Evidence map›Paper›PMID 21636861›Full record

Trial reportBlood2011

A phase 2 study of the safety and efficacy of rituximab with plasma exchange in acute acquired thrombotic thrombocytopenic purpura.

Marie Scully, Vickie McDonald, Jamie Cavenagh, Beverley J Hunt, Ian Longair, Hannah Cohen, Samuel J Machin

Registry-linked trialOpen access · bronzeAbstract readRandomized Controlled Trial
PubMed Publisher
In one paragraph

Trial report in Blood, 2011. The graph could read no effect estimate from its abstract, so it casts no vote on the map. It is linked to trial NCT05262881 (A Retrospective, Observational Study on the Response to Caplacizumab Treatment in aTTP Patients), which is not on this map. Cited by 148 papers, 3 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
148citing papers in PubMed, 3 pooled it
12.0field-weighted citation impact, top 1% 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.

NCT05262881 unknown statusnot on this mapstarted 2022, after this paper: background citation

A Retrospective, Observational Study on the Response to Caplacizumab Treatment in aTTP Patients: the Italian Experience (ROSCAPLI)

TypeobservationalSponsorCatholic University of the Sacred HeartRan2022 to 2022Enrolled50ConditionsThrombotic Thrombocytopenic Purpura, Acquired
3 · Its place in the literature

Who cites it

148 citing papers in PubMed, 3 syntheses or guidelines pooled it, 415 citations in OpenAlex.

  1. Guideline
  2. Guideline
  3. Comparison of the Long-Term Remission of Rituximab and Conventional Treatment for Acquired Thrombotic Thrombocytopenic Purpura: A Systematic Review and Meta-Analysis.Clinical and applied thrombosis/hemostasis : official journal of the International Academy of Clinical and Applied Thrombosis/Hemostasis
    Pooled it
  4. Trial
  5. Trial
  6. Trial
  7. Article
  8. Article
  9. Review
  10. Article
  11. Unmet health care needs in immune thrombotic thrombocytopenic purpura survivors.Research and practice in thrombosis and haemostasis · 2026
    Article
  12. Article
  13. Article
  14. Article
  15. Review
  16. Review
  17. Article
  18. Review
  19. Article
  20. Article

88 more citing papers are in PubMed but not listed here.

4 · The record

Corrections and comments

5 · Who and what money

Authors and funding

7 authors at 3 institutions in 1 country.

Marie ScullyDepartment of Haematology, University College London Hospital, London, United Kingdom. m.scully@ucl.ac.uk
Vickie McDonald
Jamie Cavenagh
Beverley J Hunt
Ian Longair
Hannah Cohen
Samuel J Machin
University College London · GBNational Health Service · GBRoyal London Hospital · GB

Funding

British Heart Foundation FS/10/013/28073Medical Research Council G0800671
6 · The paper itself

Abstract

The safety and efficacy of weekly rituximab 375 mg/m(2) (×4), given within 3 days of acute TTP admission, with standard therapy (PEX and steroids) was evaluated. Clinical outcomes were compared to historical controls (n = 40) who had not received rituximab. Within the trial group, 15 of 40 required ICU admission and 15% of all cases with the highest troponin T levels on admission were ventilated. Before the second rituximab infusion, 68% of cases had a platelet count > 50 × 10(9)/L and 38% > 150 × 10(9)/L. Fewer PEX were required in whites compared to nonwhite in the rituximab group (mean 14 vs 21, P = .0095). Inpatient stay was reduced by 7 days in the non-ICU trial cases compared to historical controls (P = .04), especially in whites, with a mean reduction of 7 days (P = .05). Ten percent of trial cases relapsed, median, 27 months (17-31 months), compared to 57% in historical controls, median 18 months (3-60 months; P = .0011). There were no excess infections or serious adverse events with rituximab. In conclusion, rituximab appears a safe and effective therapy. Inpatient stay and relapse are significantly reduced in the rituximab cohort. Rituximab should be considered in conjunction with standard therapy on acute presentation of TTP. This study was registered at www.clinicaltrials.gov as NCT009-3713.

Indexed as

ADAM ProteinsADAMTS13 ProteinAdolescentAdultAgedAged, 80 and overAntibodies, Monoclonal, Murine-DerivedAntigens, CD19FemaleHumansImmunologic FactorsMaleMiddle AgedPlasma ExchangePurpura, Thrombotic ThrombocytopenicRecurrenceADAM ProteinsADAMTS13 ProteinADAMTS13 protein, humanAntibodies, Monoclonal, Murine-DerivedAntigens, CD19Immunologic FactorsRituximab

Identifiers

PMID21636861
OpenAlexW1989736884

What OpenQuestion holds

Textmetadata
Read underepoch 390

Registered trials

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.