ClinicalTrials.gg
CompletedNCT04269551Updated Sep 22, 2025

A Safety and Tolerability Study of BIVV020 in Adults With Cold Agglutinin Disease

A Phase 1 interventional study of BIVV020 in Autoimmune Haemolytic Anaemia, sponsored by Bioverativ, a Sanofi company. Completed at 10 sites in 6 countries. Open to participants aged 18 Years and older. Per ClinicalTrials.gov, last updated 2025-09-22.

Sponsored by Bioverativ, a Sanofi company (part of Sanofi) · Phase 1, Interventional, and Treatment

From the registry’s dates

  • Primary completion was Jan 2022, 4 years 10 months ago, and no results have been posted to the registry.
Phase
Phase 1
Study type
Interventional
Enrollment
12
Allocation
Not applicable
Ages
18 Years and older
Sex
All
01

Where this study stands

Counted across the records on this site · 2026-11-12

Among 31 studies in Anemia, Hemolytic, Autoimmune with a site in United States — 4 open to participants now, 9 under way, 4 of them phase 3. Anemia, Hemolytic, Autoimmune · United States.

Enrollment
21st of 30
12 · median 24
Started
2020
with 2 others
Phase 1
3 of 31
1 open now
Registered
17th of 31
by date
Lead sponsor
3 of 31
Bioverativ, a Sanofi company

Among the 31 studies in Anemia, Hemolytic, Autoimmune with a site in United States, this one is the 21st largest by enrollment of the 30 interventional ones that give a count, is one of 3 that started in 2020, is one of 3 in phase 1, and was the 17th registered.

Anemia, Hemolytic, Autoimmune

103 studies on the registry are indexed under Anemia, Hemolytic, Autoimmune; 39 are open to participants now.

Browse Anemia, Hemolytic, Autoimmune studies →

Open to participants now

4 of the 31 studies in Anemia, Hemolytic, Autoimmune with a site in United States are open now. Recruiting first, the newest first:

All 4 open studies →

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

Who these studies take

Of the 24 Anemia, Hemolytic, Autoimmune studies recruiting now, 12 (50%) set no upper age limit and 10 (42%) stop at 75 or younger; 5 take children under 18; none take healthy volunteers.

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

The full table on the hub →

This tab as a report to print or save as PDF → With an account.

Was this useful?
Watch this landscapeDownload CSVNarrow it in search →With an account: a weekly mail of what changed among 31 studies in Anemia, Hemolytic, Autoimmune with a site in United States, or all of them as a file.
02

Study summary

Primary Objective:

To assess the safety and tolerability in participants with cold agglutinin disease (CAD), after a single dose of intravenous (IV) BIVV020

Secondary Objectives:

To assess, in participants with cold agglutinin disease, after a single dose of intravenous (IV) BIVV020:

  • The effect of BIVV020 on complement mediated hemolysis
  • The pharmacodynamics (PD) of BIVV020 relating to complement inhibition
  • The pharmacokinetics (PK) of BIVV020
  • The immunogenicity of BIVV020
Read the detailed description

Up to 23 weeks (screening period up to 8 weeks, treatment period 15 weeks)

03

Conditions studied

  • Autoimmune Haemolytic Anaemia
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

  • Male and/or female patients, ≥ 18 years of age with cold agglutinin disease as defined by:

    1. Chronic hemolysis per Investigator's judgement,
    2. Polyspecific direct antiglobulin test (DAT) positive,
    3. Monospecific DAT strongly positive for C3d,
    4. Cold agglutinin (CAg) titer ≥ 64 at 4 C; and,
    5. IgG DAT ≤1+.
  • A level ≤11 mg/dL.
  • A total level above the normal reference range that is thought to be due to hemolysis.
  • Documented vaccinations against encapsulated bacterial pathogens (Neisseria meningitidis, including serogroup B meningococcus and Streptococcus pneumoniae) within five years of screening or willing to complete protocol specified vaccinations.
  • Having given written prior to undertaking any study-related procedure.

Exclusion criteria

Exclusion criteria:

  • Cold agglutinin syndrome secondary to infection, rheumatologic disease, or known high grade hematologic , or known solid organ tumor.
  • infection of any kind within one month preceding screening.
  • Treatment with anti-CD20 monotherapy within three months or anti CD20 combination therapies within six months prior to screening.
  • Concurrent treatment with systemic agents targeting B- or T-cell function and/or cytotoxic agents within 3 months prior to screening. Concurrent treatment with other systemic immunosuppressants within 5.5 half-lives of the drug prior to screening.
  • Any specific complement system inhibitor within three months prior to screening.
  • Concurrent treatment with systemic other than a stable daily dose equivalent to ≤10 mg/day prednisone within three months prior to screening.
  • If female, pregnant or lactating.

The above information is not intended to contain all considerations relevant to a patient's potential participation in a clinical trial.

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.

Hemoglobin (Hb)

The protein in red blood cells that carries oxygen. A low level is anaemia, which can cause tiredness and breathlessness. Measured in g/dL or g/L (9 g/dL is 90 g/L).

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.

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.

Cancer (malignancy)

Malignancy means cancer. Criteria about another or earlier malignancy ask whether you have had a different cancer, usually within a set number of years.

Some are commonly allowed, such as treated skin cancers other than melanoma and early cancers removed completely — check the exceptions this study lists.

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.

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.

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.

05

Study design

Phase
Phase 1
Primary purpose
Treatment
Allocation
Not applicable
Intervention model
Single group
Masking
None (open label)
Enrollment
12 participants (actual)

Study arms

  • Experimental
    BIVV020 IV

    Single administration dose 1, plus two optional doses of BIVV020 administered intravenously.

    Drug: BIVV020

Interventions

  • Pharmaceutical form:solution for injection Route of administration: intravenous

06

What researchers measure

Primary outcomes

  1. Assessment of adverse events (AEs)

    Number of participants with adverse events (AEs)

    Time frame: Screening to Day 106

Secondary outcomes

  1. Mean change from baseline in bilirubin over time

    Assessment of total bilirubin

    Time frame: Day 1 to Day 106

  2. Mean change from baseline in hemoglobin over time

    Assessment of hemoglobin

    Time frame: Day 1 to Day 106

  3. Complement System Classical Pathway Levels as Measured by WIESLAB Assay

    Inhibition by BIVV020 of the complement system classical pathway measured by the WIESLAB assay

    Time frame: Day 1 to Day 106

  4. Complement System Alternative Pathway Levels as Measured by WIESLAB Assay

    Effect of BIVV0020 on the complement system alternative pathway measured by the WIESLAB assay

    Time frame: Day 1 to Day 106

  5. Total Complement (CH50) Levels

    Complement CH50 is a blood test that helps us determine whether protein abnormalities and deficiencies in the complement system are responsible for any increase in autoimmune activity. It will be assessed using complement assays.

    Time frame: Day 1 to Day 106

  6. Total Complement Factor C4 Levels

    Total C4 Levels will be assessed in plasma using complement assays

    Time frame: Day 1 to Day 106

  7. PK parameter: Cmax

    Observed maximum plasma concentration

    Time frame: Day 1 to Day 106

  8. PK parameter: tmax

    Observed first time to reach Cmax

    Time frame: Day 1 to Day 106

  9. PK parameter: AUClast

    Area under the plasma concentration versus time curve calculated using the trapezoidal method from time zero to the real time tlast

    Time frame: Day 1 to Day 106

  10. PK parameter: AUC0-∞

    Calculated area under the plasma concentration versus time curve extrapolated to infinity

    Time frame: Day 1 to Day 106

  11. Number of participants with anti-BIVV antibodies

    Observed number of participants with BIVV020 antibodies

    Time frame: Day 1 to Day 106

07

Study locations

10 sites
  • Investigational Site Number :8400002
    Fayetteville, Georgia 30214, United States
  • Investigational Site Number :8400009
    St Louis, Missouri 63110, United States
  • Investigational Site Number :8400006
    The Bronx, New York 10467, United States
  • Investigational Site Number :8400008
    Pittsburgh, Pennsylvania 15232, United States
  • Investigational Site Number :8400004
    Seattle, Washington 98108, United States
  • Investigational Site Number :2760001
    Essen, 45147, Germany
  • Investigational Site Number :3800001
    Milan, Milano 20122, Italy
  • Investigational Site Number :5280001
    Amsterdam, 1105AZ, Netherlands
  • Investigational Site Number :5780001
    Bergen, 5021, Norway
  • Investigational Site Number :8260001
    London, London, City of NW1 2PJ, United Kingdom
08

References and documents

Publications

  • Chow T, Wardecki M, Storek M, Wong N. Confirmation of Fixed Quarterly Riliprubart Regimen in Patients with Cold Agglutinin Disease Using Population PK/PD and Exposure-Response Analyses. Clin Pharmacol Ther. 2025 Aug;118(2):449-458. doi: 10.1002/cpt.3692. Epub 2025 Apr 30. PubMed 40308078 ↗
  • D'Sa S, Vos JMI, Barcellini W, Wardecki M, Perrin L, Barker G, Zilberstein M, Storek M, Chow T, Roth A. Safety, tolerability, and activity of the active C1s antibody riliprubart in cold agglutinin disease: a phase 1b study. Blood. 2024 Feb 22;143(8):713-720. doi: 10.1182/blood.2023022153. PubMed 38085846 ↗

Individual participant data

Plan to share: Yes — Qualified researchers may request access to patient level data and related study documents including the clinical study report, study protocol with any amendments, blank case report form, statistical analysis plan, and dataset specifications. Patient level data will be anonymized and study documents will be redacted to protect the privacy of trial participants. Further details on Sanofi's data sharing criteria, eligible studies, and process for requesting access can be found at: https://vivli.org

09

Timeline

Tracking since Sep 25, 2026
ElapsedEstimatedEstimated, not yet reached

Ran from Jun 2020 to primary completion in Jan 2022, 18 months.

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

Registered
Jan 29, 2020
First posted
Feb 17, 2020
StartActual
Jun 15, 2020
Primary completionActual
Jan 6, 2022
CompletionActual
Jan 6, 2022
Last update
Sep 22, 2025
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 22, 2025, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
10

Registry details

Key details

Study ID
NCT04269551
Responsible party
Sponsor
First posted
Feb 17, 2020
Start date
Jun 15, 2020
Primary completion
Jan 6, 2022
Completion
Jan 6, 2022
Last update
Sep 22, 2025

Study contacts

Clinical Sciences & Operations
study director · Sanofi

Oversight

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

Not currently enrolling

This study is completed, as verified in Sep 2025. You cannot join it, but the record below documents what was studied.

Follow this study

Get an email when the registry record changes — status, dates, results — or when someone posts here.

Sign in to follow

Discussion

Questions and observations about this study, from anyone following it. Not medical advice, and not a channel to the study team — their contact details are on the registry record.

Sign in to join the discussion. Reading takes no account; posting does. You choose a display name, and a pseudonym is the default.

Nothing here yet. If you are running this trial, taking part in it, or weighing whether to, this is the place to say so.

Studies of the drug tested here: Riliprubart

Start the discussion