Evidence map›Paper›PMID 26503107›Full record

ArticleAlzheimer's research & therapy2015

The need for thorough phase II studies in medicines development for Alzheimer's disease.

Julian A Gray, David Fleet, Bengt Winblad

Abstract read
In one paragraph

Article in Alzheimer's research & therapy, 2015. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 6 papers.

0numbers the graph read from it
0cells of the map it votes in
6citing papers in PubMed
–field-weighted citation impact
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

6 citing papers in PubMed.

  1. Article
  2. Article
  3. Review
  4. Review
  5. Alzheimer's disease drug development pipeline: 2017.Alzheimer's & dementia (New York, N. Y.) · 2017
    Review
  6. Article
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

3 authors.

Julian A Gray, Neuroglobe Ltd, Baarerstrasse 135, 6301, Zug, Switzerland. j.gray@graybook.net.
David Fleet, Datamagik Ltd, Laburnum House, East Grimstead, Salisbury, Wiltshire, SP5 3RT, UK.
Bengt WinbladKarolinska Institutet, Department NVS, Center for Alzheimer Research, Division for Neurogeriatrics, Novum plan 5, 14157, Huddinge, Sweden.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

An important factor in the universal failure in phase III trials in mild to moderate Alzheimer's disease in the past decade is the lack of phase II clinical data prior to entering phase III, with common reliance on biomarker results alone. Conduction of two learn-confirm cycles according to the Sheiner model would allow go/no-go decision making to include reliable clinical efficacy data prior to conducting phase III and would likely bring the rate of late stage failure more into line with that of other neurological indications. In studies in earlier disease stages, combined phase IIB/III adaptive approaches merit consideration in view of the long timelines of each study, though advantages and disadvantages of this approach versus the classical development pathway still need careful assessment.

Indexed as

Clinical Trials, Phase II as TopicAlzheimer DiseaseBiomarkers, PharmacologicalDrug DiscoveryHumansBiomarkers, Pharmacological

Identifiers

PMID26503107
PMCPMC4620743

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.