Potential protective effect against SARS-CoV-2 infection by APOE rs7412 polymorphism

Area of Science:

• Genetics
• Infectious Diseases
• Metabolic Health

Background:

• The SARS-CoV-2 pandemic presents a global health challenge, necessitating research into factors influencing infection and severity.
• Understanding the interplay of genetic, metabolic, and lifestyle factors is crucial for managing COVID-19.
• Predisposing factors to SARS-CoV-2 infection and disease progression require further investigation.

Purpose of the Study:

• To explore the association between genetic variants related to obesity, metabolism, and lifestyle, and the occurrence and severity of SARS-CoV-2 infection.
• To identify specific genetic factors that may confer protection or susceptibility to COVID-19.

Main Methods:

• A cohort of 249 volunteers (178 women, 71 men; mean age 49 years) were assessed for dietary, lifestyle, and anthropometric data.
• Participants were genotyped for 26 genetic variants linked to obesity, lipid profiles, inflammation, and biorhythm patterns.
• COVID-19 infection status and severity were evaluated in relation to genetic data.

Main Results:

• A statistically significant protective association was observed for the APOE rs7412 genetic variant against SARS-CoV-2 infection (p=0.039, OR=0.216).
• The APOE2 allele also demonstrated a significant protective effect (p=0.001, OR=0.207).
• The genetic variant rs7412, leading to the ApoE2 protein, appears to play a protective role in SARS-CoV-2 infection.

Conclusions:

• The ApoE2 protein, determined by the APOE rs7412 variant, may offer a protective mechanism against SARS-CoV-2 infection.
• Genetic factors influencing lipid metabolism, such as those related to ApoE, are important considerations in COVID-19 research.
• Further studies are warranted to elucidate the precise mechanisms behind this genetic protection.