Evidence map›Paper›PMID 34087052›Full record

ReviewAmerican journal of medical genetics. Part A2021

Proximal variants in CCND2 associated with microcephaly, short stature, and developmental delay: A case series and review of inverse brain growth phenotypes.

Filomena Pirozzi, Benson Lee, Nicole Horsley, Deepika D Burkardt, William B Dobyns, John M Graham, Maria L Dentici, Claudia Cesario, Jens Schallner, Joseph Porrmann and 3 more

Open access · greenAbstract readCase ReportsReview
In one paragraph

Review in American journal of medical genetics. Part A, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 18 papers.

0numbers the graph read from it
0cells of the map it votes in
18citing papers in PubMed
5.2field-weighted citation impact, top 4% 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, 33 citations in OpenAlex.

  1. Cytoplasmic cyclin D1 modulates brain cortex development.Cellular and molecular life sciences : CMLS · 2026
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  16. GPR41 Regulates the Proliferation of BRECs via the PIK3-AKT-mTOR Pathway.International journal of molecular sciences · 2023
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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

13 authors at 8 institutions in 3 countries.

Filomena PirozziCenter for Integrative Brain Research, Seattle Children's Research Institute, Seattle, Washington, USA.ORCID 0000-0002-7603-662X
Benson LeeDivision of Medical Genetics, Department of Medicine, Veterans Affairs Greater Los Angeles Healthcare System, Los Angeles, California, USA.
Nicole HorsleyCenter for Integrative Brain Research, Seattle Children's Research Institute, Seattle, Washington, USA.
Deepika D BurkardtNational Human Genome Research Institute, National Institutes of Health, Bethesda, Maryland, USA.ORCID 0000-0002-1743-7503
William B DobynsDivision of Genetics and Metabolism, Department of Pediatrics, University of Minnesota, Minneapolis, Minnesota, USA.ORCID 0000-0002-7681-2844
John M GrahamMedical Genetics Institute, Cedars-Sinai Medical Center, David Geffen School of Medicine at UCLA, Los Angeles, California, USA.ORCID 0000-0003-4297-1078
Maria L DenticiMedical Genetics Unit, Academic Department of Pediatrics, Bambino Gesù Children's Hospital, IRCSS, Rome, Italy.ORCID 0000-0002-9505-5906
Claudia CesarioTranslational Cytogenomics Research Unit, Bambino Gesù Children's Hospital, IRCCS, Rome, Italy.
Jens SchallnerDepartment of Neuropediatrics, School of Medicine, Carl Gustav Carus, TU Dresden, Dresden, Germany.
Joseph PorrmannInstitute for Clinical Genetics, University Hospital, TU Dresden, Dresden, Germany.
Nataliya Di DonatoInstitute for Clinical Genetics, University Hospital, TU Dresden, Dresden, Germany.ORCID 0000-0001-9439-4677
Pedro A Sanchez-LaraMedical Genetics Institute, Cedars-Sinai Medical Center, David Geffen School of Medicine at UCLA, Los Angeles, California, USA.ORCID 0000-0003-1181-7828
Ghayda M MirzaaCenter for Integrative Brain Research, Seattle Children's Research Institute, Seattle, Washington, USA.ORCID 0000-0003-2648-7657
Bambino Gesù Children's Hospital · ITCedars-Sinai Medical Center · USCenter for Systems Biology Dresden · DENational Institutes of Health · USUniversity Hospital Carl Gustav Carus · DEUniversity of Minnesota · USUniversity of Washington · USVA Greater Los Angeles Healthcare System · US

Funding

Mechanisms of Brain Dysmorphology in MN1 C-Terminal Truncation Syndrome, a Novel Intellectual Developmental Disability Disorder P50HD103524 · NICHD · UNIVERSITY OF WASHINGTON · PI Sandra E Juul · 2020 to 2026
$9.9M
Megalencephaly and segmental brain overgrowth in humansR01NS092772 · NINDS · SEATTLE CHILDREN'S HOSPITAL · PI MILLEN, KATHLEEN JOYCE · 2015 to 2019
$3.3M
NICHD NIH HHS P50 HD103524NINDS NIH HHS R01 NS092772
6 · The paper itself

Abstract

Cyclin D2 (CCND2) is a critical cell cycle regulator and key member of the cyclin D2-CDK4 (DC) complex. De novo variants of CCND2 clustering in the distal part of the protein have been identified as pathogenic causes of brain overgrowth (megalencephaly, MEG) and severe cortical malformations in children including the megalencephaly-polymicrogyria-polydactyly-hydrocephalus (MPPH) syndrome. Megalencephaly-associated CCND2 variants are localized to the terminal exon and result in accumulation of degradation-resistant protein. We identified five individuals from three unrelated families with novel variants in the proximal region of CCND2 associated with microcephaly, mildly simplified cortical gyral pattern, symmetric short stature, and mild developmental delay. Identified variants include de novo frameshift variants and a dominantly inherited stop-gain variant segregating with the phenotype. This is the first reported association between proximal CCND2 variants and microcephaly, to our knowledge. This series expands the phenotypic spectrum of CCND2-related disorders and suggests that distinct classes of CCND2 variants are associated with reciprocal effects on human brain growth (microcephaly and megalencephaly due to possible loss or gain of protein function, respectively), adding to the growing paradigm of inverse phenotypes due to dysregulation of key brain growth genes.

Indexed as

MutationAdolescentAdultBrainChildCyclin D2FemaleHumansHydrocephalusInfantMaleMegalencephalyPolydactylyPolymicrogyriaCCND2 protein, humanCyclin D2cyclin D2inverse phenotypesmegalencephalymegalencephaly-polymicrogyria-polydactyly-hydrocephalus syndrome (MPPH syndrome)microcephaly

Identifiers

PMID34087052
PMCPMC8725575
OpenAlexW3164718582

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.