HCMV Mutation Detail Information

Virus Mutation HCMV Mutation D605E


Basic Characteristics of Mutations
Mutation Site D605E
Mutation Site Sentence The most frequent mutation was related to D605E in UL97 gene with the rate of 25%.
Mutation Level Amino acid level
Mutation Type Nonsynonymous substitution
Gene/Protein/Region UL97
Standardized Encoding Gene UL97  
Genotype/Subtype -
Viral Reference -
Functional Impact and Mechanisms
Disease Cytomegalovirus infections    
Immune -
Target Gene -
Clinical and Epidemiological Correlations
Clinical Information -
Treatment -
Location -
Literature Information
PMID 27743434
Title Molecular Analysis of Ganciclovir-Resistant Cytomegalovirus in Renal Transplant Recipients with High Viral Load
Author Sohrabi M,Behzadian F,Hosseini SM,Lashini H
Journal Archives of Iranian medicine..
Journal Info 2016 Oct;19(10):700-703
Abstract BACKGROUND: Gancyclovir-resistant (GanR) cytomegalovirus (CMV) remains an issue, especially in solid organ transplant (SOT) recipients. Some mutations in UL54 and UL97 confer this resistance. Long-lasting high-dose drug exposure, high viral load, together with lack of sufficient compliance with treatment may account for these mutations. The aim of this study was to detect UL97 and UL54 putative mutations conferring ganciclovir-resistance in renal organ transplant recipients with high CMV load. METHODS: In this cross-sectional study, 58 serum samples were collected from renal transplant recipients who had referred to three hospitals in Tehran from January 2014 to June 2015. Specific criteria such as CMV syndrome, presence of CMV in blood and organ dysfunction were considered. Then, they were tested for viral load in their early fourth month of intravenous ganciclovir treatment. Fifty cases revealing more than 200 copies/mL were analyzed for mutations. Two fragments of UL54 and Ul97 genes were amplified and sequenced bidirectionally. Sequence alignment and statistical analysis were performed by Mutation Surveyor software and t-test respectively. RESULTS: A significant difference was observed in viral load between seronegative and seropositive recipients (P = 0.036). The most frequent mutation was related to D605E in UL97 gene with the rate of 25%. Regardless of viral load, neither putative mutation nor simultaneous mutation was detected in either UL97 and UL54 regions. CONCLUSION: In spite of high viral load and persistence of symptoms, our population study did not reveal putative mutations. Hence, the direct relationship between the presence of high quantity of CMV and the occurrence of putative mutation cannot be considered. Non-putative gancyclovir resistant mutations and prolonged drug exposure may have a role in these manifestations.
Sequence Data -
Mutation Information
Note
Basic Characteristics of Mutations
  • Mutation Site: The specific location in a gene or protein sequence where a change occurs.
  • Mutation Level: The level at which a mutation occurs, including the nucleotide or amino acid level.
  • Mutation Type: The nature of the mutation, such as missense mutation, nonsense mutation, synonymous mutation, etc.
  • Gene/Protein/Region: Refers to the specific region of the virus where the mutation occurs. Including viral genes, viral proteins, or a specific viral genome region. If the article does not specifically indicate the relationship between the mutation and its correspondence, the main
  • Gene/Protein/Region studied in the article is marked.
  • Genotype/Subtype: Refers to the viral genotype or subtype where the mutation occurs. If the article does not specifically indicate the relationship between the mutation and its correspondence, the main Genotype/Subtype studied in the article is marked.
  • Viral Reference: Refers to the standard virus strain used to compare and analyze viral sequences.
Functional Impact and Mechanisms
  • Disease: An abnormal physiological state with specific symptoms and signs caused by viral infection.
  • Immune: The article focuses on the study of mutations and immune.
  • Target Gene: Host genes that viral mutations may affect.
Clinical and Epidemiological Correlations
  • Clinical Information: The study is a clinical or epidemiological study and provides basic information about the population.
  • Treatment: The study mentioned a certain treatment method, such as drug resistance caused by mutations. If the study does not specifically indicate the relationship between mutations and their correspondence treatment, the main treatment studied in the article is marked.
  • Location: The source of the research data.
Literature Information
  • Sequence Data: The study provides the data accession number.