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Genome-wide association study of sepsis in extremely premature infants.

Publication ,  Journal Article
Srinivasan, L; Page, G; Kirpalani, H; Murray, JC; Das, A; Higgins, RD; Carlo, WA; Bell, EF; Goldberg, RN; Schibler, K; Sood, BG; Stevenson, DK ...
Published in: Arch Dis Child Fetal Neonatal Ed
September 2017

OBJECTIVE: To identify genetic variants associated with sepsis (early-onset and late-onset) using a genome-wide association (GWA) analysis in a cohort of extremely premature infants. STUDY DESIGN: Previously generated GWA data from the Neonatal Research Network's anonymised genomic database biorepository of extremely premature infants were used for this study. Sepsis was defined as culture-positive early-onset or late-onset sepsis or culture-proven meningitis. Genomic and whole-genome-amplified DNA was genotyped for 1.2 million single-nucleotide polymorphisms (SNPs); 91% of SNPs were successfully genotyped. We imputed 7.2 million additional SNPs. p Values and false discovery rates (FDRs) were calculated from multivariate logistic regression analysis adjusting for gender, gestational age and ancestry. Target statistical value was p<10-5. Secondary analyses assessed associations of SNPs with pathogen type. Pathway analyses were also run on primary and secondary end points. RESULTS: Data from 757 extremely premature infants were included: 351 infants with sepsis and 406 infants without sepsis. No SNPs reached genome-wide significance levels (5×10-8); two SNPs in proximity to FOXC2 and FOXL1 genes achieved target levels of significance. In secondary analyses, SNPs for ELMO1, IRAK2 (Gram-positive sepsis), RALA, IMMP2L (Gram-negative sepsis) and PIEZO2 (fungal sepsis) met target significance levels. Pathways associated with sepsis and Gram-negative sepsis included gap junctions, fibroblast growth factor receptors, regulators of cell division and interleukin-1-associated receptor kinase 2 (p values<0.001 and FDR<20%). CONCLUSIONS: No SNPs met genome-wide significance in this cohort of extremely low birthweight infants; however, areas of potential association and pathways meriting further study were identified.

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Published In

Arch Dis Child Fetal Neonatal Ed

DOI

EISSN

1468-2052

Publication Date

September 2017

Volume

102

Issue

5

Start / End Page

F439 / F445

Location

England

Related Subject Headings

  • Sepsis
  • Polymorphism, Single Nucleotide
  • Pediatrics
  • Microfilament Proteins
  • Male
  • Ion Channels
  • Infant, Newborn
  • Infant, Extremely Premature
  • Humans
  • Genotype
 

Citation

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Srinivasan, L., Page, G., Kirpalani, H., Murray, J. C., Das, A., Higgins, R. D., … Eunice Kennedy Shriver National Institute of Child Health and Human Development Neonatal Research Network, . (2017). Genome-wide association study of sepsis in extremely premature infants. Arch Dis Child Fetal Neonatal Ed, 102(5), F439–F445. https://doi.org/10.1136/archdischild-2016-311545
Srinivasan, Lakshmi, Grier Page, Haresh Kirpalani, Jeffrey C. Murray, Abhik Das, Rosemary D. Higgins, Waldemar A. Carlo, et al. “Genome-wide association study of sepsis in extremely premature infants.Arch Dis Child Fetal Neonatal Ed 102, no. 5 (September 2017): F439–45. https://doi.org/10.1136/archdischild-2016-311545.
Srinivasan L, Page G, Kirpalani H, Murray JC, Das A, Higgins RD, et al. Genome-wide association study of sepsis in extremely premature infants. Arch Dis Child Fetal Neonatal Ed. 2017 Sep;102(5):F439–45.
Srinivasan, Lakshmi, et al. “Genome-wide association study of sepsis in extremely premature infants.Arch Dis Child Fetal Neonatal Ed, vol. 102, no. 5, Sept. 2017, pp. F439–45. Pubmed, doi:10.1136/archdischild-2016-311545.
Srinivasan L, Page G, Kirpalani H, Murray JC, Das A, Higgins RD, Carlo WA, Bell EF, Goldberg RN, Schibler K, Sood BG, Stevenson DK, Stoll BJ, Van Meurs KP, Johnson KJ, Levy J, McDonald SA, Zaterka-Baxter KM, Kennedy KA, Sánchez PJ, Duara S, Walsh MC, Shankaran S, Wynn JL, Cotten CM, Eunice Kennedy Shriver National Institute of Child Health and Human Development Neonatal Research Network. Genome-wide association study of sepsis in extremely premature infants. Arch Dis Child Fetal Neonatal Ed. 2017 Sep;102(5):F439–F445.

Published In

Arch Dis Child Fetal Neonatal Ed

DOI

EISSN

1468-2052

Publication Date

September 2017

Volume

102

Issue

5

Start / End Page

F439 / F445

Location

England

Related Subject Headings

  • Sepsis
  • Polymorphism, Single Nucleotide
  • Pediatrics
  • Microfilament Proteins
  • Male
  • Ion Channels
  • Infant, Newborn
  • Infant, Extremely Premature
  • Humans
  • Genotype