria:
  • Participants with a diagnosis of persistent or chronic primary ITP
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  • Participants must have received at least 1 unique prior therapy administered with the intention to treat ITP
  • Sustained thrombocytopenia
  • Cohort 2 specific inclusion criteria:
  • Participants with a diagnosis of primary CAD
  • Participants must have received at least 1 unique prior therapy administered with the intention to treat CAD
  • Laboratory evidence of ongoing hemolysis
  • Sustained anemia

Who cannot join

  • All cohorts:
  • Use of other investigational drugs at the time of enrollment, or within 5 half-lives of enrollment, or within 30 days, whichever is longer; or longer if required by local regulations
  • Past or concomitant use of medications prohibited by the protocol
  • Known or suspected hereditary or acquired complement deficiency
  • History of primary or secondary immunodeficiency, including a positive HIV test result
  • Chronic infection with Hepatitis B or C virus
Show all 22Show fewer
  • History of recurrent invasive infections caused by encapsulated organisms, including Neisseria meningitidis, Streptococcus pneumoniae, or Haemophilus influenzae
  • Presence or suspicion of any active infection within 14 days prior to first study drug administration.
  • Any medical condition deemed likely to interfere with the participant's participation in the study
  • Any malignant disease diagnosed within the past 5 years, with the exception of localized non-melanoma skin cancer, in situ cervical cancer, or, for CAD, a low-grade lymphoproliferative disorder.
  • History of bone marrow/hematopoietic stem cell or solid organ transplantation.
  • Women of child-bearing potential, defined as all women physiologically capable of becoming pregnant, unless they are using effective methods of contraception during dosing of investigational drug and for 1 week after last iptacopan dose
  • Active severe bleeding or history of intracranial hemorrhage.
  • Liver disease, or liver injury as indicated by abnormal liver function tests.
  • Severe concurrent comorbidities of unstable medical conditions.
  • Cohort 1 specific exclusion criteria:
  • Secondary ITP, as may arise in the setting of certain autoimmune disorders, immunodeficiency syndromes, infections, malignancies, and drug treatments
  • No ITP-directed background therapy permitted, with the exception of either a thrombopoietin receptor agonist or low-dose corticosteroid, as long as stable dosage for at least 4 weeks prior to first iptacopan dose
  • Abnormal coagulation screening labs
  • Cohort 2 specific exclusion criteria:
  • Secondary cold agglutinin syndrome, as may arise in the setting of certain infections, autoimmune disorders, and malignancies (with the exception of a low-grade lymphoproliferative disorder)
  • No CAD-directed background therapy permitted

Trial locations and contacts

8 sites in 6 countries.

8 sites in 6 countries

Spain3 sites
  • Novartis Investigative Site

    Barcelona, Catalonia, 08035

  • Novartis Investigative Site

    Madrid, 28009

  • Novartis Investigative Site

    Murcia, 30008

Other trials in Spain

United States1 site
  • Massachusetts General Hospital

    Boston, Massachusetts, 02114

Other trials in United States

Germany1 site
  • Novartis Investigative Site

    Essen, 45147

Other trials in Germany

Italy1 site
  • Novartis Investigative Site

    Milan, MI, 20122

Other trials in Italy

South Korea1 site
  • Novartis Investigative Site

    Seoul, 06351

Other trials in South Korea

United Kingdom1 site
  • Novartis Investigative Site

    London, W12 0HS

Other trials in United Kingdom

About this study

Official title: An Open-label, Multi-center, Phase 2 Basket Study to Assess Efficacy, Safety and Pharmacokinetics of Iptacopan (LNP023) in Participants With Autoimmune Benign Hematological Disorders

The main purpose of this study was to evaluate the efficacy and safety of iptacopan in participants with autoimmune benign hematological disorders such as primary immune thrombocytopenia and primary cold agglutinin disease.

Read the detailed description

This was an open-label, single-arm (within each cohort), multi-center, non-confirmatory basket study to assess the efficacy, safety and pharmacokinetics of iptacopan in participants with autoimmune benign hematological disorders. The study was set up as a basket study to allow inclusion of new cohorts (indications). The study included 2 cohorts: primary immune thrombocytopenia (ITP) and primary cold agglutinin disease (CAD). Participants in Cohort 1 (ITP) were stratified in two groups according to high/low complement activation (i.e., based on sC5b-9 level at screening). No additional cohorts were added during the study.

The study consisted of a screening period, a 12-week treatment period (Part A), a washout (for responders)/follow-up (for non-responders) period after Part A, and, for responders only, an additional treatment extension period for up to 24 months (Part B). Non-responders who had signs of clinical benefit according to the Investigator's assessment could also continue treatment with iptacopan in Part B. The washout period prior to the start of part B lasted up to 4 weeks.

Being tested
Iptacopan
Keywords
LNP023, Iptacopan, Immune thrombocytopenia, Cold agglutinin disease, Autoimmune benign hematological disorders
Medical subject headings
Purpura, Thrombocytopenic, Idiopathic, Anemia, Hemolytic, Autoimmune

What participants receive

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

  • IptacopanDrug

    Also called Investigational new drug, company code: LNP023

    Iptacopan 200 mg BID given orally (capsule)

Study groups in NCT05086744
Study groupRoleWhat they receive
Iptacopan 200 mg BIDExperimentalIptacopan 200 mg twice daily (BID) in participants with primary ITP and primary CAD
Receives: Drug: Iptacopan

What is being measured

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

  1. Cohort 1 (ITP): Number of Participants With a Clinically Meaningful Response

    A study participant with ITP was considered a responder if all the below criteria were met:

    1. Platelet count of ≥50 k/μL sustained for at least 2 consecutive weeks during the main, 12-week treatment part
    2. Absence of rescue therapy or prohibited medications to treat ITP
    3. Lack of treatment discontinuation

    Measured: Up to 12 weeks (Part A)

  2. Cohort 2 (CAD): Number of Participants With a Clinically Meaningful Response

    A study participant with CAD was considered a responder if all the below criteria were met:

    1. Hemoglobin level increase of ≥1.5 g/dL above baseline sustained for at least 2 consecutive weeks during the main, 12-week treatment part
    2. Absence of rescue therapy or prohibited medications to treat CAD
    3. Lack of treatment discontinuation

    Measured: Baseline, up to 12 weeks (Part A)

Secondary outcomes (17)
  1. Cohort 1 (ITP): Time to First Platelet Count ≥50 k/μL

    The first time that a participant had a platelet count ≥50 k/μL after first dose of study treatment. Time to the first response was assessed for responders only.

    Measured: Up to 12 weeks (Part A)

  2. Cohort 2 (CAD): Time to First Hemoglobin Level ≥1.5 g/dL Above Baseline

    The first time that a participant had a hemoglobin level ≥1.5 g/dL above baseline after first dose of study treatment. Time to the first response was assessed for responders only.

    Measured: Baseline, up to 12 weeks (Part A)

  3. Cohort 1 (ITP): Duration of Time During Which Platelet Count Remains ≥50 k/μL Without the Use of Rescue Therapy

    The duration of response corresponds to the duration of time during which a participant's platelet count remains ≥50 k/μL without the use of rescue therapy. The duration of response was considered as cumulative if there were non-continuous periods of response. Duration of response was analyzed for responders only.

    Measured: Up to 12 weeks (Part A)

  4. Cohort 2 (CAD): Duration of Time During Which Hemoglobin Level Remains ≥1.5 g/dL Above Baseline Without the Use of Rescue Therapy

    The duration of response corresponds to the duration of time during which a participant's hemoglobin level remained ≥1.5 g/dL above baseline without the use of rescue therapy. The duration of response was considered as cumulative if there were non-continuous periods of response. Duration of response was analyzed for responders only.

    Measured: Baseline, up to 12 weeks (Part A)

  5. Cohort 1 (ITP): Magnitude of Platelet Count Increase From Baseline

    The magnitude of increase in platelet count compared to baseline was derived for each participant at each visit and time point. Best response across all visits is presented (highest value).

    The following categories were used: absolute platelet counts increase <50, ≥50 and <100, ≥100 and <150, and ≥150 k/uL.

    This endpoint is only applicable to participants without rescue therapy in the treatment period.

    Measured: Baseline, up to 12 weeks (Part A)

  6. Cohort 2 (CAD): Magnitude of Hemoglobin Increase From Baseline

    The magnitude of increase in hemoglobin level compared to baseline was derived for each participant at each visit and time point. Best response across all visits is presented (highest value).

    The following categories were used: Hb increase from baseline by <1, ≥1 and <1.5, ≥1.5 and <2, and ≥2 g/dL.

    This endpoint is only applicable to participants without rescue therapy in the treatment period.

    Measured: Baseline, up to 12 weeks (Part A)

  7. Cohort 1 (ITP): Need for Rescue Therapy During Part A

    Rescue therapy was defined as any therapy with ITP indication that started on or after Day 1.

    Rescue therapy, if indicated, could be initiated at the Investigator's discretion. From Day 1 onwards, if rescue therapy was needed before response criteria were met, the participant was treated as a non-responder. Conversely, use of rescue therapy after the primary endpoint was met, would not impact the response status with respect to that endpoint.

    For ITP, rescue therapy generally consisted of corticosteroids, intravenous immunoglobulins or anti-Rho(D) immunoglobulin and may had been indicated in case of worsening thrombocytopenia and/or signs or symptoms of bleeding.

    Measured: Up to 12 weeks (Part A)

  8. Cohort 2 (CAD): Need for Rescue Therapy During Part A

    Rescue therapy was defined as any therapy with CAD indication that started on or after Day 1.

    Rescue therapy, if indicated, could be initiated at the Investigator's discretion. From Day 1 onwards, if rescue therapy was needed before response criteria were met, the participant was treated as a non-responder. Conversely, use of rescue therapy after the primary endpoint was met, would not impact the response status with respect to that endpoint.

    For CAD, rescue therapy generally consisted of plasmapheresis, intravenous immunoglobulins (IVIG) and/or red blood cell transfusions and may had been indicated in case of worsening anemia and/or critical hemolysis.

    Measured: Up to 12 weeks (Part A)

  9. Cohort 2 (CAD): Change From Baseline in Lactate Dehydrogenase (LDH)

    LDH was measured in serum samples to assess the effect of treatment with iptacopan on relevant disease biomarkers.

    Measured: Baseline, up to 12 weeks (Part A)

  10. Cohort 2 (CAD): Change From Baseline in Total Bilirubin

    Total bilirubin was measured in serum samples to assess the effect of treatment with iptacopan on relevant disease biomarkers.

    Measured: Baseline, up to 12 weeks (Part A)

  11. Cohort 2 (CAD): Change From Baseline in Reticulocyte Count

    Reticulocyte count was measured in blood samples to assess the effect of treatment with iptacopan on relevant disease biomarkers.

    Measured: Baseline, up to 12 weeks (Part A)

  12. Cohort 2 (CAD): Change From Baseline in Haptoglobin

    Haptoglobin was measured in serum or plasma samples to assess the effect of treatment with iptacopan on relevant disease biomarkers.

    Measured: Baseline, up to 12 weeks (Part A)

  13. Cohort 1 and 2: Number of Participants With AEs and SAEs During the On-treatment Period in Part A and B

    Number of participants with AEs (any adverse events regardless of seriousness) and serious adverse events (SAEs), including changes from baseline in vital signs, electrocardiograms and laboratory results qualifying and reported as AEs.

    AE grades to characterize the severity of the AEs were based on the Common Terminology Criteria for Adverse Events (CTCAE) version 5.0. For CTCAE v5.0, Grade 1 = mild; Grade 2 = moderate; Grade 3 = severe; Grade 4 = life-threatening; Grade 5 = death related to AE.

    The on-treatment period is defined from the day of first administration of study drug up to 7 days after the last administration of study drug.

    Measured: From first dose of study treatment to 7 days after last dose, up to approximately 43 weeks (Cohort 1) and 103 weeks (Cohort 2)

  14. Cohort 1 and 2: Maximum Observed Plasma Concentration (Cmax) of Iptacopan

    Pharmacokinetic (PK) parameters were calculated based on iptacopan plasma concentrations by using non-compartmental methods. Cmax is defined as the maximum (peak) observed concentration following a dose.

    Measured: Pre-dose, 0.5, 2, 4 and 6 hours after iptacopan administration on Day 15 and Day 57 of Part A

  15. Cohort 1 and 2: Time to Maximum Observed Plasma Concentration (Tmax) of Iptacopan

    PK parameters were calculated based on iptacopan plasma concentrations by using non-compartmental methods. Tmax is defined as the time to reach maximum (peak) observed concentration following a dose. Actual sampling times were considered for the calculation of PK parameters.

    Measured: Pre-dose, 0.5, 2, 4 and 6 hours after iptacopan administration on Day 15 and Day 57 of Part A

  16. Cohort 1 and 2: Area Under the Plasma Concentration-time Curve From Time Zero to the Time of the Last Quantifiable Concentration (AUClast) of Iptacopan

    PK parameters were calculated based on iptacopan plasma concentrations by using non-compartmental methods. The linear trapezoidal method was used for area under the curve (AUC) calculation.

    Measured: Pre-dose, 0.5, 2, 4 and 6 hours after iptacopan administration on Day 15 and Day 57 of Part A

  17. Cohort 1 and 2: Trough Plasma Concentration (Ctrough) of Iptacopan

    Ctrough is defined as the concentration reached immediately before the next dose is administered. All drug concentrations below the lower limit of quantification were treated as zero for the calculation of PK parameters.

    Measured: Pre-dose on Day 15, 29 and 57 of Part A

Timeline

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

  1. First posted21 Oct 2021
  2. Study start21 Dec 2021
  3. Primary completion20 Sep 2023
  4. Study completion17 May 2024

Why it stopped: Business decision

Resources

More details

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

Study design
Study type
Interventional
Phase
Phase 2
Primary purpose
Treatment
Allocation
Not applicable
Intervention model
Single group
Model description
This is a basket study with different Cohorts.
Masking
None (open label)
Enrolment
19 participants (actual)
IDs, dates and publications
ClinicalTrials.gov ID
NCT05086744
Sponsor's protocol ID
CLNP023L12201
Other IDs
2021-002039-40
Status last verified
Oct 2025
First submitted
28 Sep 2021
Last updated
16 Oct 2025
FDA-regulated drug
Yes
FDA-regulated device
No
Individual data sharing
Yes: Novartis is committed to sharing with qualified external researchers, access to patient level data and supporting clinical documents from applicable studies. These requests are reviewed and approved by an independent review panel on the basis of scientific merit. All data provided is anonymized to respect the privacy of patients who have participated in the trial in line with applicable laws and regulations. This trial data availability is according to the criteria and process described on www.clinicalstudydatarequest.com

Publications

  • Roth A, Barcellini W, Ademokun C, Jang J, Lozano ML, Ferreiras DV, Pascual-Izquierdo C, Chitnis S, Matviykiv S, Vitaliti A, Chen C, Katsanou V, Chawla R, Al-Samkari H. Iptacopan for Immune Thrombocytopenia and Cold Agglutinin Disease: A Global Phase 2 Basket Clinical Trial. Am J Hematol. 2026 Feb;101(2):242-254. doi: 10.1002/ajh.70147. Epub 2025 Dec 9.

    PubMed 41366634

Questions about this trial

What is this clinical trial studying?

A Phase 2 study testing Iptacopan in people with Immune Thrombocytopenia (ITP) and Cold Agglutinin Disease (CAD), run by Novartis Pharmaceuticals at 8 sites in 6 countries.

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 13 inclusion and 22 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: stopped early, as of the sponsor's last update on 16 Oct 2025. Status can change between updates, so confirm with the study contact before making plans.

Where is the study taking place?

The record lists 8 sites in Spain, United States, Germany, Italy, South Korea and 1 more country. 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.

What does this phase mean?

Phase 2 studies give the treatment to a larger group to see whether it has the intended effect and to keep checking safety.

Not every study follows the same path, and some studies (observational studies, device studies) have no phase.

Are results available for this study?

Yes. Results are posted in the registry (first posted 19 Mar 2025). A summary is in the For doctors view, and the full results are on ClinicalTrials.gov.

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

The record lists no contact. The official record names the sponsor, who can be asked directly. AzTrials does not enrol participants or take referrals.

What does the primary outcome measure?

Cohort 1 (ITP): Number of Participants With a Clinically Meaningful Response (time frame: Up to 12 weeks (Part A)). The study lists 2 primary outcomes in all. It is what the study was designed to measure, not a finding.

Where can I read the original study information?

On the ClinicalTrials.gov record for NCT05086744, which also lists 1 linked publication.

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 16 Oct 2025.

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