Evidence map›Paper›PMID 34338329›Full record

ArticleAnnals of neurology2021

Synergistic Deoxynucleoside and Gene Therapies for Thymidine Kinase 2 Deficiency.

Carlos Lopez-Gomez, Maria J Sanchez-Quintero, Eung Jeon Lee, Giulio Kleiner, Saba Tadesse, Jun Xie, Hasan Orhan Akman, Guangping Gao, Michio Hirano

Erratum issuedOpen access · greenAbstract read
In one paragraph

Article in Annals of neurology, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. An erratum has been issued. Cited by 18 papers.

0numbers the graph read from it
0cells of the map it votes in
18citing papers in PubMed
2.9field-weighted citation impact, top 9% 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

18 citing papers in PubMed, 25 citations in OpenAlex.

  1. Review
  2. Article
  3. Gene therapy and mRNA drugs approach for mitochondrial OXPHOS deficiencies.Molecular therapy : the journal of the American Society of Gene Therapy · 2025
    Review
  4. Review
  5. Therapies for Mitochondrial Disease: Past, Present, and Future.Journal of inherited metabolic disease · 2025
    Review
  6. Advances in Management of Mitochondrial Myopathies.International journal of molecular sciences · 2025
    Review
  7. Article
  8. Review
  9. Article
  10. Observational
  11. A clinical approach to diagnosis and management of mitochondrial myopathies.Neurotherapeutics : the journal of the American Society for Experimental NeuroTherapeutics · 2024
    Review
  12. Review
  13. Article
  14. Current advances in gene therapy of mitochondrial diseases.Journal of translational medicine · 2022
    Review
  15. Review
  16. Review
  17. Review
  18. Review
4 · The record

Corrections and comments

5 · Who and what money

Authors and funding

9 authors at 2 institutions in 2 countries.

Carlos Lopez-GomezH. Houston Merritt Neuromuscular Research Center, Department of Neurology, Columbia University Irving Medical Center, New York, NY.
Maria J Sanchez-QuinteroH. Houston Merritt Neuromuscular Research Center, Department of Neurology, Columbia University Irving Medical Center, New York, NY.
Eung Jeon LeeH. Houston Merritt Neuromuscular Research Center, Department of Neurology, Columbia University Irving Medical Center, New York, NY.
Giulio KleinerH. Houston Merritt Neuromuscular Research Center, Department of Neurology, Columbia University Irving Medical Center, New York, NY.
Saba TadesseH. Houston Merritt Neuromuscular Research Center, Department of Neurology, Columbia University Irving Medical Center, New York, NY.
Jun XieMicrobiology and Physiological Systems, University of Massachusetts Medical Center, Worcester, MA.ORCID https://orcid.org/0000-0001-9565-1567
Hasan Orhan AkmanH. Houston Merritt Neuromuscular Research Center, Department of Neurology, Columbia University Irving Medical Center, New York, NY.
Guangping GaoMicrobiology and Physiological Systems, University of Massachusetts Medical Center, Worcester, MA.
Michio HiranoH. Houston Merritt Neuromuscular Research Center, Department of Neurology, Columbia University Irving Medical Center, New York, NY.ORCID https://orcid.org/0000-0002-7070-7402
Columbia University Irving Medical Center · USUniversity of Massachusetts Chan Medical School · US

Funding

THERAPEUTIC APPROACHES IN MODELS OF MITOCHONDRIAL DIS.P01HD032062 · NICHD · COLUMBIA UNIVERSITY HEALTH SCIENCES · PI NAINI, ALI B. · 1995 to 2014
$24.4M
The North American Mitochondrial Disease Consortium (NAMDC)U54NS078059 · NINDS · COLUMBIA UNIVERSITY HEALTH SCIENCES · PI HIRANO, MICHIO · 2011 to 2023
$17.5M
Tech-CoreP01HD080642 · NICHD · COLUMBIA UNIVERSITY HEALTH SCIENCES · PI QUINZII, CATARINA M. · 2014 to 2018
$7.8M
NICHD NIH HHS P01 HD032062NICHD NIH HHS P01 HD080642NINDS NIH HHS U54 NS078059
6 · The paper itself

Abstract

objectiveAutosomal recessive human thymidine kinase 2 (TK2) mutations cause TK2 deficiency, which typically manifests as a progressive and fatal mitochondrial myopathy in infants and children. Treatment with pyrimidine deoxynucleosides deoxycytidine and thymidine ameliorates mitochondrial defects and extends the lifespan of Tk2 knock-in mouse (Tk2

methodsWe generated pAAVsc CB6 PI vectors containing human TK2 cDNA (TK2). Adeno-associated virus (AAV)-TK2 was administered to Tk2

resultsAAV9 delivery of human TK2 cDNA to Tk2

interpretationOur data indicate that AAV-TK2 gene therapy as well as combination deoxynucleoside and gene therapies is more effective in Tk2

Indexed as

Genetic TherapyAnimalsCompassionate Use TrialsDNA, MitochondrialHumansMiceMitochondriaMitochondrial MyopathiesMutationThymidineThymidine KinaseDNA, MitochondrialThymidineThymidine Kinasethymidine kinase 2

Identifiers

PMID34338329
PMCPMC9307066
OpenAlexW3192421615

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.