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Primary Immunodeficiency Disorders (PIDs)Phase 2NCT06549114

Leniolisib for Immune Dysregulation in PIDs

A Phase 2 study testing Leniolisib in people with Primary Immunodeficiency Disorders (PIDs), run by Pharming Technologies B.V. at 1 site in United States.

Completed

Finished. The study has ended and is not enrolling. Results may be posted on the official record.

Official record
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Trial summary

This study is an exploratory, non-randomized, open-label, within-patient dose escalation study. The primary objective is to assess safety and tolerability of leniolisib. Secondary objectives include assessments of PK/PD, and to explore clinical efficacy measures with administration of three different dose levels of… Read more about this study

Who is it for?
Ages 12 to 75 years
What is being tested?
Leniolisib
Type of treatment
Pill or oral medicine
Could I receive a placebo?
No, everyone receives an active treatment
How many people
13 participants
Where
1 siteUnited States
Study dates
21 Oct 2024to 23 Jun 2026
Phase
Phase 2
Are there results?
None posted in the registry

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 12 to 75 years
  • All sexes
  • No healthy volunteers
  • Child, Adult, Older adult

Who may be able to join

  • Subjects 12 to 75 years of age.
  • Diagnosed with a PID due to disease-causing pathogenic or likely pathogenic variant(s) in the following genes: SOCS1, PTEN, CTLA4, NFKB1 (only those variants leading to NFKB pathway activation), or FAS (germline or somatic), or diagnosed with RAS associated leukoproliferative disorder (and not juvenile myelomonocytic leukemia [JMML]) due to somatic variants in NRAS or KRAS.
  • Subjects must have 1 or more of the following:
  • One or more blood cytopenias related to the underlying PID defined as hemoglobin <10 g/dL, platelet count <100,000/µL, or neutrophil count <1000/µL
  • Splenomegaly evident by CT imaging with craniocaudal spleen measurement >10 cm
  • Lymphadenopathy evident by CT imaging with at least 1 measurable index lymph node (long axis >1.5 cm) as per Cheson methodology
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  • GLILD or other PID-related ILD with quantifiable CT chest imaging findings evident on baseline CT scan
  • At screening, vital signs.
  • Systolic blood pressure 80-139 mm Hg
  • Diastolic blood pressure 50-89 mm Hg
  • Pulse rate 50-110 bpm
  • Oxygen saturation 93-100%
  • Subjects or their legal representatives (for subjects under the age of 18 years) must be able to provide written informed consent.

Who cannot join

  • Subject has had a successful hematopoietic stem-cell transplant (HSCT).
  • Previous or concurrent use of immunosuppressive medication, such as:
  • Use of an mTOR inhibitor or a PI3Kδ inhibitor within 3 weeks prior to first dosing .
  • Rituximab or other B-cell depleting antibodies, belimumab, cyclophosphamide, or alemtuzumab within 6 months prior to first dosing.
  • Cyclosporine A, mycophenolate mofetil, 6-mercaptopurine, azathioprine, methotrexate, tacrolimus, ruxolitinib, or other JAK inhibitors within 3 weeks prior to first dosing.
  • Corticosteroids above 25 mg prednisone or equivalent per day within 2 weeks prior to first dosing.
Show all 25Show fewer
  • Other immunosuppressive agents expected to have a significant impact on immune cell number or function.
  • Abatacept is allowed during study if the subject has been receiving a stable dosing regimen for more than 3 months prior to first dosing.
  • Subject is receiving concurrent treatment with another investigational therapy or use of another investigational therapy less than 4 weeks or 5 half-lives (whichever is longer) prior to first dosing.
  • History of hypersensitivity to the study drug or to drugs of similar chemical classes.
  • Current use of medication known to be a strong inhibitor, or moderate or strong inducer, of isoenzyme P450 CYP3A.
  • Current use of medications that act as BCRP, OATP1B1, and OATP1B3 substrates.
  • Subject has a history or current electrocardiogram (ECG) abnormalities indicating a significant risk of safety for subjects participating in the study
  • History of acquired immunodeficiency diseases, including a positive HIV test result at screening.
  • Uncontrolled chronic or recurrent infectious disease (except those considered to be characteristic of a PID) or evidence of tuberculosis infection
  • Any surgical or medical condition which may jeopardize the subject in case of participation in the study, or might significantly alter the absorption, distribution, metabolism, or excretion of drugs.
  • A positive hepatitis B surface antigen, positive hepatitis B PCR, positive hepatitis C PCR, or positive hepatitis C antibody result at screening.
  • Administration of live vaccines starting from 6 weeks before first dose of study medication.
  • Subject has a previous diagnosis of lymphoma within 1 year of the first dose of study medication.
  • Subject has a history of malignancy (except lymphoma) within 3 years before the first dose of study medication, except for adequately treated cancers of the skin (basal or squamous cell) or carcinoma in situ of the uterine cervix.
  • Subject has uncontrolled post-transplant lymphoproliferative disease (PTLD)-like EBV related lymphoproliferative disease.
  • Donation or loss of 400 mL or more of blood within 8 weeks before the first dose.
  • Subject has had major surgery requiring hospitalization or radiotherapy within 4 weeks prior to the first dose or has a planned or expected major surgical procedure during the study period.
  • Pregnant or nursing (lactating) individuals,.
  • Individuals of child-bearing potential, unless they are using highly effective methods of contraception.

Trial locations and contacts

1 site in 1 country.

United States1 site
  • National Institute of Health

    Bethesda, Maryland, 20892

Other trials in United States

About this study

Official title: A Study to Assess Safety and Tolerability, and Explore Efficacy of Leniolisib for Immune Dysregulation in Primary Immunodeficiency Disorders

This study is an exploratory, non-randomized, open-label, within-patient dose escalation study. The primary objective is to assess safety and tolerability of leniolisib. Secondary objectives include assessments of PK/PD, and to explore clinical efficacy measures with administration of three different dose levels of leniolisib.

Read the detailed description

Patients ages 12-75 diagnosed with genetically defined PID disorders linked to PI3K signaling. This includes disorders caused by pathogenic variants in SOCS1, PTEN, CTLA4, NFKB1 (variants leading to NFKB pathway activation), FAS (germline or somatic), or RAS-associated leukoproliferative disorder caused by somatic variants in NRAS or KRAS (not juvenile myelomonocytic leukemia [JMML]). All subjects participating will receive leniolisib film-coated tablets (FCTs) with a planned dose regimen consisting of a starting dose of 10 mg twice daily (BID) for 4 weeks, followed by 30 mg BID for 4 weeks, and then 70 mg BID for 12 weeks. Leniolisib dose increase at the individual subject level will occur if no safety or tolerability issues have been identified by the Investigator that precludes the planned dose escalation.

Subjects not continuing leniolisib treatment outside of the current protocol will be followed up, with the EOS visit planned to occur approximately 28 days after last dose of leniolisib.

Being tested
Leniolisib
Medical subject headings
Primary Immunodeficiency Diseases

What participants receive

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

  • LeniolisibDrug

    Also called Joenja

    The doses selected will range from 10 to 70 mg twice daily (BID) (resulting in total daily doses ranging from 20 to 140 mg per day).

Study groups in NCT06549114
Study groupRoleWhat they receive
LeniolisibExperimentalAll subjects participating will receive Leniolisib film-coated tablets (FCTs) at a starting dose of 10 mg BID for 4 weeks, followed by 30 mg BID for 4 weeks, and then 70 mg BID for 12 weeks.
Receives: Drug: Leniolisib

What is being measured

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

  1. Number of Participants with Treatment-emergent adverse events (TEAEs), Serious Adverse Events (SAEs) , and Adverse Events (AEs)

    • To assess the number of AEs/SAEs and number of participants with AEs/SAEs

    Measured: From Baseline to the end of 20 weeks of Treatment

Secondary outcomes (26)
  1. To assess the PK of leniolisib in PID disorders linked to PI3K

    • PK parameters for leniolisib defined by Cmax

    Measured: From Baseline to the end of 20 weeks of Treatment

  2. To assess the PK of leniolisib in PID disorders linked to PI3K

    • PK parameters for leniolisib defined by Tmax

    Measured: From Baseline to the end of 20 weeks of Treatment

  3. To assess the PK of leniolisib in PID disorders linked to PI3K

    • PK parameters for leniolisib defined by t1/2

    Measured: From Baseline to the end of 20 weeks of Treatment

  4. To assess the PK of leniolisib in PID disorders linked to PI3K

    • PK parameters for leniolisib defined by AUC (0-t)

    Measured: From Baseline to the end of 20 weeks of Treatment

  5. To assess the impact of leniolisib on lymphocyte PI3K/AKT/mTOR pathway activity in PID disorders linked to PI3K

    • Percent change in pAKT and/or pS6 in B cells and/or T cells, under resting and stimulated conditions, at different dose levels of leniolisib relative to baseline pAKT/pS6 levels, as feasible

    Measured: From Baseline to the end of 20 weeks of Treatment

  6. To assess the impact of leniolisib on hemoglobin counts in PID disorders linked to PI3K

    • Hemoglobin over time

    Measured: From Baseline to the end of 20 weeks of Treatment

  7. To assess the impact of leniolisib on platelet counts in PID disorders linked to PI3K

    • Platelet count over time

    Measured: From Baseline to the end of 20 weeks of Treatment

  8. To assess the impact of leniolisib on absolute neutrophil counts in PID disorders linked to PI3K

    • Absolute neutrophil count over time

    Measured: From Baseline to the end of 20 weeks of Treatment

  9. To assess the clinical efficacy of leniolisib on PID-related ILD in PID disorders linked to PI3K

    • Change in CT evidence of GLILD or other PID-related ILD evaluated using Hartmann scoring methodology

    Measured: From Baseline to the end of 20 weeks of Treatment

  10. To assess the clinical efficacy of leniolisib on PFTs in PID disorders linked to PI3K

    • Change in forced expiratory volume 1 (FEV1)

    Measured: From Baseline to the end of 20 weeks of Treatment

  11. To assess the clinical efficacy of leniolisib on PFTs in PID disorders linked to PI3K

    • Change in forced vital capacity (FVC)

    Measured: From Baseline to the end of 20 weeks of Treatment

  12. To assess the clinical efficacy of leniolisib on PFTs in PID disorders linked to PI3K

    • Change in total lung capacity (TLC)

    Measured: From Baseline to the end of 20 weeks of Treatment

  13. To assess the clinical efficacy of leniolisib on PFTs in PID disorders linked to PI3K

    • Change in diffusing capacity (DLCO)

    Measured: From Baseline to the end of 20 weeks of Treatment

  14. To assess the clinical efficacy of leniolisib on lymphoproliferation in PID disorders linked to PI3K

    • Percent change from baseline in lymphadenopathy measured as the sum of product of diameters (SPD) in the index lesions selected per the Cheson methodology
    • Percent change from baseline in lymphadenopathy measured as SPD of measurable non-index lesions selected as per the Cheson methodology

    Measured: From Baseline to the end of 20 weeks of Treatment

  15. To assess the clinical efficacy of leniolisib on splenomegaly in PID disorders linked to PI3K

    • Percent change from baseline in splenomegaly measured by three-dimensional (3D) volume and bi-dimensional (2D) size of spleen

    Measured: From Baseline to the end of 20 weeks of Treatment

  16. To assess the impact of leniolisib on white blood cell counts in PID disorders linked to PI3K

    • White blood cell count over time

    Measured: From Baseline to the end of 20 weeks of Treatment

  17. To assess the impact of leniolisib on white blood cell counts in PID disorders linked to PI3K

    • Absolute monocyte count over time

    Measured: From Baseline to the end of 20 weeks of Treatment

  18. To assess the impact of leniolisib on white blood cell counts in PID disorders linked to PI3K

    • Absolute lymphocyte count over time

    Measured: From Baseline to the end of 20 weeks of Treatment

  19. To assess the impact of leniolisib on white blood cell counts in PID disorders linked to PI3K

    • Absolute eosinophil count over time

    Measured: From Baseline to the end of 20 weeks of Treatment

  20. To assess the impact of leniolisib on white blood cell counts in PID disorders linked to PI3K

    • Absolute basophil count over time

    Measured: From Baseline to the end of 20 weeks of Treatment

  21. To assess the impact of leniolisib on white blood cell counts in PID disorders linked to PI3K

    • CD4+ T cell count over time

    Measured: From Baseline to the end of 20 weeks of Treatment

  22. To assess the impact of leniolisib on white blood cell counts in PID disorders linked to PI3K

    • CD8+ T cell count over time

    Measured: From Baseline to the end of 20 weeks of Treatment

  23. To assess the impact of leniolisib on white blood cell counts in PID disorders linked to PI3K

    • Natural killer (NK) cell count over time

    Measured: From Baseline to the end of 20 weeks of Treatment

  24. To assess the impact of leniolisib on white blood cell counts in PID disorders linked to PI3K

    • B cell count over time

    Measured: From Baseline to the end of 20 weeks of Treatment

  25. To assess the impact of leniolisib on B cell and T cell phenotypic populations of interest in PID disorders linked to PI3K

    • Percentages of naïve B cells, CD21lo B cells and T regulatory cells over time

    Measured: From Baseline to the end of 20 weeks of Treatment

  26. To examine levels of CXCL13 and soluble IL-2Rα and assess the impact of leniolisib in PID disorders linked to PI3K

    • Levels of CXCL13 over time
    • Levels of soluble IL-2Rα over time

    Measured: From Baseline to the end of 20 weeks of Treatment

Timeline

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

  1. First posted12 Aug 2024
  2. Study start21 Oct 2024
  3. Primary completion23 Jun 2026
  4. Study completion23 Jun 2026

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
Masking
None (open label)
Enrolment
13 participants (actual)
IDs, dates and publications
ClinicalTrials.gov ID
NCT06549114
Sponsor's protocol ID
LE 7201
Status last verified
Oct 2026
First submitted
17 Jul 2024
Last updated
19 Oct 2026
Results posted
No
Data monitoring committee
Yes
FDA-regulated drug
Yes
FDA-regulated device
No
Individual data sharing
No

Publications

  • Hassan C, Ponstein Y, Hanssen R, Thorneloe KS, Marsh RA, Rao VK. Leniolisib reduced lymphoproliferative disease in murine autoimmune lymphoproliferative syndrome. J Hum Immun. 2025 Nov 17;2(1):e20250125. doi: 10.70962/jhi.20250125. eCollection 2026 Jan 5.

    PubMed 41608120

Questions about this trial

What is this clinical trial studying?

A Phase 2 study testing Leniolisib in people with Primary Immunodeficiency Disorders (PIDs), run by Pharming Technologies B.V. at 1 site in United States.

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 25 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: finished, as of the sponsor's last update on 19 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 1 site in United States. 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?

The study is completed, but results are not available in the source record. That does not mean the treatment did or did not work.

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?

Number of Participants with Treatment-emergent adverse events (TEAEs), Serious Adverse Events (SAEs) , and Adverse Events (AEs) (time frame: From Baseline to the end of 20 weeks of Treatment). 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 NCT06549114, 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 19 Oct 2026.

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