ID

45209

Beschreibung

Principal Investigator: Natalie Afshari, MD, Duke University, Durham, NC, USA MeSH: Fuchs' Endothelial Dystrophy https://www.ncbi.nlm.nih.gov/projects/gap/cgi-bin/study.cgi?study_id=phs000421 Fuchs' Endothelial Corneal Dystrophy (FECD) is a common disease that results in loss of vision associated with progressive corneal edema and loss of corneal transparency. In the initial stages of the disease, excrescences on Descemet's membrane with the appearance of an abnormal posterior collagenous layer, result in the clinical and pathologic appearance of guttae. Corneal edema ensues as endothelial function is compromised that may result in stromal edema, epithelial edema, and painful bullous keratopathy. Penetrating or endothelial keratoplasty is the only definitive treatment, with palliative care the only option prior to surgery. The pathophysiology underlying FECD, particularly in the common cases that affect older individuals, remains unknown, with a genetic predisposition being reported as the single best predictor of disease. Three independent groups funded by the National Eye Institute (NEI), with well-established programs in the genetics of FECD, conducted a genome-wide association study of FECD. The collaboration comprised investigators from Case Western University (CWRU), Duke University (DUEC), and Johns Hopkins University (JHU). CWRU and DUEC contributed samples that were genotyped at CIDR for the GWAS. Johns Hopkins University (JHU) provided samples for the replication phase of the study, where their data are not listed in dbGaP. Cohorts of FECD cases and controls were assembled. Synchronization of clinical and coded data was performed to unify the information across centers. The family history, clinical, demographic information, and genome-wide genotype data for samples from CWRU and DUEC were deposited in dbGaP.

Link

dbGaP study = phs000421

Stichworte

  1. 04.08.22 04.08.22 - Adrian Schulz
  2. 12.10.22 12.10.22 - Adrian Schulz
Rechteinhaber

Natalie Afshari, MD, Duke University, Durham, NC, USA

Hochgeladen am

12. Oktober 2022

DOI

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Lizenz

Creative Commons BY 4.0

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dbGaP phs000421 A Genome-Wide Association Study of Fuchs' Endothelial Corneal Dystrophy (FECD)

Eligibility Criteria

Inclusion and exclusion criteria
Beschreibung

Inclusion and exclusion criteria

Alias
UMLS CUI [1,1]
C1512693
UMLS CUI [2,1]
C0680251
All three sites used a modified Krachmer scale for assessing disease severity in *cases*. Because each group modified Krachmer's grading scheme slightly differently, but otherwise had cornea fellowship trained observers using similar instrumentation (slit lamp biomicroscopy) to grade the corneal phenotype, the consortium was able to make adjustments to equalize grading across ascertainment sites. The following grading scheme was used:
Beschreibung

Elig.phs000421.v1.p1.1

Datentyp

boolean

Alias
UMLS CUI [1,1]
C3846158
FECD Consortium Grading Scheme Grade Findings 0 No central cornea guttae 1 Scattered central cornea guttae 2 1 or 2 mm of central cornea guttae 3 >2 to 5 mm of grouped central cornea guttae 4 >5 mm of grouped central cornea guttae 5 Cornea guttae with corneal edema
Beschreibung

Elig.phs000421.v1.p1.2

Datentyp

boolean

Alias
UMLS CUI [1,1]
C3846158
There was no age restriction of cases.
Beschreibung

Elig.phs000421.v1.p1.3

Datentyp

boolean

Alias
UMLS CUI [1,1]
C3846158
Based on discussions between investigators at all three centers, the following inclusion criteria for *controls* were established:
Beschreibung

Elig.phs000421.v1.p1.4

Datentyp

boolean

Alias
UMLS CUI [1,1]
C3846158
60 years of age or older
Beschreibung

Elig.phs000421.v1.p1.5

Datentyp

boolean

Alias
UMLS CUI [1,1]
C1512693
UMLS CUI [1,2]
C0001779
Normal cornea with no epithelial, stromal, or endothelial abnormalities with the *exceptions* of:
Beschreibung

Elig.phs000421.v1.p1.6

Datentyp

boolean

Alias
UMLS CUI [1,1]
C1512693
UMLS CUI [1,2]
C0010031
UMLS CUI [1,3]
C0205307
Arcus senilis and Vogt's limbal girdle
Beschreibung

Elig.phs000421.v1.p1.7

Datentyp

boolean

Alias
UMLS CUI [1,1]
C1512693
UMLS CUI [1,2]
C0010031
UMLS CUI [1,3]
C0205307
UMLS CUI [1,4]
C0332300
UMLS CUI [1,5]
C0003742
UMLS CUI [2,1]
C1512693
UMLS CUI [2,2]
C0010031
UMLS CUI [2,3]
C0205307
UMLS CUI [2,4]
C0332300
UMLS CUI [2,5]
C0423240
Cornea scar from subepithelial zone
Beschreibung

Elig.phs000421.v1.p1.8

Datentyp

boolean

Alias
UMLS CUI [1,1]
C1512693
UMLS CUI [1,2]
C0010031
UMLS CUI [1,3]
C0205307
UMLS CUI [1,4]
C0332300
UMLS CUI [1,5]
C1828318
Previous cataract, glaucoma or retina-vitreous surgery, as long as the preoperative record indicated no evidence by slit lamp examination of guttae or FECD and postoperative exam also showed no evidence
Beschreibung

Elig.phs000421.v1.p1.9

Datentyp

boolean

Alias
UMLS CUI [1,1]
C1512693
UMLS CUI [1,2]
C0010031
UMLS CUI [1,3]
C0205307
UMLS CUI [1,4]
C0332300
UMLS CUI [1,5]
C2939459
UMLS CUI [1,6]
C0332288
UMLS CUI [1,7]
C0016781
UMLS CUI [1,8]
C0332288
UMLS CUI [1,9]
C4229871
UMLS CUI [2,1]
C1512693
UMLS CUI [2,2]
C0010031
UMLS CUI [2,3]
C0205307
UMLS CUI [2,4]
C0332300
UMLS CUI [2,5]
C0197489
UMLS CUI [2,6]
C0332288
UMLS CUI [2,7]
C0016781
UMLS CUI [2,8]
C0332288
UMLS CUI [2,9]
C4229871
UMLS CUI [3,1]
C1512693
UMLS CUI [3,2]
C0010031
UMLS CUI [3,3]
C0205307
UMLS CUI [3,4]
C0332300
UMLS CUI [3,5]
C2037746
UMLS CUI [3,6]
C2037733
UMLS CUI [3,7]
C0332288
UMLS CUI [3,8]
C0016781
UMLS CUI [3,9]
C0332288
UMLS CUI [3,10]
C4229871
Previous intraocular surgery (such as iridotomy, trabeculoplasty, or pan retinal photocoagulation with same caveats as intraocular surgery)
Beschreibung

Elig.phs000421.v1.p1.10

Datentyp

boolean

Alias
UMLS CUI [1,1]
C1512693
UMLS CUI [1,2]
C0010031
UMLS CUI [1,3]
C0205307
UMLS CUI [1,4]
C0332300
UMLS CUI [1,5]
C0543467
UMLS CUI [1,6]
C3282905

Ähnliche Modelle

Eligibility Criteria

Name
Typ
Description | Question | Decode (Coded Value)
Datentyp
Alias
Item Group
Inclusion and exclusion criteria
C1512693 (UMLS CUI [1,1])
C0680251 (UMLS CUI [2,1])
Elig.phs000421.v1.p1.1
Item
All three sites used a modified Krachmer scale for assessing disease severity in *cases*. Because each group modified Krachmer's grading scheme slightly differently, but otherwise had cornea fellowship trained observers using similar instrumentation (slit lamp biomicroscopy) to grade the corneal phenotype, the consortium was able to make adjustments to equalize grading across ascertainment sites. The following grading scheme was used:
boolean
C3846158 (UMLS CUI [1,1])
Elig.phs000421.v1.p1.2
Item
FECD Consortium Grading Scheme Grade Findings 0 No central cornea guttae 1 Scattered central cornea guttae 2 1 or 2 mm of central cornea guttae 3 >2 to 5 mm of grouped central cornea guttae 4 >5 mm of grouped central cornea guttae 5 Cornea guttae with corneal edema
boolean
C3846158 (UMLS CUI [1,1])
Elig.phs000421.v1.p1.3
Item
There was no age restriction of cases.
boolean
C3846158 (UMLS CUI [1,1])
Elig.phs000421.v1.p1.4
Item
Based on discussions between investigators at all three centers, the following inclusion criteria for *controls* were established:
boolean
C3846158 (UMLS CUI [1,1])
Elig.phs000421.v1.p1.5
Item
60 years of age or older
boolean
C1512693 (UMLS CUI [1,1])
C0001779 (UMLS CUI [1,2])
Elig.phs000421.v1.p1.6
Item
Normal cornea with no epithelial, stromal, or endothelial abnormalities with the *exceptions* of:
boolean
C1512693 (UMLS CUI [1,1])
C0010031 (UMLS CUI [1,2])
C0205307 (UMLS CUI [1,3])
Elig.phs000421.v1.p1.7
Item
Arcus senilis and Vogt's limbal girdle
boolean
C1512693 (UMLS CUI [1,1])
C0010031 (UMLS CUI [1,2])
C0205307 (UMLS CUI [1,3])
C0332300 (UMLS CUI [1,4])
C0003742 (UMLS CUI [1,5])
C1512693 (UMLS CUI [2,1])
C0010031 (UMLS CUI [2,2])
C0205307 (UMLS CUI [2,3])
C0332300 (UMLS CUI [2,4])
C0423240 (UMLS CUI [2,5])
Elig.phs000421.v1.p1.8
Item
Cornea scar from subepithelial zone
boolean
C1512693 (UMLS CUI [1,1])
C0010031 (UMLS CUI [1,2])
C0205307 (UMLS CUI [1,3])
C0332300 (UMLS CUI [1,4])
C1828318 (UMLS CUI [1,5])
Elig.phs000421.v1.p1.9
Item
Previous cataract, glaucoma or retina-vitreous surgery, as long as the preoperative record indicated no evidence by slit lamp examination of guttae or FECD and postoperative exam also showed no evidence
boolean
C1512693 (UMLS CUI [1,1])
C0010031 (UMLS CUI [1,2])
C0205307 (UMLS CUI [1,3])
C0332300 (UMLS CUI [1,4])
C2939459 (UMLS CUI [1,5])
C0332288 (UMLS CUI [1,6])
C0016781 (UMLS CUI [1,7])
C0332288 (UMLS CUI [1,8])
C4229871 (UMLS CUI [1,9])
C1512693 (UMLS CUI [2,1])
C0010031 (UMLS CUI [2,2])
C0205307 (UMLS CUI [2,3])
C0332300 (UMLS CUI [2,4])
C0197489 (UMLS CUI [2,5])
C0332288 (UMLS CUI [2,6])
C0016781 (UMLS CUI [2,7])
C0332288 (UMLS CUI [2,8])
C4229871 (UMLS CUI [2,9])
C1512693 (UMLS CUI [3,1])
C0010031 (UMLS CUI [3,2])
C0205307 (UMLS CUI [3,3])
C0332300 (UMLS CUI [3,4])
C2037746 (UMLS CUI [3,5])
C2037733 (UMLS CUI [3,6])
C0332288 (UMLS CUI [3,7])
C0016781 (UMLS CUI [3,8])
C0332288 (UMLS CUI [3,9])
C4229871 (UMLS CUI [3,10])
Elig.phs000421.v1.p1.10
Item
Previous intraocular surgery (such as iridotomy, trabeculoplasty, or pan retinal photocoagulation with same caveats as intraocular surgery)
boolean
C1512693 (UMLS CUI [1,1])
C0010031 (UMLS CUI [1,2])
C0205307 (UMLS CUI [1,3])
C0332300 (UMLS CUI [1,4])
C0543467 (UMLS CUI [1,5])
C3282905 (UMLS CUI [1,6])

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