Evidence map›Paper›PMID 27484306›Full record

ArticleMolecular genetics and metabolism2016

Expanding the phenotypic spectrum of Succinyl-CoA ligase deficiency through functional validation of a new SUCLG1 variant.

Taraka R Donti, Ruchi Masand, Daryl A Scott, William J Craigen, Brett H Graham

Abstract readCase Reports
In one paragraph

Article in Molecular genetics and metabolism, 2016. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 11 papers, 2 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
11citing papers in PubMed, 2 pooled it
0.9field-weighted citation impact, top 23% 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

11 citing papers in PubMed, 2 syntheses or guidelines pooled it, 19 citations in OpenAlex.

  1. Catching the Culprit: How Chorea May Signal an Inborn Error of Metabolism.Tremor and other hyperkinetic movements (New York, N.Y.) · 2023
    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

5 authors at 1 institution in 1 country.

Taraka R DontiDepartment of Molecular and Human Genetics, Baylor College of Medicine, Houston, TX, USA.
Ruchi MasandDepartment of Molecular and Human Genetics, Baylor College of Medicine, Houston, TX, USA.
Daryl A ScottDepartment of Molecular and Human Genetics, Baylor College of Medicine, Houston, TX, USA; Department of Molecular Physiology and Biophysics, Baylor College of Medicine, Houston, TX, USA.
William J CraigenDepartment of Molecular and Human Genetics, Baylor College of Medicine, Houston, TX, USA.
Brett H GrahamDepartment of Molecular and Human Genetics, Baylor College of Medicine, Houston, TX, USA. Electronic address: bgraham@bcm.edu.
Baylor College of Medicine · US

Funding

Tumor BiologyP30CA125123 · NCI · BAYLOR COLLEGE OF MEDICINE · PI DAVID R ROWLEY · 2007 to 2026
$73.9M
Virology CoreP30AI036211 · NIAID · BAYLOR COLLEGE OF MEDICINE · PI BUTEL, JANET S · 1994 to 2015
$21.7M
Steps towards a paternal gene activation therapy for Angelman syndromeU54HD083092 · NICHD · BAYLOR COLLEGE OF MEDICINE · PI NELSON, DAVID LOREN, NEUL, JEFFREY L · 2014 to 2019
$7.8M
Succinyl-COA Synthetase Deficiency: A Model to Study Mitochondrial DNA (MTDNA) DeR01GM098387 · NIGMS · BAYLOR COLLEGE OF MEDICINE · PI GRAHAM, BRETT HARRISON · 2012 to 2016
$1.5M
Using cell and fly models to understand gene function in undiagnosed diseasesR21GM110190 · NIGMS · BAYLOR COLLEGE OF MEDICINE · PI GRAHAM, BRETT HARRISON · 2014 to 2015
$470k
BD Biosciences Special Order LSRIIS10RR024574 · NCRR · BAYLOR COLLEGE OF MEDICINE · PI LUMPKIN, ELLEN A · 2009 to 2009
$430k
NCI NIH HHS P30 CA125123NCRR NIH HHS S10 RR024574NIAID NIH HHS P30 AI036211NICHD NIH HHS U54 HD083092NIGMS NIH HHS R01 GM098387NIGMS NIH HHS R21 GM110190
6 · The paper itself

Abstract

Deficiency of the TCA cycle enzyme Succinyl-CoA Synthetase/Ligase (SCS), due to pathogenic variants in subunits encoded by SUCLG1 and SUCLA2, causes mitochondrial encephalomyopathy, methylmalonic acidemia, and mitochondrial DNA (mtDNA) depletion. In this study, we report an 11year old patient who presented with truncal ataxia, chorea, hypotonia, bilateral sensorineural hearing loss and preserved cognition. Whole exome sequencing identified a heterozygous known pathogenic variant and a heterozygous novel missense variant of uncertain clinical significance (VUS) in SUCLG1. To validate the suspected pathogenicity of the novel VUS, molecular and biochemical analyses were performed using primary skin fibroblasts from the patient. The patient's cells lack the SUCLG1 protein, with significantly reduced levels of SUCLA2 and SUCLG2 protein. This leads to essentially undetectable SCS enzyme activity, mtDNA depletion, and cellular respiration defects. These abnormal phenotypes are rescued upon ectopic expression of wild-type SUCLG1 in the patient's fibroblasts, thus functionally confirming the pathogenic nature of the SUCLG1 VUS identified in this patient and expanding the phenotypic spectrum for SUCLG1 deficiency.

Indexed as

Acyl Coenzyme AAmino Acid Metabolism, Inborn ErrorsChildDNA, MitochondrialExome SequencingFemaleGenetic Predisposition to DiseaseGenotypeHeterozygoteHumansMitochondriaMutation, MissenseSuccinate-CoA LigasesAcyl Coenzyme ADNA, MitochondrialSuccinate-CoA Ligasessuccinyl-coenzyme ASUCLA2 protein, humanSUCLG1 protein, humanMethylmalonic aciduriaMitochondriaMitochondrial DNA depletionSuccinyl-CoA synthetaseTCA cycle

Identifiers

PMID27484306
PMCPMC5031536
OpenAlexW2490794901

What OpenQuestion 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 OpenQuestion graph.