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Glucose-6-phosphate dehydrogenase deficiency and hydroxychloroquine in the COVID-19 era: a mini review
Maria Elisabetta Onori1, Claudio Ricciardi Tenore1, Andrea Urbani2,3
1Molecular and Genomic Diagnostics Unit, Fondazione Policlinico Universitario A. Gemelli IRCCS, Rome, Italy.
Abstract:
The coronavirus disease 2019 (COVID-19) is until today a global health emergency. In an immense effort, effective drugs against COVID-19 are searched and intensive researches on possible repurposing of antiviral agents are performed. Since chloroquine (CQ) and hydroxychloroquine (HCQ) have shown in vitro anti- COVID-19 activities, the potential effect of CQ/HCQ to treat and/or prevent COVID-19 infection has caused global attention. However, concern regarding possible hemolysis in G6PD-deficient COVID-19 patients exists and for this reason, the association between HCQ and G6PD deficiency (G6PDD) is back in the limelight. This study aims to answer the question raised by Mastroianni et al. "Hydroxychloroquine: Culprit or Innocent Bystander in G6PD-Deficient Patients with COVID-19?", reporting all cases of HCQ in G6PD deficient COVID-19 patients published on PubMed (pubmed.ncbi.nlm.nih.gov), in addition to the Mastroianni's patient. In our opinion, after an accurate revision of these cases and responding the question raised by Mastroianni et al., we believe that it is difficult to reach a final verdict about the definitive role of HCQ in these patients. The COVID-19 pandemic has reopened attention on HCQ use and G6PDD. G6PD status is extremely important in modulating the level of reactive oxygen species and many cellular immune responses such as enhanced production of the pro-inflammatory cytokine and inflammasome activation. Since these processes are involved in COVID-19 infection, acute hemolytic anemia, a severe complication of the G6PDD, can occur in these patients. In this context, the role of HCQ, usually effective, safe, and well tolerated in G6PD deficient patients, must be redefined in these patients with COVID-19.As consequence, answering the question: "Hydroxychloroquine: Culprit or Innocent Bystander in G6PD-Deficient Patients with COVID-19?", we state that it is risky to believe that HCQ may be an "innocent bystander" in G6PD-deficient COVID-19 patients.
Insights
Hydroxychloroquine (HCQ) use in COVID-19 patients with G6PD deficiency (G6PDD) requires careful consideration. While HCQ is generally safe for G6PD deficient individuals, its role in COVID-19 patients is uncertain, posing potential risks.
Area of Science:
- Pharmacology
- Hematology
- Infectious Diseases
Background:
- COVID-19 remains a global health emergency, driving research into effective treatments.
- Hydroxychloroquine (HCQ) has shown in vitro activity against SARS-CoV-2, prompting clinical interest.
- Concerns exist regarding hemolysis in G6PD-deficient (G6PDD) patients treated with HCQ, particularly during the COVID-19 pandemic.
Purpose of the Study:
- To investigate the role of HCQ in G6PD-deficient COVID-19 patients.
- To address the question: "Hydroxychloroquine: Culprit or Innocent Bystander in G6PD-Deficient Patients with COVID-19?"
- To review published cases of HCQ use in G6PDD COVID-19 patients.
Main Methods:
- Systematic review of PubMed-indexed literature.
- Inclusion of Mastroianni et al.'s patient data.
- Analysis of case reports on HCQ and G6PDD in COVID-19.
Main Results:
- A review of available cases suggests a complex interaction between HCQ, G6PDD, and COVID-19.
- G6PD status influences immune responses and reactive oxygen species, relevant to COVID-19 pathogenesis.
- Acute hemolytic anemia is a known risk in G6PDD patients.
Conclusions:
- The definitive role of HCQ in G6PD-deficient COVID-19 patients remains unclear.
- HCQ may not be an "innocent bystander" in this patient population.
- Redefining HCQ's safety and efficacy profile in G6PDD patients with COVID-19 is necessary.
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