Evidence map›Paper›PMID 34477286›Full record

ArticleAmerican journal of medical genetics. Part A2021

Expanding the phenotype: Four new cases and hope for treatment in Bachmann-Bupp syndrome.

Elizabeth A VanSickle, Julianne Michael, André S Bachmann, Surender Rajasekaran, Jeremy W Prokop, Ruben Kuzniecky, Floris C Hofstede, Katharina Steindl, Anita Rauch, Mark H Lipson and 1 more

Erratum issuedOpen access · hybridAbstract read
In one paragraph

Article 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. An erratum has been issued. Cited by 10 papers.

0numbers the graph read from it
0cells of the map it votes in
10citing papers in PubMed
0.9field-weighted citation impact, top 27% 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

10 citing papers in PubMed, 15 citations in OpenAlex.

  1. Review
  2. Polyamine metabolism in prostate cancer.Current opinion in oncology · 2025
    Review
  3. Structural Insights into the Mechanisms Underlying Polyaminopathies.International journal of molecular sciences · 2024
    Review
  4. Bachmann-Bupp syndrome and treatment.Developmental medicine and child neurology · 2024
    Review
  5. Article
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4 · The record

Corrections and comments

5 · Who and what money

Authors and funding

11 authors at 6 institutions in 3 countries.

Elizabeth A VanSickleDivision of Medical Genetics and Genomics, Spectrum Health and Helen DeVos Children's Hospital, Grand Rapids, Michigan, USA.ORCID 0000-0001-5504-9248
Julianne MichaelDivision of Medical Genetics and Genomics, Spectrum Health and Helen DeVos Children's Hospital, Grand Rapids, Michigan, USA.
André S BachmannInternational Center for Polyamine Disorders, Grand Rapids, Michigan, USA.ORCID 0000-0002-6510-8560
Surender RajasekaranDivision of Medical Genetics and Genomics, Spectrum Health and Helen DeVos Children's Hospital, Grand Rapids, Michigan, USA.ORCID 0000-0002-4430-006X
Jeremy W ProkopDepartment of Pediatrics and Human Development, College of Human Medicine, Michigan State University, Grand Rapids, Michigan, USA.ORCID 0000-0002-1818-9695
Ruben KuznieckyDepartment of Neurology-Northwell Health, Zucker Hofstra School of Medicine, New York, New York, USA.ORCID 0000-0002-3170-150X
Floris C HofstedeDepartment of General Pediatrics, Wilhelmina Children's Hospital, University Medical Centre Utrecht, Utrecht, The Netherlands.ORCID 0000-0002-5140-9119
Katharina SteindlDepartment of General Pediatrics, Wilhelmina Children's Hospital, Institute of Medical Genetics, University of Zurich, Zurich, Switzerland.ORCID 0000-0002-4425-3072
Anita RauchDepartment of General Pediatrics, Wilhelmina Children's Hospital, Institute of Medical Genetics, University of Zurich, Zurich, Switzerland.ORCID 0000-0003-2930-3163
Mark H LipsonGenetics Department, Kaiser Permanente, Sacramento, California, USA.
Caleb P BuppDivision of Medical Genetics and Genomics, Spectrum Health and Helen DeVos Children's Hospital, Grand Rapids, Michigan, USA.ORCID 0000-0003-4255-0396
Spectrum Health · USGrand Rapids Community College · USUniversity of Zurich · CHKaiser Permanente · USNorthwell Health · USWilhelmina Children's Hospital · NL

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Bachmann-Bupp syndrome (BABS) is a rare syndrome caused by gain-of-function variants in the C-terminus of ornithine decarboxylase (ODC coded by the ODC1 gene). BABS is characterized by developmental delay, macrocephaly, macrosomia, and an unusual pattern of non-congenital alopecia. Recent diagnosis of four more BABS patients provides further characterization of the phenotype of this syndrome including late-onset seizures in the oldest reported patient at 23 years of age, representing the first report for this phenotype in BABS. Neuroimaging abnormalities continue to be an inconsistent feature of the syndrome. This may be related to the yet unknown impact of ODC/polyamine dysregulation on the developing brain in this syndrome. Variants continue to cluster, providing support to a universal biochemical mechanism related to elevated ODC protein, enzyme activity, and abnormalities in polyamine levels. Recommendations for medical management can now be suggested as well as the potential for targeted molecular or metabolic testing when encountering this unique phenotype. The natural history of this syndrome will evolve with difluoromethylornithine (DFMO) therapy and raise new questions for further study and understanding.

Indexed as

AdolescentAdultAlopeciaBrainChildChild, PreschoolDevelopmental DisabilitiesDicarboxylic Acid TransportersEflornithineFemaleGenetic Predisposition to DiseaseHumansInfantInfant, NewbornMaleMegalencephalyDicarboxylic Acid TransportersEflornithineMitochondrial Membrane Transport ProteinsPolyaminesSLC25A21 protein, humanalopeciaBachmann-Bupp syndromeDFMOmacrocephalyODC1polyamines

Identifiers

PMID34477286
PMCPMC9292803
OpenAlexW3198267536

What OpenQuestion holds

Textmetadata
LicenceCC BY
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.