Evidence map›Paper›PMID 35511084›Full record

ArticleBrain and behavior2022

No optical coherence tomography changes in premanifest Huntington's disease mutation carriers far from disease onset.

Rahel Dominique Schmid, Jana Remlinger, Mathias Abegg, Robert Hoepner, Rainer Hoffmann, Carsten Lukas, Carsten Saft, Anke Salmen

Open access · goldAbstract read
In one paragraph

Article in Brain and behavior, 2022. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 8 papers, 2 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
8citing papers in PubMed, 2 pooled it
1.0field-weighted citation impact, top 29% 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

8 citing papers in PubMed, 2 syntheses or guidelines pooled it, 11 citations in OpenAlex.

  1. Pooled it
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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

8 authors at 3 institutions in 2 countries.

Rahel Dominique SchmidDepartment of Ophthalmology, Inselspital, Bern University Hospital and University of Bern, Bern, Switzerland.
Jana RemlingerDepartment of Neurology, Inselspital, Bern University Hospital and University of Bern, Bern, Switzerland.ORCID 0000-0002-6502-4383
Mathias AbeggDepartment of Ophthalmology, Inselspital, Bern University Hospital and University of Bern, Bern, Switzerland.
Robert HoepnerDepartment of Neurology, Inselspital, Bern University Hospital and University of Bern, Bern, Switzerland.
Rainer HoffmannDepartment of Neurology, St. Josef-Hospital, Ruhr-University Bochum, Huntington Center NRW, Bochum, Germany.
Carsten LukasInstitute of Neuroradiology, St. Josef-Hospital, Ruhr-University Bochum, Bochum, Germany.
Carsten SaftDepartment of Neurology, St. Josef-Hospital, Ruhr-University Bochum, Huntington Center NRW, Bochum, Germany.
Anke SalmenDepartment of Neurology, Inselspital, Bern University Hospital and University of Bern, Bern, Switzerland.
University of Bern · CHSt. Josef-Hospital · DEIsar-Amper-Klinikum München-Ost · DE

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundSpectral-domain optical coherence tomography (OCT) may detect retinal changes as a biomarker in neurodegenerative diseases like manifest Huntington's disease (HD). We investigate macular retinal layer thicknesses in a premanifest HD (pre-HD) cohort and healthy controls (HC).

methodsPre-HD mutation carriers underwent standardized ratings and a preset macular OCT scan. Thickness values were determined for each sector of all macular retinal layers, the mean of all sectors and the mean of the inner ring (IR, 3 mm) after segmentation (Heyex segmentation batch). HC were retrospectively included from an existing database. The IR thickness of the ganglion cell layer (GCL), retinal nerve fiber layer (RNFL), GCL + inner plexiform layer (GCIPL), and total retina were included in the exploratory correlation analyses with paraclinical ratings and compared to HC.

resultsThe analyses comprised n = 24 pre-HD participants (n = 10 male, n = 14 female) and n = 38 HC (n = 14 male, n = 24 female). Retinal layer parameters did not correlate with paraclinical ratings. Expected correlations between established HD biomarkers were robust. The IR thicknesses of the GCL, GCIPL, and total retina did not differ between pre-HD and HC. The IR thickness of the RNFL was significantly higher in pre-HD participants (pre-HD: 23.22 μm (standard deviation 2.91), HC: 21.26 μm (1.90), p = .002). DISCUSSION: In this cross-sectional cohort of genetically determined pre-HD participants, neurodegenerative features were not detected with retinal layer segmentation. Since our pre-HD collective was more than 16 years before disease onset, OCT may not be sensitive enough to detect early changes.

Indexed as

Huntington DiseaseTomography, Optical CoherenceBiomarkersCross-Sectional StudiesFemaleHumansMaleMutationNerve FibersRetinal Ganglion CellsRetrospective StudiesBiomarkersbiomarkerHuntington's diseaseneurodegenerationoptical coherence tomographyretinal changes

Identifiers

PMID35511084
PMCPMC9226796
OpenAlexW4229011943

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Registered trials

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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.