Evidence map›Paper›PMID 25966638›Full record

ArticleEuropean journal of human genetics : EJHG2016

A novel phenotype in N-glycosylation disorders: Gillessen-Kaesbach-Nishimura skeletal dysplasia due to pathogenic variants in ALG9.

Emma Tham, Erik A Eklund, Anna Hammarsjö, Per Bengtson, Stefan Geiberger, Kristina Lagerstedt-Robinson, Helena Malmgren, Daniel Nilsson, Gintautas Grigelionis, Peter Conner and 9 more

Open access · bronzeAbstract read
In one paragraph

Article in European journal of human genetics : EJHG, 2016. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 22 papers, 2 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
22citing papers in PubMed, 2 pooled it
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

22 citing papers in PubMed, 2 syntheses or guidelines pooled it, 39 citations in OpenAlex.

  1. Pooled it
  2. Pooled it
  3. Endocrine Implications of Congenital Disorders of GlycosylationJournal of clinical research in pediatric endocrinology · 2026
    Review
  4. Article
  5. Article
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  8. Article
  9. Article
  10. Review
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  12. Review
  13. Journal of the American Society of Nephrology : JASN · 2019
    Article
  14. Article
  15. Recognizable phenotypes in CDG.Journal of inherited metabolic disease · 2018
    Review
  16. ALG9-CDG: New clinical case and review of the literature.Molecular genetics and metabolism reports · 2017
    Article
  17. What is new in CDG?Journal of inherited metabolic disease · 2017
    Review
  18. Article
  19. Article
  20. 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

19 authors at 4 institutions in 2 countries.

Emma ThamDepartment of Molecular Medicine and Surgery, Karolinska Institutet, Stockholm, Sweden.
Erik A EklundExperimental Pediatrics, Clinical Sciences, Lund University, Lund, Sweden.
Anna HammarsjöDepartment of Molecular Medicine and Surgery, Karolinska Institutet, Stockholm, Sweden.
Per BengtsonDepartment of Clinical Chemistry, part of University Health Care in Region Skåne, Lund, Sweden.
Stefan GeibergerDepartment of Pediatric Radiology, Karolinska University Hospital, Stockholm, Sweden.
Kristina Lagerstedt-RobinsonDepartment of Molecular Medicine and Surgery, Karolinska Institutet, Stockholm, Sweden.
Helena MalmgrenDepartment of Molecular Medicine and Surgery, Karolinska Institutet, Stockholm, Sweden.
Daniel NilssonDepartment of Molecular Medicine and Surgery, Karolinska Institutet, Stockholm, Sweden.
Gintautas GrigelionisDepartment of Molecular Medicine and Surgery, Karolinska Institutet, Stockholm, Sweden.
Peter ConnerDepartment of Obstetrics and Gynecology, Karolinska University Hospital, Stockholm, Sweden.
Peter LindgrenDepartment of Obstetrics and Gynecology, Karolinska University Hospital, Stockholm, Sweden.
Anna LindstrandDepartment of Molecular Medicine and Surgery, Karolinska Institutet, Stockholm, Sweden.
Anna WedellDepartment of Molecular Medicine and Surgery, Karolinska Institutet, Stockholm, Sweden.
Margareta AlbågeDepartment of Neuropediatrics, Karolinska University Hospital, Stockholm, Sweden.
Katarzyna ZielinskaExperimental Pediatrics, Clinical Sciences, Lund University, Lund, Sweden.
Ann NordgrenDepartment of Molecular Medicine and Surgery, Karolinska Institutet, Stockholm, Sweden.
Nikos PapadogiannakisSection for Perinatal Pathology, Department of Pathology, Karolinska University Hospital and Karolinska Institutet, Stockholm, Sweden.
Gen NishimuraDepartment of Pediatric Imaging, Tokyo Metropolitan Children's Medical Center, Tokyo, Japan.
Giedre GrigelionieneDepartment of Molecular Medicine and Surgery, Karolinska Institutet, Stockholm, Sweden.
Karolinska Institutet · SEKarolinska University Hospital · SELund University · SETokyo Metropolitan Children's Medical Center · JP

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

A rare lethal autosomal recessive syndrome with skeletal dysplasia, polycystic kidneys and multiple malformations was first described by Gillessen-Kaesbach et al and subsequently by Nishimura et al. The skeletal features uniformly comprise a round pelvis, mesomelic shortening of the upper limbs and defective ossification of the cervical spine. We studied two unrelated families including three affected fetuses with Gillessen-Kaesbach-Nishimura syndrome using whole-exome and Sanger sequencing, comparative genome hybridization and homozygosity mapping. All affected patients were shown to have a novel homozygous splice variant NM_024740.2: c.1173+2T>A in the ALG9 gene, encoding alpha-1,2-mannosyltransferase, involved in the formation of the lipid-linked oligosaccharide precursor of N-glycosylation. RNA analysis demonstrated skipping of exon 10, leading to shorter RNA. Mass spectrometric analysis showed an increase in monoglycosylated transferrin as compared with control tissues, confirming that this is a congenital disorder of glycosylation (CDG). Only three liveborn children with ALG9-CDG have been previously reported, all with missense variants. All three suffered from intellectual disability, muscular hypotonia, microcephaly and renal cysts, but none had skeletal dysplasia. Our study shows that some pathogenic variants in ALG9 can present as a lethal skeletal dysplasia with visceral malformations as the most severe phenotype. The skeletal features overlap with that previously reported for ALG3- and ALG12-CDG, suggesting that this subset of glycosylation disorders constitutes a new diagnostic group of skeletal dysplasias.

Indexed as

Abnormalities, MultipleAlternative SplicingAmino Acid SequenceBone Diseases, DevelopmentalCentral Nervous System DiseasesChildComparative Genomic HybridizationExomeFemaleGlycosylationHumansMaleMannosyltransferasesMembrane ProteinsMutation, MissenseNerve DegenerationALG9 protein, humanMannosyltransferasesMembrane ProteinsProtein Isoforms

Identifiers

PMID25966638
PMCPMC4717212
OpenAlexW1763748977

What OpenQuestion holds

Textmetadata
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.