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Host genetic effects in pneumonia.

Hung-Hsin Chen1, Douglas M Shaw1, Lauren E Petty1

  • 1Vanderbilt Genetics Institute and Division of Genetic Medicine, Department of Medicine, Vanderbilt University Medical Center, Nashville, TN 37232, USA.

American Journal of Human Genetics
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Summary
This summary is machine-generated.

Genome-wide association studies identified key genetic factors influencing pneumonia susceptibility and severity. These findings provide insights into host genetic contributions to infectious diseases like COVID-19.

Keywords:
GWASbiobankelectronic health recordhost genetic effectpneumonia

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Area of Science:

  • Genetics
  • Infectious Diseases
  • Genomics

Background:

  • Host susceptibility and severity of infectious diseases, including pneumonia and COVID-19, are critical research areas.
  • Genome-wide association studies (GWASs) for pneumonia susceptibility and severity are limited.
  • Understanding genetic factors is crucial for managing infectious disease outcomes.

Purpose of the Study:

  • To conduct GWASs to identify genetic loci associated with pneumonia susceptibility and severity.
  • To investigate the role of host genetics in infectious disease complications.
  • To explore genetic influences on COVID-19 severity and lung function.

Main Methods:

  • Performed GWASs in the Vanderbilt University biobank (BioVU) using electronic health records (EHRs) for European (EA) and African ancestry (AA) populations.
  • Utilized Illumina Expanded Multi-Ethnic Global Array (MEGAEX) genotyping data.
  • Replicated findings in independent datasets (UK Biobank) and validated associations with COVID-19 hospitalization and lung function.

Main Results:

  • Identified significant associations at the CFTR locus in EA and the HBB locus in AA, genes responsible for cystic fibrosis and sickle cell disease, respectively.
  • Discovered an additional association in R3HCC1L after excluding individuals with cystic fibrosis, which was replicated and validated.
  • The R3HCC1L variant showed association with COVID-19 hospitalization and lung function.

Conclusions:

  • Host genetics play a significant role in susceptibility and severity of pneumonia and potentially other infectious diseases.
  • Specific genetic variants, such as those near CFTR, HBB, and R3HCC1L, are implicated in pneumonia.
  • Findings offer insights into genetic factors influencing COVID-19 severity and sequelae.