Clinical exome sequencing of 1000 families with complex immune phenotypes: Toward comprehensive genomic evaluations.
Genomics
Mendelian disorder
chromosomal microarray analysis
copy number variation
exome sequencing
genetics
immune system
immunology
inborn errors of immunity
secondary findings
Journal
The Journal of allergy and clinical immunology
ISSN: 1097-6825
Titre abrégé: J Allergy Clin Immunol
Pays: United States
ID NLM: 1275002
Informations de publication
Date de publication:
10 2022
10 2022
Historique:
received:
17
12
2021
revised:
07
05
2022
accepted:
02
06
2022
pubmed:
27
6
2022
medline:
12
10
2022
entrez:
26
6
2022
Statut:
ppublish
Résumé
Prospective genetic evaluation of patients at this referral research hospital presents clinical research challenges. This study sought not only a single-gene explanation for participants' immune-related presentations, but viewed each participant holistically, with the potential to have multiple genetic contributions to their immune phenotype and other heritable comorbidities relevant to their presentation and health. This study developed a program integrating exome sequencing, chromosomal microarray, phenotyping, results return with genetic counseling, and reanalysis in 1505 individuals from 1000 families with suspected or known inborn errors of immunity. Probands were 50.8% female, 71.5% were ≥18 years, and had diverse immune presentations. Overall, 327 of 1000 probands (32.7%) received 361 molecular diagnoses. These included 17 probands with diagnostic copy number variants, 32 probands with secondary findings, and 31 probands with multiple molecular diagnoses. Reanalysis added 22 molecular diagnoses, predominantly due to new disease-gene associations (9 of 22, 40.9%). One-quarter of the molecular diagnoses (92 of 361) did not involve immune-associated genes. Molecular diagnosis was correlated with younger age, male sex, and a higher number of organ systems involved. This program also facilitated the discovery of new gene-disease associations such as SASH3-related immunodeficiency. A review of treatment options and ClinGen actionability curations suggest that at least 251 of 361 of these molecular diagnoses (69.5%) could translate into ≥1 management option. This program contributes to our understanding of the diagnostic and clinical utility whole exome analysis on a large scale.
Sections du résumé
BACKGROUND
Prospective genetic evaluation of patients at this referral research hospital presents clinical research challenges.
OBJECTIVES
This study sought not only a single-gene explanation for participants' immune-related presentations, but viewed each participant holistically, with the potential to have multiple genetic contributions to their immune phenotype and other heritable comorbidities relevant to their presentation and health.
METHODS
This study developed a program integrating exome sequencing, chromosomal microarray, phenotyping, results return with genetic counseling, and reanalysis in 1505 individuals from 1000 families with suspected or known inborn errors of immunity.
RESULTS
Probands were 50.8% female, 71.5% were ≥18 years, and had diverse immune presentations. Overall, 327 of 1000 probands (32.7%) received 361 molecular diagnoses. These included 17 probands with diagnostic copy number variants, 32 probands with secondary findings, and 31 probands with multiple molecular diagnoses. Reanalysis added 22 molecular diagnoses, predominantly due to new disease-gene associations (9 of 22, 40.9%). One-quarter of the molecular diagnoses (92 of 361) did not involve immune-associated genes. Molecular diagnosis was correlated with younger age, male sex, and a higher number of organ systems involved. This program also facilitated the discovery of new gene-disease associations such as SASH3-related immunodeficiency. A review of treatment options and ClinGen actionability curations suggest that at least 251 of 361 of these molecular diagnoses (69.5%) could translate into ≥1 management option.
CONCLUSIONS
This program contributes to our understanding of the diagnostic and clinical utility whole exome analysis on a large scale.
Identifiants
pubmed: 35753512
pii: S0091-6749(22)00839-9
doi: 10.1016/j.jaci.2022.06.009
pmc: PMC9547837
mid: NIHMS1823027
pii:
doi:
Banques de données
ClinicalTrials.gov
['NCT03206099']
Types de publication
Journal Article
Review
Research Support, N.I.H., Intramural
Langues
eng
Sous-ensembles de citation
IM
Pagination
947-954Subventions
Organisme : Intramural NIH HHS
ID : ZIA AI001222
Pays : United States
Informations de copyright
Published by Elsevier Inc.
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