Evidence map›Paper›PMID 23974642›Full record

Trial reportJournal of neurology2013

Long-term effects of tafamidis for the treatment of transthyretin familial amyloid polyneuropathy.

Teresa Coelho, Luis F Maia, Ana Martins da Silva, Márcia W Cruz, Violaine Planté-Bordeneuve, Ole B Suhr, Isabel Conceiçao, Hartmut H-J Schmidt, Pedro Trigo, Jeffery W Kelly and 4 more

Open access · hybridAbstract readMulticenter StudyRandomized Controlled Trial
In one paragraph

Trial report in Journal of neurology, 2013. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 174 papers, 3 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
174citing papers in PubMed, 3 pooled it
14.7field-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.

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

174 citing papers in PubMed, 3 syntheses or guidelines pooled it, 334 citations in OpenAlex.

  1. Pooled it
  2. Overview of treatments used in transthyretin-related hereditary amyloidosis: a systematic review.European journal of hospital pharmacy : science and practice · 2020
    Pooled it
  3. Pharmacological treatment for familial amyloid polyneuropathy.The Cochrane database of systematic reviews · 2020
    Pooled it
  4. Trial
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  11. Early intervention with tafamidis provides long-term (5.5-year) delay of neurologic progression in transthyretin hereditary amyloid polyneuropathy.Amyloid : the international journal of experimental and clinical investigation : the official journal of the International Society of Amyloidosis · 2016
    Trial
  12. Trial
  13. The effect of tafamidis on the QTc interval in healthy subjects.British journal of clinical pharmacology · 2015
    Trial
  14. Review
  15. Article
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  19. Article
  20. Review

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

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

14 authors at 11 institutions in 7 countries.

Teresa CoelhoUnidade Clinica de Paramiloidose, Hospital de Santo António, Largo Prof Abel Salazar, 4099-001, Porto, Portugal, tcoelho@netcabo.pt.
Luis F Maia
Ana Martins da Silva
Márcia W Cruz
Violaine Planté-Bordeneuve
Ole B Suhr
Isabel Conceiçao
Hartmut H-J Schmidt
Pedro Trigo
Jeffery W Kelly
Richard Labaudinière
Jason Chan
Jeff Packman
Donna R Grogan
Pfizer (United States) · USHospital de Santo António · PTCentre Hospitalier Universitaire Henri-Mondor · FRFundación para la Lucha contra las Enfermedades Neurológicas de la Infancia · ARHertie Institute for Clinical Brain Research · DEHospital de Santa Maria · PTHospital Universitário Clementino Fraga Filho · BRKCI (United States) · USScripps Research Institute · USUmeå University · SEUniversity Hospital Münster · DE

Funding

Probing the biochemical mechanism of amyloid diseaseR37DK046335 · NIDDK · SCRIPPS RESEARCH INSTITUTE, THE · PI KELLY, JEFFERY W · 2006 to 2015
$5.9M
NIDDK NIH HHS R37 DK046335
6 · The paper itself

Abstract

Tafamidis, a transthyretin (TTR) kinetic stabilizer, delayed neuropathic progression in patients with Val30Met TTR familial amyloid polyneuropathy (TTR-FAP) in an 18-month randomized controlled trial (study Fx-005). This 12-month, open-label extension study evaluated the long-term safety, tolerability, and efficacy of tafamidis 20 mg once daily in 86 patients who earlier received blinded treatment with tafamidis or placebo. Efficacy measures included the Neuropathy Impairment Score in the Lower Limbs (NIS-LL), Norfolk Quality of Life-Diabetic Neuropathy total quality of life (TQOL) score, and changes in neurologic function and nutritional status. We quantified the monthly rates of change in efficacy measures, and TTR stabilization, and monitored adverse events (AEs). Patients who continued on tafamidis had stable rates of change in NIS-LL (from 0.08 to 0.11/month; p = 0.60) and TQOL (from -0.03 to 0.25; p = 0.16). In patients switched from placebo, the monthly rate of change in NIS-LL declined (from 0.34 to 0.16/month; p = 0.01), as did TQOL score (from 0.61 to -0.16; p < 0.001). Patients treated with tafamidis for 30 months had 55.9 % greater preservation of neurologic function as measured by the NIS-LL than patients in whom tafamidis was initiated later. Plasma TTR was stabilized in 94.1 % of patients treated with tafamidis for 30 months. AEs were similar between groups; no patients discontinued because of an AE. Long-term tafamidis was well tolerated, with the reduced rate of neurologic deterioration sustained over 30 months. Tafamidis also slowed neurologic impairment in patients previously given placebo, but treatment benefits were greater when tafamidis was begun earlier.

Indexed as

AdultAgedAmyloid Neuropathies, FamilialBenzoxazolesDisease ProgressionDrug Administration ScheduleFemaleFollow-Up StudiesHumansInternational CooperationMaleMethionineMiddle AgedMutationPrealbuminQuality of LifeBenzoxazolesMethioninePrealbumintafamidisValine

Identifiers

PMID23974642
PMCPMC3825212
OpenAlexW2080914865

What OpenQuestion holds

Textmetadata
LicenceCC BY
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.