Evidence map›Paper›PMID 42418938›Full record

ReviewCurrent opinion in genetics & development2026

Origins and timing of somatic variants in the brain.

Noriyuki Shinagawa, Tracy A Bedrosian

Abstract readReview
In one paragraph

Review in Current opinion in genetics & development, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.

0numbers the graph read from it
0cells of the map it votes in
0citing 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

0 citing papers in PubMed.

No citing paper in PubMed yet.

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

2 authors.

Noriyuki ShinagawaInstitute for Genomic Medicine, Nationwide Children's Hospital, Columbus, OH, United States.
Tracy A BedrosianInstitute for Genomic Medicine, Nationwide Children's Hospital, Columbus, OH, United States; Dept. of Pediatrics, The Ohio State University College of Medicine, Columbus, OH, United States. Electronic address: Tracy.Bedrosian@NationwideChildrens.org.

Funding

Deciphering brain mosaicism in drug-resistant epilepsy at cellular resolutionR01NS129784 · NINDS · RESEARCH INST NATIONWIDE CHILDREN'S HOSP · PI Tracy Ann Bedrosian · 2023 to 2026
$2.2M
NINDS NIH HHS R01 NS129784
6 · The paper itself

Abstract

Somatic variants accumulate in human brain cells throughout the lifespan. Variant allele fraction has traditionally been used as a proxy for both the developmental timing of somatic variants and their functional effect, based on the assumption that earlier mutations are shared by larger cell populations and therefore have greater potential for severe phenotypes. However, recent discoveries challenge this simplified model. Variables such as developmental bottlenecks, lineage restriction, and cellular and molecular context play critical roles in shaping the distribution and functional impact of somatic variants in the brain. These insights support a shift toward a context-dependent framework for interpreting somatic mosaicism.

Identifiers

PMID42418938
PMCPMC13460307

What Socratic holds

Textmetadata
LicenceTDM
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 Socratic graph.