Curated scientific intelligence
Discover
Developments across the published libraries, ranked by evidence, connection, and — if you follow topics — relevance to you. Each card is a movement in the literature: what changed, how the evidence is labeled, and why it matters.
Each development carries an evidence label. What the labels mean
Latest is ordered by when PaperFren added the explanation, not by the study's original publication date.
Long COVID · Patient-reported outcomes
Published 2021 · Explained Sep 2026◐ Evidence: Emerging
What changed
The symptom inventory is far wider than the clinical literature had described, and post-exertional malaise moved to the centre of the picture. Prevalence, though, remains an open question this design cannot close.
2 studies · International online cross-sectional su…
Sepsis · Patient stratification
Published 2016 · Explained Sep 2026↑ Evidence: Strengthening
What changed
A transcriptomic stratification replicates across cohorts and predicts mortality. It does not show that assigning patients to a signature and treating them differently improves survival — that requires a trial nobody has run here.
2 studies · Prospective cohort with unsupervised tr…
Oncology · Tumour heterogeneity
Published 2015 · Explained Sep 2026● Evidence: Preliminary
What changed
Multi-site sampling shows substantial spatial heterogeneity and a pre-existing resistant clone in this cohort. With 14 patients and significance only on a median split, this is a signal worth pursuing, not a clinical test.
2 studies · Phylogenetic copy-number analysis of mu…
Measurement · Physical activity
Published 2014 · Explained Sep 2026◐ Evidence: Emerging
What changed
Its two domains have very different validity, and only the activity domain tracks change. A 95-person Northern Ireland sample cannot establish performance in every country, and the change analysis with n = 41 was underpowered.
1 study · Criterion validity study against seven-…
Circadian · Diabetes
Published 2011 · Explained Sep 2026↑ Evidence: Strengthening
What changed
Two independent prospective cohorts show a graded association with years worked. The design cannot establish causation, and the mediating role of weight gain is unresolved.
1 study · Two prospective cohort studies
Diabetes · Mechanism
Published 2007 · Explained Sep 2026↑ Evidence: Strengthening
What changed
A gene can be central to the physiology and absent from the heritability. This is mechanistic human physiology, not a trial: nothing here shows that lowering TXNIP improves glycaemic outcomes.
1 study · Human physiology combining hyperinsulin…