Evidence map›Paper›PMID 39855191›Full record

ArticleCell reports. Medicine2025

Independent genetic strategies define the scope and limits of CDKL5 deficiency disorder reversal.

Xie Song, Zijie Xia, Dayne Martinez, Bing Xu, Zachary Spritzer, Yanjie Zhang, Erin Nugent, Yugong Ho, Barbara Terzic, Zhaolan Zhou

Abstract read
In one paragraph

Article in Cell reports. Medicine, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 4 papers.

0numbers the graph read from it
0cells of the map it votes in
4citing 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

4 citing papers in PubMed.

  1. Article
  2. Visual Recovery Reflects Cortical MeCP2 Sensitivity in Rett Syndrome.Annals of clinical and translational neurology · 2026
    Article
  3. Article
  4. Safety and efficacy of Igk-TATk-CDKL5 gene therapy in mosaic CDKL5 deficiency.Neurotherapeutics : the journal of the American Society for Experimental NeuroTherapeutics · 2025
    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

10 authors.

Xie SongDepartment of Genetics, University of Pennsylvania Perelman School of Medicine, Philadelphia, PA 19102, USA; Department of Hepatobiliary Surgery, Shandong Provincial Hospital Affiliated to Shandong First Medical University, Jinan, Shandong 250000, China.
Zijie XiaDepartment of Genetics, University of Pennsylvania Perelman School of Medicine, Philadelphia, PA 19102, USA.
Dayne MartinezDepartment of Genetics, University of Pennsylvania Perelman School of Medicine, Philadelphia, PA 19102, USA.
Bing XuDepartment of Genetics, University of Pennsylvania Perelman School of Medicine, Philadelphia, PA 19102, USA; Department of Urology, The First Affiliated Hospital of Shandong First Medical University & Shandong Qianfoshan Hospital, Shandong Medicine and Health Key Laboratory of Organ Transplantation and Nephrosis, Shandong Institute of Nephrology, Jinan, Shandong 250000, China.
Zachary SpritzerDepartment of Genetics, University of Pennsylvania Perelman School of Medicine, Philadelphia, PA 19102, USA.
Yanjie ZhangDepartment of Genetics, University of Pennsylvania Perelman School of Medicine, Philadelphia, PA 19102, USA.
Erin NugentDepartment of Genetics, University of Pennsylvania Perelman School of Medicine, Philadelphia, PA 19102, USA.
Yugong HoDepartment of Genetics, University of Pennsylvania Perelman School of Medicine, Philadelphia, PA 19102, USA.
Barbara TerzicDepartment of Genetics, University of Pennsylvania Perelman School of Medicine, Philadelphia, PA 19102, USA.
Zhaolan ZhouDepartment of Genetics, University of Pennsylvania Perelman School of Medicine, Philadelphia, PA 19102, USA; Department of Neuroscience, University of Pennsylvania Perelman School of Medicine, Philadelphia, PA 19102, USA; The Epigenetics Institute, University of Pennsylvania, Philadelphia, PA 19102, USA. Electronic address: zhaolan@pennmedicine.upenn.edu.

Funding

The Intellectual and Developmental Disabilities Research Center (IDDRC) at CHOP/PennP50HD105354 · NICHD · CHILDREN'S HOSP OF PHILADELPHIA · PI ERIC D MARSH, ROBERT Thomas SCHULTZ · 2021 to 2026
$9.2M
Understanding the Pathogenic Mechanisms of Rett SyndromeR01NS081054 · NINDS · UNIVERSITY OF PENNSYLVANIA · PI Zhaolan Zhou · 2013 to 2026
$5.6M
Pathogenic Studies of CDKL5 DisorderR01NS102731 · NINDS · UNIVERSITY OF PENNSYLVANIA · PI ZHOU, ZHAOLAN · 2018 to 2022
$2.7M
NICHD NIH HHS P50 HD105354NINDS NIH HHS R01 NS081054NINDS NIH HHS R01 NS102731
6 · The paper itself

Abstract

Cyclin-dependent kinase-like 5 (CDKL5) deficiency disorder (CDD) is a neurodevelopmental syndrome caused by mutations in the X-linked CDKL5 gene. The early onset of CDD suggests that CDKL5 is essential during development, but post-developmental re-expression rescues multiple CDD-related phenotypes in hemizygous male mice. Since most patients are heterozygous females, studies in clinically relevant female models are essential. Here, we systematically compare phenotype reversal across age and sex using two independent mouse models of CDD. We find that early re-activation of endogenous Cdkl5 in heterozygous females reverses most phenotypes, except working memory. Later re-expression improves several traits but has limited effects on cognitive function. Seizure prevention is more effective with early intervention in heterozygous females but becomes limited after seizure onset. These findings demonstrate the robust potential of CDKL5 re-expression to reverse CDD-related phenotypes in both sexes while underscoring the critical impact of age and disease stage in designing clinical trials.

Indexed as

Epilepsies, MyoclonicEpileptic SyndromesProtein Serine-Threonine KinasesSpasms, InfantileAnimalsDisease Models, AnimalFemaleHeterozygoteHumansMaleMiceMice, Inbred C57BLPhenotypeSeizuresCDKL5 protein, mouseProtein Serine-Threonine Kinasesbehavioral phenotypeCDDCDKL5 deficiency disorderclinical trial designepilepsygenetic reversallearning and memorymouse model

Identifiers

PMID39855191
PMCPMC11866500

What OpenQuestion holds

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LicenceCC BY-NC
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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.