Evidence map›Paper›PMID 33506955›Full record

ArticleHaemophilia : the official journal of the World Federation of Hemophilia2021

Development and testing of the Satisfaction Questionnaire with Intravenous or Subcutaneous Hemophilia Injection and results from the Phase 3 HAVEN 3 study of emicizumab prophylaxis in persons with haemophilia A without FVIII inhibitors.

Christine Kempton, Peter Trask, Aric Parnes, Markus Niggli, Avrita Campinha-Bacote, Michael U Callaghan, Niamh O'Connell, Ido Paz-Priel, Johnny N Mahlangu

Erratum issuedOpen access · hybridAbstract read
In one paragraph

Article in Haemophilia : the official journal of the World Federation of Hemophilia, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. An erratum has been issued. Cited by 16 papers, 2 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
16citing papers in PubMed, 2 pooled it
2.5field-weighted citation impact, top 10% 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

16 citing papers in PubMed, 2 syntheses or guidelines pooled it, 23 citations in OpenAlex.

  1. Pooled it
  2. Pooled it
  3. Trial
  4. Review
  5. Article
  6. Article
  7. Article
  8. Article
  9. Serious bleeds in pediatric persons with hemophilia A on emicizumab prophylaxis.Research and practice in thrombosis and haemostasis · 2023
    Article
  10. Review
  11. Review
  12. Article
  13. Corrigendum.Haemophilia : the official journal of the World Federation of Hemophilia · 2021
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4 · The record

Corrections and comments

5 · Who and what money

Authors and funding

9 authors at 6 institutions in 4 countries.

Christine KemptonDepartment of Hematology and Medical Oncology, Emory University School of Medicine, Atlanta, GA, USA.ORCID https://orcid.org/0000-0002-2391-2016
Peter TraskGenentech, Inc., South San Francisco, CA, USA.
Aric ParnesBrigham and Women's Hospital, Boston, MA, USA.
Markus NiggliF. Hoffmann-La Roche Ltd, Basel, Switzerland.
Avrita Campinha-BacoteGenentech, Inc., South San Francisco, CA, USA.
Michael U CallaghanChildren's Hospital of Michigan, Detroit, MI, USA.ORCID https://orcid.org/0000-0001-8742-0275
Niamh O'ConnellSt James's Hospital, Dublin, Ireland.
Ido Paz-PrielGenentech, Inc., South San Francisco, CA, USA.
Johnny N MahlanguHaemophilia Comprehensive Care Centre, Faculty of Health Sciences, University of the Witwatersrand and NHLS, Johannesburg, South Africa.ORCID https://orcid.org/0000-0001-5781-7669
Brigham and Women's Hospital · USChildren's Hospital of Michigan · USEmory University · USRoche (Switzerland) · CHSt. James's Hospital · IEUniversity of the Witwatersrand · ZA

Funding

Chugai Pharmaceutical Co., LtdF. Hoffmann-La Roche Ltd
6 · The paper itself

Abstract

introductionEmicizumab is a subcutaneously (SC) administered prophylactic agent for persons with haemophilia A (PwHA). As part of its clinical development, a new instrument was required to measure treatment satisfaction.

aimDescribe development of the Satisfaction Questionnaire with Intravenous or Subcutaneous Hemophilia Injection (SQ-ISHI) and its subsequent testing with HAVEN 3 study participants to measure patient satisfaction with emicizumab.

methodsTo develop the SQ-ISHI, we conducted four rounds of in-person interviews at five qualitative research facilities. Participants aged ≥12 years with moderate or severe haemophilia A, receiving intravenous factor VIII (FVIII) prophylaxis, provided feedback to optimize content understanding, ease of completion and item relevance. The final SQ-ISHI was completed by HAVEN 3 participants who previously received FVIII prophylaxis; baseline scores were compared with those at Week 21 or 25 of emicizumab prophylaxis.

resultsSixty-three HAVEN 3 participants were eligible to complete the questionnaire and rate their satisfaction on a scale of 0 ('not at all satisfied') to 10 ('extremely satisfied'). Mean 'overall satisfaction' with previous FVIII prophylaxis at baseline was 6.9 (95% confidence interval [CI]: 6.2 to 7.7) increasing to 8.8 (95% CI: 8.4 to 9.3) at follow-up (Week 21/25 of treatment with emicizumab). The greatest improvement was observed in satisfaction with treatment half-life (mean score at baseline: 5.8 [95% CI: 4.9 to 6.6] vs 8.6 [95% CI: 8.0 to 9.2] at follow-up).

conclusionThese results demonstrate that emicizumab prophylaxis leads to greater treatment satisfaction compared with FVIII prophylaxis, reflecting in part the low treatment burden of emicizumab associated with its infrequent, SC administration.

Indexed as

Antibodies, BispecificHemophilia AAntibodies, Monoclonal, HumanizedFactor VIIIHemorrhageHumansPersonal SatisfactionSurveys and QuestionnairesAntibodies, BispecificAntibodies, Monoclonal, HumanizedemicizumabFactor VIIIemicizumabhaemophilia Apatient-reported outcomesquestionnaireSQ-ISHItreatment satisfaction

Identifiers

PMID33506955
PMCPMC8048849
OpenAlexW3124520782

What OpenQuestion holds

Textmetadata
LicenceCC BY-NC
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.