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Record W1953811136

Frequently relapsing thrombotic thrombocytopenic purpura treated with cytotoxic immunosuppressive therapy.

2001· article· en· W1953811136 on OpenAlex
David Allan, M.J. Kovacs, William F. Clark

Why this work is in the frame

A frame that forgets how it found something cannot be audited. These are the routes that admitted this work.

affAt least one author lists a Canadian institution in the pinned OpenAlex snapshot.

Bibliographic record

VenuePubMed · 2001
Typearticle
Languageen
FieldImmunology and Microbiology
TopicComplement system in diseases
Canadian institutionsWestern University
Fundersnot available
KeywordsMedicineAzathioprineThrombotic thrombocytopenic purpuraImmunosuppressionImmunologyCytotoxic T cellCyclophosphamideAutoantibodyVon Willebrand factorAlloimmunityRituximabPlateletInternal medicineGastroenterologyChemotherapyImmune systemAntibodyDisease
DOInot available

Abstract

fetched live from OpenAlex

BACKGROUND AND OBJECTIVES: Treatment of thrombotic thrombocytopenic purpura (TTP) with plasma exchange has reduced mortality rates from 90% in untreated cases to less than 20%. Despite plasma exchange, relapses may occur in as many as 40% of cases. Multiple relapses occur in a minority but pose a significant therapeutic challenge. Recent evidence supports the presence of an autoantibody which inhibits proteolysis of von Willebrand factor (vWF) in active TTP, allowing large multimers of vWF to form and promote platelet aggregation. Additional evidence suggests autoantibodies activate capillary endothelium and promote platelet aggregation in the microcirculation. Immunosuppression, thus, has a biologically plausible role in TTP. We describe three consecutive cases of relapsing TTP treated with cytotoxic therapy to highlight the potential role of immunosuppression. DESIGN AND METHODS: Cytotoxic immunosuppressive therapy with either cyclophosphamide or azathioprine was used in three consecutive patients with frequently relapsing TTP. RESULTS: All three patients have maintained remissions of 8 to 10 months without recurrence. INTERPRETATION AND CONCLUSIONS: Cytotoxic immunosuppressive therapy may have a role in inducing long-term remissions in recurrent TTP.

Fetched live from OpenAlex and de-inverted. Abstracts are not stored in this database: the inverted indexes are 8.6 GB of the frame’s 9.3 GB of text, and the host has 13 GB free.

Full frame distilled prediction

Teacher imitation

Not calibrated prevalence, not ground truth. Human validation pending. Learned from the 10,348 direct Codex labels and 10,348 direct Gemma labels. Candidate is the union of thresholded teacher heads; consensus is their intersection. These outputs are machine_predicted_unvalidated and are not human labels or direct frontier model labels.

metaresearch head score (Codex)0.000
metaresearch head score (Gemma)0.000
Version: codex-gemma-dda1882f352aValidation status: machine_predicted_unvalidated
Candidate categoriesMeta-epidemiology (narrow), Insufficient payload (model declined to judge)
Consensus categoriesnone
DomainCandidate signal: none · Consensus signal: none
Study designCandidate signal: Observational · Consensus signal: Observational
GenreCandidate signal: Empirical · Consensus signal: Empirical
Teacher disagreement score0.412
Threshold uncertainty score1.000

Codex and Gemma teacher scores by category

CategoryCodexGemma
Metaresearch0.0000.000
Meta-epidemiology (narrow)0.0000.000
Meta-epidemiology (broad)0.0010.000
Bibliometrics0.0000.000
Science and technology studies0.0000.000
Scholarly communication0.0000.000
Open science0.0000.000
Research integrity0.0000.000
Insufficient payload (model declined to judge)0.0020.000

Machine scores (provisional)

The two teacher heads of the student model, read on this work. A score orders the frame for review; it never asserts a category, and the validation status ships verbatim with every row.

Baseline scores from an immature model (maturity gate not passed, 7 training rounds). Scores rank; they never assert a category.

Opus teacher head0.032
GPT teacher head0.231
Teacher spread0.200 · how far apart the two teachers sit on this one work
Validation statusscore_only:v0-immature-baseline · verbatim from the scoring run: score_only means the number may rank works, and no category label ships from it