Evidence map›Paper›PMID 35155480›Full record

ArticleFrontiers in medicine2021

The Effects of Donor-Recipient Age and Sex Compatibility in the Outcomes of Deep Anterior Lamellar Keratoplasties.

Hon Shing Ong, Nathalie Chiam, Hla Myint Htoon, Ashish Kumar, Anshu Arundhati, Jodhbir S Mehta

Open access · goldAbstract read
In one paragraph

Article in Frontiers in medicine, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 1 paper.

0numbers the graph read from it
0cells of the map it votes in
1citing papers in PubMed
0.6field-weighted citation impact, top 37% 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

1 citing paper in PubMed, 4 citations in OpenAlex.

  1. 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 1 country.

Hon Shing OngCorneal and External Diseases Department, Singapore National Eye Centre, Singapore, Singapore.
Nathalie ChiamCorneal and External Diseases Department, Singapore National Eye Centre, Singapore, Singapore.
Hla Myint HtoonSingapore Eye Research Institute, Singapore, Singapore.
Ashish KumarCorneal and External Diseases Department, Singapore National Eye Centre, Singapore, Singapore.
Anshu ArundhatiCorneal and External Diseases Department, Singapore National Eye Centre, Singapore, Singapore.
Jodhbir S MehtaCorneal and External Diseases Department, Singapore National Eye Centre, Singapore, Singapore.
Singapore National Eye Center · SGSingapore Eye Research Institute · SGDuke-NUS Medical School · SG

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

purposeCorneal transplantations are the commonest allogenic transplant surgeries performed worldwide. Transplantable grade donor cornea is a finite resource. There is thus an impetus for eye banks to optimize the use of each harvested cornea, and clinicians to minimize the risks of graft rejection and failure. With better survival and lower rejection rates, anterior lamellar keratoplasty has gained popularity as an alternative technique to full-thickness penetrating keratoplasty, for the treatment of corneal stromal diseases. This study evaluated the effects of donor-recipient age- and sex-matching on the outcomes of eyes that had undergone deep anterior lamellar keratoplasty (DALK) surgeries.

designObservational cross-sectional study (national corneal graft registry data). SUBJECTS: All DALK surgeries performed in a tertiary ophthalmic hospital over an 11-year period.

methodsTo analyse the effects of donor-recipient sex-matching, transplantations were classified as "presumed H-Y incompatible" (male donor to female recipient) or "presumed H-Y compatible" (all other donor-recipient sex combinations). For age-matching, differences in donor and recipient ages were calculated. Cox proportional hazards regressions were used to evaluate the influence of donor-recipient sex-matching and age-matching on graft failure and rejection.

main outcome measuresRates of graft failure and rejection within each group.

results401 eyes were included. 271 (67.6%) transplants were presumed H-Y compatible. 29 (7.2%) grafts failed and 9 (2.2%) grafts rejected. There were trends of lower hazard ratios (HRs) in graft failure and rejection in the presumed H-Y compatible group [HRs: 0.59 (95% CI 0.20-1.77,

conclusionIn eyes that had undergone DALK surgeries, no significant influence of donor-recipient sex- or age-matching on graft rejection and failure was observed. Without strong evidence and the limitations of obtaining sample sizes required for an adequately powered study, the benefits of sex- and age-matching of donors and recipients during graft allocation for DALK surgeries is currently inconclusive.

Indexed as

anterior lamellar keratoplastycorneal transplantationeye bankinggraft failuregraft rejectiongraft survivalHLA compatibilitykeratoplasty

Identifiers

PMID35155480
PMCPMC8828935
OpenAlexW4212919156

What OpenQuestion holds

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LicenceCC BY
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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.