Evidence map›Paper›PMID 33277983›Full record

ArticleArthritis & rheumatology (Hoboken, N.J.)2021

The Type II Anti-CD20 Antibody Obinutuzumab (GA101) Is More Effective Than Rituximab at Depleting B Cells and Treating Disease in a Murine Lupus Model.

Anthony D Marinov, Haowei Wang, Sheldon I Bastacky, Erwin van Puijenbroek, Thomas Schindler, Dario Speziale, Mario Perro, Christian Klein, Kevin M Nickerson, Mark J Shlomchik

Open access · greenAbstract read
In one paragraph

Article in Arthritis & rheumatology (Hoboken, N.J.), 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 46 papers, 2 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
46citing papers in PubMed, 2 pooled it
4.4field-weighted citation impact, top 4% of its field
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

46 citing papers in PubMed, 2 syntheses or guidelines pooled it, 63 citations in OpenAlex.

  1. Pooled it
  2. Pooled it
  3. Trial
  4. Review
  5. Review
  6. Article
  7. Article
  8. Article
  9. Review
  10. Management of IgG4-Related Disease.Current rheumatology reports · 2026
    Review
  11. Importance of B cells (Review).International journal of molecular medicine · 2026
    Review
  12. Review
  13. Article
  14. Article
  15. Article
  16. Targeting CD20 for B-cell Depletion in Autoimmune Kidney Disease: Next Generation.BioDrugs : clinical immunotherapeutics, biopharmaceuticals and gene therapy · 2025
    Review
  17. Article
  18. Review
  19. Review
  20. Review
4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

10 authors at 3 institutions in 2 countries.

Anthony D MarinovUniversity of Pittsburgh School of Medicine, Pittsburgh, Pennsylvania.
Haowei WangYale University, New Haven, Connecticut.
Sheldon I BastackyUniversity of Pittsburgh School of Medicine, Pittsburgh, Pennsylvania.
Erwin van PuijenbroekRoche, Zurich, Switzerland.
Thomas SchindlerHoffmann-La Roche, Basel, Switzerland.
Dario SpezialeRoche, Zurich, Switzerland.
Mario PerroRoche, Zurich, Switzerland.
Christian KleinRoche, Zurich, Switzerland.
Kevin M NickersonUniversity of Pittsburgh School of Medicine, Pittsburgh, Pennsylvania.ORCID 0000-0002-0114-2671
Mark J ShlomchikUniversity of Pittsburgh School of Medicine, Pittsburgh, Pennsylvania.ORCID 0000-0002-2152-0959
Roche (Switzerland) · CHUniversity of Pittsburgh · USYale University · US

Funding

THE ROLE OF B CELLS IN LUPUS NEPHRITIS AND VASCULITISR01AR044077 · NIAMS · YALE UNIVERSITY · PI SHLOMCHIK, MARK J · 1997 to 2016
$6.2M
Special BD LSRFortessaTMS10OD011925 · OD · UNIVERSITY OF PITTSBURGH AT PITTSBURGH · PI BORGHESI, LISA · 2012 to 2012
$383k
NIAMS NIH HHS R01 AR044077NIH HHS S10 OD011925
6 · The paper itself

Abstract

objectiveDepleting pathogenic B cells could treat systemic lupus erythematosus (SLE). However, depleting B cells in an inflammatory setting such as lupus is difficult. This study was undertaken to investigate whether a type II anti-CD20 monoclonal antibody (mAb) with a different mechanism of action, obinutuzumab (GA101), is more effective than a type I anti-CD20 mAb, rituximab (RTX), in B cell depletion in lupus, and whether efficient B cell depletion results in amelioration of disease.

methodsWe treated lupus-prone MRL/lpr mice expressing human CD20 on B cells (hCD20 MRL/lpr mice) with either RTX or GA101 and measured B cell depletion under various conditions, as well as multiple clinical end points.

resultsA single dose of GA101 was markedly more effective than RTX in depleting B cells in diseased MRL/lpr mice (P < 0.05). RTX overcame resistance to B cell depletion in diseased MRL/lpr mice with continuous treatments. GA101 was more effective in treating hCD20 MRL/lpr mice with early disease, as GA101-treated mice had reduced glomerulonephritis (P < 0.05), lower anti-RNA autoantibody titers (P < 0.05), and fewer activated CD4+ T cells (P < 0.0001) compared to RTX-treated mice. GA101 also treated advanced disease, and continual treatment prolonged survival. Using variants of GA101, we also elucidated B cell depletion mechanisms in vivo in mice with lupus.

conclusionAlbeit both anti-CD20 antibodies ameliorated early disease, GA101 was more effective than RTX in important parameters, such as glomerulonephritis score. GA101 proved beneficial in an advanced disease model, where it prolonged survival. These data support clinical testing of GA101 in SLE and lupus nephritis.

Indexed as

AnimalsAntibodies, Monoclonal, HumanizedB-LymphocytesFlow CytometryImmunologic FactorsKidneyLupus Erythematosus, SystemicLymphocyte DepletionMiceMice, Inbred MRL lprRituximabSkinAntibodies, Monoclonal, HumanizedImmunologic FactorsobinutuzumabRituximab

Identifiers

PMID33277983
PMCPMC8084886
OpenAlexW3109618120

What OpenQuestion holds

Textmetadata
LicenceTDM
Read underepoch 390

Registered trials

None linked

Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.