Evidence map›Paper›PMID 31359341›Full record

ArticleThe patient2019

Patient Experience with Congenital (Hereditary) Thrombotic Thrombocytopenic Purpura: A Conceptual Framework of Symptoms and Impacts.

Abiola O Oladapo, Diane Ito, Christopher Hibbard, Stephanie E Bean, Robert N Krupnick, Bruce M Ewenstein

Open access · hybridAbstract read
In one paragraph

Article in The patient, 2019. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 10 papers.

0numbers the graph read from it
0cells of the map it votes in
10citing papers in PubMed
0.3field-weighted citation impact, top 44% 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

10 citing papers in PubMed, 16 citations in OpenAlex.

  1. Determining what matters most to patients: qualitative interview techniques and methodological considerations for concept saliency analysis and reporting.Quality of life research : an international journal of quality of life aspects of treatment, care and rehabilitation · 2026
    Article
  2. Review
  3. Article
  4. Optimizing the management of congenital thrombotic thrombocytopenic purpura.Research and practice in thrombosis and haemostasis · 2025
    Article
  5. Understanding data visualization techniques in qualitative studies used to develop and validate patient-reported outcome measures: a targeted literature review.Quality of life research : an international journal of quality of life aspects of treatment, care and rehabilitation · 2025
    Review
  6. Article
  7. ADAMTS13 in the New Era of TTP.International journal of molecular sciences · 2024
    Review
  8. Review
  9. Review
  10. 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

6 authors at 3 institutions in 1 country.

Abiola O OladapoBaxalta US Inc., A Member of the Takeda Group of Companies, Cambridge, MA, USA. Abiola.oladapo@takeda.com.
Diane ItoBaxalta US Inc., A Member of the Takeda Group of Companies, Cambridge, MA, USA.
Christopher HibbardBaxalta US Inc., A Member of the Takeda Group of Companies, Cambridge, MA, USA.
Stephanie E BeanIQVIA, New York, NY, USA.
Robert N KrupnickIQVIA, Cambridge, MA, USA.
Bruce M EwensteinBaxalta US Inc., A Member of the Takeda Group of Companies, Cambridge, MA, USA.
Baxalta (United States) · USIQVIA (United States) · USTakeda (United States) · US

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

BACKGROUND AND

objectiveThrombotic thrombocytopenic purpura is a rare, life-threatening disorder characterized by microangiopathic hemolytic anemia and thrombocytopenia, with variable clinical manifestations (e.g., central nervous system, renal, gastrointestinal, and cardiac effects). This study's objective was to gain an in-depth understanding of patients' experiences with the congenital form of thrombotic thrombocytopenic purpura, including the most salient symptoms and impacts associated with congenital thrombotic thrombocytopenic purpura and its treatment.

methodsAn initial conceptual model of thrombotic thrombocytopenic purpura symptoms and impacts was derived from a targeted literature review, refined by interviews with expert hematologists, and further refined by concept elicitation telephone interviews with adults with congenital thrombotic thrombocytopenic purpura in the USA. Patients reported the duration, frequency, and severity experienced for each concept, and rated level of disturbance on a minimum to maximum scale of 0-10.

resultsInterviews were conducted with 11 patients (mean age, 38.2 years; range 21-52 years) in three waves (n = 4, n = 4, n = 3). The most salient symptoms (reported most frequently and rated by patients as most disturbing) were fatigue, headache, bruising, joint pain, muscular pain, forgetfulness, and difficulty communicating. The most salient impacts included diminished ability to work/study, financial distress, feeling depressed, feeling anxious, and mood swings. Patients' comments reflected the pervasive nature of congenital thrombotic thrombocytopenic purpura symptoms and impacts, and unmet treatment needs.

conclusionsThe final conceptual model, which includes salient symptoms and impacts of congenital thrombotic thrombocytopenic purpura and reflects the disease burden, was derived by integrating inputs from the literature review, expert opinion, and patient interviews, and will be used to develop a congenital thrombotic thrombocytopenic purpura-specific, patient-reported outcome instrument.

Indexed as

Cost of IllnessAdultDatabases, FactualFemaleHumansInterviews as TopicMaleMiddle AgedPurpura, Thrombotic ThrombocytopenicQualitative ResearchYoung Adult

Identifiers

PMID31359341
PMCPMC6697707
OpenAlexW2965841104

What OpenQuestion holds

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LicenceCC BY-NC
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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.