Evidence map›Paper›PMID 19361779›Full record

ArticleAmerican journal of human genetics2009

Null mutations in LTBP2 cause primary congenital glaucoma.

Manir Ali, Martin McKibbin, Adam Booth, David A Parry, Payal Jain, S Amer Riazuddin, J Fielding Hejtmancik, Shaheen N Khan, Sabika Firasat, Mike Shires and 14 more

Open access · bronzeAbstract read
In one paragraph

Article in American journal of human genetics, 2009. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 169 papers, 7 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
169citing papers in PubMed, 7 pooled it
19.6field-weighted citation impact, top 1% 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

169 citing papers in PubMed, 7 syntheses or guidelines pooled it, 322 citations in OpenAlex.

  1. Pooled it
  2. Pooled it
  3. Surgical interventions for primary congenital glaucoma.The Cochrane database of systematic reviews · 2020
    Pooled it
  4. Pooled it
  5. Pooled it
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  13. TGF-β2/OPTN/FOXC1/BBA advances · 2026
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  15. The Effects of SNPs in theVeterinary medicine international · 2026
    Article
  16. Article
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  19. ProteinMolecules (Basel, Switzerland) · 2025
    Review
  20. Molecular vision · 2025
    Article

109 more citing papers are in PubMed but not listed here.

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

24 authors at 11 institutions in 6 countries.

Manir AliLeeds Institute of Molecular Medicine, University of Leeds, Leeds LS9 7TF, UK. medma@leeds.ac.uk
Martin McKibbin
Adam Booth
David A Parry
Payal Jain
S Amer Riazuddin
J Fielding Hejtmancik
Shaheen N Khan
Sabika Firasat
Mike Shires
David F Gilmour
Katherine Towns
Anna-Louise Murphy
Dimitar Azmanov
Ivailo Tournev
Sylvia Cherninkova
Hussain Jafri
Yasmin Raashid
Carmel Toomes
Jamie Craig
David A Mackey
Luba Kalaydjieva
Sheikh Riazuddin
Chris F Inglehearn
University of Leeds · GBUniversity of the Punjab · PKCentre for Research and Development · ZWMedical University of Sofia · BGSt James's University Hospital · GBCentre of Excellence in Molecular Biology · PKFlinders Medical Centre · AUKing Edward Medical University · PKNational Eye Institute · USUniversity of Engineering and Technology Lahore · PKUniversity of Western Australia · AU

Funding

Inherited Ocular DiseasesZIAEY000272 · NEI · NATIONAL EYE INSTITUTE · PI HEJTMANCIK, JAMES F. · 2009 to 2025
$27.0M
INHERITED OCULAR DISEASESZ01EY000272 · NEI · NATIONAL EYE INSTITUTE · PI HEJTMANCIK, JAMES F. · 1991 to 2008
$4.8M
Medical Research Council G0501050
6 · The paper itself

Abstract

Primary congenital glaucoma (PCG) is an autosomal-recessive condition characterized by high intraocular pressure (IOP), usually within the first year of life, which potentially could lead to optic nerve damage, globe enlargement, and permanent loss of vision. To date, PCG has been linked to three loci: 2p21 (GLC3A), for which the responsible gene is CYP1B1, and 1p36 (GLC3B) and 14q24 (GLC3C), for which the genes remain to be identified. Here we report that null mutations in LTBP2 cause PCG in four consanguineous families from Pakistan and in patients of Gypsy ethnicity. LTBP2 maps to chromosome 14q24.3 but is around 1.3 Mb proximal to the documented GLC3C locus. Therefore, it remains to be determined whether LTBP2 is the GLC3C gene or whether a second adjacent gene is also implicated in PCG. LTBP2 is the largest member of the latent transforming growth factor (TGF)-beta binding protein family, which are extracellular matrix proteins with multidomain structure. It has homology to fibrillins and may have roles in cell adhesion and as a structural component of microfibrils. We confirmed localization of LTBP2 in the anterior segment of the eye, at the ciliary body, and particularly the ciliary process. These findings reveal that LTBP2 is essential for normal development of the anterior chamber of the eye, where it may have a structural role in maintaining ciliary muscle tone.

Indexed as

Chromosome MappingCiliary BodyConsanguinityGlaucomaHumansLatent TGF-beta Binding ProteinsMutationPedigreeLatent TGF-beta Binding ProteinsLTBP2 protein, human

Identifiers

PMID19361779
PMCPMC2680998
OpenAlexW1986496846

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.