Evidence map›Paper›PMID 33188265›Full record

SynthesisEuropean journal of human genetics : EJHG2021

The genetics of rod-cone dystrophy in Arab countries: a systematic review.

Lama Jaffal, Hawraa Joumaa, Zamzam Mrad, Christina Zeitz, Isabelle Audo, Said El Shamieh

Open access · bronzeAbstract readSystematic Review
In one paragraph

Synthesis in European journal of human genetics : EJHG, 2021. 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
0.9field-weighted citation impact, top 26% 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, 27 citations in OpenAlex.

  1. Pooled it
  2. Article
  3. The mutational and clinical spectrum ofFrontiers in genetics · 2026
    Article
  4. Article
  5. Article
  6. Review
  7. Article
  8. International journal of ophthalmology · 2025
    Article
  9. Article
  10. Article
  11. Article
  12. Article
  13. Article
  14. Review
  15. The research output of rod-cone dystrophy genetics.Orphanet journal of rare diseases · 2022
    Review
  16. Article
  17. Article
  18. 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

6 authors at 3 institutions in 4 countries.

Lama JaffalDepartment of Biological and Environmental Sciences, Faculty of Science, Beirut Arab University, Debbieh, 1107 2809, Lebanon.
Hawraa Joumaa *Rammal Hassan Rammal Research Laboratory, Physiotoxicity (PhyTox), Faculty of Sciences, Lebanese University, Nabatieh, 1700, Lebanon.
Zamzam Mrad *Rammal Hassan Rammal Research Laboratory, Physiotoxicity (PhyTox), Faculty of Sciences, Lebanese University, Nabatieh, 1700, Lebanon.
Christina ZeitzSorbonne Universités, INSERM, CNRS, Institut de la Vision, Paris, 75012, France.
Isabelle AudoSorbonne Universités, INSERM, CNRS, Institut de la Vision, Paris, 75012, France.ORCID http://orcid.org/0000-0003-0698-5309
Said El ShamiehDepartment of Medical Laboratory Technology, Faculty of Health Sciences, Beirut Arab University, Beirut, 1107 2809, Lebanon. s.elshamieh@bau.edu.lb.ORCID http://orcid.org/0000-0002-8522-0445
Lebanese University · LBCentre National de la Recherche Scientifique · FRBeirut Arab University · LB

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Since a substantial difference in the prevalence of genetic causes of rod-cone dystrophy (RCD) was found among different populations, we conducted a systematic review of the genetic findings associated with RCD in Arab countries. Of the 816 articles retrieved from PubMed, 31 studies conducted on 407 participants from 11 countries were reviewed. Next-generation sequencing (NGS) was the most commonly used technique (68%). Autosomal recessive pattern was the most common pattern of inheritance (97%) and half of the known genes associated with RCD (32/63) were identified. In the Kingdom of Saudi Arabia, in addition to RP1 (20%) and TULP1 (20%), gene defects in EYS (8%) and CRB1 (7%) were also prevalently mutated. In North Africa, the main gene defects were in MERTK (18%) and RLBP1 (18%). Considering all countries, RP1 and TULP1 remained the most prevalently mutated. Variants in TULP1, RP1, EYS, MERTK, and RLBP1 were the most prevalent, possibly because of founder effects. On the other hand, only ten Individuals were found to have dominant or X-linked RCD. This is the first time a catalog of RCD genetic variations has been established in subjects from the Arabi countries. Although the last decade has seen significant interest, expertise, and an increase in RCD scientific publication, much work needs to be conducted.

Indexed as

MutationCarrier Proteinsc-Mer Tyrosine KinaseCone-Rod DystrophiesEye ProteinsFemaleGene FrequencyGenetic HeterogeneityGenetic TestingHumansMaleMicrotubule-Associated ProteinsMiddle East11-cis-retinal-binding proteinCarrier Proteinsc-Mer Tyrosine KinaseEye ProteinsMERTK protein, humanMicrotubule-Associated ProteinsRP1 protein, humanTULP1 protein, human

Identifiers

PMID33188265
PMCPMC8187393
OpenAlexW3098714695

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.