ClinicalTrials.gg
CompletedNCT06325943CIDPRITUpdated Mar 26, 2024

Rituximab in Chronic Inflammatory Demyelinating Polyradiculoneuropathy

A Phase 3 interventional study of Rituximab and Placebo in Polyradiculoneuropathy, Chronic Inflammatory Demyelinating, sponsored by Istituto Clinico Humanitas. Completed at 1 site in Italy. Open to participants aged 18 Years and older. Per ClinicalTrials.gov, last updated 2024-03-26.

Sponsored by Istituto Clinico Humanitas · Phase 3, Interventional, and Treatment

From the registry’s dates

  • Registered 4 years 1 month after the study started (first participant enrolled Apr 2019, registered May 2023).

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Phase
Phase 3
Study type
Interventional
Enrollment
37
Allocation
Randomized
Ages
18 Years and older
Sex
All
01

Where this study stands

Counted across the records on this site · 2026-11-13

Among 28 studies in Polyradiculoneuropathy, Chronic Inflammatory Demyelinating with a site in Italy — 11 open to participants now, 15 under way, 8 of them phase 3. Polyradiculoneuropathy, Chronic Inflammatory Demyelinating · Italy.

Enrollment
23rd of 26
37 · median 113
Started
2019
with 1 other
Phase 3
16 of 28
6 open now
Registered
14th of 28
by date
Lead sponsor
3 of 28
Istituto Clinico Humanitas

Among the 28 studies in Polyradiculoneuropathy, Chronic Inflammatory Demyelinating with a site in Italy, this one is the 23rd largest by enrollment of the 26 interventional ones that give a count, is one of 2 that started in 2019, is one of 16 in phase 3, and was the 14th registered.

Polyradiculoneuropathy, Chronic Inflammatory Demyelinating

137 studies on the registry are indexed under Polyradiculoneuropathy, Chronic Inflammatory Demyelinating; 51 are open to participants now.

Browse Polyradiculoneuropathy, Chronic Inflammatory Demyelinating studies →

Open to participants now

11 of the 28 studies in Polyradiculoneuropathy, Chronic Inflammatory Demyelinating with a site in Italy are open now. Recruiting first, the newest first:

6 more — sign in →

All 11 open studies →

A study can be open while its sites in Italy have not opened yet or have stopped. Only those recruiting at a site in Italy →

Who these studies take

Of the 36 Polyradiculoneuropathy, Chronic Inflammatory Demyelinating studies recruiting now, 24 (67%) set no upper age limit and 9 (25%) stop at 75 or younger; 4 take children under 18; 2 take healthy volunteers.

This study: 18 Years and older · all sexes · no healthy volunteers.

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02

Study summary

Randomized double-blind controlled study of rituximab versus placebo in patients with chronic inflammatory demyelinating polyradiculoneuropathy (CIDP) on chronic treatment with immunoglobulins. The primary objective of the study is to determine whether rituximab treatment is effective in preventing the disease from getting worse after stopping immunoglobulin treatment for six months in patients with CIDP. The secondary objective is to evaluate whether treatment with rituximab can improve the response to therapy compared to placebo in patients treated with immunoglobulins and whether it can allow to delay the mean time of worsening after discontinuation of immunoglobulin therapy.

Exploratory objectives are the correlation between response to rituximab therapy and the clinical form of CIDP and the presence of antibody reactivity against node of Ranvier antigens. Intervention will be Rituximab or placebo, 1 g by intravenous infusion on day 1 and 15 after randomization and concomitant treatment for 6 months with intravenous or subcutaneous immunoglobulin at the same dosage as before randomization.

03

Conditions studied

  • Polyradiculoneuropathy, Chronic Inflammatory Demyelinating
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. Subject is ≥ 18 years of age at Visit 1 (screening)
  2. Subject has a documented diagnosis of definite or probable CIDP according to the European Federation of Neurological Societies/Peripheral Nerve Society (EFNS/PNS) criteria 2010 (Joint Task Force of the EFNS and the PNS, 2010)
  3. Subject has an immunoglobulin-dependency confirmed by clinical examination in the 12 months before screening and documented in medical history (ie, that a decrease or withdrawal of immunoglobulin was attempted that resulted in a decrease in function)
  4. If the immunoglobulin dependency has been confirmed within 12 to 6 months before screening, the subject has to be on a stable dosage (not more than ±20% deviation) for subcutaneous immunoglobulin (SCIg) or intravenous immunoglobulin (IVIg) and a fixed interval for at least 3 months of either treatment, ie, once or twice weekly ±2 days for SCIg or every 2 to 8 weeks ±5 days for intravenous immunoglobulin, respectively, for stability in functioning between dosing. If the immunoglobulin dependency has been confirmed within 6 months before Screening Visit, the stable dose and fixed interval is not required
  5. Subject can take at the maximum dosage equivalent to 12.5 mg/day of prednisone or 25 mg on alternate day or pulsed 400 mg/monthly of methylprednisolone as far as the dosage has been maintained stable (± 20%) in the previous 6 months. This treatment should be maintained unchanged during the six month treatment period and the six-month follow-up period
  6. Subject has adequate peripheral venous access
  7. Female subjects of must have a negative serum pregnancy test and agree to use a highly effective method of , during the study and for a period 12 months after their last dose of study drug.
  8. Male subject with a partner of childbearing potential must be willing to use an highly effective method of birth control when sexually active during the study and for 12 months after the final administration of rituximab/placebo.

Exclusion criteria

Exclusion Criteria:

  1. Subject has a current diagnosis or has a history of Type 1 or Type 2 diabetes mellitus
  2. Subject with immunoglobulin M (IgM) paraproteinemia with anti-myelin associated glycoprotein antibodies (MAG)
  3. Subject has Multifocal Motor Neuropathy with conduction block (MMN)
  4. Patient with a CIDP relapse or significant worsening of symptoms within 6 months of randomization
  5. Clinical or known evidence of associated medical conditions that might cause neuropathy including but not limited to connective tissue disease, Lyme disease, cancer (with the exclusion of benign skin cancer), Castleman's disease and systemic lupus erythematosus, malignant plasma cell dyscrasia, lymphoma, osteosclerotic myeloma, Polyneuropathy, organomegaly, endocrinopathy, monoclonal protein, and skin changes (POEMS), or agents that may lead to neuropathy eg, amiodarone therapy
  6. Female who is pregnant or lactating
  7. Subjects has any medical condition (acute or chronic illness) or psychiatric condition that, in the opinion of the investigator, could harm the subject or would compromise the subject's ability to participate in the study
  8. Subject with congestive heart failure or a moderate or higher impairment of cardiac function
  9. Subject has renal impairment defined as: serum creatinine > 1.4 mg/dL for females and 1.5 mg/dL for males
  10. Subject has an absolute leukocyte count \<4000/mm3, lymphocyte count \< 800/mm3, count \<100,000/mm3
  11. Subject has liver impairment defined as total or conjugated >1.5 × (ULN) range, unless in context of Gilbert's syndrome; (AST), alanine aminotransferase (ALT) >3 × ULN range; alkaline phosphatase (AP) >1.5 × ULN range; gamma glutamyl-transferase (GGT) >3 × ULN range
  12. Subject has a history of chronic alcohol or drug abuse within the previous 12 months
  13. Subject has a history of ongoing chronic infections including but not limited to (HIV), , , active or latent tuberculosis or is tested positive for HIV (anti-HIV1 or anti-HIV2 antibodies) hepatitis B (HBsAG positive or HBcAb positive without HBsAb) or hepatitis C (HCV antibodies) at the screening visit
  14. Subject has a severe immunocompromising condition or a family history of primary immunodeficiency
  15. Subject has a clinical relevant active infection (eg. sepsis, pneumonia, and abscess) or has had a serious infection (resulting in hospitalization or parenteral antibiotic treatment) within 6 weeks prior to the first dose of rituximab/placebo
  16. Subject has an active neoplastic disease or history of neoplastic disease within 5 years of study entry (except for basal or squamous cell carcinoma of the skin or carcinoma in situ of the uterine cervix which has been definitely treated with standard of care approaches)
  17. Subject was treated with plasma exchange or immunoabsorption within 3 months of randomization, with /chemotherapeutic medications including azathioprine, cyclophosphamide, cyclosporine, mycophenolate, etanercept, methotrexate within 6 months of randomization, other immunosuppressive medications (including mitoxantrone, alemtuzumab, cladribine, pimecrolimus) at any time; total lymphoid irradiation or hematopoietic stem cell transplantation at any time; any biological therapy within 12 months of randomization
  18. at a dose superior to the equivalent dose of 12.5mg/day or 25 mg on alternate day of oral prednisone or of pulsed 400mg/month of intravenous or intravenous methylprednisolone
  19. Subject has received a within 8 weeks prior to the baseline visit or intend to have live vaccination during the course of the study or within 7 weeks following the final dose of rituximab/placebo
  20. Subject has had prior treatment with rituximab in the 12 months before inclusion
  21. History of to any of the study drugs or to drugs of similar chemical classes.
Terms in these criteria, in plain language(14)

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.

Clinically significant

Judged by the study doctor to matter for your health or for the study. It is a doctor’s decision, so ask the study team if you are unsure whether something counts.

Corticosteroids (steroids)

Anti-inflammatory medicines such as prednisone, prednisolone and dexamethasone — not the anabolic steroids used for muscle.

Studies differ in what they allow: check which steroid medicines, routes (tablets, injections, creams, inhalers, eye drops) and doses this study accepts.

Childbearing potential

Able to become pregnant: from the first period until menopause, unless permanently unable to through surgery (removal of the womb, or of both ovaries or both fallopian tubes).

Criteria for people of childbearing potential usually ask for a negative pregnancy test and for contraception during the study and for a time after it.

Contraception

Ways of preventing pregnancy. “Highly effective” methods fail less than 1% of the time a year when used correctly — for example an IUD or an implant.

Criteria usually say which methods count and how long to keep using them after the last dose, sometimes for male participants too. Some studies accept a partner’s vasectomy if it was confirmed successful and that person is the participant’s only sexual partner.

Platelets

Blood cells that help blood clot. Too few raises the risk of bleeding and bruising. A usual adult range is about 150–400 × 10⁹/L (150,000–400,000 per µL); each lab has its own reference range.

Bilirubin

A yellow substance made when red blood cells are broken down, which the liver clears. A high level can mean a problem with the liver or the bile ducts.

Criteria often allow more for people with Gilbert’s syndrome, a harmless inherited condition that raises bilirubin.

ULN (upper limit of normal)

The top of the normal range for a blood test, as set by the laboratory that runs it. Each lab prints its own range next to your result.

“≤ 2.5 × ULN” means the result can be up to two and a half times that top value.

ALT and AST (liver enzymes)

Two enzymes measured in a routine blood test of the liver. Higher levels can mean the liver is under strain or damaged. SGPT and SGOT are older names for ALT and AST.

Criteria usually give a limit as a multiple of the upper limit of normal (ULN), often higher when cancer has spread to the liver.

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 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.

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.

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.

Live vaccines

Vaccines made with a weakened form of the germ, such as measles–mumps–rubella (MMR), chickenpox and yellow fever. They can be risky when the immune system is weakened. Flu injections are not live; the nasal flu spray is.

Hypersensitivity

An allergy, or another reaction of the immune system, to a substance. “Hypersensitivity to the study drug” means a known allergic reaction to it — not every side effect a medicine can have.

05

Study design

Phase
Phase 3
Primary purpose
Treatment
Allocation
Randomized
Intervention model
Parallel assignment
Masking
Quadruple (Participant, Care provider, Investigator, Outcomes assessor)
Enrollment
37 participants (actual)

Study arms

  • Active comparator
    Treatment arm

    Rituximab Patients will receive two doses of rituximab 1 g at two-week interval and one dose of rituximab 1 g at month 6

    Drug: Rituximab

  • Placebo comparator
    Placebo arm

    Placebo Patients will receive two doses of placebo at two-week interval and one dose of placebo at month 6

    Other: Placebo

Interventions

  • Patients will receive two doses of rituximab 1 g at two-week interval and one dose of rituximab 1 g at month 6

  • OtherPlacebo

    Patients will receive two doses of placebo at two-week interval and one dose of placebo at month 6

06

What researchers measure

Primary outcomes

  1. Inflammatory Neuropathy Cause and Treatment (INCAT) scale, range 0-10 points with higher values meaning more severe disability

    proportion of patients with CIDP who worsen by at least one point in the INCAT score within six months after suspension of six-month treatment with intravenous or subcutaneous immunoglobulin

    Time frame: 6 months

  2. Medical Research Council (MRC), range 0-60 with lower values meaning more severe disability

    proportion of patients with CIDP who worsen by at least two points in the MRC sum score within six months after suspension of six-month treatment with intravenous or subcutaneous immunoglobulin

    Time frame: 6 months

  3. Inflammatory Rasch-built Overall Disability Scale (I-RODS), range 0-48 with lower values meaning more severe disability

    proportion of patients with CIDP who worsen by at least four points in the I-RODS scale within six months after suspension of six-month treatment with intravenous or subcutaneous immunoglobulin

    Time frame: 6 months

Secondary outcomes

  1. Inflammatory Neuropathy Cause and Treatment (INCAT) scale, , range 0-10 points with higher values meaning more severe disability

    improvement of disability (INCAT score) compared to placebo after 6, 12 and 18 months from the start of treatment

    Time frame: 6,12,18 months

  2. Inflammatory Neuropathy Cause and Treatment (INCAT) scale, range 0-10 points with higher values meaning more severe disability

    efficacy of rituximab compared to placebo in reducing the number of patients with CIDP who worsen by at least one point in the INCAT score within 12 months after suspension of six-month treatment with intravenous or subcutaneous immunoglobulin

    Time frame: 12 months

  3. treatment suspension

    proportion of patients who suspend the treatment with rituximab or placebo for adverse events or for voluntary reasons or who develop adverse events in the 12 months following the start of treatment.

    Time frame: 12 months

  4. time to worsening

    to compare the mean time for patients with CIDP treated with rituximab or placebo to worsen by at least one point in the INCAT score after suspension of six-month treatment with intravenous or subcutaneous immunoglobulin

    Time frame: 6 months

  5. Short Form Health Survey 36 (SF-36), range from 0 to 100, with a higher score defining a more favorable health state

    to determine whether the association of rituximab to intravenous immunoglobulin (IVIg) or subcutaneous immunoglobulin (SCIg) in patients with CIDP may improve compared to placebo the quality of life of the patients determined by SF-36 after 6, 12 and 18 months from the start of treatment.

    Time frame: 6,12,18 months

Other outcomes

  1. motor conduction block in the two most relevant nerves, range 0-100% with lower score defining lesser degree of impairment

    To determine the difference between patients treated with rituximab or placebo in the mean variation of motor conduction block in the two most relevant nerves between at the baseline and months 6 and 12 from the start of treatment

    Time frame: 6 and 12 months

  2. clinical form

    to correlate the response to therapy with rituximab with the clinical form of typical or atypical CIDP

    Time frame: 6,12, and 18 months

  3. response to rituximab in patients with antinerve antibodies

    to correlate the response to therapy with rituximab in patients with CIDP with the presence of antibody reactivities against proteins at the node of Ranvier (contactin 1 and neurofascin 155).

    Time frame: 6, 12 and 18 months

07

Study locations

1 site
  • IRCCS Istituto Clinico Humanitas
    Rozzano, Italy
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 reached

Ran from Apr 2019 to primary completion in May 2023, 49 months.

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

Registered
May 17, 2023
First posted
Mar 22, 2024
StartActual
Apr 1, 2019
Primary completionActual
May 30, 2023
CompletionActual
Nov 30, 2023
Last update
Mar 26, 2024
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 Mar 26, 2024, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
10

Registry details

Key details

Study ID
NCT06325943
Collaborators
Ospedale Mondino di Pavia, University of Turin, Italy, Istituto Neurologico Carlo Besta di Milano, San Raffaele University Hospital, Italy, Università di Messina, Universita degli Studi di Genova, Istituto Di Ricerche Farmacologiche Mario Negri, Università di Napoli Federico II
Responsible party
Sponsor
First posted
Mar 22, 2024
Start date
Apr 1, 2019
Primary completion
May 30, 2023
Completion
Nov 30, 2023
Last update
Mar 26, 2024

Oversight

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

Not currently enrolling

This study is completed, as verified in Mar 2024. You cannot join it, but the record below documents what was studied.

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Studies of the drug tested here: Rituximab

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