Evidence map›Paper›PMID 27066571›Full record

ArticleNeurology. Genetics2015

Mutation in the sixth immunoglobulin domain of L1CAM is associated with migrational brain anomalies.

Christine Shieh, Franklin Moser, John M Graham, Valerie Watiker, Tyler Mark Pierson

Open access · goldAbstract read
PubMed Full text at PMC Publisher
In one paragraph

Article in Neurology. Genetics, 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
2.9field-weighted citation impact, top 8% 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

6 citing papers in PubMed, 12 citations in OpenAlex.

  1. Article
  2. Review
  3. Case Report: Two NovelFrontiers in genetics · 2022
    Article
  4. Article
  5. Article
  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

5 authors at 1 institution in 1 country.

Christine ShiehDavid Geffen School of Medicine at UCLA (C.S.), Los Angeles, CA; and Division of Clinical Neuroradiology and Interventional Neuroradiology (F.M.), Division of Clinical Genetics and Dysmorphology (J.M.G.), Department of Pediatrics (J.M.G., V.W.), Department of Pediatrics and Neurology (T.M.P.), and Board of Governors Regenerative Medicine Institute (T.M.P.), Cedars-Sinai Medical Center, Los Angeles, CA.
Franklin MoserDavid Geffen School of Medicine at UCLA (C.S.), Los Angeles, CA; and Division of Clinical Neuroradiology and Interventional Neuroradiology (F.M.), Division of Clinical Genetics and Dysmorphology (J.M.G.), Department of Pediatrics (J.M.G., V.W.), Department of Pediatrics and Neurology (T.M.P.), and Board of Governors Regenerative Medicine Institute (T.M.P.), Cedars-Sinai Medical Center, Los Angeles, CA.
John M GrahamDavid Geffen School of Medicine at UCLA (C.S.), Los Angeles, CA; and Division of Clinical Neuroradiology and Interventional Neuroradiology (F.M.), Division of Clinical Genetics and Dysmorphology (J.M.G.), Department of Pediatrics (J.M.G., V.W.), Department of Pediatrics and Neurology (T.M.P.), and Board of Governors Regenerative Medicine Institute (T.M.P.), Cedars-Sinai Medical Center, Los Angeles, CA.
Valerie WatikerDavid Geffen School of Medicine at UCLA (C.S.), Los Angeles, CA; and Division of Clinical Neuroradiology and Interventional Neuroradiology (F.M.), Division of Clinical Genetics and Dysmorphology (J.M.G.), Department of Pediatrics (J.M.G., V.W.), Department of Pediatrics and Neurology (T.M.P.), and Board of Governors Regenerative Medicine Institute (T.M.P.), Cedars-Sinai Medical Center, Los Angeles, CA.
Tyler Mark PiersonDavid Geffen School of Medicine at UCLA (C.S.), Los Angeles, CA; and Division of Clinical Neuroradiology and Interventional Neuroradiology (F.M.), Division of Clinical Genetics and Dysmorphology (J.M.G.), Department of Pediatrics (J.M.G., V.W.), Department of Pediatrics and Neurology (T.M.P.), and Board of Governors Regenerative Medicine Institute (T.M.P.), Cedars-Sinai Medical Center, Los Angeles, CA.
University of California, Los Angeles · US

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

objectiveTo describe the phenotype of a patient with classical features of X-linked L1 syndrome associated with novel brain malformations.

methodsDiagnostic analysis included physical and dysmorphology examinations, MRI of the brain, and exome sequencing of the family trio.

resultsWe report a 2.5-year-old boy with developmental delay, dysmorphic facies, and adducted thumbs. MRI of the brain showed a truncated corpus callosum and periventricular heterotopias associated with polymicrogyria (PMG). Variant segregation analysis with exome sequencing discovered a novel maternally derived hemizygous variant in exon 14 of the L1CAM gene (c.1759 G>C; p.G587R).

conclusionsThis novel L1CAM mutation was located in the protein's sixth immunoglobin domain and involved glycine-587, a key residue in the structure of L1CAM because of its interactions with lysine-606, which indicates that any mutation at this site would likely affect the secondary structure and function of the protein. The replacement of the small nonpolar glycine residue with a large basic arginine would have an even more dramatic result. The presentation of periventricular nodular heterotopias with overlying PMG is very uncommon, and its association with L1CAM may provide insight into other similar cases. Furthermore, this presentation indicates the important role that L1CAM plays in neuronal migration and brain development and extends the phenotype associated with L1CAM-associated disorders.

Identifiers

PMID27066571
PMCPMC4811382
OpenAlexW2262213343

What OpenQuestion holds

Textmetadata
LicenceCC BY-NC-ND
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.