TY - JOUR
T1 - Multi-omic approach associates blood methylome with bronchodilator drug response in pediatric asthma
AU - Perez-Garcia, Javier
AU - Herrera-Luis, Esther
AU - Li, Annie
AU - Mak, Angel C.Y.
AU - Huntsman, Scott
AU - Oh, Sam S.
AU - Elhawary, Jennifer R.
AU - Eng, Celeste
AU - Beckman, Kenneth B.
AU - Hu, Donglei
AU - Lorenzo-Diaz, Fabian
AU - Lenoir, Michael A.
AU - Rodriguez-Santana, Jose
AU - Zaitlen, Noah
AU - Villar, Jesús
AU - Borrell, Luisa N.
AU - Burchard, Esteban G.
AU - Pino-Yanes, Maria
N1 - Publisher Copyright:
© 2023 The Authors
PY - 2023/6
Y1 - 2023/6
N2 - Background: Albuterol is the drug most widely used as asthma treatment among African Americans despite having a lower bronchodilator drug response (BDR) than other populations. Although BDR is affected by gene and environmental factors, the influence of DNA methylation is unknown. Objective: This study aimed to identify epigenetic markers in whole blood associated with BDR, study their functional consequences by multi-omic integration, and assess their clinical applicability in admixed populations with a high asthma burden. Methods: We studied 414 children and young adults (8-21 years old) with asthma in a discovery and replication design. We performed an epigenome-wide association study on 221 African Americans and replicated the results on 193 Latinos. Functional consequences were assessed by integrating epigenomics with genomics, transcriptomics, and environmental exposure data. Machine learning was used to develop a panel of epigenetic markers to classify treatment response. Results: We identified 5 differentially methylated regions and 2 CpGs genome-wide significantly associated with BDR in African Americans located in FGL2 (cg08241295, P = 6.8 × 10−9) and DNASE2 (cg15341340, P = 7.8 × 10−8), which were regulated by genetic variation and/or associated with gene expression of nearby genes (false discovery rate < 0.05). The CpG cg15341340 was replicated in Latinos (P = 3.5 × 10−3). Moreover, a panel of 70 CpGs showed good classification for those with response and nonresponse to albuterol therapy in African American and Latino children (area under the receiver operating characteristic curve for training, 0.99; for validation, 0.70-0.71). The DNA methylation model showed similar discrimination as clinical predictors (P > .05). Conclusions: We report novel associations of epigenetic markers with BDR in pediatric asthma and demonstrate for the first time the applicability of pharmacoepigenetics in precision medicine of respiratory diseases.
AB - Background: Albuterol is the drug most widely used as asthma treatment among African Americans despite having a lower bronchodilator drug response (BDR) than other populations. Although BDR is affected by gene and environmental factors, the influence of DNA methylation is unknown. Objective: This study aimed to identify epigenetic markers in whole blood associated with BDR, study their functional consequences by multi-omic integration, and assess their clinical applicability in admixed populations with a high asthma burden. Methods: We studied 414 children and young adults (8-21 years old) with asthma in a discovery and replication design. We performed an epigenome-wide association study on 221 African Americans and replicated the results on 193 Latinos. Functional consequences were assessed by integrating epigenomics with genomics, transcriptomics, and environmental exposure data. Machine learning was used to develop a panel of epigenetic markers to classify treatment response. Results: We identified 5 differentially methylated regions and 2 CpGs genome-wide significantly associated with BDR in African Americans located in FGL2 (cg08241295, P = 6.8 × 10−9) and DNASE2 (cg15341340, P = 7.8 × 10−8), which were regulated by genetic variation and/or associated with gene expression of nearby genes (false discovery rate < 0.05). The CpG cg15341340 was replicated in Latinos (P = 3.5 × 10−3). Moreover, a panel of 70 CpGs showed good classification for those with response and nonresponse to albuterol therapy in African American and Latino children (area under the receiver operating characteristic curve for training, 0.99; for validation, 0.70-0.71). The DNA methylation model showed similar discrimination as clinical predictors (P > .05). Conclusions: We report novel associations of epigenetic markers with BDR in pediatric asthma and demonstrate for the first time the applicability of pharmacoepigenetics in precision medicine of respiratory diseases.
KW - African Americans
KW - Epigenomics
KW - Hispanic Americans
KW - albuterol
KW - precision medicine
UR - http://www.scopus.com/inward/record.url?scp=85150767755&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=85150767755&partnerID=8YFLogxK
U2 - 10.1016/j.jaci.2023.01.026
DO - 10.1016/j.jaci.2023.01.026
M3 - Article
C2 - 36796456
AN - SCOPUS:85150767755
SN - 0091-6749
VL - 151
SP - 1503
EP - 1512
JO - Journal of Allergy and Clinical Immunology
JF - Journal of Allergy and Clinical Immunology
IS - 6
ER -
