Evidence map›Paper›PMID 25018621›Full record

ArticleMolecular vision2014

Mutational spectrum of the CYP1B1 gene in Pakistani patients with primary congenital glaucoma: novel variants and genotype-phenotype correlations.

Shakeel Ahmed Sheikh, Ali Muhammad Waryah, Ashok Kumar Narsani, Hina Shaikh, Imtiaz Ahmed Gilal, Khairuddin Shah, Muhammad Qasim, Azam Iqbal Memon, Pitambar Kewalramani, Naila Shaikh

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In one paragraph

Article in Molecular vision, 2014. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 18 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
18citing papers in PubMed, 1 pooled it
1.7field-weighted citation impact, top 17% 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, 1 synthesis or guideline pooled it, 26 citations in OpenAlex.

  1. Pooled it
  2. Article
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  4. Impact ofSaudi journal of biological sciences · 2023
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  5. Genetic heterogeneity of primary open-angle glaucoma in Pakistan.Saudi journal of biological sciences · 2023
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  7. Mutational analysis ofSaudi journal of biological sciences · 2022
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  10. SVEP1 as a Genetic Modifier of TEK-Related Primary Congenital Glaucoma.Investigative ophthalmology & visual science · 2020
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  11. Review
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  13. Two novel variants inInternational journal of ophthalmology · 2019
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  14. Analysis ofJournal of pediatric genetics · 2017
    Review
  15. Article
  16. Article
  17. Article
  18. Investigation ofMiddle East African journal of ophthalmology
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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

10 authors at 1 institution in 1 country.

Shakeel Ahmed SheikhMolecular Biology and Genetics Department, Medical Research Center, Liaquat University of Medical and Health Sciences, Jamshoro, Pakistan.
Ali Muhammad WaryahMolecular Biology and Genetics Department, Medical Research Center, Liaquat University of Medical and Health Sciences, Jamshoro, Pakistan ; Department of Pathology, Liaquat University of Medical and Health Sciences, Jamshoro, Pakistan.
Ashok Kumar NarsaniDepartment of Ophthalmology, Liaquat University of Medical and Health Sciences, Hyderabad, Pakistan.
Hina ShaikhMolecular Biology and Genetics Department, Medical Research Center, Liaquat University of Medical and Health Sciences, Jamshoro, Pakistan.
Imtiaz Ahmed GilalDepartment of Ophthalmology, Liaquat University of Medical and Health Sciences, Hyderabad, Pakistan.
Khairuddin ShahDepartment of Ophthalmology, Liaquat University of Medical and Health Sciences, Hyderabad, Pakistan.
Muhammad QasimDepartments of Bioinformatics & Biotechnology, Government College University Faisalabad, Pakistan.
Azam Iqbal MemonMolecular Biology and Genetics Department, Medical Research Center, Liaquat University of Medical and Health Sciences, Jamshoro, Pakistan.
Pitambar KewalramaniDepartment of Ophthalmology, Liaquat University of Medical and Health Sciences, Hyderabad, Pakistan.
Naila ShaikhMolecular Biology and Genetics Department, Medical Research Center, Liaquat University of Medical and Health Sciences, Jamshoro, Pakistan ; Department of Pathology, Liaquat University of Medical and Health Sciences, Jamshoro, Pakistan.
Liaquat University of Medical & Health Sciences · PK

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

purposeThis study aimed to investigate the role of CYP1B1 mutations in primary congenital glaucoma (PCG) in Pakistani patients.

methodsAfter consent was received, 20 families with at least more than one member affected with primary congenital glaucoma were enrolled in the study. The disease was confirmed with standard ophthalmological investigations. Genomic DNA was extracted from whole blood for localization of linkage and sequencing. Bioinformatics tools were used to assess the predicted pathological role of novel variants.

resultsTen out of 20 families (50%, 10/20) showed homozygosity with CYP1B1-linked short tandem repeat (STR) markers. On direct sequencing of the CYP1B1 gene in the linked families, six mutations, including two novel pathogenic variants, were identified. p. R390H was the most frequently found mutation in five families (50%, 5/10), whereas c.868_869insC, p.E229K, and p.A115P were found once in three families. Two novel mutations, a missense mutation (p.G36D) and an in-frame deletion mutation (p.G67-A70del), were segregated with disease phenotype in two families. Age of disease onset was congenital in all mutations; however, disease severity and response to clinical interventions varied among the mutations and families. Haplotype analysis using five polymorphisms revealed a distinct haplotype for a common mutation.

conclusionsThis is the largest cohort of Pakistani patients with PCG to be genetically screened for CYP1B1 mutations. Identifying common mutation and genotype-phenotype correlations may help in genetic testing and better prognosis for the disease. Novel mutations identified in the study may help in better understanding the pathophysiology of CYP1B1-associated glaucoma.

Indexed as

Genetic Association StudiesAdultAmino Acid SequenceAryl Hydrocarbon HydroxylasesCytochrome P-450 CYP1B1ElectroretinographyFemaleGlaucomaHaplotypesHomozygoteHumansMaleMolecular Sequence DataMutationPakistanPedigreeAryl Hydrocarbon HydroxylasesCYP1B1 protein, humanCytochrome P-450 CYP1B1

Identifiers

PMID25018621
PMCPMC4087121
OpenAlexW5145305

What OpenQuestion holds

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LicenceCC BY-NC-ND
Read underepoch 390

Registered trials

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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.